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SUMMARY:Unleashing Feedback in Galaxy Formation  - Joe Silk (IAP\, JHU and
  University of Oxford)
DTSTART:20140602T120000Z
DTEND:20140602T130000Z
UID:TALK50927@talks.cam.ac.uk
CONTACT:33215
DESCRIPTION:I will review our understanding of feedback in galaxies. I wil
 l briefly discuss disk galaxies\, and then  focus on massive spheroids\, w
 here one invariably finds evidence for the presence of supermassive black 
 holes.  These are often visible\, especially at early epochs\, as  active 
 galactic nuclei. Negative feedback\, from the central black hole  during i
 ts accretion phase\, is believed to quench the gas  supply to the spheroid
  and thereby suppresses star formation. We also observe enhanced star form
 ation at early epochs. This may provide evidence for positive AGN feedback
 . I will review the various theoretical and observational implications of 
 the AGN-star formation connection.
LOCATION:CMS\, Pav. B\, CTC Common Room (B1.19) [Potter Room]
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