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OATS-DAUT SEMINAR
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Speaker:
Francesco Shankar (SISSA)
Title:
Super-Massive Black Holes: The Missing Link in Galaxy Evolution
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Abstract:
Spectroscopic and photometric studies of the stellar and gas dynamics
in the very central regions of most local spheroidal galaxies and
prominent bulges have revealed the presence of a Super-massive
black hole (SMBH) at their center, tightly linked with the mass and
dispersion velocity of host galaxy. How and why SMBH have become so
closely linked with their host galaxies and possibly with the whole
surrounding Dark Matter (DM) halo? Starting from SMBH and AGN
demography I will derive the basic features of SMBH accretion. I will
then use Granato et al. (2004) model to show how the mutual feedback
between SMBH and stars can account for the tight link between SMBH
and galaxy and reproduce the AGN statistics. Finally I will show that
all the previous model-dependent results on baryon/SMBH evolution in
DM halos, can be directly inferred from detail analysis of the local
data.
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