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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:2
UID:UW-Physics-Event-6472
DTSTART:20210917T203000Z
DURATION:PT1H0M0S
DTSTAMP:20260414T192021Z
LAST-MODIFIED:20210916T034815Z
LOCATION:2103 Chamberlin Hall
SUMMARY:Supermassive Black Holes and Merging Galaxies: Low-Frequency G
 ravitational Wave Detection with Pulsar Timing Arrays\, Physics Depart
 ment Colloquium\, Sarah Vigeland\, UW-Milwaukee
DESCRIPTION:Observations have shown that nearly all galaxies harbor ma
 ssive or supermassive black holes at their centers. Gravitational wave
  (GW) observations of these black holes will shed light on their growt
 h and evolution\, and the merger histories of galaxies. Pulsar timing 
 arrays (PTAs) use observations of millisecond pulsars to detect low-fr
 equency GWs with frequencies ~1-100 nHz\, and can detect GWs emitted b
 y supermassive black hole binaries\, which form when two galaxies merg
 e. In this talk\, I will discuss the current status of the North Ameri
 can Nanohertz Observatory for Gravitational Waves (NANOGrav) PTA\, wit
 h an emphasis on results from our most recent search for the stochasti
 c GW background. I will also discuss future prospects for detecting an
 d characterizing GWs from individual supermassive binary black holes w
 ith PTAs.
URL:https://www.physics.wisc.edu/events/?id=6472
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