Cosmic ray acceleration at oblique shocks

被引：81

作者：

Bell, A. R. ^{[1
]}

Schure, K. M. ^{[1
]}

Reville, B. ^{[1
]}

机构：

[1] Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2011年 / 418卷 / 02期

基金：

欧洲研究理事会;

关键词：

acceleration of particles; shock waves; cosmic rays; ISM: supernova remnants; SUPERNOVA REMNANT; PARTICLE-ACCELERATION; SYNCHROTRON SPECTRUM; MAGNETIC-FIELDS; RADIO REMNANT; FLUX-DENSITY; SN; 1987A; EMISSION; AMPLIFICATION; TRANSPORT;

D O I：

10.1111/j.1365-2966.2011.19571.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We show that the diffusion approximation breaks down for particle acceleration at oblique shocks with velocities typical of young supernova remnants. Higher order anisotropies flatten the spectral index at quasi-parallel shocks and steepen the spectral index at quasi-perpendicular shocks. We compare the theory with observed spectral indices.

引用

收藏

页码：1208 / 1216

页数：9

相关论文

共 62 条

[11] PARTICLE ACCELERATION BY ASTROPHYSICAL SHOCKS [J].

BLANDFORD, RD ;

OSTRIKER, JP .

ASTROPHYSICAL JOURNAL, 1978, 221 (01) :L29-L32

[12]

Bocchino F., 2011, ASTRON ASTROPHYS, V539, P129

[13] A Chandra ACIS view of the thermal composite supernova remnant 3C 391 [J].

Chen, Y ;

Su, Y ;

Slane, PO ;

Wang, QD .

ASTROPHYSICAL JOURNAL, 2004, 616 (02) :885-894

[14] Synchrotron self-absorption in radio supernovae [J].

Chevalier, RA .

ASTROPHYSICAL JOURNAL, 1998, 499 (02) :810-819

[15] Circumstellar emission from Type Ib and Ic supernovae [J].

Chevalier, Roger A. ;

Fransson, Claes .

ASTROPHYSICAL JOURNAL, 2006, 651 (01) :381-391

[16]

Chiotellis A., 2011, ARXIV11035487

[17] A radio supernova remnant associated with the young pulsar J1119-6127 [J].

Crawford, F ;

Gaensler, BM ;

Kaspi, VM ;

Manchester, RN ;

Camilo, F ;

Lyne, AG ;

Pivovaroff, MJ .

ASTROPHYSICAL JOURNAL, 2001, 554 (01) :152-160

[18] HYDROMAGNETIC SHOCK STRUCTURE IN THE PRESENCE OF COSMIC-RAYS [J].

DRURY, LO ;

VOLK, HJ .

ASTROPHYSICAL JOURNAL, 1981, 248 (01) :344-351

[19] AN INTRODUCTION TO THE THEORY OF DIFFUSIVE SHOCK ACCELERATION OF ENERGETIC PARTICLES IN TENUOUS PLASMAS [J].

DRURY, LOC .

REPORTS ON PROGRESS IN PHYSICS, 1983, 46 (08) :973-1027

[20] ELECTRON ACCELERATION IN A NONLINEAR SHOCK MODEL WITH APPLICATIONS TO SUPERNOVA-REMNANTS [J].

ELLISON, DC ;

REYNOLDS, SP .

ASTROPHYSICAL JOURNAL, 1991, 382 (01) :242-254

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