Thermal particle injection in nonlinear diffusive shock acceleration

被引：0
|
作者：
Ellison, Donald C. [1 ]
Blasi, Pasquale [1 ]
Gabici, Stefano [1 ]
机构：
[1] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA
来源：
Proceedings of the 29th International Cosmic Ray Conference, Vol 3: OG1 | 2005年
关键词：
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Particle acceleration in collisionless astrophysical shocks, i.e., diffusive shock acceleration (DSA), is the most likely mechanism for producing cosmic rays, at least below 10(15) eV. Despite the success of this theory, several key elements, including the injection of thermal particles, remains poorly understood. We investigate injection in strongly nonlinear shocks by comparing a semi-analytic model of DSA with a Monte Carlo model. These two models treat injection quite differently and we show, for a particular set of parameters, how these differences influence the overall acceleration efficiency and the shape of the broad-band distribution function.
引用
收藏
页码：261 / 264
页数：4
相关论文
共 50 条
  • [21] Beyond the Test-Particle Power Law: Particle Spectra in Diffusive Shock Acceleration
    Ellison, Donald C.
    [J]. CENTENARY SYMPOSIUM 2012: DISCOVERY OF COSMIC RAYS, 2013, 1516 : 195 - 200
  • [22] The Issue with Diffusive Shock Acceleration
    Caprioli, Damiano
    Haggerty, Colby
    [J]. 36TH INTERNATIONAL COSMIC RAY CONFERENCE, ICRC2019, 2021,
  • [23] DIFFUSIVE SHOCK ACCELERATION AND RECONNECTION ACCELERATION PROCESSES
    Zank, G. P.
    Hunana, P.
    Mostafavi, P.
    Le Roux, J. A.
    Li, Gang
    Webb, G. M.
    Khabarova, O.
    Cummings, A.
    Stone, E.
    Decker, R.
    [J]. ASTROPHYSICAL JOURNAL, 2015, 814 (02):
  • [24] DIFFUSIVE SHOCK ACCELERATION AT COSMOLOGICAL SHOCK WAVES
    Kang, Hyesung
    Ryu, Dongsu
    [J]. ASTROPHYSICAL JOURNAL, 2013, 764 (01):
  • [25] INJECTION TO RAPID DIFFUSIVE SHOCK ACCELERATION AT PERPENDICULAR SHOCKS IN PARTIALLY IONIZED PLASMAS
    Ohira, Yutaka
    [J]. ASTROPHYSICAL JOURNAL, 2016, 827 (01):
  • [26] MOMENTUM-DEPENDENT DIFFUSIVE PARTICLE-ACCELERATION IN MODIFIED SHOCK FRONTS
    WEBB, GM
    BOGDAN, TJ
    LEE, MA
    LERCHE, I
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1985, 215 (02) : 341 - 352
  • [27] PARTICLE ENERGIZATION DURING SOLAR MAXIMUM: DIFFUSIVE SHOCK ACCELERATION AT MULTIPLE SHOCKS
    Parker, L. Neergaard
    Zank, G. P.
    [J]. ASTROPHYSICAL JOURNAL, 2014, 790 (02):
  • [28] EFFECTS OF WAVE-PARTICLE INTERACTIONS ON DIFFUSIVE SHOCK ACCELERATION AT SUPERNOVA REMNANTS
    Kang, Hyesung
    [J]. JOURNAL OF THE KOREAN ASTRONOMICAL SOCIETY, 2013, 46 (01) : 49 - 63
  • [29] A GENERALIZED MODEL OF NONLINEAR DIFFUSIVE SHOCK ACCELERATION COUPLED TO AN EVOLVING SUPERNOVA REMNANT
    Lee, Shiu-Hang
    Ellison, Donald C.
    Nagataki, Shigehiro
    [J]. ASTROPHYSICAL JOURNAL, 2012, 750 (02):
  • [30] THE ROLE OF DRIFTS IN DIFFUSIVE SHOCK ACCELERATION
    DECKER, RB
    [J]. ASTROPHYSICAL JOURNAL, 1988, 324 (01): : 566 - 573
12345