BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:1
UID:UW-Physics-Event-6877
DTSTART:20220422T180000Z
DURATION:PT1H0M0S
DTSTAMP:20260414T144218Z
LAST-MODIFIED:20220419T184700Z
LOCATION:Chamberlin 5280
SUMMARY:Searching for Axion Conversion with the Breakthrough Listen GB
 T Galactic Center Survey\, Theory Seminar (High Energy/Cosmology)\, Jo
 shua Foster\, MIT
DESCRIPTION:The efficient conversion of axion to radio-band photons in
  neutron star magnetospheres provides a tantalizing opportunity to sea
 rch for micro-eV axion dark matter through indirect means with existin
 g and upcoming telescopes. We search for evidence of this conversion p
 rocess using archival Green Bank Telescope data collected in a survey 
 of the Galactic Center in the C-Band by the Breakthrough Listen projec
 t. While Breakthrough Listen aims to find signatures of extraterrestri
 al life in the radio band\, their high-frequency resolution spectral d
 ata of the Galactic Center region is ideal for searching for the quasi
 -monochromatic radio spectral lines of axion conversion. Using state-o
 f-the-art ray-tracing simulations and data-driven models of the neutro
 n star population in the inner pc of the galaxy\, we make use of 280 m
 inutes of observations of the inner GC to search for axion DM\, findin
 g no evidence for a signal and setting leading constraints on the axio
 n-photon coupling for masses between 15 and 35 micro-eV.
URL:https://www.physics.wisc.edu/events/?id=6877
END:VEVENT
END:VCALENDAR