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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-3407
DTSTART:20140911T203000Z
DTEND:20140911T220000Z
DTSTAMP:20260413T151748Z
LAST-MODIFIED:20140805T140253Z
LOCATION:4421 Sterling Hall
SUMMARY:Probing the Origin of Supermassive Black Holes with Dwarf Gala
 xies\, Astronomy Colloquium\, Amy Reines\, NRAO
DESCRIPTION:Supermassive black holes (BHs) live at the heart of essent
 ially all massive galaxies with bulges\, power AGN\, and are thought t
 o be important agents in the evolution of their hosts.  However\, the 
 origin of the first supermassive BH &quot\;seeds&quot\; is far from un
 derstood.  While direct observations of these distant BHs in the infan
 t Universe are unobtainable with current capabilities\, massive BHs in
  present-day dwarf galaxies offer another avenue to observationally co
 nstrain the masses\, host galaxies and formation path of supermassive 
 BH seeds.  Using optical spectroscopy from the SDSS\, we have increase
 d the number of known dwarf galaxies hosting massive BHs by more than 
 an order of magnitude.  These dwarf galaxies have stellar masses compa
 rable to the Magellanic Clouds and contain some of the least-massive s
 upermassive BHs known.  I will present results from this study\, and w
 ell as on-going efforts using radio and X-ray observations to reveal m
 assive BHs in star-forming dwarfs that can be missed by optical diagno
 stics.
URL:https://www.physics.wisc.edu/events/?id=3407
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