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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-3683
DTSTART:20150409T204500Z
DTEND:20150409T220000Z
DTSTAMP:20260414T124405Z
LAST-MODIFIED:20150320T160252Z
LOCATION:4421 Sterling Hall(Coffee and Cookies at 3:30 PM)
SUMMARY:Digging for buried Quasars with WISE and Planck\, Astronomy Co
 lloquium\, Mike Di Pompeo\, University of Wyoming
DESCRIPTION:Around 50% of quasars are hidden behind clouds of gas and 
 dust\, obscuring them from view in many wavebands. However\, the struc
 ture and scale of this obscuring material is poorly understood.  Study
 ing this population is critical to understanding the cosmic history of
  black hole growth and the mutual evolution of quasars and their host 
 galaxies.  Obscured quasars are efficiently identified in the infrared
 \, allowing the all-sky nature of WISE to select large samples of this
  subclass for the first time.  I will present measurements of the dark
  matter halo masses of WISE-selected obscured quasars\, as a proxy for
  their environment\, from two independent methods: the angular autocor
 relation function and a cross-correlation of the quasar density with l
 ensing maps of the CMB from Planck.  These measurements provide critic
 al insight into this important population of quasars.  <br><br>
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URL:https://www.physics.wisc.edu/events/?id=3683
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