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arXiv 2108.10028astro-ph.HE
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用H.E.S.S.搜寻银河系低纬度费米泡的TeV辐射内星系巡天观测

Search for TeV emission from the Fermi Bubbles at low Galactic latitudes with H.E.S.S. inner Galaxy survey observations

E. Moulin, A. Montanari, D. Malyshev, Dm. Malyshev

摘要:

费米泡是大约十年前在{ \it Fermi}-LAT数据中发现的,是一种延伸到55度的双瓣结构。在银河系的纬度上和银河系的中心之下。目前,它们的起源仍然未知。H.E.S.S.该合作目前正在进行有史以来第一次对银河系内部区域TeV伽马射线的调查:内部星系调查。这次巡天的目的是对银河系中心周围几度范围内的微弱和漫射辐射达到最佳的灵敏度。它对暗物质信号、新的漫发射和银河系中心的TeV外流提供了前所未有的灵敏度。了解银河系低纬度地区费米泡的性质将为了解其起源提供关键的见解。我们使用低纬度的空间模板在费米泡的基础上寻找TeV发射。2014-2020年H.E.S.S.将报告观察结果。

英文摘要:

The Fermi Bubbles were discovered about a decade ago in the {\it Fermi}-LAT data as a double-lobe structure extending up to 55 deg. in Galactic latitudes above and below the Galactic Center. At the moment their origin is still unknown. The H.E.S.S. collaboration is currently performing the first ever survey in TeV gamma rays of the Milky Way inner region: the Inner Galaxy Survey. This survey is intended to achieve the best sensitivity to faint and diffuse emissions in a region of several degrees around the Galactic Centre. It provides an unprecedented sensitivity to dark matter signals, new diffuse emissions, and TeV outflows from the Galactic Centre. Understanding the properties of the Fermi Bubbles at low Galactic latitudes will provide key insights into their origin. We search for TeV emission at the base of the Fermi Bubbles using low-latitude spatial templates. The first results obtained with the 2014-2020 H.E.S.S. observations will be reported.

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