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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:6
UID:UW-Physics-Event-9411
DTSTART:20251103T190000Z
DTEND:20251103T203000Z
DTSTAMP:20260413T084212Z
LAST-MODIFIED:20251104T010137Z
LOCATION:Chamberlin 5280
SUMMARY:Probing Dark Matter with Pulsar Timing Arrays and Gravitationa
 l Wave Detectors\, Theory Seminar (High Energy/Cosmology)\, Vincent S.
 H. Lee\, UC\, Berkeley
DESCRIPTION:Pulsar timing arrays (PTAs) and gravitational wave detecto
 rs can serve as valuable tools in the detection of dark matter. Dark m
 atter substructure within the Milky Way Galaxy can induce gravitationa
 l pulls on pulsars\, leading to observable deviations in pulsar timing
 s. We demonstrate that dark matter models predicting enhanced power on
  small scales (< pc) are potentially within the reach of future PTA ex
 periments\, such as the Square Kilometer Array (SKA). This includes a 
 class of post-inflationary QCD axion models known as axion minicluster
 s. We also discuss pipelines for searching for dark matter signals in 
 PTA datasets and recent results from the 15-year data release of the N
 orth American Nanohertz Observatory for Gravitational Waves (NANOGrav)
 \, which has reported evidence of a stochastic gravitational backgroun
 d. Furthermore\, dark matter particles with a mass on the kilogram sca
 le can also produce signals in laser interferometry-based gravitationa
 l wave experiments. We discuss the signals and detection prospects fro
 m current and future gravitational wave experiments\, such as LIGO and
  the Einstein Telescope. Event recording: https://youtu.be/rcNRYNwpcI0
URL:https://www.physics.wisc.edu/events/?id=9411
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