论文标题

来自传播相对论喷气的重力波记忆:伽马射线内部爆发祖先的探针

Gravitational-wave memory from a propagating relativistic jet: a probe of the interior of gamma-ray burst progenitors

论文作者

Yu, Yun-Wei

论文摘要

据信,伽马射线爆发的相对论喷射(GRB)最初应通过巨大的祖先恒星的沉重信封或由紧凑型二进制合并形成的合并喷射。射流与恒星包膜或合并弹出的相互作用会导致射流的头部材料的减速,并同时形成热茧。但是,这种喷射式/射流相互作用实际上是与电磁辐射无法检测到的,只能通过突破射流的结构间接推断。因此,作为解决这一现象的解决方案,我们建议喷气式环/喷射互动可以产生重力波(GW)的记忆,振幅为$ h \ sim10^{ - 26} -26} -10} -10^{ - 23} $,可以在未来的GW检测频率范围内检测到来自子孔的未来频率范围,从而可以检测到几个thertz to s seb-hertz to n hersts n herstz shertz。这提供了一种潜在的直接方法来探测射流传播,然后提供了GRB祖细胞的内部。此外,即使射流最终在恒星包膜或合并弹出中锁定,这种方法也可以使用。

It is believed that the relativistic jets of gamma-ray bursts (GRBs) should initially propagate through a heavy envelope of the massive progenitor stars or through a merger ejecta formed from the compact binary mergers. The interaction of a jet with a stellar envelope or a merger ejecta can lead to the deceleration of the head material of the jet and simultaneously the formation of a hot cocoon. However, this jet-envelope/ejecta interaction is actually undetectable with electromagnetic radiation and can only be inferred indirectly by the structure of the breakout jet. Therefore, as a solution to this phenomenon, we suggest that the jet-envelope/ejecta interaction can produce a gravitational-wave (GW) memory of an amplitude of $h\sim10^{-26}-10^{-23}$, which could be detected with some future GW detectors sensitive in the frequency range from sub-Hertz to several tens of Hertz. This provides a potential direct way to probe the jet propagation and then the interior of the GRB progenitors. Moreover, this method is in principle available even if the jet is finally chocked in the stellar envelope or the merger ejecta.

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