Colloquium on 21 November 2013
Torque-Limited Growth of Massive Black Holes in Galaxies


Title: Torque-Limited Growth of Massive Black Holes in Galaxies
Speaker: Daniel Angles-Alcazar
Date: Thursday, 21 November 2013
Time: 11:00 - 12:00
Venue: 1896 Building


Current observations suggest that there is a close connection between
the formation and evolution of supermassive black holes and their host
galaxies.  Most models that attempt to explain this connection assume
that black hole growth is self-regulated by feedback from the
accretion process itself.  In this talk, I will describe an
alternative scenario consistent with available observations in which
the transport of angular momentum in the galaxy by gravitational
instabilities regulates the long-term co-evolution of black holes and
star-forming galaxies.  I will show that torque-limited growth yields
black holes and host galaxies evolving on average towards the observed
scaling relations, with no need for mass averaging through mergers or
additional self-regulation processes, and I will discuss the main
implications of torque-limited growth in the context of current
observations and theoretical models.

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