论文标题
椭圆形 - 散射暗物质晕模型中原始黑洞中的二进制二进制的合并速率
The Merger Rate of Primordial Black Hole-Neutron Star Binaries in Ellipsoidal-Collapse Dark Matter Halo Models
论文作者
论文摘要
原始黑洞（PBHS）作为暗物质的潜在宏观候选者，由于它们的随机分布，可能会在暗物质光环中遇到其他紧凑型物体。此外，与恒星质量黑孔中性星（BH-NS）合并有关的引力波（GWS）的检测提高了参与此类事件的BHS的可能性可能具有原始起源。在这项工作中，我们计算了椭圆形 - 散发性暗物质模型框架内的PBH-NS二进制文件的合并速率，并将其与从球形 - 浪潮暗晕模型中得出的相应结果进行了比较。我们的结果表明，椭圆形的暗物质光环模型可以潜在地扩大PBH-NS二进制文件的合并速率，以使其非常接近Ligo-Virgo观察结果估计的范围。虽然球形浪潮暗物质光环模型不能证明PBH-NS合并事件是与Ligo-Virgo协作报告的最新GW数据的一致结果。此外，我们计算PBH-NS二进制文件的合并速率是PBH质量和分数在椭圆形散射暗物质晕模型的情况下的函数。结果表明，PBH-NS合并事件的质量为$（m_ {pbh} \ le 5 m _ {\ odot}，m_ {ns} \ simeq 1.4 m _ {\ odot}）$将与ligo-virgo gloservations If $ f _ {pbh} $ sime。我们还表明，至少要在$（m_ {pbh} \ simeq 5 m _ {\ odot}，m_ {ns} \ simeq 1.4 m _ {\ odot}）$ evernal com comov卷中的$ 1 gpc^{3} $每年的模型$ 1 gpc^{3} $ blose damplund ablund bys bys bys bys bys bys bys bys bys bys dimps dimps bys ablund ablund dimp dimps damplund。 $ f_ {pbh} \ geq 0.1 $。
Primordial black holes (PBHs), as a potential macroscopic candidate for dark matter, can encounter other compact objects in dark matter halos because of their random distribution. Besides, the detection of gravitational waves (GWs) related to the stellar-mass black hole-neutron star (BH-NS) mergers raises the possibility that the BHs involved in such events may have a primordial origin. In this work, we calculate the merger rate of PBH-NS binaries within the framework of ellipsoidal-collapse dark matter halo models and compare it with the corresponding results derived from spherical-collapse dark matter halo models. Our results exhibit that ellipsoidal-collapse dark matter halo models can potentially amplify the merger rate of PBH-NS binaries in such a way that it is very close to the range estimated by the LIGO-Virgo observations. While spherical-collapse dark matter halo models cannot justify PBH-NS merger events as consistent results with the latest GW data reported by the LIGO-Virgo collaboration. In addition, we calculate the merger rate of PBH-NS binaries as a function of PBH mass and fraction within the context of ellipsoidal-collapse dark matter halo models. The results indicate that PBH-NS merger events with the mass of $(M_{PBH}\le 5 M_{\odot}, M_{NS}\simeq 1.4 M_{\odot})$ will be consistent with the LIGO-Virgo observations if $f_{PBH}\simeq 1$. We also show that to have at least on $(M_{PBH}\simeq 5 M_{\odot}, M_{NS}\simeq 1.4 M_{\odot})$ event in the comoving volume $1 Gpc^{3}$ annually, ellipsoidal-collapse dark matter halo models constrain the abundance of PBHs as $f_{PBH} \geq 0.1$.
