Resmi 2008 电子能谱分布p小于2的情况

主要内容:
认为电子也是分段的幂律谱，有p1和p2, p1小于2,但p2肯定大于2的。（即使同步辐射不也可以修正单一幂律到两段幂律吗，p和p+1. 不过可能这里是原始分部就是两段，加上同步修正就可能变成三段了。）

精彩摘抄:


文章信息:

arXiv:0804.1378 [ps, pdf, other]

Title: Hard Electron Energy Distribution in the Relativistic Shocks of GRB Afterglows

Authors: L. Resmi, D. Bhattacharya

Comments: 17 pages, 6 figures. Accepted for publication in MNRAS

Subjects: Astrophysics (astro-ph)

Particle acceleration in relativistic shocks is not a very well understood subject. Owing to that difficulty, radiation spectra from relativistic shocks, such as those in GRB afterglows, have been often modelled by making assumptions about the underlying electron distribution. One such assumption is a relatively soft distribution of the particle energy, which need not be true always, as is obvious from observations of several GRB afterglows. In this paper, we describe modifications to the afterglow standard model to accommodate energy spectra which are `hard'. We calculate the overall evolution of the synchrotron and compton flux arising from such a distribution. We also model two afterglows, GRB010222 and GRB020813, under this assumption and estimate the physical parameters.