论文标题
用Kilonovae样品测量哈勃常数
Measuring the Hubble Constant with a sample of kilonovae
论文作者
论文摘要
由紧凑型二进制文件与至少一个中子恒星结合产生的Kilonovae有望独立测量哈勃常数（$ H_0 $）。通过通过对重力波（GW）的随访，短伽马射线爆发（SGRB）或光学调查的检测，可以以$ h_0 $的condrapts来使用大量Kilonovae（即使没有GW数据）的大量样本。在这里，我们使用与四个SGRB相关的光曲线显示了$ h_0 $的测量，假设这些曲线可归因于基洛诺瓦，并结合了GW170817。在模型上包括与统计大小一样大的系统不确定性，我们发现$ h_0 = 73.8^{+6.3} _ { - 5.8} $ \，$ \ MATHRM {km} $ \ $ \ $ \ MATHRM {S} 71.2^{+3.2} _ { - 3.1} $ \，$ \ MATHRM {km} $ $ \ $ \ MATHRM {s}^{ - 1} $ \ $ \ MATHRM {MPC}^{ - 1} $对于两个不同的Kilonova型号，对于两个不同的Kilonova型号，这些模型与本地和iNverseVerseverSance lad andverseServersands lad and verseverseans and verseverseSance lad cormented andverseSance lad cormented complasters。对于给定的模型，此测量比仅使用GWS的GW170817的标准 - siren测量值高约2-3倍。
Kilonovae produced by the coalescence of compact binaries with at least one neutron star are promising standard sirens for an independent measurement of the Hubble constant ($H_0$). Through their detection via follow-up of gravitational-wave (GW), short gamma-ray bursts (sGRBs) or optical surveys, a large sample of kilonovae (even without GW data) can be used for $H_0$ contraints. Here, we show measurement of $H_0$ using light curves associated with four sGRBs, assuming these are attributable to kilonovae, combined with GW170817. Including a systematic uncertainty on the models that is as large as the statistical ones, we find $H_0 = 73.8^{+6.3}_{-5.8}$\,$\mathrm{km}$ $\mathrm{s}^{-1}$ $\mathrm{Mpc}^{-1}$ and $H_0 = 71.2^{+3.2}_{-3.1}$\,$\mathrm{km}$ $\mathrm{s}^{-1}$ $\mathrm{Mpc}^{-1}$ for two different kilonova models that are consistent with the local and inverse-distance ladder measurements. For a given model, this measurement is about a factor of 2-3 more precise than the standard-siren measurement for GW170817 using only GWs.
