Probing dark matter decay and annihilation with Fermi LAT observations of nearby galaxy clusters

Galaxy clusters are promising targets for indirect dark matter searches. Gamma-ray signatures from the decay or annihilation of dark matter particles inside these clusters could be observable with the Fermi Large Area Telescope (LAT). Based on three years of Fermi LAT gamma-ray data, we analyze the flux coming from eight nearby clusters individually as well as in a combined likelihood analysis. Concentrating mostly on signals from dark matter decay, we take into account uncertainties of the cluster masses as determined by X-ray observations and model the cluster emission as extended sources. Searching for different hadronic and leptonic decay and annihilation spectra, we do not find significant emission from any of the considered clusters and present limits on the dark matter lifetime and annihilation cross-section. We compare our lifetime limits derived from cluster observations with the limits that can be obtained from the extragalactic gamma-ray background (EGBG), and find that in case of hadronic decay the cluster limits become competitive at dark matter masses below a few hundred GeV. In case of leptonic decay, however, galaxy cluster limits are stronger than the limits from the EGBG over the full considered mass range. Finally, we show that in presence of dark matter substructures down to 10?6 solar masses the limits on the dark matter annihilation cross-section could improve by a factor of a few hundred, possibly going down to the thermal cross-section of 3 ? 10?26cm3s?1 for dark matter masses 150GeV and annihilation into b. As a direct application of our results, we derive limits on the lifetime of gravitino dark matter in scenarios with R-parity violation. Implications of these limits for the possible observation of long-lived superparticles at the LHC are discussed.

[1]  D. Hooper,et al.  Stringent constraints on the dark matter annihilation cross section from the region of the Galactic Center , 2012, 1209.3015.

[2]  N. Giglietto,et al.  A model-independent analysis of the Fermi Large Area Telescope gamma-ray data from the Milky Way dwarf galaxies and halo to constrain dark matter scenarios , 2012, 1203.6731.

[3]  Xiaoyuan Huang,et al.  Fermi LAT Search for Internal Bremsstrahlung Signatures from Dark Matter Annihilation , 2012, 1203.1312.

[4]  Carlos S. Frenk,et al.  Evidence for extended gamma-ray emission from galaxy clusters , 2012, 1201.1003.

[5]  D. Nagai,et al.  Fermi-LAT constraints on dark matter annihilation cross section from observations of the Fornax cluster , 2012, 1201.0753.

[6]  Infn,et al.  Conservative upper limits on WIMP annihilation cross section from Fermi-LAT γ-rays , 2011, 1112.4171.

[7]  C. Brook,et al.  HALO EXPANSION IN COSMOLOGICAL HYDRO SIMULATIONS: TOWARD A BARYONIC SOLUTION OF THE CUSP/CORE PROBLEM IN MASSIVE SPIRALS , 2011, 1111.5620.

[8]  A. Bolton,et al.  EVIDENCE FOR DARK MATTER CONTRACTION AND A SALPETER INITIAL MASS FUNCTION IN A MASSIVE EARLY-TYPE GALAXY , 2011, 1111.4215.

[9]  Vlasios Vasileiou,et al.  FERMI LARGE AREA TELESCOPE SECOND SOURCE CATALOG , 2011 .

[10]  S. Borgani,et al.  Statistics of substructures in dark matter haloes , 2011, 1111.1911.

[11]  D. Hooper,et al.  On The Origin Of The Gamma Rays From The Galactic Center , 2011, 1110.0006.

[12]  T Glanzman,et al.  Measurement of separate cosmic-ray electron and positron spectra with the fermi large area telescope. , 2011, Physical review letters.

[13]  A. Kravtsov,et al.  THE IMPACT OF BARYON PHYSICS ON THE STRUCTURE OF HIGH-REDSHIFT GALAXIES , 2011, 1108.5384.

[14]  T Glanzman,et al.  Constraining dark matter models from a combined analysis of Milky Way satellites with the Fermi Large Area Telescope. , 2011, Physical review letters.

[15]  A. Geringer-Sameth,et al.  Exclusion of canonical weakly interacting massive particles by joint analysis of Milky Way dwarf galaxies with data from the Fermi Gamma-Ray Space Telescope. , 2011, Physical review letters.

[16]  P. Jetzer,et al.  Dark Matter distribution in the Milky Way: microlensing and dynamical constraints , 2011, 1107.5810.

[17]  G. Zhu,et al.  A Model Independent Method to Study Dark Matter induced Leptons and Gamma rays , 2011, 1107.3024.

[18]  S. White,et al.  Where will supersymmetric dark matter first be seen , 2011, 1107.1916.

[19]  S. Bobrovskyi,et al.  Quasi-stable neutralinos at the LHC , 2011, 1107.0926.

[20]  Torsten Bringmann,et al.  On the Relevance of Sharp Gamma-Ray Features for Indirect Dark Matter Searches , 2011, 1106.1874.

[21]  J. Ellis,et al.  Galactic-centre gamma rays in CMSSM dark matter scenarios , 2011, 1106.0768.

[22]  Cambridge,et al.  How supernova feedback turns dark matter cusps into cores , 2011, 1106.0499.

[23]  M. Diaz,et al.  Gravitino Dark Matter and Neutrino Masses in Partial Split Supersymmetry , 2011, 1106.0308.

[24]  Lars Bergstrom,et al.  Prospects of detecting gamma-ray emission from galaxy clusters : Cosmic rays and dark matter annihilations , 2011, 1105.3240.

[25]  Instituto de Astrof'isica de Canarias,et al.  Dark matter searches with Cherenkov telescopes: nearby dwarf galaxies or local galaxy clusters? , 2011, 1104.3530.

[26]  Lucio Mayer,et al.  FORMING REALISTIC LATE-TYPE SPIRALS IN A ΛCDM UNIVERSE: THE ERIS SIMULATION , 2011, 1103.6030.

[27]  A. R. Bazer-Bachi,et al.  Search for a dark matter annihilation signal from the galactic center halo with H.E.S.S. , 2011, Physical review letters.

[28]  P. Munar-Adrover,et al.  Searches for dark matter annihilation signatures in the Segue 1 satellite galaxy with the MAGIC-I telescope , 2011, 1103.0477.

[29]  A. Bonafede,et al.  Fractional polarization and magnetic fields in the ICM , 2011, 1103.0277.

[30]  M. L. Garde.  Constraining Dark Matter Signal from a Combined Analysis of Milky Way Satellites with the Fermi-LAT , 2011, 1102.5701.

[31]  Gregory Dobler,et al.  THE FERMI GAMMA-RAY HAZE FROM DARK MATTER ANNIHILATIONS AND ANISOTROPIC DIFFUSION , 2011, 1102.5095.

[32]  A. Morselli,et al.  Search for Dark Matter with Fermi Large Area Telescope: The Galactic Center , 2011 .

[33]  G. Zhu,et al.  Gamma-rays from nearby clusters: Constraints on selected decaying dark matter models , 2011, 1101.5878.

[34]  G. Vertongen,et al.  Hunting dark matter gamma-ray lines with the Fermi LAT , 2011, 1101.2610.

[35]  G. Vertongen,et al.  Hunting 1-500 GeV Dark Matter Gamma-Ray Lines with the Fermi LAT , 2011 .

[36]  Karl Gebhardt,et al.  GALAXY KINEMATICS WITH VIRUS-P: THE DARK MATTER HALO OF M87 , 2011, 1101.1957.

[37]  A. Quirrenbach,et al.  H.E.S.S. constraints on dark matter annihilations towards the sculptor and carina dwarf galaxies , 2010, 1012.5602.

[38]  Mario Kadastik,et al.  PPPC 4 DM ID: a poor particle physicist cookbook for dark matter indirect detection , 2010, 1012.4515.

[39]  P. Scott,et al.  Direct constraints on the CMSSM using H.E.S.S. observations of the Galactic Centre and the Sagittarius dwarf galaxy , 2010 .

[40]  J. P. Harding,et al.  Current and Future Constraints on Dark Matter from Prompt and Inverse-Compton Photon Emission in the Isotropic Diffuse Gamma-ray Background , 2010, 1011.5090.

[41]  P. Giommi,et al.  Fermi LAT observations of cosmic-ray electrons from 7 GeV to 1 TeV , 2010 .

[42]  C. Weniger,et al.  Gamma-ray lines from radiative dark matter decay , 2010, 1011.3786.

[43]  D. Hooper,et al.  Dark matter annihilation in the Galactic Center as seen by the Fermi Gamma Ray Space Telescope , 2010, 1010.2752.

[44]  T. Jeltema,et al.  Constraints on decaying dark matter from Fermi observations of nearby galaxies and clusters , 2010, 1009.5988.

[45]  S. Profumo,et al.  Singlet scalar dark matter: Monochromatic gamma rays and metastable vacua , 2010, 1009.5377.

[46]  G. Bertone,et al.  Gamma ray lines from a universal extra dimension , 2010, 1009.5107.

[47]  J. Cembranos,et al.  Photon spectra from WIMP annihilation , 2010, 1009.4936.

[48]  Alan D. Martin,et al.  Review of Particle Physics , 2010 .

[49]  T. Ensslin,et al.  Cosmic ray transport in galaxy clusters: implications for radio halos, gamma-ray signatures, and cool core heating , 2010, 1008.4717.

[50]  F. Collaboration.  Fermi LAT observations of cosmic-ray electrons from 7 GeV to 1 TeV , 2010, 1008.3999.

[51]  G. Vertongen,et al.  Matter and dark matter from false vacuum decay , 2010, 1008.2355.

[52]  C. Weniger,et al.  Dynamical matter-parity breaking and gravitino dark matter , 2010, 1008.0398.

[53]  K. Nakayama,et al.  Constraint on the gravitino mass in hybrid inflation , 2010, 1007.5152.

[54]  I. Zhuravleva,et al.  Steepening mass profiles, dark matter and environment of X-ray bright elliptical galaxies , 2010, 1007.5322.

[55]  S. Bobrovskyi,et al.  Broken R-parity in the sky and at the LHC , 2010, 1007.5007.

[56]  A. Bolton,et al.  DARK MATTER CONTRACTION AND THE STELLAR CONTENT OF MASSIVE EARLY-TYPE GALAXIES: DISFAVORING “LIGHT” INITIAL MASS FUNCTIONS , 2010, 1007.2409.

[57]  V. Malvezzi,et al.  PAMELA results on the cosmic-ray antiproton flux from 60 MeV to 180 GeV in kinetic energy. , 2010, Physical review letters.

[58]  Pisin Chen,et al.  Constraining the detailed balance condition in Hořava gravity with cosmic accelerating expansion , 2010, 1007.0543.

[59]  T. Ylinen.  Annihilation Lines from Dark Matter with the Fermi‐LAT , 2010 .

[60]  R. Cai,et al.  Acoustic signatures in the Cosmic Microwave Background bispectrum from primordial magnetic fields , 2010, 1006.2985.

[61]  Jean-Luc Starck,et al.  GeV GAMMA-RAY FLUX UPPER LIMITS FROM CLUSTERS OF GALAXIES , 2010 .

[62]  N. Bernal,et al.  Constraining Dark Matter Properties with Gamma-Rays from the Galactic Center with Fermi-LAT , 2010, 1006.0477.

[63]  D. Finkbeiner,et al.  GIANT GAMMA-RAY BUBBLES FROM FERMI-LAT: ACTIVE GALACTIC NUCLEUS ACTIVITY OR BIPOLAR GALACTIC WIND? , 2010, 1005.5480.

[64]  Unlisted,et al.  Fermi LAT Search for Photon Lines from 30 to 200 GeV , 2010 .

[65]  P. N. Bhat,et al.  FERMI LARGE AREA TELESCOPE CONSTRAINTS ON THE GAMMA-RAY OPACITY OF THE UNIVERSE , 2010, 1005.0996.

[66]  C. Weniger,et al.  Supersymmetric leptogenesis with a light hidden sector , 2010, 1004.4890.

[67]  Yasushi Fukazawa,et al.  OBSERVATIONS OF MILKY WAY DWARF SPHEROIDAL GALAXIES WITH THE FERMI-LARGE AREA TELESCOPE DETECTOR AND CONSTRAINTS ON DARK MATTER MODELS , 2010 .

[68]  Kiwoon Choi,et al.  New decay modes of gravitino dark matter , 2010, 1003.3401.

[69]  P. Salucci,et al.  The dark matter density at the Sun’s location , 2010, 1003.3101.

[70]  G. Drake,et al.  Results from a search for light-mass dark matter with a p-type point contact germanium detector. , 2010, Physical review letters.

[71]  J. Chiang,et al.  Constraints on cosmological dark matter annihilation from the Fermi-LAT isotropic diffuse gamma-ray measurement , 2010, 1002.4415.

[72]  A. Klypin,et al.  DARK MATTER HALOS IN THE STANDARD COSMOLOGICAL MODEL: RESULTS FROM THE BOLSHOI SIMULATION , 2010, 1002.3660.

[73]  T Glanzman,et al.  Spectrum of the isotropic diffuse gamma-ray emission derived from first-year Fermi Large Area Telescope data. , 2010, Physical review letters.

[74]  Jean-Luc Starck,et al.  Constraints on dark matter annihilation in clusters of galaxies with the Fermi large area telescope , 2010, Journal of Cosmology and Astroparticle Physics.

[75]  P. Belli,et al.  New results from DAMA/LIBRA , 2010, 1002.1028.

[76]  Chinese Academy of Sciences,et al.  Gamma rays and neutrinos from dark matter annihilation in galaxy clusters , 2010, 1002.0197.

[77]  J. Chiang,et al.  Fermi large area telescope search for photon lines from 30 to 200 GeV and dark matter implications. , 2010, Physical review letters.

[78]  Edward J. Wollack,et al.  SEVEN-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE (WMAP) OBSERVATIONS: COSMOLOGICAL INTERPRETATION , 2010, 1001.4538.

[79]  D. Thompson,et al.  Observations of MilkyWay Dwarf Spheroidal galaxies with the Fermi-LAT detector and , 2010, 1001.4531.

[80]  S. Kay,et al.  Impact of baryon physics on dark matter structures: a detailed simulation study of halo density profiles , 2010, 1001.3447.

[81]  Astrophysics,et al.  WEAK-LENSING MASS MEASUREMENTS OF SUBSTRUCTURES IN COMA CLUSTER WITH SUBARU/SUPRIME-CAM , 2010, The Astrophysical Journal.

[82]  C. Weniger,et al.  Constraining decaying dark matter with Fermi LAT gamma-rays , 2009, 0912.4504.

[83]  C. Weniger,et al.  Intense Gamma-Ray Lines from Hidden Vector Dark Matter Decay , 2009, 0912.4496.

[84]  M. Pohl,et al.  FERMI CONSTRAINS DARK-MATTER ORIGIN OF HIGH-ENERGY POSITRON ANOMALY , 2009, 0912.1203.

[85]  A. Strumia,et al.  Robust implications on dark matter from the first FERMI sky γ map , 2009, 0912.0742.

[86]  P. Panci,et al.  Diffuse gamma ray constraints on annihilating or decaying Dark Matter after Fermi , 2009, 0912.0663.

[87]  E. al.,et al.  Dark Matter Search Results from the CDMS II Experiment , 2009, Science.

[88]  C. Jackson,et al.  Higgs in space , 2009, 0912.0004.

[89]  Jong-Chul Park,et al.  Dirac gaugino as leptophilic dark matter , 2009, 0911.5273.

[90]  S. Lola,et al.  Photon, Neutrino and Charged Particle Spectra from R-violating Gravitino Decays , 2009, 0911.3376.

[91]  H Germany,et al.  Dark matter response to galaxy formation , 2009, 0911.2316.

[92]  N. Padmanabhan,et al.  Testing adiabatic contraction with SDSS elliptical galaxies , 2009, 0911.2260.

[93]  B. Willman,et al.  Bulgeless dwarf galaxies and dark matter cores from supernova-driven outflows , 2009, Nature.

[94]  Gregory Dobler,et al.  THE FERMI HAZE: A GAMMA-RAY COUNTERPART TO THE MICROWAVE HAZE , 2009, 0910.4583.

[95]  F. Massaro,et al.  FERMI LARGE AREA TELESCOPE GAMMA-RAY DETECTION OF THE RADIO GALAXY M87 , 2009, 0910.3565.

[96]  J. Yokoyama,et al.  Gravitational wave background and non-Gaussianity as a probe of the curvaton scenario , 2009, 0910.0715.

[97]  C. Weniger,et al.  Detecting gamma-ray anisotropies from decaying dark matter: Prospects for Fermi LAT , 2009, 0909.3514.

[98]  M. Moles,et al.  MAGIC GAMMA-RAY TELESCOPE OBSERVATION OF THE PERSEUS CLUSTER OF GALAXIES: IMPLICATIONS FOR COSMIC RAYS, DARK MATTER, AND NGC 1275 , 2009, 0909.3267.

[99]  K. Zurek,et al.  Leptophilic dark matter from the lepton asymmetry. , 2009, Physical review letters.

[100]  Gianfranco Bertone,et al.  Implications of High-Resolution Simulations on Indirect Dark Matter Searches , 2009, 0908.0195.

[101]  K. Dolag,et al.  The Coma cluster magnetic field from Faraday rotation measures , 2009, 1002.0594.

[102]  J. Lavalle,et al.  On the Sunyaev-Zel'dovich effect from dark matter annihilation or decay in galaxy clusters , 2009, 0907.5589.

[103]  E. al.,et al.  Constraints on the multi-TeV particle population in the Coma galaxy cluster with HESS observations , 2009, 0907.0727.

[104]  F. T. Collaboration,et al.  Post-launch performance of the Fermi Large Area Telescope , 2009, 0907.0626.

[105]  R. Catena,et al.  A novel determination of the local dark matter density , 2009, 0907.0018.

[106]  D. Zerwas.  Supersymmetry , 2009, 0906.4632.

[107]  R. R. Austri,et al.  Gamma-ray detection from gravitino dark matter decay in the μνSSM , 2009, 0906.3681.

[108]  C. Weniger,et al.  Decaying dark matter in light of the PAMELA and Fermi LAT data , 2009, 0906.1571.

[109]  A. Ibarra,et al.  Probing Gravitino Dark Matter with PAMELA and Fermi , 2009, 0906.1187.

[110]  M. Buckley,et al.  High Energy Neutrinos As A Test of Leptophilic Dark Matter , 2009, 0905.4764.

[111]  T. Moroi,et al.  Cosmic Gamma-ray from inverse Compton process in unstable dark matter scenario , 2009, 0912.2486.

[112]  Lars Bergström,et al.  Gamma rays from dark matter annihilations strongly constrain the substructure in halos. , 2009, Physical review letters.

[113]  A. Strumia,et al.  Dark Matter Interpretations of the Electron/Positron Excesses after FERMI , 2009, 0905.0480.

[114]  et al,et al.  Probing the ATIC peak in the cosmic-ray electron spectrum with H.E.S.S. , 2009, 0905.0105.

[115]  F. Collaboration.  Measurement of the cosmic ray e+ +e- spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope. , 2009, Physical review letters.

[116]  P. Panci,et al.  Inverse Compton constraints on the Dark Matter e+e- excesses , 2009, 0904.3830.

[117]  Jean-Luc Starck,et al.  The On-orbit Calibrations for the Fermi Large Area Telescope , 2009, 0904.2226.

[118]  Robert P. Johnson,et al.  FERMI DISCOVERY OF GAMMA-RAY EMISSION FROM NGC 1275 , 2009, 0904.1904.

[119]  E. Dudas,et al.  (In)visible Z' and dark matter , 2009, 0904.1745.

[120]  G. C. Barbarino,et al.  An anomalous positron abundance in cosmic rays with energies 1.5–100 GeV , 2009, Nature.

[121]  G. Bertone,et al.  The WIMP Forest: Indirect Detection of a Chiral Square , 2009, 0904.1442.

[122]  L. Bergström.  Dark matter candidates , 2009, 0903.4849.

[123]  A. Ringwald,et al.  Cosmic rays from leptophilic dark matter decay via kinetic mixing , 2009, 0903.3625.

[124]  J. Ostriker,et al.  GRAVITATIONAL HEATING HELPS MAKE MASSIVE GALAXIES RED AND DEAD , 2009, 0903.2840.

[125]  Q. Yuan,et al.  Parameters in a class of leptophilic dark matter models from PAMELA, ATIC and FERMI , 2009, 0903.0122.

[126]  Torsten Bringmann,et al.  Particle models and the small-scale structure of dark matter , 2009, 0903.0189.

[127]  R. Essig,et al.  Bounds on Cross-sections and Lifetimes for Dark Matter Annihilation and Decay into Charged Leptons from Gamma-ray Observations of Dwarf Galaxies , 2009, 0902.4750.

[128]  D. Hooper,et al.  Gamma rays from dark matter annihilation in the central region of the Galaxy , 2009, 0902.2539.

[129]  M. Steinmetz,et al.  Galaxy-induced transformation of dark matter haloes , 2009, 0902.2477.

[130]  J. Chiang,et al.  THE LARGE AREA TELESCOPE ON THE FERMI GAMMA-RAY SPACE TELESCOPE MISSION , 2009, 0902.1089.

[131]  B. Kyae.  PAMELA/ATIC anomaly from the meta-stable extra dark matter component and the leptophilic Yukawa interaction , 2009, 0902.0071.

[132]  S. Tremaine,et al.  Galactic Dynamics: Second Edition , 2008 .

[133]  S. Dimopoulos,et al.  Astrophysical probes of unification , 2008, 0812.2075.

[134]  T. Jeltema,et al.  Gamma rays from clusters and groups of galaxies: Cosmic rays versus dark matter , 2008, 0812.0597.

[135]  A. R. Bazer-Bachi,et al.  Energy spectrum of cosmic-ray electrons at TeV energies. , 2008, Physical review letters.

[136]  Y. Jing,et al.  ACCURATE UNIVERSAL MODELS FOR THE MASS ACCRETION HISTORIES AND CONCENTRATIONS OF DARK MATTER HALOS , 2008, 0811.0828.

[137]  P. Fox,et al.  Leptophilic dark matter , 2008, 0811.0399.

[138]  G. C. Barbarino,et al.  Observation of an anomalous positron abundance in the cosmic radiation , 2008, 0810.4995.

[139]  R. Genzel,et al.  MONITORING STELLAR ORBITS AROUND THE MASSIVE BLACK HOLE IN THE GALACTIC CENTER , 2008, 0810.4674.

[140]  Carlos S. Frenk,et al.  The diversity and similarity of simulated cold dark matter haloes , 2008, 0810.1522.

[141]  A. Ibarra,et al.  Unstable Gravitino Dark Matter and Neutrino Flux , 2008, 0809.5030.

[142]  W. Buchmuller,et al.  Superparticle mass window from leptogenesis and decaying gravitino dark matter , 2008, 0809.4667.

[143]  Durham,et al.  The Aquarius Project: the subhaloes of galactic haloes , 2008, 0809.0898.

[144]  Durham,et al.  Prospects for detecting supersymmetric dark matter in the Galactic halo , 2008, Nature.

[145]  Joachim Stadel,et al.  Quantifying the heart of darkness with GHALO – a multibillion particle simulation of a galactic halo , 2008, 0808.2981.

[146]  Jessica R. Lu,et al.  Measuring Distance and Properties of the Milky Way’s Central Supermassive Black Hole with Stellar Orbits , 2008, 0808.2870.

[147]  J. Pradler,et al.  Constraints on supersymmetric models from catalytic primordial nucleosynthesis of beryllium , 2008, 0807.4287.

[148]  T. Moroi,et al.  Long-lived unstable superparticles at the LHC , 2008, 0807.0975.

[149]  M. Kuhlen,et al.  The Via Lactea INCITE simulation: Galactic dark matter substructure at high resolution , 2008, 0810.3614.

[150]  Robert P. Johnson,et al.  Pre-launch estimates for GLAST sensitivity to dark matter annihilation signals , 2008, 0806.2911.

[151]  S. Profumo.  Hunting the lightest lightest neutralinos , 2008, 0806.2150.

[152]  A. Hornstrup,et al.  CHANDRA CLUSTER COSMOLOGY PROJECT. II. SAMPLES AND X-RAY DATA REDUCTION , 2008, 0805.2207.

[153]  T. Moroi,et al.  High energy cosmic rays from the decay of gravitino dark matter , 2008, 0805.1133.

[154]  J. Stadel,et al.  Clumps and streams in the local dark matter distribution , 2008, Nature.

[155]  A. Ibarra,et al.  Antimatter signatures of gravitino dark matter decay , 2008, 0804.4596.

[156]  T. Moroi,et al.  Big-bang nucleosynthesis and gravitinos , 2008, 0804.3745.

[157]  Univ. Jing Gangshan,et al.  First results from DAMA/LIBRA and the combined results with DAMA/NaI , 2008, 0804.2741.

[158]  S. Kay,et al.  Dark matter halo concentrations in the Wilkinson Microwave Anisotropy Probe year 5 cosmology , 2008, 0804.2486.

[159]  John F. Beacom,et al.  Conservative Constraints on dark matter annihilation into gamma rays , 2008, 0803.0157.

[160]  R. Trotta.  Bayes in the sky: Bayesian inference and model selection in cosmology , 2008, 0803.4089.

[161]  P. Serpico,et al.  Optimal angular window for observing Dark Matter annihilation from the Galactic Center region: the case of gamma-ray lines , 2008, 0802.3245.

[162]  University of Torino,et al.  Positrons from dark matter annihilation in the galactic halo: Theoretical uncertainties , 2007, 0712.2312.

[163]  J. Wadsley,et al.  Stellar Feedback in Dwarf Galaxy Formation , 2007, Science.

[164]  S. Tremaine,et al.  Non-thermal pressure in M87 and NGC 1399 gas: X-ray vs. optical potential profiles , 2007 .

[165]  H. Yuksel,et al.  Circumscribing Late Dark Matter Decays Model Independently , 2007, 0711.2906.

[166]  S. White,et al.  The redshift dependence of the structure of massive Λ cold dark matter haloes , 2007, 0711.0746.

[167]  Lars Bergstrom,et al.  New gamma-ray contributions to supersymmetric dark matter annihilation , 2007, 0710.3169.

[168]  A. Ibarra,et al.  Gamma-ray spectrum from gravitino dark matter decay. , 2007, Physical review letters.

[169]  G. Bertone,et al.  Gamma-rays from decaying dark matter , 2007, 0709.2299.

[170]  S. Lola,et al.  Radiative gravitino decays from R-parity violation , 2007, 0707.2510.

[171]  J. Scargle,et al.  Statistical analysis of detection of, and upper limits on, dark matter lines , 2007 .

[172]  J. Scargle,et al.  Estimate for GLAST LAT Milky Way Dark Matter WIMP Line Sensitivity , 2007 .

[173]  D. Nagai,et al.  Gamma-ray probe of cosmic ray pressure in galaxy clusters and cosmological implications , 2007, 0705.2588.

[174]  P. Salucci,et al.  The universal rotation curve of spiral galaxies II: the dark matter distribution out to the virial radius , 2007, astro-ph/0703115.

[175]  K. Hamaguchi,et al.  Stau-catalyzed 6Li production in big-bang nucleosynthesis , 2007, hep-ph/0702274.

[176]  K. Hamaguchi,et al.  Gravitino dark matter in R-parity breaking vacua , 2007, hep-ph/0702184.

[177]  J. Ellis,et al.  On the Feasibility of a Stop NLSP in Gravitino Dark Matter Scenarios , 2007, hep-ph/0701229.

[178]  M. Sánchez-Conde.  Dark Matter annihilation in Draco: new considerations of the expected gamma flux , 2007, astro-ph/0701426.

[179]  A. Strumia,et al.  Thermal production of gravitinos , 2007, hep-ph/0701104.

[180]  J. Pradler,et al.  Constraints on the reheating temperature in gravitino dark matter scenarios , 2006, hep-ph/0612291.

[181]  A. Noutsos,et al.  HESS observations of the galactic center region and their possible dark matter interpretation. , 2006, Physical review letters.

[182]  M. Kamionkowski,et al.  Search with EGRET for a gamma ray line from the Galactic center , 2006, astro-ph/0610295.

[183]  J. Bullock,et al.  The X-Ray Concentration-Virial Mass Relation , 2006, astro-ph/0610135.

[184]  S. Tremaine,et al.  The Centers of Early-Type Galaxies with Hubble Space Telescope. VI. Bimodal Central Surface Brightness Profiles , 2006, astro-ph/0609762.

[185]  T. Moroi,et al.  Cosmological constraints on the gravitino LSP scenario with a sneutrino NLSP , 2006, hep-ph/0609246.

[186]  J. Pradler,et al.  Thermal gravitino production and collider tests of leptogenesis , 2006, hep-ph/0608344.

[187]  M. Fairbairn,et al.  Baryonic pinching of galactic dark matter halos , 2006, astro-ph/0608634.

[188]  J. Wadsley,et al.  The removal of cusps from galaxy centres by stellar feedback in the early Universe , 2006, Nature.

[189]  M. Pospelov.  Particle physics catalysis of thermal big bang nucleosynthesis. , 2006, Physical review letters.

[190]  S. Mrenna,et al.  PYTHIA 6.4 Physics and Manual , 2006, hep-ph/0603175.

[191]  Edward J. Wollack,et al.  Three Year Wilkinson Microwave Anistropy Probe (WMAP) Observations: Polarization Analysis , 2006, astro-ph/0603450.

[192]  M. Kamionkowski,et al.  What mass are the smallest protohalos? , 2006, Physical review letters.

[193]  M. Malkan,et al.  Intergalactic Photon Spectra from the Far-IR to the UV Lyman Limit for 0 < z < 6 and the Optical Depth of the Universe to High-Energy Gamma Rays , 2005, astro-ph/0510449.

[194]  B. Moore,et al.  Empirical Models for Dark Matter Halos. I. Nonparametric Construction of Density Profiles and Comparison with Parametric Models , 2005, astro-ph/0509417.

[195]  B. Moore,et al.  Empirical models for Dark Matter Halos , 2005 .

[196]  P. Ullio,et al.  Multi-frequency analysis of neutralino dark matter annihilations in the Coma cluster , 2005, astro-ph/0507575.

[197]  T. Bringmann,et al.  Gamma rays from heavy neutralino dark matter. , 2005, Physical review letters.

[198]  Konstantin T. Matchev,et al.  Robust Gamma Ray Signature of WIMP Dark Matter , 2005, hep-ph/0507194.

[199]  O. Valenzuela,et al.  Bars and Cold Dark Matter Halos , 2005, astro-ph/0506627.

[200]  F. Prada,et al.  Adiabatic compression and indirect detection of supersymmetric dark matter , 2005, hep-ph/0506204.

[201]  A. Green,et al.  The first WIMPy halos , 2005, astro-ph/0503387.

[202]  F. Prada,et al.  Dark matter annihilation in the milky way galaxy: effects of baryonic compression. , 2004, Physical review letters.

[203]  T. Bringmann,et al.  Two-photon annihilation of Kaluza–Klein dark matter , 2004, hep-ph/0412001.

[204]  S. Tremaine,et al.  The Centers of Early-Type Galaxies with Hubble Space Telescope. V. New WFPC2 Photometry , 2004, astro-ph/0412040.

[205]  T. Bringmann,et al.  Gamma rays from Kaluza-Klein dark matter. , 2004, Physical review letters.

[206]  T. Moroi,et al.  Big-Bang nucleosynthesis and hadronic decay of long-lived massive particles , 2004, astro-ph/0408426.

[207]  Infn,et al.  Neutralino annihilation into gamma-rays in the Milky Way and in external galaxies , 2004, hep-ph/0407342.

[208]  G. Bertone,et al.  Particle dark matter: Evidence, candidates and constraints , 2004, hep-ph/0404175.

[209]  Wolfgang A. Rolke,et al.  Limits and confidence intervals in the presence of nuisance parameters , 2004, physics/0403059.

[210]  W. Rolke,et al.  Confidence Intervals with Frequentist Treatment of Statistical and Systematic Uncertainties , 2004 .

[211]  P. Bari,et al.  Leptogenesis for pedestrians , 2004, hep-ph/0401240.

[212]  U. Washington,et al.  The inner structure of ΛCDM haloes – III. Universality and asymptotic slopes , 2003, astro-ph/0311231.

[213]  Stefan Hofmann,et al.  The power spectrum of SUSY-CDM on subgalactic scales , 2003, astro-ph/0309621.

[214]  P. Ullio,et al.  Cosmological dark matter annihilations into γ rays: A closer look , 2002, astro-ph/0207125.

[215]  G. Bertone,et al.  Annihilation radiation from a dark matter spike at the Galactic Centre , 2002, astro-ph/0203488.

[216]  A. Kravtsov,et al.  Sample Variance Considerations for Cluster Surveys , 2002, astro-ph/0203169.

[217]  M. Paolillo,et al.  Deep ROSAT HRI Observations of the NGC 1399/NGC 1404 Region: Morphology and Structure of the X-Ray Halo , 2001, astro-ph/0109342.

[218]  P. Ullio,et al.  Spectral gamma-ray signatures of cosmological dark matter annihilations. , 2001, Physical review letters.

[219]  H. Stoecker,et al.  Damping scales of neutralino cold dark matter , 2001, astro-ph/0104173.

[220]  Astrophysics,et al.  Substructure and Dynamics of the Fornax Cluster , 2000, astro-ph/0012415.

[221]  M. Yamaguchi,et al.  Gravitino Dark Matter without R-parity , 2000, hep-ph/0005214.

[222]  R. Bender,et al.  Orbital structure and mass distribution in elliptical galaxies , 2000 .

[223]  H. Böhringer,et al.  The Mass Function of an X-Ray Flux-limited Sample of Galaxy Clusters , 1999, astro-ph/0111285.

[224]  J. Silk,et al.  Dark matter annihilation at the galactic center , 1999, astro-ph/9906391.

[225]  Astrophysics,et al.  Cosmic rays, radio halos and nonthermal X-ray emission in clusters of galaxies , 1999, astro-ph/9905122.

[226]  G. Lake,et al.  Cold collapse and the core catastrophe , 1999, astro-ph/9903164.

[227]  D. McLaughlin,et al.  Evidence in Virgo for the Universal Dark Matter Halo , 1998, astro-ph/9812242.

[228]  S. Schindler,et al.  Morphology of the Virgo cluster: Gas versus galaxies , 1998, astro-ph/9811464.

[229]  Jae Sik Lee,et al.  Implication of Super-Kamiokande data on R-parity violation , 1998, hep-ph/9811201.

[230]  B. Mukhopādhyāẏa,et al.  Correlation between neutrino oscillations and collider signals of supersymmetry in an R-parity violating model , 1998, hep-ph/9808265.

[231]  P. Ullio,et al.  Observability of γ rays from dark matter neutralino annihilations in the Milky Way halo , 1997, astro-ph/9712318.

[232]  L. Bergström,et al.  Non-baryonic dark matter: observational evidence and detection methods , 1997, astro-ph/9712179.

[233]  R. Cousins,et al.  A Unified Approach to the Classical Statistical Analysis of Small Signals , 1997, physics/9711021.

[234]  G. Bryan,et al.  Statistical Properties of X-Ray Clusters: Analytic and Numerical Comparisons , 1997, astro-ph/9710107.

[235]  J. Bullock,et al.  The Cores of Dark Matter-dominated Galaxies: Theory versus Observations , 1997, astro-ph/9708176.

[236]  P. Ullio,et al.  Neutralino annihilation into a photon and a Z boson , 1997, hep-ph/9707333.

[237]  M. Perelstein,et al.  Neutralino annihilation into two photons , 1997, hep-ph/9706538.

[238]  W. Forman,et al.  X-Ray Emission from the Fornax Cluster , 1997 .

[239]  P. Ullio,et al.  Full one-loop calculation of neutralino annihilation into two photons , 1997, hep-ph/9706232.

[240]  S. White,et al.  A Universal Density Profile from Hierarchical Clustering , 1996, astro-ph/9611107.

[241]  Alan D. Martin,et al.  Note on Scalar Mesons , 2008 .

[242]  T. Boller,et al.  THE ROSAT ALL-SKY SURVEY BRIGHT SOURCE CATALOGUE , 1996, astro-ph/9909315.

[243]  S. Sarkar.  Big bang nucleosynthesis and physics beyond the standard model , 1996, hep-ph/9602260.

[244]  R. Arnowitt,et al.  Supersymmetric Dark Matter , 1995, hep-ph/9610460.

[245]  S. White,et al.  The Structure of cold dark matter halos , 1995, astro-ph/9508025.

[246]  A. Burkert.  The Structure of Dark Matter Halos in Dwarf Galaxies , 1995, astro-ph/9504041.

[247]  C. Hogan,et al.  Decaying dark matter. , 1994, Science.

[248]  Eichler.  TeV particles as weakly unstable dark matter. , 1989, Physical review letters.

[249]  Rudaz,et al.  Annihilation of heavy-neutral-fermion pairs into monochromatic gamma rays and its astrophysical implications. , 1989, Physical review. D, Particles and fields.

[250]  Bergström,et al.  Observable monochromatic photons from cosmic photino annihilation. , 1988, Physical review. D, Particles and fields.

[251]  G. Bicknell,et al.  The Mass Distribution of NGC 1399 from Optical and X-Ray Surface Photometry , 1988 .

[252]  J. Gunn,et al.  Galaxy formation by gravitational collapse , 1987 .

[253]  M. Fukugita,et al.  Baryogenesis without grand unification , 1986 .

[254]  Rudaz,et al.  Cosmic production of quarkonium? , 1986, Physical review letters.

[255]  S. Faber,et al.  Contraction of Dark Matter Galactic Halos Due to Baryonic Infall , 1986 .

[256]  S. Theisen,et al.  Cosmic quarkonium: A probe of dark matter. , 1986, Physical review letters.

[257]  J. Ellis,et al.  The Cosmology of Decaying Gravitinos , 1985 .

[258]  H. Pagels,et al.  Supersymmetry, Cosmology, and New Physics at Teraelectronvolt Energies , 1982 .

[259]  G. Blumenthal,et al.  BREMSSTRAHLUNG, SYNCHROTRON RADIATION, AND COMPTON SCATTERING OF HIGH- ENERGY ELECTRONS TRAVERSING DILUTE GASES. , 1970 .

[260]  S. S. Wilks.  The Large-Sample Distribution of the Likelihood Ratio for Testing Composite Hypotheses , 1938 .

[261]  Michael Korsmeier,et al.  Cosmic Rays , 1931, Science.

[262]  C. Velde,et al.  Search for Supersymmetry in pp Collisions at 7 TeV in Events with Jets and Missing Transverse Energy , 2011 .

[263]  C. Frenk,et al.  The Aquarius Project : the subhalos of galactic halos , 2008 .

[264]  D. Nagai,et al.  RESPONSE OF DARK MATTER HALOS TO CONDENSATION OF BARYONS : COSMOLOGICAL SIMULATIONS AND IMPROVED ADIABATIC CONTRACTION MODEL , 2008 .

[265]  Shaun Cole,et al.  The statistics of ΛCDM halo concentrations , 2007 .

[266]  ApJ in press Preprint typeset using L ATEX style emulateapj v. 6/22/04 EARLY SUPERSYMMETRIC COLD DARK MATTER SUBSTRUCTURE , 2006 .

[267]  S. McGaugh,et al.  Revised version submitted to The Astrophysical Journal Preprint typeset using L ATEX style emulateapj v. 04/03/99 THE COMPRESSION OF DARK MATTER HALOS BY BARYONIC INFALL , 2005 .

[268]  Edward J. Wollack,et al.  Accepted for Publication in the Astrophysical Journal Supplement Series , 2004 .

[269]  Accepted for publication in the Astrophysical Journal Dynamics of the Globular Cluster System Associated with M49 (NGC 4472): Cluster Orbital Properties and the Distribution of Dark Matter 1 , 2003 .

[270]  Carl J. Grillmair,et al.  The Centers of Early-Type Galaxies with HST.I.An Observational Survey , 1995 .

[271]  Astronomy & Astrophysics manuscript no. , 1991 .

[272]  Ya. B. Zel'Dovich,et al.  Astrophysical constraints on the mass of heavy stable neutral leptons , 1980 .

[273]  Preprint typeset in JHEP style- HYPER VERSION Direct Constraints on Minimal Supersymmetry from Fermi-LAT Observations of the Dwarf Galaxy Segue 1 , 2022 .

[274]  C. Yaguna,et al.  Indirect detection of gravitino dark matter including its three-body decays , 2010, 1007.1728.

[275]  Y. Mambrini.  ournal of C osmology and A stroparticle hysics J A clear Dark Matter gamma ray line generated by the Green-Schwarz mechanism , 2022 .