论文标题
使用重力波镜头将黑洞与亚弧形精度合并在一起
Localizing merging black holes with sub-arcsecond precision using gravitational-wave lensing
论文作者
论文摘要
当前的重力波定位方法主要依赖于具有电磁对应物的来源。不幸的是,二进制黑洞不会发光。因此,通常不可能精确地定位这些对象。但是,在这十年中预测的强烈镜头引力波可以通过定位其镜头宿主星系来定位二进制。识别正确的寄主星系是具有挑战性的,因为在重力波观察中,天空区域内还有数百至其他镜头星系。但是,我们可以通过重力波和电磁观测来限制镜头星系的物理特性。我们表明,这些同时的约束允许在典型场景中使用Ligo/Pirgo/Kagra网络将四倍的波浪定位在一个或最多的一个星系中。一旦识别主机,我们就可以将二进制定位到主机银河系中的两个亚弧形区域。此外,我们演示了如何使用系统来测量哈勃常数作为原理应用。
The current gravitational-wave localization methods rely mainly on sources with electromagnetic counterparts. Unfortunately, a binary black hole does not emit light. Due to this, it is generally not possible to localize these objects precisely. However, strongly lensed gravitational waves, which are forecasted in this decade, could allow us to localize the binary by locating its lensed host galaxy. Identifying the correct host galaxy is challenging because there are hundreds to thousands of other lensed galaxies within the sky area spanned by the gravitational-wave observation. However, we can constrain the lensing galaxy's physical properties through both gravitational-wave and electromagnetic observations. We show that these simultaneous constraints allow one to localize quadruply lensed waves to one or at most a few galaxies with the LIGO/Virgo/Kagra network in typical scenarios. Once we identify the host, we can localize the binary to two sub-arcsec regions within the host galaxy. Moreover, we demonstrate how to use the system to measure the Hubble constant as a proof-of-principle application.