Extreme Values of Black Hole to Stellar Mass Ratio for High-Redshift Galaxies
Astrophysics of Galaxies
2026-04-06 v1 Cosmology and Nongalactic Astrophysics
Abstract
With recent data from the \emph{James Webb Space Telescope} (JWST), it is possible to calculate the mass of the supermassive black holes at the centre of galaxies, and the stellar mass of the host galaxies at . In this work, we apply the method of extreme-value statistics to calculate the distributions of extreme black hole and stellar mass for the redshift range . We sample these distributions to obtain a prediction for the black hole to stellar mass ratio of over this redshift range, with the median in each bin varying in the range . Our predictions are consistent with the highest observed values of the ratio from JWST observations of high-redshift galaxies.
Keywords
Cite
@article{arxiv.2604.02568,
title = {Extreme Values of Black Hole to Stellar Mass Ratio for High-Redshift Galaxies},
author = {Cameron Heather and Teeraparb Chantavat and Siri Chongchitnan and Joseph Silk},
journal= {arXiv preprint arXiv:2604.02568},
year = {2026}
}
Comments
5 pages, 4 figures