X-ray upper limits of GW151226 with MAXI
X-ray upper limits of GW151226 with MAXI
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GW151226 与 MAXI 的 X 射线上限
DOI：
10.1093/pasj/psx086
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发表时间：
2017
影响因子：
2.3
通讯作者：
Nakahira Satoshi
中科院分区：
文献类型：
--
作者：
Serino Motoko;Kawai Nobuyuki;Negoro Hitoshi;Mihara Tatehiro;Masumitsu Takahiro;Nakahira Satoshi
利用全天X射线图像监视器（MAXI）观测到了引力波（GW）事件GW151226的误差区域。 MAXI 在 GW151226 时正在运行，并在事件发生后持续观察长达 4 分钟。在事件发生后的第一个 92 分钟轨道上，MAXI 覆盖了 GW 事件 90% 误差区域的约 84%。在 GW 误差区域中未检测到明显的 X 射线瞬变。典型的 3 σ 气体狭缝相机在 2–20 keV 波段的扫描上限为 1.2 × 10−9erg cm−2s−1。自动检测 (MAXI nova-search) 系统在 GW 触发后从 5257 s 到 5260 s 检测到一个显着性较低 (2.85 σ) 的短暂过量事件。最后，我们讨论了 MAXI 对短伽马射线爆发的长 X 射线发射的敏感性，预计这些爆发会伴随着巨星事件。
The error region of the the gravitational-wave (GW) event GW151226 was observed with Monitor of All-sky X-ray Image (MAXI). MAXI was operating at the time of GW151226, and continuously observed up to 4 min after the event. MAXI covered about 84% of the 90% error region of the GW event during the first 92 min orbit after the event. No significant X-ray transient was detected in the GW error region. A typical 3 σ Gas Slit Camera upper limit for a scan is 1.2 × 10−9erg cm−2s−1in the 2–20 keV band. The autodetection (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.