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arXiv 1503.08226astro-ph.HEastro-ph.CO
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第一次gamma-ray检测到窄线塞弗特1 FBQS J1644 +2619

The first gamma-ray detection of the narrow-line Seyfert 1 FBQS J1644+2619

F. D'Ammando, M. Orienti, J. Larsson, M. Giroletti

摘要:

本文报道了费米卫星上的大视场望远镜在窄线塞弗特1(NLSy 1)星系FBQS J1644+2619中发现的伽马射线辐射。第三个费米LAT源目录报告了一个未识别的伽马射线源,在费米操作的前四年中检测到,距离NLSy 1的无线电位置0.23度。分析76个月的伽马射线数据(2008年8月4日至2014年12月31日),我们能够更好地约束伽马射线源的定位。伽马射线源的新位置距离FBQS J1644+2619为0.05度,表明与NLSy 1存在空间关联。这是迄今为止Fermi-LAT检测到的第六个具有高度显著性的NLSy 1。值得注意的是,在2012年7月至10月期间,FBQS J1644+2619的伽马射线活动显着增加,而在同一时期,卡塔利娜实时巡天探测到V波段活动的增加。

英文摘要:

We report the discovery of gamma-ray emission from the narrow-line Seyfert 1 (NLSy1) galaxy FBQS J1644+2619 by the Large Area Telescope on board the Fermi satellite. The Third Fermi LAT Source catalogue reports an unidentified gamma-ray source, detected over the first four years of Fermi operation, 0.23 deg from the radio position of the NLSy1. Analysing 76 months of gamma-ray data (2008 August 4 - 2014 December 31) we are able to better constrain the localization of the gamma-ray source. The new position of the gamma-ray source is 0.05 deg from FBQS J1644+2619, suggesting a spatial association with the NLSy1. This is the sixth NLSy1 detected at high significance by Fermi-LAT so far. Notably, a significant increase of activity was observed in gamma-rays from FBQS J1644+2619 during 2012 July-October, and an increase of activity in V-band was detected by the Catalina Real-Time Sky Survey in the same period.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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