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- W3170928731 abstract "We study the merger rate of primordial black holes (PBHs) in self-interacting dark matter (SIDM) halo models. To explore a numerical description for the density profile of SIDM halo models, we use the result of a previously performed simulation for SIDM halo models with $sigma/m=10~{rm cm^{2}g^{-1}}$. We also propose a concentration-mass-time relation that can explain the evolution of the halo density profile related to SIDM models. Furthermore, we investigate the encounter condition of PBHs that may have been randomly distributed in the medium of dark matter halos. Under these assumptions, we calculate the merger rate of PBHs within each halo considering SIDM halo models and compare the results with that obtained for cold dark matter (CDM) halo models. To do this, we employ the definition of the time after halo virialization as a function of halo mass. We indicate that SIDM halo models for $f_{rm PBH}>0.32$ can generate sufficient PBH mergers in such a way that those exceed the one resulted from CDM halo models. By considering the spherical-collapse halo mass function, we obtain similar results for the cumulative merger rate of PBHs. Moreover, we calculate the redshift evolution of the PBH total merger rate. To determine a constraint on the PBH abundance, we study the merger rate of PBHs in terms of their fraction and masses and compare those with the black hole merger rate estimated by the Advanced LIGO (aLIGO)-Advanced Virgo (aVirgo) detectors during the third observing run. The results demonstrate that within the context of SIDM halo models, the merger rate of $10~M_{odot}-10~M_{odot}$ events can potentially fall within the aLIGO-aVirgo window. We also estimate a relation between the fraction of PBHs and their masses, which is well consistent with our findings." @default.
- W3170928731 created "2021-06-22" @default.
- W3170928731 creator A5012708542 @default.
- W3170928731 creator A5047317136 @default.
- W3170928731 creator A5064832543 @default.
- W3170928731 creator A5070581935 @default.
- W3170928731 date "2022-02-17" @default.
- W3170928731 modified "2023-09-25" @default.
- W3170928731 title "Primordial black hole merger rate in self-interacting dark matter halo models" @default.
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- W3170928731 doi "https://doi.org/10.1103/physrevd.105.043525" @default.
- W3170928731 hasPublicationYear "2022" @default.
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