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Comparing Accretion Disks and Dark Matter Spikes in Intermediate Mass Ratio Inspirals

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arxiv 2211.05145 v2 pith:Z5IQFQFL submitted 2022-11-09 gr-qc astro-ph.HEhep-th

Niklas Becker , Laura Sagunski This is my paper · ORCID
classification gr-qcastro-ph.HEhep-th
keywords accretioneffectsdarkdiskdisksgravitationalimriindex
verification ladder T0 review T1 audit T2 compute T3 formal
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Intermediate Mass Ratio Inspirals (IMRIs) will be observable with space-based gravitational wave detectors such as the Laser Interferometer Space Antenna (LISA). To this end, the environmental effects in such systems have to be modeled and understood. These effects can include (baryonic) accretion disks and dark matter (DM) overdensities, so called spikes. For the first time, we model an IMRI system with both an accretion disk and a DM spike present and compare their effects on the inspiral and the emitted gravitational wave signal. We study the eccentricity evolution, employ the braking index and derive the dephasing index, which turn out to be complementary observational signatures. They allow us to disentangle the accretion disk and DM spike effects in the IMRI system.

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Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Environmental effects in extreme mass ratio inspirals: perturbations to the environment in Kerr

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  3. Tidal Love numbers and quasi-normal modes of the Schwarzschild-Hernquist black hole

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  4. Probing dark matter halo profiles with multi-band observations of gravitational waves

    gr-qc 2024-11 conditional novelty 6.0 of 10

    A Fisher-matrix forecast shows that the proposed deci-Hz space detector GWSat would constrain dark matter spike density and slope around intermediate-mass ratio inspirals to sub-percent accuracy, while third-generatio...

  5. Eccentricity-Modulated Phase Degeneracy and Distinguishability between Dark Matter and Accretion Disk Environmental Effects in EMRIs

    gr-qc 2026-07 conditional novelty 5.5 of 10

    DM dephasing in EMRIs is nearly eccentricity-independent while disk dephasing is strongly suppressed by e0, so residual SNR and distinguishability time favor slightly eccentric orbits for LISA separation of the two effects.

  6. Probing vector gravitational atoms with eccentric intermediate mass-ratio inspirals

    gr-qc 2024-11 conditional novelty 5.0 of 10

    Eccentric intermediate-mass-ratio inspirals around vector gravitational atoms acquire faster decay, stronger circularization, and negative periastron precession, making the cloud visible to LISA-like detectors.

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