标题： LIGO黑洞的不可约质量与视界面面积 显示英文标题

标题： The irreducible mass and the horizon area of LIGO's black holes

摘要： 克尔黑洞的质量可以分为非可逆质量和旋转成分——前者是不能从事件视界提取的能量的下限，并且与黑洞的面积相关。 在这里，我们计算由引力波干涉仪LIGO和Virgo观测到的恒星级黑洞的非可逆质量。 利用单次事件数据，我们提出了后验分布的一个重新参数化，明确突出总能量中的非可逆和旋转贡献。 我们利用面积定律，根据不可逆性对迄今为止观测到的黑洞合并进行排序，从而为选择用于广义相对论定向测试的事件提供指导。 使用群体拟合，我们计算由于可观测的合并导致黑洞视界总面积增加的速率。 显示英文摘要

摘要： The mass of a Kerr black hole can be separated into irreducible and rotational components -the former is a lower limit to the energy that cannot be possibly extracted from the event horizon and is related to its area. Here we compute the irreducible masses of the stellar-mass black holes observed by gravitational-wave interferometers LIGO and Virgo. Using single-event data, we present a re-parametrization of the posterior distribution that explicitly highlights the irreducible and rotational contributions to the total energy. We exploit the area law to rank the black-hole mergers observed to date according to their irreversibility, thus providing a guide to selecting events for targeted tests of General Relativity. Using population fits, we compute the rate by which the total area of black-hole horizons increases due to the observable mergers.