Gamma-rays from pulsar wind nebulae in starburst galaxies

被引：15
作者：
Mannheim, Karl [1 ]
Elsaesser, Dominik [1 ]
Tibolla, Omar [1 ]
机构：
[1] Univ Wurzburg, Inst Theoret Phys & Astrophys, D-97084 Wurzburg, Germany
来源：
ASTROPARTICLE PHYSICS | 2012年 / 35卷 / 12期
关键词：
Gamma rays; Pulsar wind nebulae; Starburst galaxies; NGC; 253; EMISSION; RADIO; EVOLUTION; M82; DISCOVERY;
D O I：
10.1016/j.astropartphys.2012.02.009
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Recently, gamma-ray emission at TeV energies has been detected from the starburst galaxies NGC253 (Acero et al., 2009) [1] and M82 (Acciari et al., 2009)[2]. It has been claimed that pion production due to cosmic rays accelerated in supernova remnants interacting with the interstellar gas is responsible for the observed gamma rays. Here, we show that the gamma-ray pulsar wind nebulae left behind by the supernovae contribute to the TeV luminosity in a major way. A single pulsar wind nebula produces about ten times the total luminosity of the Sun at energies above 1 TeV during a lifetime of 10(5) years. A large number of 3 x 10(4) pulsar wind nebulae expected in a typical starburst galaxy at a distance of 4 Mpc can readily produce the observed TeV gamma rays. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：797 / 800
页数：4
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