An infrared background-TeV gamma-ray crisis?

被引：191

作者：

Protheroe, RJ ^{[1
]}

Meyer, H

机构：

[1] Univ Adelaide, Dept Phys & Math Phys, Adelaide, SA 5005, Australia

[2] Univ Wuppertal, Fachbereich Phys, D-42097 Wuppertal, Germany

来源：

PHYSICS LETTERS B | 2000年 / 493卷 / 1-2期

基金：

澳大利亚研究理事会;

关键词：

D O I：

10.1016/S0370-2693(00)01113-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider the implications of the recent determination of the universal infrared background fur the propagation of photons up to 20 TeV from the active galaxy Markarian 501 as observed by HEGRA. At 20 TeV the mean free path for photon-Photon collisions on the infrared background would be much shorter than the distance to Markarian 501, implying absorption factors of the order of exp(- 10), or greater, and consequently an excessive power output fur this active galaxy. Possible solutions of this problem are discussed. (C) 2000 Published by Elsevier Science B.V.

引用

页码：1 / 6

页数：6

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