主要内容:
从伽玛暴源出来的伽玛光子与ISM作用，发生康普顿和拉曼散射，产生射电辐射。
精彩摘抄:
文章信息:
astro-ph/0702098 [abs, ps, pdf, other] : Title: On the Detectability of Prompt Coherent GRB Radio Emission
Authors: J.-P. Macquart
Comments: ApJ Lett accepted
Both induced Compton scattering and induced Raman scattering strongly limit the observability of the extremely bright (<<> 10^3 (D/100 Mpc), or if the intrinsic opening angle of the emission is extremely small. Thus the presence or absence of such radio emission provides an excellent constraint on the Lorentz factor of the GRB outflow during the very early stages of its outburst. Induced Raman scattering imposes an even more stringent limit independent of the emission opening angle, but only effective if GRB emission must propagate through a dense progenitor wind within ~ 10^{15} cm from the blast center.
没有评论:
发表评论