论文标题
GRB 190829a的非常高能量的余辉发射：其强度的证据？
Very High-energy Afterglow Emission of GRB 190829A: Evidence for Its Hadronic Origin?
论文作者
论文摘要
高能量立体镜（H.E.S.S.S.S.S.S.S.）从GRB 190829a的余波阶段（H.E.S.S.S.S.S.S.S.S.S.）望远镜检测到多TEV GAMMA射线是近年来已经在非常高的能量（VHE）Gamma射线中观察到的两个GRB的列表的补充。 Blazars and Grb的喷气机具有许多相似之处，而光有关模型非常成功地解释了来自高能Blazars的VHE伽马射线光谱。最近，摄影模型已成功地用于研究GRB 180720b和GRB 190114c的余辉阶段的子TEV伽马射线。我们再次采用了该模型来解释GRB 190829a连续两个晚上观察到的VHE光谱。我们表明，GRB 190829a的光谱可能是由于高能质子与GRB射流的正向冲击区域中的同步质子自孔子光子的相互作用，类似于高能量弹药的VHE弹性事件的低发射状态。我们推测，如果将来可以观察到来自附近GRB的VHE伽马射线光谱，那么其中一些只能通过使用两个不同的频谱指数来解释其中的一些。如果得到确认，则可以解释高能质子与光子的相互作用，包括从同步加速器背景和正向冲击区域中的同步加速器自compton背景。
The detection of multi-TeV gamma-rays from the afterglow phase of GRB 190829A by High Energy Stereoscopic System (H.E.S.S.) telescope is an addition to the already existing list of two more GRBs observed in the very high energy (VHE) gamma-rays in recent years. Jets of blazars and GRBs have many similarities and the photohadronic model is very successful in explaining the VHE gamma-ray spectra from the high energy blazars. Recently, the photohadronic model has been successfully applied to study the sub-TeV gamma-rays from the afterglow phases of GRB 180720B and GRB 190114C. We employed this model again to explain the VHE spectra observed for the two consecutive nights from GRB 190829A. We show that the spectra of GRB 190829A can be due to the interactions of high energy protons with the synchrotron self-Compton photons in the forward shock region of the GRB jet, similar to the low emission state of the VHE flaring events of high energy blazars. We speculate that, if in future, it is possible to observe the VHE gamma-ray spectra from nearby GRBs in their afterglow phases, then some of them could only be explained by employing two different spectral indices. If confirmed, such VHE spectra could be interpreted as a result of the interactions of the high energy protons with the photons, both from the synchrotron background and the synchrotron self-Compton background in the forward shock region.
