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arXiv 0907.3958astro-ph.HE
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J0632 +057的VERITAS观测值

VERITAS observations of HESS J0632+057

G. Maier

摘要:

HESS J0632+057是仅有的两个未经确认的高能伽马射线源之一,它们在自然界中看起来是点状的。它可能与大质量恒星MWC 148有关,并被认为类似于已知的TeV双星系统,如LS I +61 303或LS 5039。这些双星是罕见和极端的(只有三个TeV双星已知的日期),其伽马射线发射机制尚未被理解。HESS J0632+057由VERITAS(一个由四个12米成像大气切伦科夫望远镜组成的阵列)在2006年、2008年和2009年观测到。基于这些观测结果,我们提出了HESS J0632+057高能伽马射线发射的可变性证据。

英文摘要:

HESS J0632+057 is one of only two unidentified high energy gamma-ray sources which appear to be point-like in nature. It is possibly associated with the massive star MWC 148 and has been suggested to resemble known TeV binary systems like LS I +61 303 or LS 5039. These binaries are rare and extreme (only three TeV binaries are known to date), and their gamma-ray emission mechanism has not been understood. HESS J0632+057 was observed by VERITAS, an array of four 12 m imaging atmospheric Cherenkov telescopes, in 2006, 2008 and 2009. Based on these observations we present evidence for variability in the high energy gamma-ray emission from HESS J0632+057.

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