arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1708.01352astro-ph.HE
收藏

GW151226与MAXI的X射线上限

X-ray upper limits of GW151226 with MAXI

Motoko Serino, Nobuyuki Kawai, Hitoshi Negoro, Tatehiro Mihara, Takahiro Masumitsu, Satoshi Nakahira

摘要:

利用全天空X射线图像监视器(MAXI)对引力波事件GW 151226的误差区进行了观测。在GW 151226时操作MAXI,并持续观察至事件发生后4分钟。在GW事件发生后的第一个92分钟轨道期间,MAXI覆盖了GW事件90%误差区域的84%。在GW错误区域未检测到显著的X射线瞬变。扫描的典型3- $σ$ GSC上限为2-20 keV下的1.2 $\times 10^{-9}$尔格cm $^{-2}$ s $^{-1}$。自动检测(MAXI nova-search)系统在GW触发后5257 s至5260 s检测到一个显著性较低(2.85 $σ$)的短时间过量事件。最后,我们讨论了MAXI的敏感性,以长X射线发射的短伽马射线暴,预计伴随GW事件。

英文摘要:

The error region of the the gravitational-wave (GW) event GW151226 was observed with Monitor of All-sky X-ray Image (MAXI). MAXI was operated at the time of GW151226, and continuously observed to 4 minutes after the event. MAXI covered about 84% of the 90 percent error region of the GW event during the first 92 minutes orbit after the event. No significant X-ray transient was detected in the GW error region. A typical 3-$σ$ GSC upper limit for a scan is 1.2 $\times 10^{-9}$ ergs cm$^{-2}$ s$^{-1}$ in the 2-20 keV. The auto-detection (MAXI nova-search) systems detected a short excess event with a low significance (2.85$σ$) from 5257 s to 5260 s after the GW trigger. Finally, we discuss the sensitivity of MAXI to long X-ray emissions of short gamma-ray bursts, which are expected to accompany GW events.

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。

↑