Cosmic-ray acceleration and the radio evolution of Cassiopeia A
Cosmic-ray acceleration and the radio evolution of Cassiopeia A
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宇宙射线加速和仙后座 A 的射电演化
DOI：
10.1086/154514
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发表时间：
1976
期刊：
影响因子：
--
通讯作者：
J. Scott
中科院分区：
文献类型：
--
作者：
R. Chevalier;J. Robertson;J. Scott
对Scott和Chevalier在超新星残骸中产生星系宇宙射线的模型进行了更详细的分析。粒子被二阶费米加速度加速，湍流漩涡（由超新星喷出物穿过残骸的运动产生）作为移动的散射中心。对粒子能量空间中随时间变化的连续性方程进行了数值求解。计算结果与Cas a射电发射的所有随时间变化的观测结果基本一致。这一机制意味着一个随时间变化的解产生了与星系宇宙射线具有相同斜率的宇宙射线谱。我们的计算结果和关于…的新工作…Stecker、Lingenfelter和Higdon等人的宇宙射线和Hainebach、Norman和Schramm等人的宇宙射线组成支持了我们的假设，即星系宇宙射线是通过Scott和Chevalier提出的机制在超新星残骸中产生的。(AIP)
A more detailed analysis of the Scott and Chevalier model for production of galactic cosmic rays in supernova remnants is presented. Particles are accelerated by second-order Fermi acceleration with turbulent vortices (produced by the motions of the supernova ejecta through the remnant) acting as moving scattering centers. The time-dependent equation of continuity in particle energy space is solved numerically. The results of the calculations are in substantial agreement with all time-dependent observations of the radio emission from Cas A. This mechanism implies an dependent solution yields a cosmic ray spectrum with the same slope as galactic cosmic rays. The results of our calculations and new work on ..gamma..-rays by, e.g., Stecker and by Lingenfelter and Higdon and cosmic ray composition by, e.g., Hainebach, Norman, and Schramm support our hypothesis that galactic cosmic rays are produced in supernova remnants by the mechanism proposed by Scott and Chevalier. (AIP)