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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-5072
DTSTART:20190314T203000Z
DTEND:20190314T220000Z
DTSTAMP:20260417T102953Z
LAST-MODIFIED:20190306T210623Z
LOCATION:4421 Sterling Hall\, Coffee and cookies 3:30 PM\, Talk begins
  3:45 PM
SUMMARY:Building a Gravitational Wave Detector with Millisecond Pulsar
 s\, Astronomy Colloquium\, Joseph Swiggum\, NANOGrav Postdoctoral Fell
 ow Center for Gravitation\, Cosmology\, & Astrophysics University of W
 isconsin-Milwaukee
DESCRIPTION:The Green Bank North Celestial Cap (GBNCC) pulsar survey a
 ims to cover the full sky north of -40 degrees declination at 350 MHz 
 using the Green Bank Telescope. One of the main science goals of the s
 urvey is to find new millisecond pulsars (MSPs) and rapidly assess the
 ir suitability for inclusion in pulsar timing arrays (PTAs). The North
  American Nanohertz Observatory for Gravitational Waves (NANOGrav) cur
 rently monitors about 75 MSPs with sub-microsecond RMS residuals in an
  effort to detect low-frequency gravitational waves from merging super
 massive black hole binaries. The best way to improve our sensitivity t
 o the stochastic gravitational wave background is to add high-caliber 
 MSPs to PTAs and this is also an essential strategy for long-term char
 acterization of the gravitational wave signal. Over the past two years
 \, ten MSPs have been discovered in the GBNCC pulsar survey. Several h
 ave already been added to NANOGrav and released to the International P
 ulsar Timing Array (IPTA) collaboration. I will discuss GBNCC survey s
 ensitivity\, search procedures\, and assessments of new MSP discoverie
 s for PTA inclusion\, as well as how current yields inform our future 
 strategies for gravitational wave detection and signal characterizatio
 n.
URL:https://www.physics.wisc.edu/events/?id=5072
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