The Blackhole-Dark Matter Halo Connection
Bassem M. Sabra, Charbel Saliba, Maya Abi Akl, Gilbert Chahine

TL;DR
This study investigates the link between supermassive black holes and dark matter halos by analyzing their masses and galaxy velocities, finding a weak correlation that suggests dark matter halos may not significantly influence black hole growth.
Contribution
It provides a more direct analysis of the SMBH-dark matter halo connection using galaxy measurements, challenging previous indirect approaches.
Findings
Weak correlation between SMBH mass and galaxy circular velocity
Dark matter halos may not significantly regulate SMBH growth
Uses a heterogeneous galaxy sample with direct measurements
Abstract
We explore the connection between the central supermassive blackholes (SMBH) in galaxies and the dark matter halo through the relation between the masses of the SMBHs and the maximum circular velocities of the host galaxies, as well as the relationship between stellar velocity dispersion of the spheroidal component and the circular velocity. Our assumption here is that the circular velocity is a proxy for the mass of the dark matter halo. We rely on a heterogeneous sample containing galaxies of all types. The only requirement is that the galaxy has a direct measurement of the mass of its SMBH and a direct measurement of its circular velocity and its velocity dispersion. Previous studies have analyzed the connection between the SMBH and dark matter halo through the relationship between the circular velocity and the bulge velocity dispersion, with the assumption that the bulge velocity…
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