论文标题
将Ligo/处女座的“质量差距”事件解释为镜头中子星形黑孔二进制
Interpreting LIGO/Virgo "Mass-Gap" events as lensed Neutron Star-Black Hole binaries
论文作者
论文摘要
重力镜头允许在宇宙学距离上检测二进制黑洞（BBH），并在$ 1 <z <4 $的范围内增强了$ 1+z $，与报道的BBH群众非常吻合。我们提出这种效果还解释了Ligo/处女座新报道的令人困惑的“大规模差距”事件（MG），作为遥远的镜头NSBH事件，售价为$ 1 <z <4 $。中子恒星成员的拟合质量变为$（1+z）\ times 14m_ \ odot $，因此被错误地分类为低质量黑洞。通过这种方式，我们将$ z \ simeq 3.5 $和$ z \ simeq 1.0 $的红移推出，用于两个新报告的“质量不对称”事件GW190412 \＆gw190814，通过将它们解释为镜头的NSBH事件，包括镜头NSBH事件，包括出色的Mass Black shole Black hole shole black hole seltron and Neadron和中子星。在过去的一年中，报告了另外31个BBH事件和5毫克事件的可能性很高（$> 95 \％$），我们从中推断出一个因子$ \ simeq 5 $ NSBH事件的内在率高于BBH事件，反映了早期恒星形成形成的中子星的比例更高。我们预测在观察到的二进制质量平面中的镜头NSBH事件的独特基因座，跨越$ 1 <z <4 $，质量比$ q \ simeq 0.2 $，当波形数据解锁时，可以很容易地测试。所有此类事件都可能显示出NS发射的干扰，并且值得迅速随访，因为高镜头放大倍率意味着尽管我们预测的是高红移，但EM检测并不是令人望而却步的。这种镜头的NSBH事件为通过其波形的宇宙学红移直接绘制了二进制的历史提供了令人兴奋的前景，这是相对于中子星的特征性质量确定的。
Gravitational lensing allows the detection of binary black holes (BBH) at cosmological distances with chirp masses that appear to be enhanced by $1+z$ in the range $1<z<4$, in good agreement with the reported BBH masses. We propose this effect also accounts for the puzzling "mass gap" events (MG) newly reported by LIGO/Virgo, as distant, lensed NSBH events with $1<z<4$. The fitted mass of the neutron star member becomes $(1+z)\times 1.4M_\odot$, and is therefore misclassified as a low mass black hole. In this way, we derive a redshift of $z\simeq 3.5$ and $z\simeq 1.0$ for two newly reported "mass asymmetric" events GW190412 \& GW190814, by interpreting them as lensed NSBH events, comprising a stellar mass black hole and neutron star. Over the past year an additional 31 BBH events and 5 MG events have been reported with high probability ($>95\%$), from which we infer a factor $\simeq 5$ higher intrinsic rate of NSBH events than BBH events, reflecting a higher proportion of neutron stars formed by early star formation. We predict a distinctive locus for lensed NSBH events in the observed binary mass plane, spanning $1<z<4$ with a narrow mass ratio, $q \simeq 0.2$, that can be readily tested when the waveform data are unlocked. All such events may show disrupted NS emission and are worthy of prompt follow-up as the high lensing magnification means EM detections are not prohibitive despite the high redshifts that we predict. Such lensed NSBH events provide an exciting prospect of directly charting the history of coalescing binaries via the cosmological redshift of their waveforms, determined relative to the characteristic mass of the neutron star member.
