BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-1905
DTSTART:20110325T210000Z
DURATION:PT1H0M0S
DTSTAMP:20260315T024343Z
LAST-MODIFIED:20110207T171509Z
LOCATION:2241 Chamberlin Hall (coffee at 3:30 pm)
SUMMARY:Cosmology without Cosmic Variance\, Physics Department Colloqu
 ium\, Gary Bernstein\, University of Pennsylvania
DESCRIPTION:The acceleration of the Hubble expansion may be due to the
  failure of General Relativity to explain gravity on cosmological scal
 es.  This can be tested by measuring the gravitational growth of the l
 argest structures\, 100 Mpc or larger.  The standard methods for such 
 experiments involve measuring power spectra at different epochs\, and 
 are therefore limited by fluctuations from the finite number of large-
 scale modes in the observable Universe\, a.k.a. "cosmic variance."  I 
 will describe how galaxy redshift and weak gravitational lensing surve
 ys can be combined in a new way to measure gravitational growth to the
 oretically unlimited precision with a finite survey of the sky.
URL:https://www.physics.wisc.edu/events/?id=1905
END:VEVENT
END:VCALENDAR