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Searching for Mini Extreme Mass Ratio Inspirals with Gravitational-Wave Detectors

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arxiv 2205.10359 v1 pith:KVBQJJF4 submitted 2022-05-19 astro-ph.IM astro-ph.COastro-ph.HEgr-qchep-ph

classification astro-ph.IMastro-ph.COastro-ph.HEgr-qchep-ph
keywords masscompactdetectorsexoticextremegravitational-waveinspiralmini
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

A compact object with a mass $\mathcal{O}(1 \sim 1000) M_{\odot}$, such as a black hole of stellar or primordial origin or a neutron star, and a much lighter exotic compact object with a subsolar mass could form a non-standard mini extreme mass ratio inspiral (EMRI) and emit gravitational waves within the frequency band of ground-based gravitational-wave detectors. These systems are extremely interesting because detecting them would definitively point to new physics. We study the capability of using LIGO/Virgo to search for mini-EMRIs and find that a large class of exotic compact objects can be probed at current and design sensitivities using a method based on the Hough Transform that tracks quasi power-law signals during the inspiral phase of the mini-EMRI system.

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    gr-qc 2024-11 conditional novelty 6.0 of 10

    A generic GPU search engine plus a fast semianalytic sensitivity estimator could make blind continuous gravitational-wave searches much cheaper to run and characterize.

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