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arXiv 2203.07489astro-ph.HEastro-ph.CO
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周期性快速射电暴FRB 180916的硬X射线发射极限。J0158 +65

Limits on the hard X-ray emission from the periodic fast radio burst FRB 180916.J0158+65

Sibasish Laha, Zorawar Wadiasingh, Tyler Parsotan, Amy Lien, George Younes, Bing Zhang, S. Bradley Cenko, Eleonora Troja, Samantha Oates, Matt Nicholl, Eileen M… 展开作者

Sibasish Laha, Zorawar Wadiasingh, Tyler Parsotan, Amy Lien, George Younes, Bing Zhang, S. Bradley Cenko, Eleonora Troja, Samantha Oates, Matt Nicholl, Eileen Meyer, Josefa Becerra González, Ritesh Ghosh, Noel Klingler

摘要:

FRB 180916.J0158+65是最近的、周期性重复的、活跃爆发的快速射电暴(FRB)之一,它被定位在旋涡星系的外围。在这项工作中,我们研究了FRB的硬X射线$14-195$ keV的数据从突发警报望远镜(BAT)上的尼尔Gehrels斯威夫特天文台。BAT使用编码掩模技术,在硬X射线波段提供$\lesssim 3$弧分的定位,以及准确的背景估计。BAT自2020年2月以来一直在调查模式下观察源位置。巡天模式观测涉及扣除背景的光谱,在源位置(从2020年2月到2022年1月)在$300-2000$秒的时间跨度上积分。我们分析了来自BAT的所有$\sim 230$调查模式观测,并检查了任何观测中的任何信号。我们在任何观察中均未检测到$>5σ$置信水平的任何信号。我们可以估计$14-195$ keV通量的$5σ$上限,其范围在$4.5\times 10^{-10} - 7.6\times 10^{-9}\, \rm erg\, cm^{-2}\, s^{-1}$之间。在源距离处,这涉及$5.08\times 10^{44}- 8.5\times 10^{45} \rm erg\, s^{-1}$的亮度的$5σ$上限。有了这个估计,我们可以排除任何持续的X射线发射,在源位置的这些快照的BAT观测。

英文摘要:

FRB 180916.J0158+65 is one of the nearest, periodically repeating, and actively bursting fast radio burst (FRB) which has been localized to the outskirts of a spiral galaxy. In this work we study the FRB with the hard X-ray $14-195$ keV data from the Burst Alert Telescope (BAT) on board The Neil Gehrels Swift Observatory. BAT uses coded mask technology giving a localization of $\lesssim 3$ arc-minute in the hard X-ray band, along with an accurate background estimation. BAT has been observing the source location in survey mode since February 2020. The survey mode observations involves background subtracted spectra, integrated over a time span ranging $300-2000$ seconds, at the source location (from Feb 2020-Jan 2022). We analyzed all the $\sim 230$ survey mode observations from BAT and checked for any signal in any of the observations. We did not detect any signal at $>5σ$ confidence level in any of the observations. We could estimate a $5σ$ upper limit on the $14-195$ keV flux, which ranged between $4.5\times 10^{-10} - 7.6\times 10^{-9}\, \rm erg\, cm^{-2}\, s^{-1}$. At the source distance this relates to a $5σ$ upper limit on luminosity of $5.08\times 10^{44}- 8.5\times 10^{45} \rm erg\, s^{-1}$. With this estimate, we could rule out any persistent X-ray emission, at the source location for these snapshots of BAT observations.

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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