Murase 2007 伽玛暴对红外背景光子的散射效应

主要内容:
类似于SZ效应，伽玛暴的高能正负电子对散射红外背景光子，产生高能辐射，可能会有观测效应。

精彩摘抄:


文章信息:
Effects of Cosmic Infrared Background on High Energy Delayed Gamma-Rays from Gamma-Ray Bursts

Authors: Kohta Murase, Katsuaki Asano, Shigehiro Nagataki

(Submitted on 29 Mar 2007)

Abstract: Regenerated high energy emissions from gamma-ray bursts (GRBs) are studied in detail. If the primary emission spectrum extends to TeV range, these very high energy photons will be absorbed by the cosmic infrared background (CIB). The created high energy electron-positron pairs up-scatter not only cosmic microwave background (CMB) photons but also CIB photons, and secondary photons are generated in the GeV-TeV range. These secondary delayed photons may be observed in the near future, and useful for a consistency check for the primary spectra and GRB physical parameters. The up-scattered CIB photons cannot be neglected for low redshift bursts and/or GRBs with a relatively low maximum photon energy. The secondary gamma-rays also give us additional information on the CIB, which is uncertain in observations so far.

Comments:

10 pages, 14 figures, submitted to ApJ

Subjects:

Astrophysics (astro-ph)

Cite as:

arXiv:astro-ph/0703759v1