论文标题
从GRB 221009a中解密〜18 TEV光子
Deciphering the ~18 TeV photons from GRB 221009A
论文作者
论文摘要
2022年10月9日，几种乐器检测到了极其强大的伽马射线爆发，GRB 221009a。尽管受到银河系的阻碍，但其余辉爆发胜过以前看到的所有其他GRB。 Lhaaso检测到数千个非常高的能量光子，最多延伸至18 TEV。由于宇宙的不透明度，这种能量光子的检测是出乎意料的。在余辉时期，来自源的固有的非常高的能量光通量可能会增加歧管，这可以通过成对产生的衰减与外层次背景光补偿衰减。我们提出了这样的方案，并表明可以在地球上观察到非常高的能量光子，从非常高的能量质子与GRB射流外部正向休克区域中的种子同步子光子的相互作用。
On 9 October, 2022, an extremely powerful gamma-ray burst, GRB 221009A, was detected by several instruments. Despite being obstructed by the Milky Way galaxy, its afterglow outburst outshone all other GRBs seen before. LHAASO detected several thousands very high energy photons extending up to 18 TeV. Detection of such energetic photons are unexpected due to the large opacity of the Universe. It is possible that in the afterglow epoch the intrinsic very high energy photon flux from the source might have increased manifolds, which could compensate the attenuation by pair-production with the extragalactic background light. We propose such a scenario and show that very high energy photons can be observed on the Earth from the interaction of very high energy protons with the seed synchrotron photons in the external forward shock region of the GRB jet.
