Galactic Gamma-Ray Halo of the Nearby Starburst Galaxy NGC 253
Galactic Gamma-Ray Halo of the Nearby Starburst Galaxy NGC 253
复制标题
附近星爆星系 NGC 253 的银河伽马射线晕
DOI：
10.1086/368405
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
T. Tsuru
中科院分区：
文献类型：
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作者：
C. Itoh;R. Enomoto;S. Yanagita;T. Yoshida;T. Tsuru
最近，CANGAROO-II望远镜探测到来自附近边缘星暴星系ngc253的漫射TeV伽马射线发射。本报告对其排放机理进行了讨论。我们回顾了来自ngc253的无线电到tev伽马射线的发射，并提出了一个由同步辐射和逆康普顿散射引起的非热发射模型。一个光晕模型成功地解释了ngc253的多波段光谱。
Recently, the CANGAROO-II telescope detected diffuse TeV gamma-ray emission from a nearby edge-on starburst galaxy, NGC 253. The emission mechanism is discussed in this report. We review the emissions of radio-to-TeV gamma rays from NGC 253 and present a model of the nonthermal emissions due to synchrotron radiations and inverse Compton scatterings. A halo model successfully explains the multiband spectrum of NGC 253.