On particle acceleration around shocks. III. Shock waves moving at arbitrary speed. The case of large-scale magnetic field and anisotropic scattering

被引:8
作者
Morlino, G. [1 ]
Blasi, P.
Vietri, M.
机构
[1] Univ Pisa, Dipartimento Fis, I-56100 Pisa, Italy
[2] Osserv Astrofis Arcetri, INAF, I-50125 Florence, Italy
[3] Scuola Normale Super Pisa, Pisa, Italy
关键词
cosmic rays; shock waves;
D O I
10.1086/512026
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
A mathematical approach to investigate particle acceleration at shock waves moving at arbitrary speed in a medium with arbitrary scattering properties was first discussed in work by Vietri and Blasi. We use this method and somewhat extend it in order to include the effect of a large-scale magnetic field in the upstream plasma, with arbitrary orientation with respect to the direction of motion of the shock. We also use this approach to investigate the effects of anisotropic scattering on spectra and anisotropies of the distribution function of the accelerated particles.
引用
收藏
页码:1069 / 1080
页数:12
相关论文
共 16 条
[1]   Particle acceleration by ultrarelativistic shocks: theory and simulations [J].
Achterberg, A ;
Gallant, YA ;
Kirk, JG ;
Guthmann, AW .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2001, 328 (02) :393-408
[2]   Energy spectra of cosmic rays accelerated at ultrarelativistic shock waves [J].
Bednarz, J ;
Ostrowski, M .
PHYSICAL REVIEW LETTERS, 1998, 80 (18) :3911-3914
[3]   ACCELERATION OF COSMIC-RAYS IN SHOCK FRONTS .1. [J].
BELL, AR .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1978, 182 (01) :147-156
[4]   On particle acceleration around shocks. II. A fully general method for arbitrary shock velocities and scattering media [J].
Blasi, P ;
Vietri, M .
ASTROPHYSICAL JOURNAL, 2005, 626 (02) :877-886
[5]   Half-range expansions for an astrophysical problem [J].
Freiling, G ;
Vietri, M ;
Yurko, V .
LETTERS IN MATHEMATICAL PHYSICS, 2003, 64 (01) :65-73
[6]   Ultra-high-energy cosmic ray acceleration by relativistic blast waves [J].
Gallant, YA ;
Achterberg, A .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1999, 305 (01) :L6-L10
[7]  
Gallant YA, 2002, LECT NOTES PHYS, V589, P24
[8]   Particle acceleration and relativistic shocks [J].
Kirk, JG ;
Duffy, P .
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 1999, 25 (08) :R163-R194
[9]   Particle acceleration at ultrarelativistic shocks: An eigenfunction method [J].
Kirk, JG ;
Guthmann, AW ;
Gallant, YA ;
Achterberg, A .
ASTROPHYSICAL JOURNAL, 2000, 542 (01) :235-242
[10]   ON THE ACCELERATION OF CHARGED-PARTICLES AT RELATIVISTIC SHOCK FRONTS [J].
KIRK, JG ;
SCHNEIDER, P .
ASTROPHYSICAL JOURNAL, 1987, 315 (02) :425-433