Localization of binary black hole mergers with known inclination
Localization of binary black hole mergers with known inclination
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DOI：
10.1093/mnras/stz2072
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发表时间：
2019-02
影响因子：
4.8
通讯作者：
K. Corley;I. Bartos;L. Singer;A. Williamson;Z. Haiman;B. Kocsis;S. Nissanke;Z. Márka;S. Márka
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文献类型：
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作者：
K. Corley;I. Bartos;L. Singer;A. Williamson;Z. Haiman;B. Kocsis;S. Nissanke;Z. Márka;S. Márka
使用引力波定位恒星质量双黑洞合并对于理解双星宿主星系的特性、观察合并可能产生的电磁发射或将其用作宇宙学距离阶梯至关重要。利用有关双星系统的先前天体物理信息，可以大大提高这种定位的精度。特别是，限制双星的倾斜可以减少源的距离不确定性。在这里，我们提出了双星黑洞合并的第一套现实定位，包括对双星倾向的不同先验约束。我们发现有关倾角的先验信息可以将定位量减少 3 倍。我们讨论了两种感兴趣的天体物理场景：(i) 后续搜索波束电磁/中微子对应物和 (ii) 活动星系核吸积盘中的合并。
The localization of stellar-mass binary black hole mergers using gravitational waves is critical in understanding the properties of the binaries’ host galaxies, observing possible electromagnetic emission from the mergers, or using them as a cosmological distance ladder. The precision of this localization can be substantially increased with prior astrophysical information about the binary system. In particular, constraining the inclination of the binary can reduce the distance uncertainty of the source. Here, we present the first realistic set of localizations for binary black hole mergers, including different prior constraints on the binaries’ inclinations. We find that prior information on the inclination can reduce the localization volume by a factor of 3. We discuss two astrophysical scenarios of interest: (i) follow-up searches for beamed electromagnetic/neutrino counterparts and (ii) mergers in the accretion discs of active galactic nuclei.