2024
DOI: 10.3847/1538-4357/ad8917
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Compact Binary Merger Rate with Modified Gravity in Dark Matter Spikes

Saeed Fakhry,
Sara Gholamhoseinian,
Marzieh Farhang

Abstract: In this study, we investigate the impact of modified gravity (MG) on the merger rate of compact binaries within dark matter spikes surrounding supermassive black holes (SMBHs). Specifically, we calculate the binary merger rates involving primordial black holes (PBHs) and/or neutron stars (NSs) in Hu–Sawicki f(R) gravity and the normal branch of Dvali–Gabadadze–Porrati (nDGP) gravity, with three SMBH mass functions: Benson, Vika, and Shankar. The results show consistently higher merger rates predicted for PBH–P… Show more

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