AUTHOR=Marsden Christopher , Shankar Francesco , Ginolfi Mitchele , Zubovas Kastytis 

TITLE=The Case for the Fundamental MBH-σ Relation

JOURNAL=Frontiers in Physics

VOLUME=Volume 8 - 2020

YEAR=2020

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2020.00061

DOI=10.3389/fphy.2020.00061

ISSN=2296-424X

ABSTRACT=Strong scaling relations between host galaxy properties (such as stellar mass, bulge mass, luminosity, effective radius etc) and their nuclear supermassive black hole's mass point towards a close coevolution. In this work, we present a review of previous efforts supporting the fundamental importance of the relation between supermassive black hole mass and stellar velocity dispersion (M-sigma), and present further original work supporting this claim via analysis of residuals and principal component analysis. We also review the main theoretical scenarios in favour of the existence of a M-sigma relation, showing this relation has a strong theoretical precedent.