COSMOCR: A numerical code for cosmic ray studies in computational cosmology

被引:58
作者
Miniati, F
机构
[1] Max Planck Inst Astrophys, D-85741 Garching, Germany
[2] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA
基金
美国国家航空航天局; 美国国家科学基金会;
关键词
D O I
10.1016/S0010-4655(01)00293-4
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
We present COSMOCR, a numerical code for the investigation of cosmic ray related studies in computational cosmology. The code follows the diffusive shock acceleration, the mechanical and radiative energy losses and the spatial transport of the suprathermal particles in cosmic environment. Primary cosmic ray electrons and ions are injected at shocks according to the thermal leakage prescription. Secondary electrons are continuously injected as a results of p-p inelastic collisions of primary cosmic ray ions and thermal background nuclei. The code consists of a conservative, finite volume method with a power-law sub-grid model in momentum space. Two slightly different schemes are implemented depending on the stiffness of the cooling terms. Comparisons of numerical results with analytical solution for a number of tests of direct interest show remarkable performance of the present code. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:17 / 38
页数:22
相关论文
共 69 条
[1]  
ACHTERBERG JKA, 2000, ASTROPHYS J, V542, P235
[2]   Cosmology - The cosmic triangle: Revealing the state of the universe [J].
Bahcall, NA ;
Ostriker, JP ;
Perlmutter, S ;
Steinhardt, PJ .
SCIENCE, 1999, 284 (5419) :1481-1488
[3]   MEASUREMENT OF MEMENTUM SPECTRUM OF POSITRONS FROM MUON DECAY [J].
BARDON, M ;
NORTON, P ;
PEOPLES, J ;
SACHS, AM .
PHYSICAL REVIEW LETTERS, 1965, 14 (12) :449-&
[4]   EFFICIENCY OF CR ACCELERATION IN SUPERNOVA-REMNANTS [J].
BEREZHKO, E ;
KSENOFONTOV, L ;
YELSHIN, V .
NUCLEAR PHYSICS B, 1995, :171-181
[5]   Numerical investigation of cosmic ray acceleration in supernova remnants [J].
Berezhko, E. G. ;
Yelshin, V. K. ;
Ksenofontov, L. T. .
ASTROPARTICLE PHYSICS, 1994, 2 (02) :215-227
[6]  
Berezhko E. G., 1996, Astronomy Reports, V40, P155
[7]   A simple model of nonlinear diffusive shock acceleration [J].
Berezhko, EG ;
Ellison, DC .
ASTROPHYSICAL JOURNAL, 1999, 526 (01) :385-399
[8]  
BEREZINSKII VS, 1991, ASTROPHYSICS COSMIC
[9]   Clusters of galaxies as storage room for cosmic rays [J].
Berezinsky, VS ;
Blasi, P ;
Ptuskin, VS .
ASTROPHYSICAL JOURNAL, 1997, 487 (02) :529-535
[10]   Extreme Ultraviolet Explorer observations of clusters of galaxies:: Virgo and M87 [J].
Berghöfer, TW ;
Bowyer, S ;
Korpela, E .
ASTROPHYSICAL JOURNAL, 2000, 535 (02) :615-620