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arXiv 2108.04839astro-ph.HE
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ASAS-SN在Advanced LIGO/Virgo第三次观测运行中寻找引力波事件的光学对应物

ASAS-SN search for optical counterparts of gravitational-wave events from the third observing run of Advanced LIGO/Virgo

T. de Jaeger, B. J. Shappee, C. S. Kochanek, K. Z. Stanek, J. F. Beacom, T. W. -S. Holoien, Todd A. Thompson, A. Franckowiak, S. Holmbo

摘要:

我们报告的搜索电磁对应的九个引力波事件与$>$ 60\%的概率包含一个中子星在第三(O3)LIGO-Virgo合作(LVC)观测运行与全天自动巡天超新星(ASAS-SN)。没有发现与引力波事件相关的光学对应物,但由于其望远镜网络,在触发后的前10小时内,至少一个ASAS-SN站点可见的平均区域包含了综合源位置概率的$\sim$ 30%。通过将正常作业和机会目标观测相结合,ASAS-SN在其中四个事件触发后一小时内开始对概率最高的场进行观测。24小时后,ASAS-SN观察到3起事件的总概率为$>$ 60%,除1起事件外的所有事件的总概率为$>$ 40%。这是最大的面积覆盖深度为$g = 18.5$镁从任何调查与公布的覆盖统计数据的九个事件中的七个。凭借其观测战略,全球五个站点和大视场,ASAS-SN将成为在LVC O 4期间光学搜索附近中子星合并的领先调查之一。

英文摘要:

We report on the search for electromagnetic counterparts to the nine gravitational-wave events with a $>$60\% probability of containing a neutron star during the third (O3) LIGO-Virgo Collaboration (LVC) observing run with the All-Sky Automated Survey for SuperNovae (ASAS-SN). No optical counterparts associated with a gravitational wave event was found. However, thanks to its network of telescopes, the average area visible to at least one ASAS-SN site during the first 10 hours after the trigger contained $\sim$30\% of the integrated source location probability. Through a combination of normal operations and target-of-opportunity observations, ASAS-SN observations of the highest probability fields began within one hour of the trigger for four of the events. After 24 hours, ASAS-SN observed $>$60\% of total probability for three events and $>$40\% for all but one of the events. This is the largest area coverage to a depth of $g = 18.5$ mag from any survey with published coverage statistics for seven of the nine events. With its observing strategy, five sites around the world, and a large field of view, ASAS-SN will be one of the leading surveys to optically search for nearby neutron star mergers during LVC O4.

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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