Anomalous Cosmic Rays: Messengers from the Outer Heliosphere

In this review much of the current knowledge about the physics of anomalous cosmic rays is surveyed. These energetic particles are, most probably, accelerated at the so-called heliospheric shock which terminates the supersonic solar wind expansion. After a presentation of the general scenario embracing a description of the heliosphere, the basic paradigm explaining the existence of anomalous cosmic rays and the relevant observations, the main problems connected to the physics of this particular cosmic-ray component are identified and discussed in detail. To this end, the characteristics of the progenitor as well as descendant particle populations, i.e. interstellar neutral atoms, pick-up ions, and energetic neutral atoms, and those of galactic cosmic rays are described from an observational as well as a theoretical perspective, as far as they are related to heliospheric research. The relevance of heliospheric physics is pointed out as a vital link between basic (plasma) physics and (extra-heliospheric) astrophysics as well as a test bed for astrophysical concepts.

[1]  D. Rucinski,et al.  On the asymmetry of the distribution of the anomalous cosmic-ray component in the heliosphere , 1994 .

[2]  W. I. Axford,et al.  Estimates of galactic cosmic ray spectra at low energies , 1983 .

[3]  L. Biermann.  Kometenschweife und solare Korpuskularstrahlung , 1951 .

[4]  W. I. Axford.  THE ACCELERATION OF COSMIC RAYS BY SHOCK WAVES , 1981 .

[5]  A. Cummings,et al.  Elemental Composition of the Anomalous Cosmic Ray Component , 1995 .

[6]  V. Ptuskin,et al.  Self‐consistent stochastic preacceleration of interstellar pickup ions in the solar wind including the effects of wave coupling and damping , 1998 .

[7]  P. Isenberg.  Interstellar pickup ions: Not just theory anymore , 1995 .

[8]  P. C. Liewer,et al.  Hybrid simulations of interstellar pickup ion acceleration at the solar wind termination shock , 1995 .

[9]  J. Jokipii,et al.  The polar heliospheric magnetic field , 1989 .

[10]  Ming Zhang.  A Path Integral Approach to the Theory of Heliospheric Cosmic-Ray Modulation , 1999 .

[11]  G. Zank,et al.  Modelling the heliosphere , 1996 .

[12]  Peter Meyer,et al.  Cosmic rays—astronomy with energetic particles , 1974 .

[13]  G. Zank,et al.  Self‐consistent acceleration of multiply reflected pickup ions at a quasi‐perpendicular solar wind termination shock: a fluid approach , 2000 .

[14]  R. Schunk.  Mathematical structure of transport equations for multispecies flows , 1977 .

[15]  R. Schlickeiser.  On the interplanetary transport of solar cosmic rays , 1988 .

[16]  P. Isenberg,et al.  Transport of anisotropic interstellar pickup ions on bent flux tubes , 1998 .

[17]  L. Spitzer.  Physics of fully ionized gases , 1956 .

[18]  В. Б. Баранов,et al.  О модели взаимодействия солнечный ветермежзвездная среда С двумя ударными волнами , 1976 .

[19]  E. Möbius,et al.  Determination of interstellar pickup ion distributions in the solar wind with SOHO and Cluster , 1996 .

[20]  S. Błeszyński.  Filtering of the local interstellar medium at the heliopause , 1987 .

[21]  H. Völk,et al.  New plasma instabilities in the solar wind , 1970 .

[22]  N. Vormbrock,et al.  On the collisional energy transfer between the constituents of the coronal plasma , 1995 .

[23]  M. Neugebauer,et al.  Alfvén Waves in the Solar Wind , 1968 .

[24]  J. Jokipii,et al.  Effects of drift on the transport of cosmic rays. VI - A three-dimensional model including diffusion , 1983 .

[25]  Reinhard Schlickeiser,et al.  Cosmic-ray transport and acceleration. I - Derivation of the kinetic equation and application to cosmic rays in static cold media. II - Cosmic rays in moving cold media with application to diffusive shock wave acceleration , 1989 .

[26]  T. Bogdan,et al.  Coupled quasi‐linear wave damping and stochastic acceleration of pickup ions in the solar wind , 1991 .

[27]  K. Ogilvie,et al.  Interaction of singly charged interstellar helium ions with the solar wind , 1973 .

[28]  H. Bruijn,et al.  Longitudinal gradients of the distribution of anomalous cosmic rays in the outer heliosphere , 1996 .

[29]  W. Webber,et al.  A new calculation of the cosmic-ray antiproton spectrum in the Galaxy and heliospheric modulation effects on this spectrum using a drift plus wavy current sheet model , 1989 .

[30]  M. Potgieter.  Heliospheric modulation of galactic electrons: Consequences of new calculations for the mean free path of electrons between 1 MeV and ∼10 GeV , 1996 .

[31]  G. Zank,et al.  The Heliospheric Hydrogen Distribution: A Multifluid Model , 1997 .

[32]  Johannes Geiss,et al.  Interstellar oxygen, nitrogen and neon in the heliosphere , 1994 .

[33]  H. Fahr.  Local interstellar oxygen in the heliosphere : its analytic representation and observational consequences , 1991 .

[34]  S. Peter Gary,et al.  Proton temperature anisotropy instabilities in the solar wind , 1976 .

[35]  H. Rosenbauer,et al.  The Ulysses neutral gas experiment: Determination of the velocity and temperature of the interstellar neutral helium , 1993 .

[36]  R. Golden,et al.  A reexamination of the cosmic-ray helium spectrum and the He-3/He-4 ratio at high energies , 1987 .

[37]  H. Fahr,et al.  Spectra of energized pick-up ions upstream of the two-dimensional heliospheric termination shock II. Acceleration by Alfvenic and by large-scale solar wind turbulences , 1997 .

[38]  Joke Blom,et al.  VLUGR3: a vectorizable adaptive grid solver for PDEs in 3D, Part I: algorithmic aspects and applications , 1994 .

[39]  E. Christian,et al.  Evidence for anomalous cosmic-ray hydrogen , 1988 .

[40]  J. Ormes,et al.  Implications of HEAO-3 data for the acceleration and propagation of galactic cosmic rays , 1983 .

[41]  G. Zank.  Interaction of the solar wind with the local interstellar medium: a theoretical perspective , 1995 .

[42]  M. Hattingh,et al.  Toward a Realistic Diffusion Tensor for Galactic Cosmic Rays , 1998 .

[43]  J. Burgers.  Flow equations for composite gases , 1969 .

[44]  R. Davidson,et al.  Electromagnetic instabilities produced by neutral‐particle ionization in interplanetary space , 1972 .

[45]  N. Vormbrock,et al.  Radial density, velocity and temperature profiles in a multi-species solar wind close to the coronal base: A self-consistent four-species model , 2000 .

[46]  L. Drury,et al.  An introduction to the theory of diffusive shock acceleration of energetic particles in tenuous plasmas , 1983 .

[47]  H. Moraal,et al.  The cosmic radiation in the heliosphere at successive solar minima: 3. Steady state drift solutions of the transport equation , 1993 .

[48]  S. A. Stephens,et al.  Production spectrum of gamma rays in interstellar space through neutral pion decay , 1981 .

[49]  H. Fahr,et al.  A 5-fluid hydrodynamic approach to model the solar system-interstellar medium interaction , 2000 .

[50]  A Two-dimensional, Self-consistent Model of Galactic Cosmic Rays in the Heliosphere , 1999, astro-ph/9908039.

[51]  G. Siscoe,et al.  Interstellar pickup H+ Ions at 8.3 AU: Pioneer 10 plasma and magnetic field analyses , 1996 .

[52]  V. Izmodenov,et al.  Self‐consistent model of the solar wind interaction with two‐component circumsolar interstellar cloud: Mutual influence of thermal plasma and galactic cosmic rays , 2000 .

[53]  S. Yanagita,et al.  A stochastic simulation method for the solar cycle modulation of cosmic rays , 1999 .

[54]  I. Lerche.  LANDAU POLES, BRANCH CUTS, AND SUPRA-LUMINOUS WAVES IN A ONE-DIMENSIONAL PLASMA. , 1969 .

[55]  G. Gloeckler,et al.  Solar modulation and the energy density of galactic cosmic rays. , 1967 .

[56]  T. Jones,et al.  Numerical studies of diffusive particle acceleration in supernova remnants , 1990 .

[57]  G. Zank,et al.  Interaction of a nonuniform solar wind with the local interstellar medium , 1996 .

[58]  T. H. Stix.  Waves in plasmas , 1992 .

[59]  H. Fahr,et al.  The physics of the heliospheric interface and its implications for LISM diagnostics , 1984 .

[60]  S. Suess,et al.  Ulysses solar wind plasma observations from pole to pole , 1995 .

[61]  P. Isenberg.  A hemispherical model of anisotropic interstellar pickup ions , 1997 .

[62]  H. Fahr,et al.  A Boltzmann-kinetic approach to describe the entrance of neutral interstellar hydrogen into the heliosphere , 1992 .

[63]  V. Izmodenov.  Penetration of the galactic cosmic rays into the heliosphere through LISM-solar wind interface , 1997 .

[64]  G. Zank,et al.  Interaction of the solar wind with the local interstellar medium: A multifluid approach , 1996 .

[65]  F. Mcdonald.  Cosmic-Ray Modulation in the Heliosphere A Phenomenological Study , 1998 .

[66]  S. Falle,et al.  Time-dependent cosmic ray modified shocks , 1987 .

[67]  J. Simpson,et al.  A New Test for Solar Modulation Theory: the 1972 May-July Low-Energy Galactic Cosmic-Ray Proton and Helium Spectra , 1973 .

[68]  J. R. Jokipii,et al.  Cosmic-ray-modified stellar winds. III - A numerical iterative approach , 1988 .

[69]  M. Potgieter,et al.  A new model to study galactic cosmic ray modulation in an asymmetrically bounded heliosphere , 1998 .

[70]  R. E. Marshak,et al.  Interplanetary Dynamical Processes , 1963 .

[71]  M. Potgieter,et al.  A transport model for the diffusive shock acceleration and modulation of anomalous cosmic rays in the heliosphere , 1996 .

[72]  L. Burlaga,et al.  Magnetic field strength distributions and spectra in the heliosphere and their significance for cosmic ray modulation: Voyager 1, 1980–1994 , 1998 .

[73]  L. Fisk.  On the acceleration of energetic particles in the interplanetary medium , 1976 .

[74]  W. Webber.  The interstellar cosmic ray spectrum and energy density. Interplanetary cosmic ray gradients and a new estimate of the boundary of the heliosphere , 1987 .

[75]  A. S. Lipatov,et al.  Pickup Ion Acceleration at Low- β p Perpendicular Shocks , 1999 .

[76]  N. Schwadron,et al.  Statistical acceleration of interstellar pick-up ions in co-rotating interaction regions , 1996 .

[77]  H. Fichtner,et al.  Exact algebraic dispersion relations for wave propagation in hot magnetized plasmas , 1993, Journal of Plasma Physics.

[78]  M. Potgieter.  The heliospheric modulation of galactic cosmic rays at solar minimum , 1997 .

[79]  R. Thomas.  Aerodynamic phenomena in stellar atmospheres , 1961 .

[80]  T. H. Stix.  Fast-wave heating of a two-component plasma , 1975 .

[81]  P. C. Liewer,et al.  Hybrid simulations of the effects of interstellar pickup hydrogen on the solar wind termination shock , 1993 .

[82]  The Parker propagator for spherical solar modulation , 2000 .

[83]  H. Fahr,et al.  The influence of the anomalous cosmic-ray component on the dynamics of the solar wind , 1992 .

[84]  A. Achterberg,et al.  Computation of cosmic-ray acceleration by Ito's stochastic differential equations , 1994 .

[85]  H. Fichtner,et al.  Signature of a three-dimensional heliosphere in the spectra of anomalous cosmic rays , 1999 .

[86]  L. Fisk.  The acceleration of energetic particles in the interplanetary medium by transit-time damping , 1976 .

[87]  D. Rucinski,et al.  Solar cycle dependence of the production of H+ pick-up ions in the inner heliosphere , 1995 .

[88]  G. Krymskiĭ.  A regular mechanism for the acceleration of charged particles on the front of a shock wave , 1977 .

[89]  E. Möbius,et al.  Direct observation of He+ pick-up ions of interstellar origin in the solar wind , 1985, Nature.

[90]  R. Sagdeev,et al.  Pickup ion energization by shock surfing , 1996 .

[91]  E. Christian,et al.  Observations of Anomalous Cosmic-Ray Hydrogen from the Voyager Spacecraft , 1995 .

[92]  Jr Leverett Davis,et al.  INTERPLANETARY MAGNETIC FIELDS AND COSMIC RAYS , 1955 .

[93]  A. S. Lipatov,et al.  The acceleration of pickup ions at shock waves: Test particle-mesh simulations , 1998 .

[94]  G. Webb,et al.  Cosmic-ray-modified stellar winds. II. A perturbation approach , 1988 .

[95]  D. Rucinski,et al.  The production of different pick-up ion species in the heliosphere and their convection towards the three-dimensional termination shock , 1993 .

[96]  G. Thomas,et al.  The Interstellar Wind and its Influence on the Interplanetary Environment , 1978 .

[97]  J. Ziemkiewicz.  The solar wind termination shock in the presence of cosmic rays , 1994 .

[98]  U. Mall,et al.  Determination of the heliospheric axis orientation-An opportunity for the Cassini Mission to Saturn , 1996 .

[99]  N. A. Krall,et al.  Principles of Plasma Physics , 1973 .

[100]  E. Parker.  Dynamics of the Interplanetary Gas and Magnetic Fields , 1958 .

[101]  W. Hubbard,et al.  Effects of particle drift on cosmic-ray transport. I. General properties, application to solar modulation , 1977 .

[102]  N. Schwadron,et al.  Direct observational evidence for a heliospheric magnetic field with large excursions in latitude , 1997 .

[103]  M. Potgieter,et al.  The simulation of complete 11 and 12 year modulation cycles for cosmic rays in the heliosphere using a drift model with global merged interaction regions , 1995 .

[104]  L. Fisk.  Motion of the footpoints of heliospheric magnetic field lines at the Sun : Implications for recurrent energetic particle events at high heliographic latitudes , 1996 .

[105]  G. Zank,et al.  The termination shock: Physical processes , 1995 .

[106]  C. Kennel,et al.  THERMAL ANISOTROPIES AND ELECTROMAGNETIC INSTABILITIES IN THE SOLAR WIND. , 1968 .

[107]  P. Gazis.  Solar cycle variation in the heliosphere , 1996 .

[108]  A. Czechowski,et al.  Can the direction of interstellar magnetic field be determined from the heliotail ENA flux? , 1998 .

[109]  E. Möbius,et al.  Ionization processes in the heliosphere — Rates and methods of their determination , 1996 .

[110]  G. Siscoe,et al.  On the flux and the energy spectrum of interstellar ions in the solar system , 1976 .

[111]  M. Potgieter,et al.  Acceleration of cosmic rays in the solar wind termination shock. I. A steady state technique in a spherically symmetric model , 1988 .

[112]  J. Ajello,et al.  Solar wind latitudinal variations deduced from Mariner 10 interplanetary H (1216 Å) observations. , 1979 .

[113]  W. Feldman,et al.  Electromagnetic instabilities driven by unequal proton beams in the solar wind , 1976 .

[114]  Joe Giacalone,et al.  The Transport of Cosmic Rays across a Turbulent Magnetic Field , 1999 .

[115]  L. Fisk.  An overview of the transport of galactic and anomalous cosmic rays in the heliosphere: Theory , 1999 .

[116]  P. Biermann.  Cosmic Rays I.: The cosmic ray spectrum between 10 TeV and 3 EeV , 1993, astro-ph/9301008.

[117]  W. I. Axford,et al.  Model structure of a cosmic ray mediated stellar or solar wind , 1988 .

[118]  D. Gurnett,et al.  Distances to the termination shock and heliopause from a simulation analysis of the 1992-93 heliospheric radio emission event , 1995 .

[119]  Charles W. Smith,et al.  Solar cycle variation of the interplanetary magnetic field spiral , 1991 .

[120]  J. Jokipii.  The anomalous component of cosmic rays , 1990 .

[121]  K. Hsieh,et al.  Probing the heliosphere with energetic hydrogen atoms , 1992 .

[122]  R. Schlickeiser,et al.  Cosmic-ray transport in accelerating flows , 1988 .

[123]  S. Petrera.  Cosmic-ray spectrum and composition: Ground observations , 1995 .

[124]  A. Czechowski,et al.  Distribution of ACR ions in the heliosheath and the related ENA flux , 1997 .

[125]  J. Ogden,et al.  Electromagnetic ion cyclotron instability driven by ion energy anisotropy in high‐beta plasmas , 1975 .

[126]  W. Feldman,et al.  A second‐order theory for k∥B0 electromagnetic instabilities , 1978 .

[127]  A. Cummings,et al.  Composition of anomalous cosmic rays and implications for the heliosphere , 1996 .

[128]  M. Potgieter,et al.  Cosmic ray modulation in a non-spherical heliospere during solar minimum conditions , 1997 .

[129]  G. Zank,et al.  Interaction of a nonuniform solar wind with the local interstellar medium: 2. A two‐fluid model , 1997 .

[130]  H. Fahr,et al.  Signatures of the Interplanetary Helium Cone Reflected by Pick-up Ions , 1999 .

[131]  U. Mall,et al.  Cassini as a heliospheric probe—the potential of pick-up ion measurements during its cruise phase , 1998 .

[132]  S. Peter Gary,et al.  Electromagnetic ion beam instabilities , 1984 .

[133]  R. S. Steinolfson,et al.  Gasdynamic models of the solar wind/interstellar medium interaction , 1994 .

[134]  P. Robinson,et al.  Approximation of the dielectric properties of Maxwellian plasmas: dispersion functions and physical constraints , 1988, Journal of Plasma Physics.

[135]  J. Lockwood,et al.  Cosmic-ray gradient measurements and modulation beyond the inner solar wind termination shock , 1990 .

[136]  H. Rosenbauer,et al.  Recent results on the parameters of the interstellar helium from the ULYSSES/GAS experiment , 1996 .

[137]  G. Webb,et al.  Cosmic ray-modified stellar winds. I - Solution topologies and singularities , 1987 .

[138]  G. Gloeckler,et al.  Differential Energy Spectra of Low-Energy (<8.5 MeV per Nucleon) Heavy Cosmic Rays during Solar Quiet Times , 1973 .

[139]  R. Schlickeiser,et al.  On Landau damping in hot equilibrium plasmas. I. Longitudinal oscillations along an external magnetic field , 1995 .

[140]  Jeremiah P. Ostriker,et al.  Particle Acceleration by Astrophysical Shocks , 1978 .

[141]  V. Ptuskin,et al.  Anomalous Diffusion of Cosmic Rays Across the Magnetic Field , 2008 .

[142]  B. Klecker,et al.  Anomalous cosmic ray oxygen gradients throughout the heliosphere , 1995 .

[143]  J. R. Jokipii.  Theory of Multiply Charged Anomalous Cosmic Rays , 1996 .

[144]  S. Suess.  Temporal variations in the termination shock distance , 1993 .

[145]  Harald Kucharek,et al.  Injection and acceleration of interstellar pickup ions at the heliospheric termination shock , 1995 .

[146]  R. B. Mckibben.  Modulation of Galactic Cosmic Rays in the Heliosphere , 1986 .

[147]  E. Marsch,et al.  The outer heliosphere : beyond the planets , 2000 .

[148]  H. Fahr,et al.  The acceleration time of anomalous cosmic rays: Observational constraints from Pioneer 10 data , 1998 .

[149]  W. Webber,et al.  and 1994 from observations of anomalous cosmic rays , 1996 .

[150]  L. Drury,et al.  Hydromagnetic shock structure in the presence of cosmic rays , 1981 .

[151]  E. Merényi,et al.  The gradient of galactic cosmic rays at the solar-wind termination shock , 1993 .

[152]  H. Fahr.  INTERPLANETARY HYDROGEN CONE AND ITS SOLAR-CYCLE VARIATIONS. , 1971 .

[153]  R. Schlickeiser,et al.  Interplanetary transport of solar electrons and protons: Effect of dissipative processes in the magnetic field power spectrum , 1993 .

[154]  A. Bell.  The non-linear self-regulation of cosmic ray acceleration at shocks , 1987 .

[155]  F. Mcdonald,et al.  The radial intensity gradients of galactic and anomalous cosmic rays , 1999 .

[156]  P. Isenberg.  Evolution of interstellar pickup ions in the solar wind , 1987 .

[157]  J. Geiss,et al.  Weak pitch angle scattering of few MV rigidity ions from measurements of anisotropies in the distribution function of interstellar pickup H , 1995 .

[158]  W. Webber,et al.  Pioneer 10 and Voyager 1 Observations of Anomalous Cosmic-Ray Hydrogen in the Outer Heliosphere , 1995 .

[159]  D. Melrose.  Covariant description of dispersion in a relativistic thermal electron gas , 1982 .

[160]  T. Gaisser.  Cosmic rays and particle physics , 2016 .

[161]  S. Peter Gary,et al.  Theory of Space Plasma Microinstabilities , 1993 .

[162]  E. Möbius,et al.  Acceleration and transport of energetic particles observed in the heliosphere : ACE-2000 Symposium, Indian Wells, California, 5-8 January 2000 , 2000 .

[163]  Burton D. Fried,et al.  The Plasma Dispersion Function , 1961 .

[164]  V. Baranov.  Gasdynamics of the solar wind interaction with the interstellar medium , 1990 .

[165]  T. Tanaka,et al.  MHD structure of the heliosphere and its response to the 11-year solar cycle variations , 1999 .

[166]  H. Fahr,et al.  INTERACTION BETWEEN INTERSTELLAR HYDROGEN AND THE SOLAR WIND. , 1970 .

[167]  D. Judge,et al.  Temperature and flow velocity of the interplanetary gases along solar radii , 1979 .

[168]  U. Mall,et al.  On the transport of pick-up ions in the heliosphere. , 1996 .

[169]  V. A. Dogiel,et al.  Astrophysics of cosmic rays , 1990 .

[170]  小野 周,et al.  L. Spitzer: Physics of Fully Ionized Gases, Interscience Tracts on Physics and astronomy, New york, 1956, 105頁, 13×21cm. , 1956 .

[171]  M. Ruderman,et al.  Structure of the region of solar wind—Interstellar medium interaction and its influence on H atoms penetrating the solar wind , 1979 .

[172]  U. Mall,et al.  Interstellar atom and pick-up ion fluxes along the Ulysses flight-path , 1996 .

[173]  V. D. Ozerov,et al.  A Study of the Interplanetary Ionized Gas, High-Energy Electrons and Corpuscular Radiation from the Sun by Means of the Three-Electrode Trap for Charged Particles on the Second Soviet Cosmic Rocket , 1960 .

[174]  C. M. Hammond,et al.  Ulysses Solar Wind Plasma Observations at High Southerly Latitudes , 1995, Science.

[175]  J. F. Mckenzie,et al.  The structure of cosmic ray shocks , 1982 .

[176]  W. Axford.  The modulation of galactic cosmic rays in the interplanetary medium. , 1965 .

[177]  H. Washimi,et al.  3-D magnetic field and current system in the heliosphere , 1996 .

[178]  J. Geiss,et al.  C+ pickup ions in the heliosphere and their origin , 1995 .

[179]  S. Ferreira.  Comparison of a Two- and Three-Dimensional Drift Model , 1999 .

[180]  R. Hartle,et al.  Further remarks on plasma instabilities produced by ions born in the solar wind , 1974 .

[181]  S. Chalov.  Longitudinal distribution of anomalous hydrogen near the solar wind termination shock , 1993 .

[182]  Jack R. Jokipii,et al.  Quest for the Limits of the Heliosphere , 1995 .

[183]  H. Fahr,et al.  Reflection of pre-accelerated pick-up ions at the solar wind termination shock: The seed for anomalous cosmic rays , 1996 .

[184]  G. Zank,et al.  Steady state and dynamical structure of a cosmic-ray-modified termination shock , 1993 .

[185]  J. R. Jokipii.  Constraints on the acceleration of anomalous cosmic rays , 1992 .

[186]  R. McGuire,et al.  The cosmic radiation in the heliosphere at successive solar minima , 1992 .

[187]  R. Schlickeiser.  Cosmic-Ray Transport and Acceleration. II. Cosmic Rays in Moving Cold Media with Application to Diffusive Shock Wave Acceleration , 1989 .

[188]  H. Grad.  Principles of the Kinetic Theory of Gases , 1958 .

[189]  H. Fahr,et al.  Physical reasons and consequences of a three-dimensionally structured heliosphere , 1991 .

[190]  K. Hsieh,et al.  Viewing the outer heliosphere in energetic neutral atoms , 1993 .

[191]  J. R. Jokipii.  Particle acceleration at a termination shock 1. Application to the solar wind and the anomalous component , 1986 .

[192]  K. Sawada,et al.  Numerical Simulations of Interaction between Stellar Wind and Interstellar Medium , 1989 .

[193]  J. Katz,et al.  Universal particle acceleration , 1991 .

[194]  H. Fahr.  Filtration of the interstellar neutrals at the heliospheric interface and their coupling to the solar wind. , 1990 .

[195]  T. Kakinuma.  Observations of Interplanetary Scintillation: Solar Wind Velocity Measurements , 1977 .

[196]  G. Zank,et al.  Particle injection and the structure of energetic-particle-modified shocks. [in astrophysics] , 1993 .

[197]  T. Holzer.  Interaction Between the Solar Wind and the Interstellar Medium , 1976 .

[198]  E. Smith.  Magnetic fields throughout the heliosphere , 1993 .

[199]  M. Mori.  The Galactic Diffuse Gamma-Ray Spectrum from Cosmic-Ray Proton Interactions , 1996, astro-ph/9611233.

[200]  J. Giacalone,et al.  Spatial variation of accelerated pickup ions at co‐rotating interaction regions , 1997 .

[201]  P. Frisch,et al.  Characteristics of nearby interstellar matter , 1995 .

[202]  J A Simpson,et al.  Elemental and Isotopic Composition of the Galactic Cosmic Rays , 1983 .

[203]  Philip L. Roe,et al.  Heliosphere in the magnetized local interstellar medium' Results of a three-dimensional MHD , 1998 .

[204]  R. Schlickeiser,et al.  Mode limitation and mode completion in collisionless plasmas , 1998, Journal of Plasma Physics.

[205]  B. Klecker.  The anomalous component of low-energy cosmic rays: A comparison of observed spectra with model calculations , 1977 .

[206]  D. Rucinski,et al.  Modulation of the interstellar oxygen-to-hydrogen ratio by the heliospheric interface plasma , 1995 .

[207]  H. Fahr.  On the influence of neutral interstellar matter on the upper atmosphere , 1968 .

[208]  P. Misra,et al.  Dispersion formulae for waves in a magneto-active relativistic plasma , 1980, Journal of Plasma Physics.

[209]  B. Klecker,et al.  8. The Ionic Charge Composition of Anomalous Cosmic Rays , 1998 .

[210]  R. Davidson.  Kinetic waves and instabilities in a uniform plasma , 1981 .

[211]  Cassini: A mission to Saturn and Titan , 1992 .

[212]  A. Dessler,et al.  Solar wind and interplanetary magnetic field , 1967 .

[213]  George H. Ludwig,et al.  Observation of High Intensity Radiation by Satellites 1958 Alpha and Gamma , 1958 .

[214]  P. Biermann.  Cosmic rays. 1. The Cosmic ray spectrum between 10**4-GeV and 3.10**9-GeV , 1993 .

[215]  R. Hartle,et al.  Effects of electrostatic instabilities on planetary and interstellar ions in the solar wind. , 1973 .

[216]  E. Marsch,et al.  Distribution of solar wind angular momentum between particles and magnetic field: Inferences about the Alfvén critical point from Helios observations , 1984 .

[217]  M. Vinokur,et al.  EFFECT OF VARYING STRENGTH AND ORIENTATION OF LOCAL INTERSTELLAR MAGNETIC FIELD ON CONFIGURATION OF EXTERIOR HELIOSPHERE : 3D MHD SIMULATIONS , 1998 .

[218]  J. A. V. Allen,et al.  THE OBSERVATION OF HIGH INTENSITY RADIATION BY SATELLITES 1958 /cap alpha/ AND $gamma$ , 1961 .

[219]  W. I. Axford,et al.  Detection of 55-80 keV Hydrogen Atoms of Heliospheric Origin by CELIAS/HSTOF on SOHO , 1998 .

[220]  J. Giacalone,et al.  The acceleration of pickup ions , 1996 .

[221]  S. Krimigis,et al.  Preacceleration of Anomalous Cosmic Rays in the Inner Heliosphere , 1997 .

[222]  C. Steenberg,et al.  An Acceleration/Modulation Model for Anomalous Cosmic-Ray Hydrogen in the Heliosphere , 1996 .

[223]  John W. Belcher,et al.  Voyager 2 fine‐scale velocity oscillations at 48 AU , 1996 .

[224]  G. Zank,et al.  An evaluation of perpendicular diffusion models regarding cosmic ray modulation on the basis of a hydromagnetic description for solar wind turbulence , 1999 .

[225]  Hannes Alfvén,et al.  Origin of Cosmic Radiation , 1933, Nature.

[226]  H. Fahr,et al.  Pick-up ion acceleration at the termination shock and the post-shock pick-up ion energy distribution , 2000 .

[227]  Richard M. Thorne,et al.  The modified plasma dispersion function , 1991 .

[228]  T. Tanaka,et al.  Solar cycle dependence of the heliospheric shape deduced from a global MHD simulation of the interaction process between a nonuniform time‐dependent solar wind and the local interstellar medium , 1999 .

[229]  H. Fichtner,et al.  The Influence of Pickup, Anomalous, and Galactic Cosmic-Ray Protons on the Structure of the Heliospheric Shock: A Self-Consistent Approach , 1997 .

[230]  D. A. Tidman,et al.  Plasma Kinetic Theory , 1964 .

[231]  L. Burlaga,et al.  Cosmic ray modulation and the distant heliospheric magnetic field: Voyager 1 and 2 observations from 1986 to 1989 , 1993 .

[232]  J. R. Jokipii.  Propagation of cosmic rays in the solar wind , 1971 .

[233]  Phase space diffusion and anisotropic pick-up ion distributions in the solar wind: an injection study , 1998 .

[234]  R. Schlickeiser,et al.  Relativistic kinetic theory of waves in isotropic plasmas , 1997, Journal of Plasma Physics.

[235]  H. Fichtner,et al.  On the propagation of Jovian electrons in the heliosphere: Transport modelling in 4‐D phase space , 2000 .

[236]  W. Webber,et al.  The interplanetary acceleration of energetic nucleons , 1976 .

[237]  M. Potgieter.  The Modulation of Galactic Cosmic Rays in the Heliosphere: Theory and Models , 1998 .

[238]  R. Z. Sagdeev,et al.  Cooperative Phenomena and Shock Waves in Collisionless Plasmas , 1966 .

[239]  E. Smith.  Magnetic fields in the heliosphere - Pioneer observations , 1990 .

[240]  F. Low,et al.  The Boltzmann equation an d the one-fluid hydromagnetic equations in the absence of particle collisions , 1956, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[241]  A. Cummings,et al.  Energy Spectra of Anomalous Cosmic-Ray Oxygen During 1977-1987 , 1987 .

[242]  Joe Giacalone,et al.  Ion injection and acceleration at quasi‐perpendicular shocks , 1994 .

[243]  W. Webber,et al.  The anomalous abundance of cosmic ray nitrogen and oxygen nuclei at low energies , 1974 .

[244]  Ming Zhang.  A Markov Stochastic Process Theory of Cosmic-Ray Modulation , 1999 .

[245]  M. Potgieter,et al.  A drift model for the modulation of galactic cosmic rays , 1985 .

[246]  H. Fahr,et al.  Cosmic-ray-driven galactic wind , 1991 .

[247]  R. Marsden.  The sun and the heliosphere in three dimensions : proceedings of the XIXth ESLAB symposium, held in Les Diablerets, Switzerland, 4-6 June 1985 , 1986 .

[248]  T. Shibata.  Cosmic-ray spectrum and composition; direct observation , 1996 .

[249]  Eugene N. Parker,et al.  THE PASSAGE OF ENERGETIC CHARGED PARTICLES THROUGH INTERPLANETARY SPACE , 1965 .

[250]  T. H. Stix,et al.  The Theory Of Plasma Waves , 1962 .

[251]  R. McGuire,et al.  Role of drifts and global merged interaction regions in the long-term modulation of cosmic rays , 1993 .

[252]  G. Bekefi,et al.  Radiation Processes in Plasmas , 1969 .

[253]  W. Matthaeus,et al.  The Cosmic Ray Diffusion Tensor in the Heliosphere , 1998 .

[254]  N. Schwadron,et al.  Implications of fluctuations in the distribution functions of interstellar pick‐up ions for the scattering of low rigidity particles , 1997 .

[255]  Mary Lee.  Effects of Cosmic Rays and Interstellar Gas on the Dynamics of a Wind , 1997 .

[256]  J. Ormes,et al.  Measurement of cosmic-ray proton and helium spectra during the 1987 solar minimum , 1991 .

[257]  H. Fahr,et al.  COSMIC RAY MODULATION AND A NON-SPHERICAL HELIOSPHERIC SHOCK , 1996 .

[258]  H. Fahr,et al.  A two-fluid model of the solar wind termination shock modified by shock-generated cosmic rays including energy losses , 1994 .

[259]  J. Brackbill,et al.  Motion of the termination shock in response to an 11 Year variation in the solar wind , 1995 .

[260]  G. Zank,et al.  Simulations of galactic and anomalous cosmic ray transport in the heliosphere , 1999 .

[261]  H. Balsiger,et al.  Detection of Interstellar Pick-Up Hydrogen in the Solar System , 1993, Science.

[262]  N. Vormbrock,et al.  Transfer integrals for fully ionized gases , 1996, Journal of Plasma Physics.

[263]  Roland Diehl,et al.  Diffuse continuum gamma rays from the Galaxy observed by COMPTEL , 1994 .

[264]  K. Murakami,et al.  Response and yield functions of neutron monitor, galactic cosmic-ray spectrum and its solar modulation, derived from all the available world-wide surveys , 1989 .

[265]  V. Baranov,et al.  Model of the solar wind interaction with the local interstellar medium: Numerical solution of self‐consistent problem , 1993 .

[266]  E. Marsch,et al.  Wave heating and acceleration of solar wind ions by cyclotron resonance , 1982 .

[267]  A. Cummings,et al.  Anomalous Cosmic Rays and Solar Modulation , 1998 .

[268]  R. Schlickeiser,et al.  Revised Landau damping rates of magnetohydrodynamic waves in hot magnetized equilibrium plasmas and its consequences for cosmic ray transport in the interplanetary medium , 1997 .

[269]  J. Jokipii,et al.  Modeling of 3-D Corotating Cosmic-Ray Structures in the Heliosphere , 1998 .

[270]  J. Geiss,et al.  Acceleration of interstellar pickup ions in the disturbed solar wind observed on Ulysses , 1994 .

[271]  E. Möbius,et al.  Decreases in the antisunward flux of interstellar pickup He+ associated with radial interplanetary magnetic field , 1998 .

[272]  J. Jokipii,et al.  Three-dimensional cosmic-ray simulations: Heliographic latitude and current-sheet tilt , 1995 .

[273]  T. G. Cowling,et al.  The mathematical theory of non-uniform gases , 1939 .

[274]  P. Gazis,et al.  Interstellar pickup hydrogen observations at large heliocentric distances , 1998 .

[275]  D. Rucinski,et al.  Modelling of the interstellar hydrogen distribution in the heliosphere , 1996 .

[276]  M. Gruntman.  Anisotropy of the energetic neutral atom flux in the heliosphere , 1992 .

[277]  Reuven Ramaty,et al.  An interpretation of the observed oxygen and nitrogen enhancements in low energy cosmic rays. , 1973 .

[278]  H. Fichtner,et al.  Global merged interaction regions, the heliospheric termination shock, and time-dependent cosmic ray modulation , 1999 .

[279]  R. Ratkiewicz.  Constraints in modelling the heliospheric interface , 1993 .

[280]  H. Fichtner,et al.  A self‐consistent determination of the heliospheric termination shock structure in the presence of pickup, anomalous, and galactic cosmic ray protons , 1997 .

[281]  R. A. Mewaldt,et al.  Evidence for Multiply Charged Anomalous Cosmic Rays , 1996 .

[282]  K. Rönnmark.  Computation of the dielectric tensor of a Maxwellian plasma , 1983 .

[283]  S. Suess,et al.  Flow downstream of the heliospheric terminal shock - The magnetic field on the heliopause , 1993 .

[284]  V. Baranov,et al.  On the distribution function of H Atoms in the problem of the solar wind interaction with the local interstellar medium , 1998 .

[285]  H. Rosenbauer,et al.  Long-term variations of the flow direction and angular momentum of the solar wind observed by Helios , 2001 .

[286]  M. Potgieter,et al.  The Long-Term Heliospheric Modulation of Galactic Cosmic Rays according to a Time-dependent Drift Model with Merged Interaction Regions , 1994 .

[287]  R. B. Mckibben.  Three-dimensional Solar Modulation of Cosmic Ray and Anomalous Components in the Inner Heliosphere , 1998 .

[288]  D. Eichler,et al.  Cosmic ray drift, shock wave acceleration and the anomalous component of cosmic rays , 1981 .

[289]  K. Rice,et al.  ACCELERATION AND TRANSPORT OF ENERGETIC PARTICLES OBSERVED IN THE HELIOSPHERE , 2000 .

[290]  Iver H. Cairns,et al.  Interstellar pickup ions and quasi‐perpendicular shocks: Implications for the termination shock and interplanetary shocks , 1996 .

[291]  S. Mori.  Cosmic-ray modulation ground-based observations , 1995 .

[292]  M. Neugebauer,et al.  Interplanetary solar-wind measurements by Mariner II , 1965 .

[293]  J. Giacalone,et al.  The Theory of Anomalous Cosmic Rays , 1998 .