3 years ago

Methods for the detection of gravitational waves from sub-solar mass ultracompact binaries.

Ryan Magee, Anne-Sylvie Deutsch, Christian Horst, Duncan Meacher, Cody Messick, Phoebe McClincy, Sarah Shandera, Chad Hanna, Madeline Wade

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.

Publisher URL: http://arxiv.org/abs/1808.04772

DOI: arXiv:1808.04772v1

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