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arXiv 1709.04256astro-ph.HE
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H.E.S.S偶然观测到的超新星gamma-ray发射的上限

Upper limits on gamma-ray emission from Supernovae serendipitously observed with H.E.S.S

R. Simoni, N. Maxted, M. Renaud, J. Vink, L. Tibaldo

摘要:

最近的理论模型表明,年轻的超新星可能能够加速粒子,从而产生非常高能量的伽马射线辐射。我们在高能立体系统(H.E.S.S.)的视野内偶然发现的附近星系中的超新星中寻找伽马射线发射。在超新星爆发的一年内H.E.S.S. 2003年12月至2015年3月期间收集的数据被考虑并与最近的目录进行比较。九个候选超新星被确定和分析。没有发现这些物体的显著发射,伽马射线发射上限为$\sim$ 10 $^{-13}$ cm $^{-2}$ s $^{-1}$,高于1 TeV。

英文摘要:

Recent theoretical models suggest that young supernovae might be able to accelerate particles, which in turn might generate very high energy gamma-ray emission. We search for gamma-ray emission towards supernovae in nearby galaxies which were serendipitously within the field of view of the High Energy Stereoscopic System (H.E.S.S.) within a year of the supernova event. H.E.S.S. data collected between December 2003 and March 2015 were considered and compared to recent catalogs. Nine candidate supernovae were identified and analyzed. No significant emission from these objects has been found. Gamma-ray emission upper limits, which are of the order $\sim$10$^{-13}$ cm$^{-2}$s$^{-1}$ above 1 TeV, are reported.

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