Mechanism of very high-energy radiation in BL Lacertae object 3C 66A

Mechanism of very high-energy radiation in BL Lacertae object 3C 66A
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BL 蜥蜴天体 3C 66A 中极高能辐射的机制

DOI:
10.1051/0004-6361/200913035
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发表时间:
2009-11
影响因子:
6.5
通讯作者:
Wang, Jiancheng
Wang, Jiancheng
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Yang, Jianping;Wang, Jiancheng

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目标。我们的目标是了解耀变体的性质和产生高能的机制。射线,通过调查blazar 3C 66A。方法.我们模拟了最近用Fermi-LAT和VERITAS望远镜观测到的3C 66A的高能光谱。在两台望远镜最近几乎同时观测到的能量范围从0.2 - 100 GeV到200 - 500 GeV的光谱有一个很难的变化。结果去吸收的VERITAS光谱强烈依赖于红移,这是高度不确定的。如果采用z = 0.444,我们可以使用SSC模型来产生Fermi-LAT分量,使用EC模型来产生VERITAS分量。然而,如果z = 0.1,则本征VERITAS光谱将更柔和,并且可以使用SSC模型解释费米LAT和VERITAS光谱之间的平滑链接。
Aims. Our goal is to understand the nature of blazars and the mechanisms for generating high-energy.-rays, through investigation of the blazar 3C 66A. Methods. We model the high-energy spectrum of 3C 66A, which was observed recently with the Fermi-LAT and VERITAS telescopes. The spectrum has a hard change from the energy range of 0.2-100 GeV to 200-500 GeV in recent almost contemporaneous observations of two telescopes. Results. The de-absorbed VERITAS spectrum depends strongly on redshift, which is highly uncertain. If z = 0.444 is adopted, we are able to use the SSC model to produce the Fermi-LAT component and the EC model to the VERITAS component. However, if z = 0.1, the intrinsic VERITAS spectrum will be softer, and there will be a smooth link between the Fermi-LAT and VERITAS spectra that can be explained using an SSC model.
DOI: 10.1086/533521
发表时间: 2008-01
期刊: The Astrophysical Journal
影响因子: --
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