亚太阳质量超紧双星引力波的探测方法
Methods for the detection of gravitational waves from sub-solar mass ultracompact binaries
摘要：
我们描述了探测方法的扩展引力波搜索亚太阳质量的紧凑的双星。以前使用Initial LIGO进行太阳下的质量搜索，而Advanced LIGO在设计灵敏度上的探测体积比Initial LIGO大约1000倍。低质量的计算困难，我们提出了一种方法来控制增加，同时保持比以前的搜索更大的灵敏度。太阳质量以下的致密物体特别令人感兴趣，因为它们预计不会在天体物理学上形成。如果被探测到，它们可能是原始黑洞（PBH）的证据。我们考虑了PBH二元形成的特定模型，该模型允许LIGO/Virgo在暗物质的背景下对该种群进行约束，并且我们演示了如何获得暗物质分数上限的保守界限。
英文摘要：
We describe detection methods for extensions of gravitational wave searches to sub-solar mass compact binaries. Sub-solar mass searches were previously carried out using Initial LIGO, and Advanced LIGO boasts a detection volume approximately 1000 times bigger than Initial LIGO at design sensitivity. Low masses present computational difficulties, and we suggest a way to rein in the increase while retaining a sensitivity much greater than previous searches. Sub-solar mass compact objects are of particular interest because they are not expected to form astrophysically. If detected they could be evidence of primordial black holes (PBH). We consider a particular model of PBH binary formation that would allow LIGO/Virgo to place constraints on this population within the context of dark matter, and we demonstrate how to obtain conservative bounds for the upper limit on the dark matter fraction.
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