来自一个罕见且遥远的γ射线暴的异常明亮光学辐射
高能天体物理现象
2023-05-15 v2
摘要
长时标射线暴（GRB）由大质量恒星坍缩后新生黑洞发出的超相对论性喷流耗散所产生。在明亮且高度变化的射线辐射之后，喷流在暴周介质中的外部耗散释放出多波段余辉。我们报道了在红移1.937处的极亮且高能量的GRB 210619B爆发约 s后，发现了一处非常明亮（星等）的光学辐射。早期多滤光片观测使我们得以见证冲击波在GRB抛射物中传播的终结。我们观测到了从明亮的反向激波到正向激波辐射的谱转变，表明GRB早期与晚期多波段辐射源自一个在异常稀薄的星际介质中传播的极窄喷流。我们还发现了来自喷流翼的附加辐射成分的证据，该成分能够解释光学/X射线非相关辐射。
引用
@article{arxiv.2109.00010,
title = {Exceptionally bright optical emission from a rare and distant $\gamma-$ray burst},
author = {Gor Oganesyan and Sergey Karpov and Martin Jelínek and Gregory Beskin and Samuele Ronchini and Biswajit Banerjee and Marica Branchesi and Jan Štrobl and Cyril Polášek and René Hudec and Eugeny Ivanov and Elena Katkova and Alexey Perkov and Anton Biryukov and Nadezhda Lyapshina and Vyacheslav Sasyuk and Martin Mašek and Petr Janeček and Jan Ebr and Jakub Juryšek and Ronan Cunniffe and Michael Prouza},
journal= {arXiv preprint arXiv:2109.00010},
year = {2023}
}