Predicting electromagnetic counterparts using low-latency gravitational-wave data products
Predicting electromagnetic counterparts using low-latency gravitational-wave data products
复制标题
使用低延迟引力波数据产品预测电磁对应物
DOI：
10.1093/mnras/stab1492
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发表时间：
2021
影响因子：
4.8
通讯作者：
Schianchi, Federico
中科院分区：
文献类型：
--
作者：
Stachie, Cosmin;Coughlin, Michael W;Dietrich, Tim;Antier, Sarah;Bulla, Mattia;Christensen, Nelson;Essick, Reed;Landry, Philippe;Mours, Benoit;Schianchi, Federico
自GW 170817和AT 2017 gfo发现以来，引力波对应物的研究一直在认真进行。从那时起，缺乏检测其他光学对应物连接到双中子星星或黑洞中子星星候选人突出了需要一个更好的判别标准，以支持这一努力。目前，低延迟的引力波警报包含了关于双星性质的初步信息，从而确定了探测到的双星是否可能有电磁对应物。目前的警报方法是一个分类器，估计合并过程中产生的黑洞外部存在碎片盘的概率，以及信号是双中子星星、黑洞-中子星星、双黑洞或地球起源的概率。在这项工作中，我们扩展了这种方法来预测喷出物的属性，并提供这些事件的潜在光变曲线的轮廓，以改善后续的观察策略。各种来源的不确定性进行了讨论，我们的结论是，我们的喷出物的成分和低延迟管道的二进制参数的约束不足的无知代表的主要局限性。为了验证该方法，我们测试我们的方法对真实的事件从第二和第三先进激光干涉引力波天文台（LIGO）-处女座观测运行。
Searches for gravitational-wave counterparts have been going in earnest since GW170817 and the discovery of AT2017gfo. Since then, the lack of detection of other optical counterparts connected to binary neutron star or black hole–neutron star candidates has highlighted the need for a better discrimination criterion to support this effort. At the moment, low-latency gravitational-wave alerts contain preliminary information about binary properties and hence whether a detected binary might have an electromagnetic counterpart. The current alert method is a classifier that estimates the probability that there is a debris disc outside the black hole created during the merger as well as the probability of a signal being a binary neutron star, a black hole–neutron star, a binary black hole, or of terrestrial origin. In this work, we expand upon this approach to both predict the ejecta properties and provide contours of potential light curves for these events, in order to improve the follow-up observation strategy. The various sources of uncertainty are discussed, and we conclude that our ignorance about the ejecta composition and the insufficient constraint of the binary parameters by low-latency pipelines represent the main limitations. To validate the method, we test our approach on real events from the second and third Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO)–Virgo observing runs.
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影响因子：
56.9
作者：
Dietrich, Tim;Coughlin, Michael W.;Antier, Sarah
通讯作者：
Antier, Sarah
DOI：
10.3847/1538-4357/aabaec
发表时间：
2017-11
期刊：
The Astrophysical Journal
影响因子：
--
作者：
D. Siegel;B. Metzger
通讯作者：
D. Siegel;B. Metzger
影响因子：
14.1
作者：
Capano, Collin D.;Tews, Ingo;Reddy, Sanjay
通讯作者：
Reddy, Sanjay
影响因子：
5
作者：
Lee Lindblom;Nathaniel M. Indik
通讯作者：
Nathaniel M. Indik
影响因子：
3.4
作者：
K. Cannon;S. Caudill;C. Chan;B. Cousins;J. Creighton;B. Ewing;H. Fong;P. Godwin;C. Hanna
通讯作者：
K. Cannon;S. Caudill;C. Chan;B. Cousins;J. Creighton;B. Ewing;H. Fong;P. Godwin;C. Hanna