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arXiv 1708.01088astro-ph.HE
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GRB与H.E.S.S.的观测II

GRB Observations with H.E.S.S. II

C. Hoischen, A. Blazer, E. Bissaldi, M. Füßling, T. Garrigoux, D. Gottschall, M. Holler, A. Mitchell, P. O'Brien, R. Parsons, G. Pühlhofer, G. Rowell, F. Schüss… 展开作者

C. Hoischen, A. Blazer, E. Bissaldi, M. Füßling, T. Garrigoux, D. Gottschall, M. Holler, A. Mitchell, P. O'Brien, R. Parsons, G. Pühlhofer, G. Rowell, F. Schüssler, P. H. T. Tam, S. Wagner

摘要:

高能立体系统(H.E.S.S.)多年来一直在寻找伽马射线暴(GRB)的对应物。2012年,该系统升级为第五架$28$ m直径望远镜(CT 5),该望远镜配备了更快的马达,可快速重调,标志着H.E.S.S.第二阶段的开始。操作(H.E.S.S. II)。CT 5的$600\,{\rm m}^{2}$的大集光面积提高了对低能伽马射线的灵敏度,甚至将能量范围扩展到$100$ GeV以下。目前,在数十GeV到数十TeV的能量范围内继续寻找对应物。在这个能量范围内的探测将为这些高能爆炸的光谱部分打开一个新的窗口,费米-LAT只在一个减少的事件子集中成功探测到这些高能爆炸,统计数据相当有限。在过去的几年里,H.E.S.S.根据Swift-BAT和Fermi-GBM/-LAT探测到的伽玛暴进行了后续观测。这个机会目标观测计划是用一个通用的机会目标警报系统进行的。这一贡献将突出机会目标警报系统的主要特点,提供伽马射线暴的后续统计数据以及有希望的后续观测的详细结果。

英文摘要:

The High Energy Stereoscopic System (H.E.S.S.) has been searching for counterparts of Gamma Ray Bursts (GRBs) for many years. In 2012 the system was upgraded with a fifth $28$ m diameter telescope (CT5) which is equipped with faster motors for rapid repointing, marking the start of the second phase of H.E.S.S. operation (H.E.S.S. II). CT5s large light collection area of $600\,{\rm m}^{2}$ improves the sensitivity to low-energy gamma-rays and even extends the energy range below $100$ GeV. The search for counterparts continues now in the energy range of tens of GeV to tens of TeV. A detection in this energy range would open a new window to the part of the spectrum of these highly energetic explosions which Fermi-LAT has only successfully detected in a reduced subset of events, with rather limited statistics. In the past years, H.E.S.S. has performed followup observations based on GRB detections by Swift-BAT and Fermi-GBM/-LAT. This Target of Opportunity observation program was carried out with a generalised Target of Opportunity Alert system. This contribution will highlight key features of the Target of Opportunity Alert system, present follow-up statistics of GRBs as well as detailed results of promising follow-up observations.

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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