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arXiv 1101.4669astro-ph.HEastro-ph.COgr-qc
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高能中微子与伽马射线暴的引力波瞬变的时间延迟界限

Bounding the Time Delay between High-energy Neutrinos and Gravitational-wave Transients from Gamma-ray Bursts

Bruny Baret, Imre Bartos, Boutayeb Bouhou, Alessandra Corsi, Irene Di Palma, Corinne Donzaud, Véronique Van Elewyck, Chad Finley, Gareth Jones, Antoine Kouchner… 展开作者

Bruny Baret, Imre Bartos, Boutayeb Bouhou, Alessandra Corsi, Irene Di Palma, Corinne Donzaud, Véronique Van Elewyck, Chad Finley, Gareth Jones, Antoine Kouchner, Szabolcs Màrka, Zsuzsa Màrka, Luciano Moscoso, Eric Chassande-Mottin, Maria Alessandra Papa, Thierry Pradier, Peter Raffai, Jameson Rollins, Patrick Sutton

摘要:

我们推导出一个保守的符合时间窗口,用于联合搜索由伽马射线暴(GRB)发射的引力波(GW)瞬变和高能中微子(HENs,能量高于100 GeV)。最后一个是最有趣的天体物理学来源,与当前和不久的将来的探测器同步探测。我们考虑了广泛的排放机制。我们取BATSE观测到的伽玛暴T90的95%分位数作为伽玛暴持续时间的上限,得到伽玛暴持续时间的上限约为150 s。利用Fermi LAT探测到的8个伽玛暴的高能(> 100 MeV)光子光变曲线,我们证实了大多数高能光子预计在伽玛暴的前150 s内被观测到。考虑到中央发动机产生的相对论性喷流的爆发时间,我们允许GW和HEN发射在可观测的伽马光子产生开始前100 s开始。利用已发表的前兆时间差,我们计算了前兆活动的时间上限,得出95%的前兆发生在GRB爆发前约250 s内。考虑到上述不同的过程,我们得到tHEN - tGW ~ [-500s,+500s]的时间窗口。考虑到上述过程,还可以确定GW和/或HEN信号与检测到的GRB一致的预期时间窗口的上限,tGW-tGRB ~ tHEN - tGRB ~ [-350s,+150s]。

英文摘要:

We derive a conservative coincidence time window for joint searches of gravita-tional-wave (GW) transients and high-energy neutrinos (HENs, with energies above 100GeV), emitted by gamma-ray bursts (GRBs). The last are among the most interesting astrophysical sources for coincident detections with current and near-future detectors. We take into account a broad range of emission mechanisms. We take the upper limit of GRB durations as the 95% quantile of the T90's of GRBs observed by BATSE, obtaining a GRB duration upper limit of ~150s. Using published results on high-energy (>100MeV) photon light curves for 8 GRBs detected by Fermi LAT, we verify that most high-energy photons are expected to be observed within the first ~150s of the GRB. Taking into account the breakout-time of the relativistic jet produced by the central engine, we allow GW and HEN emission to begin up to 100s before the onset of observable gamma photon production. Using published precursor time differences, we calculate a time upper bound for precursor activity, obtaining that 95% of precursors occur within ~250s prior to the onset of the GRB. Taking the above different processes into account, we arrive at a time window of tHEN - tGW ~ [-500s,+500s]. Considering the above processes, an upper bound can also be determined for the expected time window of GW and/or HEN signals coincident with a detected GRB, tGW - tGRB ~ tHEN - tGRB ~ [-350s,+150s].

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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