Gamma-Ray Bursts: Progress, Problems & Prospects

The cosmological gamma-ray burst (GRB) phenomenon is reviewed. The broad observational facts and empirical phenomenological relations of the GRB prompt emission and afterglow are outlined. A well-tested, successful fireball shock model is introduced in a pedagogical manner. Several important uncertainties in the current understanding of the phenomenon are reviewed, and prospects of how future experiments and extensive observational and theoretical efforts may address these problems are discussed.

[1]  Edward J. Wollack,et al.  First year Wilkinson Microwave Anisotropy Probe (WMAP) observations: Determination of cosmological parameters , 2003, astro-ph/0302209.

[2]  Chris L. Fryer,et al.  Neutrino-driven Explosions in Gamma-Ray Bursts and Hypernovae , 2003, The Astrophysical Journal.

[3]  V. Connaughton,et al.  BATSE Observations of Gamma-Ray Burst Tails , 2001, astro-ph/0111564.

[4]  Z. Gou Gamma-Ray Burst Afterglows from Anisotropic Jets , 2000, astro-ph/0010261.

[5]  Cambridge,et al.  Energetics and beaming of gamma ray burst triggers , 1998, astro-ph/9808106.

[6]  M. Rees,et al.  Steep Slopes and Preferred Breaks in Gamma-Ray Burst Spectra: The Role of Photospheres and Comptonization , 1999 .

[7]  Christopher Thompson,et al.  Formation of very strongly magnetized neutron stars - Implications for gamma-ray bursts , 1992 .

[8]  P. Mészáros,et al.  submitted to THE ASTROPHYSICAL JOURNAL LETTERS, 05/04/99 ANALYSIS OF TEMPORAL FEATURES OF GAMMA-RAY BURSTS IN THE INTERNAL SHOCK MODEL , 2000 .

[9]  David Eichler,et al.  Polarization of Gamma-Ray Bursts via Scattering off a Relativistic Sheath , 2003 .

[10]  Takashi S. Nakamura,et al.  Off-Axis Emission from the Beamed Afterglow of Gamma-Ray Bursts and a Possible Interpretation of the Slowly Declining X-Ray Afterglow of GRB 980425 , 1999, astro-ph/9907218.

[11]  J. Goodman,et al.  Are gamma-ray bursts optically thick? , 1986 .

[12]  Abraham Loeb,et al.  Identifying the Environment and Redshift of Gamma-Ray Burst Afterglows from the Time Dependence of Their Absorption Spectra , 1998 .

[13]  K. Asano,et al.  Dispersion of the Break Energy in the GRB Internal Shock Model , 2003, astro-ph/0304211.

[14]  H. C. Spruit,et al.  Efficient acceleration and radiation in Poynting flux powered GRB outflows , 2002, astro-ph/0202387.

[15]  A. Merloni,et al.  Quiescent times in gamma-ray bursts — I. An observed correlation between the durations of subsequent emission episodes , 2000, astro-ph/0010218.

[16]  J. Poutanen,et al.  Gamma‐Ray Bursts: The First Three Minutes , 1999 .

[17]  C. Guidorzi,et al.  Discovery of GRB 020405 and Its Late Red Bump , 2002, astro-ph/0208008.

[18]  The Supernova Associated with GRB 030329 , 2003, astro-ph/0304106.

[19]  E. Rol,et al.  Variable polarization in the optical afterglow of GRB 021004 , 2003, astro-ph/0305227.

[20]  Martin J. Rees,et al.  Refreshed Shocks and Afterglow Longevity in Gamma-Ray Bursts , 1998 .

[21]  R. Blandford,et al.  Fluid dynamics of relativistic blast waves , 1976 .

[22]  Sergio Campana,et al.  Iron line in the afterglow: a key to unveil gamma-ray burst progenitors , 1999 .

[23]  H. Bethe,et al.  A theory of gamma-ray bursts , 2000, astro-ph/0003361.

[24]  M. Rees,et al.  Relativistic Fireballs and Their Impact on External Matter: Models for Cosmological Gamma-Ray Bursts , 1993 .

[25]  M. Lyutikov GRBs from unstable Poynting dominated outflows , 2002 .

[26]  Z. Lu Neutrino afterglows and progenitors of gamma-ray bursts , 2000, astro-ph/0002430.

[27]  Sternberg Astronomical Institute,et al.  GRB as explosions with standard power , 1999, astro-ph/9908136.

[28]  P. Mészáros,et al.  Simulations of Gamma-Ray Bursts from External Shocks: Time Variability and Spectral Correlations , 1997, astro-ph/9703187.

[29]  Heather Ting Ma,et al.  Rebrightening of XRF 030723: Further evidence for a two-component jet in a gamma-ray burst , 2003, astro-ph/0309360.

[30]  R. L. Aptekar,et al.  Correlation between luminosity and temperature in γ-ray burst sources , 1983, Nature.

[31]  M. Feroci,et al.  Discovery of the X-Ray Afterglow of the Gamma-Ray Burst of February 28 1997 , 1997 .

[32]  M. Feroci,et al.  Discovery of a Radio Flare from GRB 990123 , 1999, astro-ph/9903441.

[33]  Cambridge,et al.  Cooling Timescales and Temporal Structure of Gamma-Ray Bursts , 1996, astro-ph/9605005.

[34]  S. Woosley,et al.  Gamma-Ray Bursts and Type Ic Supernova SN 1998bw , 1998, astro-ph/9806299.

[35]  F. Daigne,et al.  Large scale magnetic fields and their dissipation in GRB fireballs , 2000 .

[36]  Z. Dai,et al.  GRB 030226 in a Density-Jump Medium , 2003, astro-ph/0305426.

[37]  V. Lipunov,et al.  Gamma-ray bursts as standard-energy explosions , 2001 .

[38]  Takashi S. Nakamura A Model for Non High Energy Gamma Ray Bursts , 1998, astro-ph/9807087.

[39]  E. Waxman,et al.  On the Neutrino Flux from Gamma-Ray Bursts , 2001, astro-ph/0104045.

[40]  Jay D. Salmonson Perspective on Afterglows: Numerically Computed Views, Light Curves, and the Analysis of Homogeneous and Structured Jets with Lateral Expansion , 2003 .

[41]  M. Lemoine,et al.  Particle Transport in Tangled Magnetic Fields and Fermi Acceleration at Relativistic Shocks , 2003 .

[42]  R. Svensson,et al.  Power Density Spectra of Gamma-Ray Bursts , 1999, astro-ph/9911122.

[43]  M. Boettcher,et al.  Line Emission from Gamma-Ray Burst Environments , 1999, astro-ph/9912030.

[44]  A. Mészáros,et al.  A Remarkable Angular Distribution of the Intermediate Subclass of Gamma-Ray Bursts , 2000, astro-ph/0003284.

[45]  Austin,et al.  GRB 021004: a Massive Progenitor Star Surrounded by Shells , 2002 .

[46]  M. Ruffert,et al.  GAMMA-RAY BURSTS FROM ACCRETING BLACK HOLES IN NEUTRON STAR MERGERS , 1998, astro-ph/9809280.

[47]  Arnon Dar,et al.  Gamma Ray Bursts from Minijets , 1994 .

[48]  Enrico Fermi,et al.  On the Origin of the Cosmic Radiation , 1949 .

[49]  Nicole M. Lloyd-Ronning,et al.  Synchrotron Radiation as the Source of Gamma-Ray Burst Spectra , 2000 .

[50]  Xinyu Dai,et al.  On the Structure of Quasi-universal Jets for Gamma-Ray Bursts , 2003, astro-ph/0310431.

[51]  Jonathan Granot,et al.  Images and spectra from the interior of a relativistic fireball , 1999 .

[52]  M. Livio,et al.  Toward a Model for the Progenitors of Gamma-Ray Bursts , 1999, astro-ph/9911160.

[53]  Y. F. Huang,et al.  Gamma-ray bursts: afterglows from cylindrical jets , 2001, astro-ph/0102463.

[54]  Chris L. Fryer,et al.  To be submitted to The Astrophysical Journal Formation Rates of Black Hole Accretion Disk Gamma-Ray Bursts , 1999 .

[55]  E. Fenimore,et al.  Evidence for cyclotron absorption from spectral features in gamma-ray bursts seen with Ginga , 1988, Nature.

[56]  J. Bloom,et al.  The Spatial Distribution of Coalescing Neutron Star Binaries , 1998, astro-ph/9805222.

[57]  William H. Lee,et al.  Accretion Disks around Black Holes: Dynamical Evolution, Meridional Circulations, and Gamma-Ray Bursts , 2002, astro-ph/0206011.

[58]  Bing Zhang,et al.  Gamma-Ray Burst Early Optical Afterglows: Implications for the Initial Lorentz Factor and the Central Engine , 2003 .

[59]  G. Fazio,et al.  High-energy Gamma-ray Astronomy , 1963, Nature.

[60]  Arnon Dar,et al.  On the optical and X-ray afterglows of gamma ray bursts , 2002 .

[61]  B. Schaefer Explaining the Gamma-Ray Burst Epeak Distribution , 2002, astro-ph/0212453.

[62]  Pawan Kumar Gamma-Ray Burst Energetics , 1999 .

[63]  A. W. Blain,et al.  The visibility of gamma-ray burst afterglows in dusty star-forming regions , 2001 .

[64]  C. Dermer,et al.  High-energy Gamma Rays from Ultra-high-energy Cosmic-Ray Protons in Gamma-Ray Bursts , 1998, astro-ph/9801027.

[65]  J. Bahcall,et al.  HIGH ENERGY NEUTRINOS FROM COSMOLOGICAL GAMMA-RAY BURST FIREBALLS , 1997, astro-ph/9701231.

[66]  M. Rees,et al.  Multiwavelength Afterglows in Gamma-Ray Bursts: Refreshed Shock and Jet Effects , 1998, astro-ph/9801258.

[67]  C. Bianco,et al.  On a Possible Gamma-Ray Burst-Supernova Time Sequence , 2001, astro-ph/0106534.

[68]  D. Frail,et al.  A 450 Day Light Curve of the Radio Afterglow of GRB 970508: Fireball Calorimetry , 1999, astro-ph/9910319.

[69]  D. Palmer,et al.  BATSE observations of gamma-ray burst spectra. I: Spectral diversity , 1993 .

[70]  H. Lee,et al.  The Blandford-Znajek process as a central engine for a gamma-ray burst , 1999, astro-ph/9906213.

[71]  Melvyn B. Davies,et al.  High-resolution calculations of merging neutron stars - III. Gamma-ray bursts , 2003, astro-ph/0306418.

[73]  Gregory Y. Prigozhin,et al.  High Energy Transient Explorer 2 Observations of the Extremely Soft X-Ray Flash XRF 020903 , 2004 .

[74]  Gerald J. Fishman,et al.  Attributes of Pulses in Long Bright Gamma-Ray Bursts , 1996 .

[75]  A. Harding,et al.  The physics of gamma-ray bursts , 1991 .

[76]  A. Loeb,et al.  ApJ in press Preprint typeset using L ATEX style emulateapj v. 04/03/99 THE EXPECTED REDSHIFT DISTRIBUTION OF GAMMA-RAY BURSTS , 2002 .

[77]  A. Loeb,et al.  The 21 Centimeter Forest: Radio Absorption Spectra as Probes of Minihalos before Reionization , 2002, astro-ph/0206308.

[78]  Roger D. Blandford,et al.  Particle acceleration at astrophysical shocks: A theory of cosmic ray origin , 1987 .

[79]  Yu. A. Gur'yan,et al.  Cyclotron and annihilation lines in γ-ray bursts , 1981, Nature.

[80]  M. Porzio On the acceleration of Ultra High Energy Cosmic Rays in Gamma Ray Bursts , 2022 .

[81]  James E. Rhoads,et al.  Dirty Fireballs and Orphan Afterglows: A Tale of Two Transients , 2003, astro-ph/0301011.

[82]  E. Blackman,et al.  An Explanation for the Bimodal Duration Distribution of Gamma-Ray Bursts: Millisecond Pulsars from Accretion-induced Collapse , 1997, astro-ph/9710149.

[83]  Gravitational Wave Emission from Core Collapse of Massive Stars , 2001, astro-ph/0106113.

[84]  C. Kouveliotou,et al.  DETECTION OF SIGNATURE CONSISTENT WITH COSMOLOGICAL TIME DILATION IN GAMMA-RAY BURSTS , 1993, astro-ph/9312049.

[85]  Neutrino tomography of gamma-ray bursts and massive stellar collapses , 2003, astro-ph/0303505.

[86]  J. Chiang,et al.  Fireball Loading and the Blast-Wave Model of Gamma-Ray Bursts , 1998, astro-ph/9804174.

[87]  Tomasz Bulik,et al.  Merger Sites of Double Neutron Stars and Their Host Galaxies , 2002, astro-ph/0204416.

[88]  Gerald J. Fishman,et al.  Extended Power-Law Decays in BATSE Gamma-Ray Bursts: Signatures of External Shocks? , 2002 .

[89]  Constraints on models for TeV gamma rays from gamma-ray bursts , 2002, astro-ph/0206383.

[90]  M. McConnell,et al.  Characteristics of gamma-ray bursts at MeV energies measured by COMPTEL , 1998 .

[91]  B. Dingus,et al.  A γ-ray burst with a high-energy spectral component inconsistent with the synchrotron shock model , 2003, Nature.

[92]  R. Preece,et al.  The nu F nu Peak Energy Distributions of Gamma-Ray Bursts Observed by BATSE , 1995 .

[93]  Z. Dai,et al.  Early GeV afterglows from gamma-ray bursts in pulsar wind bubbles , 2002, astro-ph/0206499.

[94]  C. Bianco,et al.  Relative Spacetime Transformations in Gamma-Ray Bursts , 2001, astro-ph/0106531.

[95]  L Piro,et al.  Discovery of a transient absorption edge in the X-ray spectrum of GRB 990705. , 2000, Science.

[96]  Zhi-Yun Li,et al.  Wind Interaction Models for Gamma-Ray Burst Afterglows: The Case for Two Types of Progenitors , 1999, astro-ph/9908272.

[97]  S. R. Kulkarni,et al.  The Enigmatic Radio Afterglow of GRB 991216 , 2000 .

[98]  P. Mészáros,et al.  Electron Acceleration and Efficiency in Nonthermal Gamma-Ray Sources , 1996, astro-ph/9602016.

[99]  Chris L. Fryer,et al.  HYPER-ACCRETING BLACK HOLES AND GAMMA - , 1998 .

[100]  Jay P. Norris Implications of the Lag-Luminosity Relationship for Unified Gamma-Ray Burst Paradigms , 2002 .

[101]  Chiko Otani,et al.  A Possible Emission Feature in an X-Ray Afterglow of GRB 970828 as a Radiative Recombination Edge , 2001 .

[102]  A. MacFadyen,et al.  Collapsars: Gamma-Ray Bursts and Explosions in “Failed Supernovae” , 1998, astro-ph/9810274.

[103]  A Calorimetric Test for Kerr Black Holes in Gamma-Ray Bursts , 2001, astro-ph/0110422.

[104]  Z. Dai,et al.  A GENERIC DYNAMICAL MODEL OF GAMMA-RAY BURST REMNANTS , 1999, astro-ph/9906370.

[105]  Shiho Kobayashi,et al.  A CHARACTERISTIC DENSE ENVIRONMENT OR WIND SIGNATURE IN PROMPT GAMMA-RAY BURST AFTERGLOWS , 2003, astro-ph/0308409.

[106]  Davide Lazzati,et al.  Constraints on the emission mechanisms of gamma‐ray bursts , 1999, astro-ph/9912461.

[107]  M. Medvedev Theory of “Jitter” Radiation from Small-Scale Random Magnetic Fields and Prompt Emission from Gamma-Ray Burst Shocks , 2000, astro-ph/0001314.

[108]  E. Waxman,et al.  TeV neutrinos from successful and choked gamma-ray bursts. , 2001, Physical review letters.

[109]  Cheng,et al.  Conversion of Neutron Stars to Strange Stars as a Possible Origin of gamma -Ray Bursts. , 1995, Physical review letters.

[110]  T. Piran,et al.  GRB 990123: The Optical Flash and the Fireball Model , 1999, astro-ph/9902009.

[111]  L. A. Antonelli,et al.  Discovery of an X-ray afterglow associated with the γ-ray burst of 28 February 1997 , 1997, Nature.

[112]  Mario Vietri,et al.  Illuminated, and Enlightened, by GRB 991216 , 2000, astro-ph/0011580.

[113]  Coalescing neutron stars { a step towards physical models II. Neutrino emission, neutron tori, and gamma-ray bursts , 1996, astro-ph/9606181.

[114]  Bing Zhang,et al.  GAMMA-RAY BURST AFTERGLOW WITH CONTINUOUS ENERGY INJECTION: SIGNATURE OF A HIGHLY MAGNETIZED MILLISECOND PULSAR , 2000 .

[115]  E. Liang,et al.  Dependence of the spectral evolution of γ-ray bursts on their photon fluence , 1996, Nature.

[116]  Guohong Xu,et al.  Neutrino bursts from gamma-ray bursts , 1994 .

[117]  L. Finn LIGO’s “science reach” , 2001, gr-qc/0104042.

[118]  V. Kocharovsky,et al.  The Neutron Component in Fireballs of Gamma-Ray Bursts: Dynamics and Observable Imprints , 1999 .

[119]  Li-xin Li,et al.  Making Clean Energy with a Kerr Black Hole: A Tokamak Model for Gamma-Ray Bursts , 2000, astro-ph/0005494.

[120]  P. Soffitta,et al.  Optical and Radio Observations of the Afterglow from GRB 990510: Evidence for a Jet , 1999 .

[121]  Flanagan,et al.  The last three minutes: Issues in gravitational-wave measurements of coalescing compact binaries. , 1992, Physical review letters.

[122]  Zhi-Yun Li,et al.  Wind-Interaction Models for the Early Afterglows of Gamma-Ray Bursts: The Case of GRB 021004 , 2003, astro-ph/0303650.

[123]  Xinyu Dai,et al.  Quasi-universal Gaussian Jets: A Unified Picture for Gamma-Ray Bursts and X-Ray Flashes , 2004 .

[124]  A. Kumar,et al.  Analytic Light Curves of Gamma-Ray Burst Afterglows: Homogeneous versus Wind External Media , 2000, astro-ph/0003246.

[125]  D. Frail,et al.  Radio emission from the unusual supernova 1998bw and its association with the γ-ray burst of 25 April 1998 , 1998, Nature.

[126]  G. Gisler,et al.  Observation of contemporaneous optical radiation from a γ-ray burst , 1999, Nature.

[127]  S. Covino,et al.  The afterglow of GRB 021004: surfing on density waves , 2002, astro-ph/0210333.

[128]  J. Centrella Astrophysical sources for ground-based gravitational wave detectors, Philadelphia, Pennsylvania 30 October-1 November 2000 , 2001 .

[129]  P. Mészáros,et al.  Spectral properties of blast-wave models of gamma-ray burst sources , 1993, astro-ph/9311071.

[130]  E. Pier,et al.  Relativistic motion in gamma-ray bursts , 1991 .

[131]  D. Thompson,et al.  Detection of a γ-ray burst of very long duration and very high energy , 1994, Nature.

[132]  Bing Zhang,et al.  GAMMA-RAY BURST BEAMING: A UNIVERSAL CONFIGURATION WITH A STANDARD ENERGY RESERVOIR? , 2002 .

[133]  Gravitational Wave Frequencies and Energies in Hypernovae , 2002, astro-ph/0209518.

[134]  Jonathan Granot The Most Probable Cause for the High Gamma-Ray Polarization in GRB 021206 , 2003 .

[135]  I. Horvath A Third Class of Gamma-Ray Bursts? , 1998, astro-ph/9803077.

[136]  S. E. Woosley,et al.  How Massive Single Stars End Their Life , 2003 .

[137]  K. Pedersen,et al.  The Afterglow of GRB 010222: A Case of Continuous Energy Injection* , 2002 .

[138]  et al,et al.  GRB010222: afterglow emission from a rapidly decelerating shock ⋆ , 2001 .

[139]  C. Kouveliotou,et al.  Identification of two classes of gamma-ray bursts , 1993 .

[140]  R. Plaga,et al.  Detecting intergalactic magnetic fields using time delays in pulses of γ-rays , 1995, Nature.

[141]  M. Rees,et al.  Delayed GeV emission from cosmological gamma-ray bursts: impact of a relativistic wind on external matter , 1994, astro-ph/9404056.

[142]  A. Loeb,et al.  Emission Spectra from Internal Shocks in Gamma-Ray Burst Sources , 1997, astro-ph/9710219.

[143]  Z. Dai,et al.  Optical flashes and very early afterglows in wind environments , 2003, astro-ph/0304110.

[144]  Eli Waxman Angular Size and Emission Timescales of Relativistic Fireballs , 1997 .

[145]  R. Svensson,et al.  Self-Similar Temporal Behavior of Gamma-Ray Bursts , 1998, astro-ph/9807139.

[146]  A. Raftery,et al.  Three Types of Gamma-Ray Bursts , 1998, astro-ph/9802085.

[147]  D. Fugazza,et al.  The optical afterglow of GRB 000911: Evidence for an associated supernova? , 2001, astro-ph/0109287.

[148]  M. Ruderman THEORIES OF γ‐RAY BURSTS fn1 , 1975 .

[149]  G. Barbiellini,et al.  A fireworks model for gamma-ray bursts , 2003 .

[150]  Tsvi Piran,et al.  Hydrodynamics of a Relativistic Fireball: The Complete Evolution , 1999 .

[151]  Z. G. Dai,et al.  The afterglow of GRB 990123 and a dense medium , 1999 .

[152]  K. Cheng,et al.  Delayed MeV-GeV Gamma-Ray Photons in Gamma-Ray Bursts: An Effect of Electromagnetic Cascades of Very High Energy Gamma Rays in the Infrared/Microwave Background , 1996 .

[153]  E. Ramirez-Ruiz,et al.  Was GRB 990123 a unique optical flash , 2001, astro-ph/0110519.

[154]  M. Putten Gamma-ray bursts: LIGO/VIRGO sources of gravitational radiation , 2001 .

[155]  A further study of the BATSE Gamma-Ray Burst duration distribution , 2002, astro-ph/0205004.

[156]  Re'em Sari,et al.  Hydrodynamics of Gamma-Ray Burst Afterglow , 1997 .

[158]  Saclay,et al.  The expected thermal precursors of gamma-ray bursts in the internal shock model , 2002, astro-ph/0207456.

[159]  S. R. Kulkarni,et al.  BEAMING IN GAMMA-RAY BURSTS: EVIDENCE FOR A STANDARD ENERGY RESERVOIR , 2001 .

[160]  J. G. Jernigan,et al.  Spectral analysis of 35 GRBs/XRFs observed with HETE-2/FREGATE , 2002 .

[161]  E. Phinney The Rate of Neutron Star Binary Mergers in the Universe: Minimal Predictions for Gravity Wave Detectors , 1991 .

[162]  Sari,et al.  Impulsive and Varying Injection in Gamma-Ray Burst Afterglows. , 2000, The Astrophysical journal.

[163]  Elena M. Rossi,et al.  Afterglow Lightcurves, Viewing Angle and the Jet Structure of Gamma‐Ray Bursts , 2003 .

[164]  D. Watson,et al.  Temporal properties of gamma-ray bursts as signatures of jets from the central engine , 2002 .

[165]  J. N. Reeves,et al.  Delayed Soft X-Ray Emission Lines in the Afterglow of GRB 030227 , 2003 .

[166]  Bronislaw Rudak,et al.  Study of Gamma-Ray Burst Binary Progenitors , 2001, astro-ph/0112122.

[167]  Orphan Gamma-Ray Burst Radio Afterglows: Candidates and Constraints on Beaming , 2002, astro-ph/0203262.

[168]  B. Paczyński Super-Eddington winds from neutron stars , 1990 .

[169]  Chris L. Fryer,et al.  Hyperaccreting Black Holes and Gamma-Ray Bursts , 1998, astro-ph/9807028.

[170]  T. Piran,et al.  Implications of the -ray polarization of GRB 021206 , 2003, astro-ph/0307290.

[171]  S. Djorgovski,et al.  The unusual afterglow of GRB 980326: evidence for the gamma-ray burst/supernova connection , 1999, astro-ph/9905301.

[172]  A. Panaitescu,et al.  Properties of Relativistic Jets in Gamma-Ray Burst Afterglows , 2001, astro-ph/0109124.

[173]  D. Reichart GRB 970228 Revisited: Evidence for a Supernova in the Light Curve and Late Spectral Energy Distribution of the Afterglow , 1999, astro-ph/9906079.

[174]  Expected Number and Flux Distribution of Gamma-Ray Burst Afterglows with High Redshifts , 2000, astro-ph/0002412.

[175]  M. Baring,et al.  The Escape of high-energy photons from gamma-ray bursts , 1997, astro-ph/9711217.

[176]  A. A. Mahabal,et al.  The cosmic gamma-ray bursts and their host galaxies in a cosmological context , 2002, SPIE Astronomical Telescopes + Instrumentation.

[177]  Giancarlo Ghirlanda,et al.  Extremely hard GRB spectra prune down the forest of emission models , 2002 .

[178]  M. Rees,et al.  Unsteady outflow models for cosmological gamma-ray bursts , 1994, astro-ph/9404038.

[179]  Z. Dai,et al.  Failed gamma-ray bursts and orphan afterglows , 2001, astro-ph/0112469.

[180]  Z. Dai,et al.  Cylindrical Jet -- Wind Interaction Model of Gamma-Ray Burst Afterglows , 2003 .

[181]  Enrico Ramirez-Ruiz,et al.  Cosmological Aspects of Gamma-Ray Bursts: Luminosity Evolution and an Estimate of the Star Formation Rate at High Redshifts , 2001, astro-ph/0108200.

[182]  F. Daigne,et al.  GAMMA-RAY BURSTS FROM INTERNAL SHOCKS IN A RELATIVISTIC WIND : TEMPORAL AND SPECTRAL PROPERTIES , 1998, astro-ph/9801245.

[183]  M. Rees,et al.  Poynting Jets from Black Holes and Cosmological Gamma-Ray Bursts , 1996, astro-ph/9609065.

[184]  Relativistic Magnetohydrodynamics with Application to Gamma-Ray Burst Outflows. I. Theory and Semianalytic Trans-Alfvénic Solutions , 2003, astro-ph/0303482.

[185]  Re'em Sari,et al.  The Shape of Spectral Breaks in Gamma-Ray Burst Afterglows , 2001 .

[186]  L. Piro,et al.  Broadband Observations of the Afterglow of GRB 000926: Observing the Effect of Inverse Compton Scattering and Evidence for a High-Density Environment , 2001 .

[187]  Geoffrey N. Pendleton,et al.  Spectral evolution of a subclass of gamma-ray bursts observed by batse , 1994 .

[188]  E. Waxman,et al.  Collapsar Uncorking and Jet Eruption in Gamma-Ray Bursts , 2002, astro-ph/0206392.

[189]  Bing Zhang,et al.  Gamma-Ray Bursts with Continuous Energy Injection and Their Afterglow Signature , 2001, astro-ph/0108402.

[190]  Abraham Loeb,et al.  Generation of Magnetic Fields in the Relativistic Shock of Gamma-Ray Burst Sources , 1999, astro-ph/9904363.

[191]  C. I. O. Technology.,et al.  Polarization of Prompt Gamma-Ray Burst Emission: Evidence for Electromagnetically Dominated Outflow , 2003, astro-ph/0305410.

[192]  Z. Dai,et al.  Long term neutrino afterglows from gamma-ray bursts , 2002, astro-ph/0208435.

[193]  J. Chiang,et al.  Beaming, Baryon-Loading, and the Synchrotron Self-Compton Component in Gamma-Ray Burst Blast Waves Energized by External Shocks , 1999, astro-ph/9910240.

[194]  et al,et al.  Discovery of the optical counterpart and early optical observations of GRB 990712 , 2000 .

[195]  R. Ouyed,et al.  Quark-Nova as Gamma Ray Burst Precursor , 2001, astro-ph/0105109.

[196]  T. Piran,et al.  Can Internal Shocks Produce the Variability in Gamma-Ray Bursts? , 1997, astro-ph/9705013.

[197]  C. Matzner Supernova hosts for gamma-ray burst jets: dynamical constraints , 2002, astro-ph/0203085.

[198]  Re'em Sari,et al.  Lower Limits on Lorentz Factors in Gamma-Ray Bursts , 2000, astro-ph/0011508.

[199]  T. Piran,et al.  The Energy of Long-Duration Gamma-Ray Bursts , 2001 .

[200]  R. Blandford,et al.  Electromagnetic extraction of energy from Kerr black holes , 1977 .

[201]  M. Vietri The Soft X-Ray Afterglow of Gamma-Ray Bursts: A Stringent Test for the Fireball Model , 1997, astro-ph/9701024.

[202]  D. Fugazza,et al.  Intrinsic and dust-induced polarization in gamma-ray burst afterglows: The case of GRB 021004 , 2003, astro-ph/0308540.

[203]  Tsvi Piran,et al.  Jets in Gamma-Ray Bursts , 1999 .

[204]  Gamma-ray bursts from unstable Poynting-dominated outflows , 2000, astro-ph/0004212.

[205]  S. Djorgovski,et al.  The unusual afterglow of the γ-ray burst of 26 March 1998 as evidence for a supernova connection , 1999, Nature.

[206]  C. Kouveliotou,et al.  Transient optical emission from the error box of the γ-ray burst of 28 February 1997 , 1997, Nature.

[207]  B. Draine,et al.  Dust Sublimation by Gamma-ray Bursts and Its Implications , 1999, astro-ph/9909020.

[208]  W. Kluźniak,et al.  A Central Engine for Cosmic Gamma-Ray Burst Sources , 2000, astro-ph/0003462.

[209]  Z. Dai,et al.  Overall Evolution of Jetted Gamma-Ray Burst Ejecta , 1999, astro-ph/9910493.

[210]  V. Usov,et al.  Millisecond pulsars with extremely strong magnetic fields as a cosmological source of γ-ray bursts , 1992 .

[211]  A. Panaitescu,et al.  Fundamental Physical Parameters of Collimated Gamma-Ray Burst Afterglows , 2001 .

[212]  G. Drenkhahn Acceleration of GRB outflows by Poynting flux dissipation , 2001, astro-ph/0112509.

[213]  Jonathan Granot,et al.  THE EVOLUTION OF A STRUCTURED RELATIVISTIC JET AND GAMMA-RAY BURST AFTERGLOW LIGHT CURVES , 2003 .

[214]  Chicago,et al.  A Possible Cepheid-like Luminosity Estimator for the Long Gamma-Ray Bursts , 2000, astro-ph/0004302.

[215]  W. S. Paciesas,et al.  The Synchrotron Shock Model Confronts a "Line of Death" in the BATSE Gamma-Ray Burst Data , 1998 .

[216]  James E. Rhoads,et al.  X-Ray Destruction of Dust along the Line of Sight to γ-Ray Bursts , 2001, astro-ph/0106343.

[217]  M. H. Wieringa,et al.  A Complete Catalog of Radio Afterglows: The First Five Years , 2003 .

[218]  A. Panaitescu,et al.  The Effect of Angular Structure of Gamma-Ray Burst Outflows on the Afterglow Emission , 2003, astro-ph/0301032.

[219]  Felix Ryde,et al.  Luminosity and Variability of Collimated Gamma-Ray Bursts , 2001, astro-ph/0110080.

[220]  P. Padovani,et al.  UNIFIED SCHEMES FOR RADIO-LOUD ACTIVE GALACTIC NUCLEI , 1995, astro-ph/9506063.

[221]  Enrico Ramirez-Ruiz,et al.  Beam models for gamma-ray bursts sources: outflow structure, kinematics and emission mechanisms , 2002 .

[222]  I. Bombaci,et al.  Conversion of Neutron Stars to Strange Stars as the Central Engine of Gamma-Ray Bursts , 2000, The Astrophysical journal.

[223]  S. B. Pandey,et al.  The extraordinarily bright optical afterglow of GRB 991208 and its host galaxy , 2001, astro-ph/0102177.

[224]  T. Bulik,et al.  On Beaming Effects in Afterglow Light Curves , 1999, astro-ph/9904310.

[225]  Neutrino Afterglow from Gamma-Ray Bursts: ~1018 eV , 1999, hep-ph/9909286.

[226]  Ryo Yamazaki,et al.  X-Ray Flashes from Off-Axis Gamma-Ray Bursts , 2002 .

[227]  P. Kumar,et al.  Off-Axis Afterglow Emission from Jetted Gamma-Ray Bursts , 2002 .

[228]  T. Totani,et al.  Orphan Afterglows of Collimated Gamma-Ray Bursts: Rate Predictions and Prospects for Detection , 2002, astro-ph/0204258.

[229]  M. Tavani X-Ray Afterglows from Gamma-Ray Bursts , 1997, astro-ph/9703150.

[230]  Zhi-Yun Li,et al.  Gamma-Ray Burst Environments and Progenitors , 1999, astro-ph/9904417.

[231]  J. I. Katz LOW-FREQUENCY SPECTRA OF GAMMA-RAY BURSTS , 1993 .

[232]  E. Rol,et al.  Evidence for a Supernova in Reanalyzed Optical and Near-Infrared Images of GRB 970228 , 1999, astro-ph/9907264.

[233]  M. Tavani,et al.  Shock emission model for gamma-ray bursts. , 1996, Physical review letters.

[234]  J. I. Katz Delayed hard photons from gamma-ray bursts , 1994 .

[235]  P. Mészáros,et al.  Radiative Regimes in Gamma-Ray Bursts and Afterglows , 1997, astro-ph/9711339.

[236]  Robert S. Mallozzi,et al.  Cosmological versus Intrinsic: The Correlation between Intensity and the Peak of the νFν Spectrum of Gamma-Ray Bursts , 1999, astro-ph/9908191.

[237]  S. R. Kulkarni,et al.  The Observed Offset Distribution of Gamma-Ray Bursts from Their Host Galaxies: A Robust Clue to the Nature of the Progenitors , 2000, astro-ph/0010176.

[238]  L. Piro,et al.  Detection of a Supernova Signature Associated with GRB 011121 , 2002 .

[239]  Gruzinov,et al.  Strongly Polarized Optical Afterglows of Gamma-Ray Bursts , 1999, The Astrophysical journal.

[240]  R. Narayan,et al.  X-Ray Lines from Gamma-Ray Bursts , 2002, astro-ph/0205488.

[241]  Volker Bromm,et al.  The Formation of the First Stars. I. The Primordial Star-forming Cloud , 2002 .

[242]  W. Israel in 300 Years of Gravitation , 1988 .

[243]  E. Waxman,et al.  Efficiency and Spectrum of Internal Gamma-Ray Burst Shocks , 2000, astro-ph/0011170.

[244]  T. Piran,et al.  Gamma-ray bursts as the death throes of massive binary stars , 1992, astro-ph/9204001.

[245]  S. R. Kulkarni,et al.  Gamma-Ray Burst Energetics and the Gamma-Ray Burst Hubble Diagram: Promises and Limitations , 2003 .

[246]  J. Chiang,et al.  Synchrotron and Synchrotron Self-Compton Emission and the Blast-Wave Model of Gamma-Ray Bursts , 1998, astro-ph/9803339.

[247]  Tsvi Piran,et al.  Hydrodynamics of relativistic fireballs , 1993, astro-ph/9301004.

[248]  Caltech,et al.  Relativistic Jets in Collapsars , 2002, astro-ph/0207436.

[249]  J. Rhoads How to Tell a Jet from a Balloon: A Proposed Test for Beaming in Gamma-Ray Bursts , 1997, astro-ph/9705163.

[250]  T. Piran,et al.  The Detectability of Orphan Afterglows , 2002, astro-ph/0204203.

[251]  L. Piro,et al.  The Faint Optical Afterglow and Host Galaxy of GRB 020124: Implications for the Nature of Dark Gamma-Ray Bursts , 2002, astro-ph/0207320.

[252]  M. Feroci,et al.  The X-Ray Afterglow of the Gamma-Ray Burst of 1997 May 8:Spectral Variability and Possible Evidence of an Iron Line , 1999, astro-ph/9902013.

[253]  T. Piran,et al.  The appearance of cosmic fireballs , 1990 .

[254]  Eli Waxman,et al.  Gamma-Ray-Burst Afterglow: Supporting the Cosmological Fireball Model, Constraining Parameters, and Making Predictions , 1997, astro-ph/9704116.

[255]  R. Preece,et al.  Evolution of the Low-Energy Photon Spectra in Gamma-Ray Bursts , 1996, astro-ph/9612118.

[256]  Donald Q. Lamb,et al.  Gamma-Ray Bursts as a Probe of the Very High Redshift Universe , 2000 .

[257]  D. Frail,et al.  The radio afterglow from the γ-ray burst of 8 May 1997 , 1997, Nature.

[258]  J. Rachen,et al.  Photohadronic neutrinos from transients in astrophysical sources , 1998, astro-ph/9802280.

[259]  Z. Dai,et al.  Gamma-ray burst afterglows from jetted shocks in wind environments , 2000, astro-ph/0010244.

[260]  Z. Dai,et al.  Hydrodynamics of Relativistic Blast Waves in a Density-Jump Medium and Their Emission Signature , 2001, astro-ph/0111454.

[261]  J. P. Osborne,et al.  The signature of supernova ejecta in the X-ray afterglow of the γ-ray burst 011211 , 2002, Nature.

[262]  J. Rhoads,et al.  Radio Transients from Gamma-Ray Bursters , 1993, astro-ph/9307024.

[263]  R. Sari,et al.  Optical flashes and radio flares in GRB afterglows: Numerical study , 2000 .

[264]  J. van Paradijs,et al.  UvA-DARE ( Digital Academic Repository ) Gamma-Ray Burst afterglows , 2000 .

[265]  Re'em Sari,et al.  On the Synchrotron Self-Compton Emission from Relativistic Shocks and Its Implications for Gamma-Ray Burst Afterglows , 2000, astro-ph/0005253.

[266]  Bing Zhang,et al.  GRB 021004: Reverse Shock Emission , 2003 .

[267]  W. Kluźniak,et al.  The Central Engine of Gamma-Ray Bursters , 1997, astro-ph/9712320.

[268]  Enrico Ramirez-Ruiz,et al.  Possible detection of hard X-ray afterglows of short $\gamma$-ray bursts , 2001 .

[269]  D. Guetta,et al.  Neutrinos of energy approximately 10(16) eV from gamma-ray bursts in pulsar wind bubbles. , 2003, Physical review letters.

[270]  M. Rees,et al.  GRB 990123: reverse and internal shock flashes and late afterglow behaviour , 1999 .

[271]  D. Frail,et al.  Jets in Gamma-Ray Bursts: Tests and Predictions for the Structured Jet Model , 2003, astro-ph/0305145.

[272]  N. Vlahakis,et al.  Relativistic Magnetohydrodynamics with Application to Gamma-Ray Burst Outflows. II. Semianalytic Super-Alfvénic Solutions , 2003, astro-ph/0303483.

[273]  T. Piran,et al.  Cosmological gamma-ray bursts: internal versus external shocks , 1996, astro-ph/9608152.

[274]  Abraham Loeb,et al.  Variability of Gamma-Ray Burst Afterglows due to Interstellar Turbulence , 1999, astro-ph/9910477.

[275]  R. Yamazaki,et al.  Near-Infrared Colors of Gamma-Ray Burst Afterglows and Cosmic Reionization History , 2003, astro-ph/0308206.

[276]  Neutrino, Neutron, and Cosmic-Ray Production in the External Shock Model of Gamma-Ray Bursts , 2000, astro-ph/0005440.

[277]  Charles D. Dermer,et al.  Beaming, Baryon Loading, and the Synchrotron Self-Compton Component in Gamma-Ray Bursts , 2000 .

[278]  C. Bianco,et al.  On the Interpretation of the Burst Structure of Gamma-Ray Bursts , 2001, astro-ph/0106532.

[279]  D. Guetta,et al.  High-Energy Emission from the Prompt Gamma-Ray Burst , 2002, astro-ph/0209578.

[280]  Martin J. Rees,et al.  Collapsar Jets, Bubbles, and Fe Lines , 2001 .

[281]  D. Watson,et al.  Temporal properties of the short gamma-ray bursts , 2001 .

[282]  T. Abel,et al.  Detectability of Long GRB Afterglows From Very High Redshifts , 2004 .

[283]  J. Rhoads The Dynamics and Light Curves of Beamed Gamma-Ray Burst Afterglows , 1999, astro-ph/9903399.

[284]  Ryan Chornock,et al.  The Early Light Curve of the Optical Afterglow of GRB 021211 , 2003, astro-ph/0302136.

[285]  C. Dermer,et al.  Early Gamma-Ray Burst Afterglows from Relativistic Blast Waves in General Radiative Regimes , 1999, astro-ph/9907270.

[286]  S. R. Kulkarni,et al.  Discovery of Early Optical Emission from GRB 021211 , 2003, astro-ph/0301377.

[287]  Luminosity function of gamma-ray bursts derived without benefit of redshifts , 2001, astro-ph/0101163.

[288]  A. Gal-Yam,et al.  Early optical emission from the γ-ray burst of 4 October 2002 , 2003, Nature.

[289]  Tsvi Piran,et al.  Astrophysics: refreshed shocks from a γ-ray burst , 2003, Nature.

[290]  F. W. Stecker,et al.  Extragalactic Gamma-Ray Absorption and the Intrinsic Spectrum of Markarian 501 during the 1997 Flare , 2001 .

[291]  J. P. Norris,et al.  Connection between Energy-dependent Lags and Peak Luminosity in Gamma-Ray Bursts , 1999, astro-ph/9903233.

[292]  C. Dermer,et al.  A New Approach to Statistics of Cosmological Gamma-Ray Bursts , 1998, astro-ph/9812059.

[293]  Jonathan Granot,et al.  Constraining the Structure of Gamma-Ray Burst Jets through the Afterglow Light Curves , 2003 .

[294]  P. Vreeswijk,et al.  A hypernova model for the supernova associated with the γ-ray burst of 25 April 1998 , 1998, Nature.

[295]  Edward L. Chupp,et al.  Spectral evolution of pulse structures in gamma-ray bursts , 1986 .

[296]  C. Kouveliotou,et al.  Spatial distribution of γ-ray bursts observed by BATSE , 1992, Nature.

[297]  M. Rees,et al.  Viewing Angle and Environment Effects in Gamma-Ray Bursts: Sources of Afterglow Diversity , 1997, astro-ph/9709273.

[298]  Ming Deng,et al.  Redshifts and Luminosities for 112 Gamma-Ray Bursts , 2001 .

[299]  S. E. Woosley,et al.  Supernovae, Jets, and Collapsars , 1999, astro-ph/9910034.

[300]  P. Mészáros,et al.  Polarized Gravitational Waves from Gamma-Ray Bursts , 2002, astro-ph/0212539.

[301]  Jay D. Salmonson,et al.  Discovery of a Tight Correlation between Pulse Lag/Luminosity and Jet-Break Times: A Connection between Gamma-Ray Bursts and Afterglow Properties , 2001, astro-ph/0112298.

[302]  Michael L. Norman,et al.  The Formation of the First Star in the Universe , 2001, Science.

[303]  M. Rees,et al.  Compton dragged gamma‐ray bursts: the spectrum , 2000, astro-ph/0002049.

[304]  T. Regimbau,et al.  Observational Evidence for a Correlation between Peak Luminosities and Beaming in Gamma-Ray Bursts , 2003, astro-ph/0307058.

[305]  Nuclear Composition of Gamma-Ray Burst Fireballs , 2002, astro-ph/0210522.

[306]  Ryan Chornock,et al.  GRB 021004: A Possible Shell Nebula around a Wolf-Rayet Star Gamma-Ray Burst Progenitor , 2003, astro-ph/0303616.

[307]  G. Gisler,et al.  Evidence for TeV Emission from GRB 970417a , 2000 .

[308]  M. Feroci,et al.  Discovery of a Redshifted Iron K Line in the X-Ray Afterglow of GRB 000214 , 2000 .

[309]  A Gamma-Ray Burst Model with Small Baryon Contamination , 1998, astro-ph/9808355.

[310]  E. Ramirez-Ruiz,et al.  GRB 990123: Evidence that the Gamma Rays Come from a Central Engine , 1999, astro-ph/9902007.

[311]  Measuring gravitational waves from binary black hole coalescences. I. Signal to noise for inspiral, merger, and ringdown , 1997, gr-qc/9701039.

[312]  Andrei M. Beloborodov On the Efficiency of Internal Shocks in Gamma-Ray Bursts , 2000 .

[313]  Re'em Sari,et al.  Ultraefficient Internal Shocks , 2000, astro-ph/0101006.

[314]  E. Liang Saturated Compton Cooling Model of Cosmological Gamma-Ray Bursts , 1997 .

[315]  C. Kennel,et al.  Confinement of the Crab pulsar's wind by its supernova remnant , 1984 .

[316]  E. Rees Gamma‐ray burst afterglow emission with a decaying magnetic field , 2002, astro-ph/0204406.

[317]  Bruce A. Peterson,et al.  On the Density of Neutral Hydrogen in Intergalactic Space , 1965 .

[318]  P. Mészáros,et al.  Dynamical Evolution, Light Curves, and Spectra of Spherical and Collimated Gamma-Ray Burst Remnants , 1998, astro-ph/9806016.

[319]  M. Rees,et al.  Gasdynamics of relativistically expanding gamma-ray burst sources : kinematics, energetics, magnetic fields, and efficiency , 1993, astro-ph/9301007.

[320]  Radio scintillation of gamma-ray-burst afterglows , 1997, astro-ph/9706084.

[321]  K. Pedersen,et al.  A very energetic supernova associated with the γ-ray burst of 29 March 2003 , 2003, Nature.

[322]  M. Rees,et al.  Iron K Lines from Gamma Ray Bursts , 2001, astro-ph/0110654.

[323]  Detecting an association between gamma-ray and gravitational wave bursts , 1999, gr-qc/9903101.

[324]  Y. F. Huang,et al.  Gamma‐ray bursts: optical afterglows in the deep Newtonian phase , 2003, astro-ph/0301387.

[325]  G. Share,et al.  A Search for Hard-Spectrum Gamma-Ray Bursts Using SMM , 1998 .

[326]  R. Ouyed,et al.  Astronomy & Astrophysics manuscript no. (will be inserted by hand later) Quark Stars as inner engines for Gamma Ray Bursts? , 2002 .

[327]  Wijers,et al.  UvA-DARE ( Digital Academic Repository ) Physical parametres of GRB 970508 and GRB 971214 from their afterglow synchroton emission , 1999 .

[328]  C. Kouveliotou,et al.  Gamma Ray Bursts Are Time-asymmetric , 1993 .

[329]  H Germany,et al.  Precursor Plerionic Activity and High-Energy Gamma-Ray Emission in the Supranova Model of Gamma-Ray Bursts , 2001, astro-ph/0111591.

[330]  P. Meszaros,et al.  Delayed X-Ray Afterglows from Obscured Gamma-Ray Bursts in Star-forming Regions , 2000 .

[331]  P. Mészáros,et al.  Rings in Fireball Afterglows , 1997, astro-ph/9709284.

[332]  Martin J. Rees,et al.  Fe Kα Emission from a Decaying Magnetar Model of Gamma-Ray Bursts , 2000 .

[333]  Jordi Miralda-Escudé,et al.  The Dark Age of the Universe , 2003, Science.

[334]  J. Granot,et al.  Gamma-Ray Burst Afterglows in Pulsar-Wind Bubbles , 2001, astro-ph/0112087.

[335]  S. R. Kulkarni,et al.  The Afterglow and the Host Galaxy of the Dark Burst GRB 970828 , 2001, astro-ph/0107539.

[336]  Duccio Macchetto,et al.  Hubble Space Telescope and Palomar imaging of GRB 990123: Implications for the nature of gamma-ray bursts and their hosts , 1999 .

[337]  Abraham Loeb,et al.  In the Beginning: The First Sources of Light and the Reionization of the Universe , 2000 .

[338]  C. Thompson A Model of gamma-ray bursts , 1994 .

[339]  T. Piran,et al.  Accretion Models of Gamma-Ray Bursts , 2001, astro-ph/0103360.

[340]  W. S. Paciesas,et al.  The BATSE Gamma-Ray Burst Spectral Catalog. I. High Time Resolution Spectroscopy of Bright Bursts Using High Energy Resolution Data , 2000 .

[341]  Search for sub-TeV gamma rays in coincidence with gamma ray bursts , 2003, astro-ph/0306370.

[342]  J. Grove,et al.  Osse limits on pre- and post-burst emission , 1995 .

[343]  M. Rees,et al.  A qualitative study of cosmic fireballs and γ-ray bursts , 1978 .

[344]  Robert Antonucci,et al.  Unified models for active galactic nuclei and quasars , 1993 .

[345]  S. Djorgovski,et al.  Identification of a host galaxy at redshift z = 3.42 for the γ-ray burst of 14 December 1997 , 1998, Nature.

[346]  E. Berger,et al.  A common origin for cosmic explosions inferred from calorimetry of GRB030329 , 2003, Nature.

[347]  M. Rees,et al.  Compton-dragged Gamma-Ray Bursts Associated with Supernovae , 1999, The Astrophysical journal.

[348]  Lynnette M. Dray,et al.  Winds from massive stars: implications for the afterglows of γ‐ray bursts , 2000, astro-ph/0012396.

[349]  Glen P. Double,et al.  Nonlinear particle acceleration in relativistic shocks , 2002 .

[350]  A. Mastichiadis,et al.  The “Supercritical Pile” Model for Gamma-Ray Bursts: Getting the νFν Peak at 1 MeV , 2002, astro-ph/0208590.

[351]  A. Achterberg,et al.  Ultra-high-energy cosmic ray acceleration by relativistic blast waves , 1998, astro-ph/9812316.

[352]  A. Beloborodov,et al.  Neutron-fed Afterglows of Gamma-Ray Bursts , 2002, astro-ph/0209228.

[353]  M. Smolsky,et al.  Nonthermal Radiation of Cosmological Gamma-Ray Bursters , 1999 .

[354]  Tsvi Piran,et al.  Gravitational Waves and gamma -Ray Bursts , 1993 .

[355]  Eli Waxman,et al.  Gamma-ray burst afterglow: Polarization and analytic light curves , 1999 .

[356]  Dermer,et al.  Flash Heating of Circumstellar Clouds by Gamma-Ray Bursts. , 2000, The Astrophysical journal.

[357]  S. Dado,et al.  On the radio afterglow of gamma ray bursts , 2002, astro-ph/0204474.

[358]  F. A. Harrison,et al.  A Study of the Afterglows of Four Gamma-Ray Bursts: Constraining the Explosion and Fireball Model , 2003, astro-ph/0307056.

[359]  Martí,et al.  Relativistic Jets from Collapsars , 1999, The Astrophysical journal.

[360]  Physical parameters and emission mechanism in gamma-ray bursts , 2000, astro-ph/0006239.

[361]  J. Salmonson On the Kinematics of GRB 980425 and Its association with SN 1998bw , 2000, astro-ph/0010123.

[362]  Z. Dai,et al.  Prompt High-Energy Gamma-Ray Emission from the Synchrotron Self-Compton Process in the Reverse Shocks of Gamma-Ray Bursts , 2000, astro-ph/0010320.

[363]  D. Wei The afterglow of GRB 021211: Another case of reverse shock emission , 2003, astro-ph/0301345.

[364]  I. Csabai,et al.  Gamma photometric redshifts for long gamma-ray bursts , 2002, astro-ph/0211539.

[365]  D. Hartmann,et al.  Gamma-ray bursts , 1995 .

[366]  Y. Z. Fan,et al.  Optical Flash of GRB 990123: Constraints on the Physical Parameters of the Reverse Shock , 2002 .

[367]  Davide Lazzati,et al.  Time-dependent Photoionization in a Dusty Medium. I. Code Description and General Results , 2002, astro-ph/0206445.

[368]  K. Sheth,et al.  Millimeter Observations of GRB 030329: Continued Evidence for a Two-Component Jet , 2003 .

[369]  J. Atteia,et al.  A simple empirical redshift indicator for gamma-ray bursts , 2003, astro-ph/0304327.

[370]  Ray W. Klebesadel,et al.  Observations of Gamma-Ray Bursts of Cosmic Origin , 1973 .

[371]  D. M. Palmer,et al.  BATSE observations of gamma-ray burst spectra. 2: Peak energy evolution in bright, long bursts , 1994 .

[372]  Differential Rotation in Neutron Stars: Magnetic Braking and Viscous Damping , 2000, astro-ph/0010493.

[373]  C. Kouveliotou,et al.  The Fourth BATSE Gamma-Ray Burst Catalog (Revised) , 1999, astro-ph/9903205.

[374]  Tsvi Piran,et al.  Variability in GRB afterglows and GRB 021004 , 2002, astro-ph/0210631.

[375]  Daniel E. Reichart,et al.  Evidence for a Molecular Cloud Origin of Gamma-ray Bursts: Implications for the nature of star formation in the universe , 2002 .

[377]  Gamma-Ray Bursts: Afterglows and Central Engines , 2001, astro-ph/0101147.

[378]  E. Blackman,et al.  On Fueling Gamma-Ray Bursts and Their Afterglows with Pulsars , 1998, astro-ph/9802017.

[379]  M. Tavani A Shock Emission Model for Gamma-Ray Bursts. II. Spectral Properties , 1996 .

[380]  Lifan Wang,et al.  Asymmetric Supernovae, Pulsars, Magnetars, and Gamma-Ray Bursts , 2000 .

[381]  M. Ruffert,et al.  SIMULATIONS OF NON-AXISYMMETRIC ROTATIONAL CORE COLLAPSE , 1997, astro-ph/9711122.

[382]  B. Schaefer Gamma-Ray Burst Hubble Diagram to z = 4.5 , 2002, astro-ph/0212445.

[383]  E. Witten Cosmic separation of phases , 1984 .

[384]  P. Madau,et al.  Relativistic Winds from Compact Gamma-Ray Sources. II. Pair Loading and Radiative Acceleration in Gamma-Ray Bursts , 1999, astro-ph/9909111.

[385]  Tsvi Piran The Energy of Gamma-Ray Bursts , 2001 .

[386]  M. Livio,et al.  Nucleosynthesis, neutrino bursts and γ-rays from coalescing neutron stars , 1989, Nature.

[387]  C. Dermer,et al.  Short-Timescale Variability in the External Shock Model of Gamma-Ray Bursts , 1998, astro-ph/9809411.

[388]  Tokyo Institute of Technology,et al.  A Possible Emission Feature in an X-ray Afterglow of GRB970828 as a Radiative Recombination Edge , 2001, astro-ph/0107331.

[389]  Z. Dai,et al.  Gamma-ray bursts and afterglows from rotating strange starsand neutron stars , 1998, astro-ph/9810332.

[390]  A. Crider,et al.  Physical Model of Gamma-Ray Burst Spectral Evolution , 1997 .

[391]  S. Djorgovski,et al.  The afterglow, redshift and extreme energetics of the γ-ray burst of 23 January 1999 , 1999, Nature.

[392]  C. Thompson,et al.  The soft gamma repeaters as very strongly magnetized neutron stars - I. Radiative mechanism for outbursts , 1995 .

[393]  G. Rybicki,et al.  Radiative processes in astrophysics , 1979 .

[394]  Shiho Kobayashi,et al.  Light Curves of Gamma-Ray Burst Optical Flashes , 2000, astro-ph/0009319.

[395]  E. Ramirez-Ruiz,et al.  X-Ray-rich Gamma-Ray Bursts, Photospheres, and Variability , 2002, astro-ph/0205144.

[396]  R. Narayan,et al.  Observational Prospects for Afterglows of Short-Duration Gamma-Ray Bursts , 2001, astro-ph/0108132.

[397]  B. Mészáros High-Energy Spectral Components in Gamma-Ray Burst Afterglows , 2001, astro-ph/0103229.

[398]  D. Wei,et al.  Are there cosmological evolution trends on gamma-ray burst features? , 2002, astro-ph/0212513.

[399]  Gamma-ray bursts and the fireball model , 1998, astro-ph/9810256.

[400]  M. Rees,et al.  Events in the life of a cocoon surrounding a light, collapsar jet , 2002, astro-ph/0205108.

[401]  A. Panaitescu,et al.  Afterglow Emission from Naked Gamma-Ray Bursts , 2000, astro-ph/0006317.

[402]  Boulder,et al.  Axisymmetric Magnetohydrodynamic Simulations of the Collapsar Model for Gamma-Ray Bursts , 2003, astro-ph/0310002.

[403]  M. Rees,et al.  Shocked by GRB 970228: the afterglow of a cosmological fireball , 1997, astro-ph/9704153.

[404]  Shri R. Kulkarni,et al.  Implications of the Radio Afterglow from the Gamma-Ray Burst of 1997 May 8 , 1998 .

[405]  T. Piran,et al.  Time-scales in long gamma-ray bursts , 2002 .

[406]  Possible association of ultra-high-energy cosmic-ray events with strong gamma-ray bursts , 1995, astro-ph/9505009.

[407]  P. Mészáros,et al.  Power Density Spectra of Gamma-Ray Bursts in the Internal Shock Model , 1999, astro-ph/9905026.

[408]  T. Piran,et al.  Variability in GRBs - A Clue , 1997, astro-ph/9701002.

[409]  B. Paczyński Are Gamma-Ray Bursts in Star-Forming Regions? , 1997, astro-ph/9710086.

[410]  Z. Dai,et al.  Intrinsic parameters of GRB 990123 from its prompt optical flash and afterglow , 1999, astro-ph/9906062.

[411]  Blandford,et al.  Dust Echoes from Gamma-Ray Bursts , 2000, The Astrophysical journal.

[412]  John G. Kirk,et al.  Particle acceleration by ultrarelativistic shocks: theory and simulations , 2001, astro-ph/0107530.

[413]  Detectability of Long Gamma-Ray Burst Afterglows from Very High Redshifts , 2003, astro-ph/0307489.

[414]  Hyper- and Suspended-Accretion States of Rotating Black Holes and the Durations of Gamma-Ray Bursts , 2000, astro-ph/0010440.

[415]  Z. Dai,et al.  Gamma-ray burst afterglows: effects of radiative corrections and non-uniformity of the surrounding medium , 1998, astro-ph/9806305.

[416]  S. Djorgovski,et al.  Spectral constraints on the redshift of the optical counterpart to the γ-ray burst of 8 May 1997 , 1997, Nature.

[417]  J. I. Katz,et al.  Possible Evidence for Relativistic Shocks in Gamma-Ray Bursts , 1997, astro-ph/9703120.

[418]  Abraham Loeb,et al.  The Reionization of the Universe by the First Stars and Quasars , 2001 .

[419]  Bing Zhang,et al.  An Analysis of Gamma-Ray Burst Spectral Break Models , 2002 .

[420]  F. Frontera Gamma Ray Bursts in the Afterglow Era , 2003 .

[421]  Tsvi Piran,et al.  Some Observational Consequences of Gamma-Ray Burst Shock Models , 1999, astro-ph/9906002.

[422]  E. Waxman γ-Ray Burst Afterglow: Confirming the Cosmological Fireball Model , 1997, astro-ph/9705229.

[423]  Melvyn B. Davies,et al.  Gamma-ray bursts, supernova kicks, and gravitational radiation , 2002 .

[424]  J. Hjorth,et al.  Gamma-Ray Bursts in the Afterglow Era , 2001 .

[425]  P. Mészáros,et al.  Spectra of Unsteady Wind Models of Gamma-Ray Bursts , 1996, astro-ph/9609039.

[426]  Martin J. Rees,et al.  Compton drag as a mechanism for very high linear polarization in gamma-ray bursts , 2004 .

[427]  M. Feroci,et al.  Intrinsic spectra and energetics of BeppoSAX Gamma-Ray Bursts with known redshifts , 2002, astro-ph/0205230.

[428]  Gravitational Radiation from Gamma-Ray Burst Progenitors , 2002, astro-ph/0210211.

[429]  D. M. Wei,et al.  GRB afterglow light curves from uniform and non-uniform jets , 2003 .

[430]  V. Narayanan,et al.  A Survey of z > 5.7 Quasars in the Sloan Digital Sky Survey. II. Discovery of Three Additional Quasars at z > 6 , 2003, astro-ph/0301135.

[431]  P. Mészáros,et al.  Early X-Ray/Ultraviolet Line Signatures of Gamma-Ray Burst Progenitors and Hypernovae , 1999, astro-ph/9908243.

[432]  M. Putten LIGO/VIRGO Searches for Gravitational Radiation in Hypernovae , 2002, astro-ph/0207242.

[433]  Tsvi Piran,et al.  Predictions for the Very Early Afterglow and the Optical Flash , 1999, astro-ph/9901338.

[434]  Christopher Thompson,et al.  The Soft Gamma Repeaters as Very Strongly Magnetized Neutron Stars. II. Quiescent Neutrino, X-Ray, and Alfvén Wave Emission , 1996 .

[435]  J. Granot,et al.  Constraining the Structure of GRB Jets Through the Afterglow Light Curves , 2002 .

[436]  M. B. Davies,et al.  High-resolution calculations of merging neutron stars - I. Model description and hydrodynamic evolution , 2001, astro-ph/0110180.

[437]  Nathaniel R. Butler,et al.  The X-Ray Afterglows of GRB 020813 and GRB 021004 with Chandra HETGS: Possible Evidence for a Supernova Prior to GRB 020813 , 2003, astro-ph/0303539.

[438]  D. Frail,et al.  A Late-Time Flattening of Afterglow Light Curves , 2003, astro-ph/0308189.

[439]  A. Loeb,et al.  Empirical constraints on source properties and host galaxies of cosmological gamma-ray bursts , 1995, astro-ph/9503070.

[440]  S. Boggs,et al.  Polarization of the prompt γ-ray emission from the γ-ray burst of 6 December 2002 , 2003, Nature.

[441]  M. Rees,et al.  Optical and Long-Wavelength Afterglow from Gamma-Ray Bursts , 1996, astro-ph/9606043.

[442]  Jonathan Granot,et al.  Synchrotron Self-Absorption in Gamma-Ray Burst Afterglow , 1998, astro-ph/9808007.

[443]  Ben J Hicks,et al.  SPIE - The International Society for Optical Engineering , 2001 .

[444]  Chris L. Fryer,et al.  Black Hole-Neutron Star Mergers as Central Engines of Gamma-Ray Bursts , 1999, The Astrophysical journal.

[445]  D. Frail,et al.  The X-ray afterglow of GRB000926 observed by BeppoSAX and Chandra: A Mildly collimated fireball in a dense medium? , 2001, astro-ph/0103306.

[446]  T. Piran,et al.  Fluid Dynamics of Semiradiative Blast Waves , 1998, astro-ph/9803258.

[447]  L Piro,et al.  Observation of X-ray lines from a gamma-ray burst (GRB991216): evidence of moving ejecta from the progenitor. , 2000, Science.

[448]  S. R. Kulkarni,et al.  A Standard Kinetic Energy Reservoir in Gamma-Ray Burst Afterglows , 2003 .

[449]  Tsvi Piran,et al.  Energetics and Luminosity Function of Gamma-Ray Bursts , 1999 .

[450]  D. Bersier,et al.  Rapid UBVRI Follow-up of the Highly Collimated Optical Afterglow of GRB 010222 , 2001, astro-ph/0104329.

[451]  Jeremy S. Heyl,et al.  Broadband Modeling of GRB 021004 , 2003 .

[452]  D. Lazzati,et al.  Afterglow light curves, viewing angle and the jet structure of γ-ray bursts , 2002 .

[453]  Z. Dai,et al.  Afterglow Emission from Highly Collimated Jets with Flat Electron Spectra: Application to the GRB 010222 Case? , 2001, astro-ph/0105055.

[454]  Pawan Kumar,et al.  Steepening of Afterglow Decay for Jets Interacting with Stratified Media , 2000 .

[455]  J. Chiang,et al.  Spectral Energy Distributions of Gamma-Ray Bursts Energized by External Shocks , 1999, astro-ph/9910472.

[456]  B. Paczyński Gamma-ray bursters at cosmological distances , 1986 .

[457]  K. Greisen End to the cosmic ray spectrum , 1966 .

[458]  Davide Lazzati,et al.  Polarization light curves and position angle variation of beamed gamma-ray bursts , 1999, astro-ph/9906471.

[459]  M. Rees,et al.  Gamma-Ray Bursts: Multiwaveband Spectral Predictions for Blast Wave Models , 1993, astro-ph/9309011.

[460]  P. Norris IMPLICATIONS OF LAG-LUMINOSITY RELATIONSHIP FOR UNIFIED GRB PARADIGMS , 2022 .

[461]  Re'em Sari,et al.  Linear Polarization and Proper Motion in the Afterglow of Beamed Gamma-Ray Bursts , 1999, astro-ph/9906503.

[462]  J. Katz TWO POPULATIONS AND MODELS OF GAMMA-RAY BURSTS , 1992, astro-ph/9212006.

[463]  P. Mészáros,et al.  Theories of Gamma-Ray Bursts , 2001, astro-ph/0111170.

[464]  The Acceleration of Ultra--High-Energy Cosmic Rays in Gamma-Ray Bursts , 1995, astro-ph/9506081.

[465]  S. Djorgovski,et al.  The Host Galaxy of GRB 970508 , 1998, astro-ph/9807315.

[466]  M. Rees,et al.  e± Pair Cascades and Precursors in Gamma-Ray Bursts , 2000, astro-ph/0011284.

[467]  Re'em Sari,et al.  Optical Flashes and Radio Flares in Gamma-Ray Burst Afterglow: Numerical Study , 2000 .

[468]  L. Hanlon,et al.  Kerr black holes and time profiles of gamma ray bursts , 2002, astro-ph/0208349.

[469]  H I 21 Centimeter Absorption beyond the Epoch of Reionization , 2002, astro-ph/0205169.

[470]  Christoph Ries,et al.  Evolution of the polarization of the optical afterglow of the γ-ray burst GRB030329 , 2003, Nature.

[471]  Z. Dai,et al.  The Inverse Compton Emission Spectra in the Very Early Afterglows of Gamma-Ray Bursts , 2001, astro-ph/0104128.

[472]  S. Woosley Gamma-ray bursts from stellar mass accretion disks around black holes , 1993 .

[473]  P. Mészáros,et al.  Gamma-Ray bursts: accumulating afterglow implications, progenitor clues, and prospects. , 2001, Science.

[474]  Cosmological gamma-ray bursts and the highest energy cosmic rays. , 1995, Physical review letters.

[475]  Martin J. Rees,et al.  Soft X-ray emission lines in the early afterglow of gamma-ray bursts , 2002 .

[476]  P. Rees Gamma-ray bursts as X-ray depth-gauges of the Universe , 2003, astro-ph/0305115.

[477]  T. Piran,et al.  Spectra and Light Curves of Gamma-Ray Burst Afterglows , 1997, astro-ph/9712005.

[478]  G. Ghisellini,et al.  Quasi-thermal Comptonization and gamma-ray bursts , 1998, astro-ph/9812079.

[479]  A. Panaitescu,et al.  A unified treatment of the gamma-ray burst 021211 and its afterglow , 2003 .

[480]  J. Cannizzo,et al.  A NUMERICAL GAMMA-RAY BURST SIMULATION USING THREE-DIMENSIONAL RELATIVISTIC HYDRODYNAMICS: THE TRANSITION FROM SPHERICAL TO JETLIKE EXPANSION , 2003, astro-ph/0310113.

[481]  A. Beloborodov Radiation Front Sweeping the Ambient Medium of Gamma-Ray Bursts , 2001, astro-ph/0103321.

[482]  D. D. Marco,et al.  On the Generation of Ultra-High-Energy Cosmic Rays in Gamma-Ray Bursts: A Reappraisal , 2003 .

[483]  T. Lu,et al.  Diverse Temporal Properties of GRB Afterglow , 1998 .

[484]  Hui Li,et al.  Log-normal Distributions in Gamma-Ray Burst Time Histories , 1996, astro-ph/9607131.

[485]  Chris L. Fryer,et al.  Submitted to The Astrophysical Journal on May 24, 2000 X-ray spectral features from GRBs: Predictions of progenitor models , 2000 .

[486]  M. Rees,et al.  Relativistic fireballs: energy conversion and time-scales , 1992 .

[487]  F. Stecker Can gamma ray bursts produce the observed cosmic rays above 1020 eV , 1999, astro-ph/9911269.

[488]  D. Guetta,et al.  Observational implications of a plerionic environment for gamma-ray bursts , 2002, astro-ph/0208156.

[489]  J. Chiang,et al.  The External Shock Model of Gamma-Ray Bursts: Three Predictions and a Paradox Resolved , 1999, astro-ph/9902306.

[490]  Warren R. Brown,et al.  Spectroscopic Discovery of the Supernova 2003dh Associated with GRB 030329 , 2003, astro-ph/0304173.