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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:1
UID:UW-Physics-Event-6333
DTSTART:20210427T190000Z
DURATION:PT1H0M0S
DTSTAMP:20260414T234155Z
LAST-MODIFIED:20210426T003342Z
LOCATION:https://berkeley.zoom.us/j/91922781599
SUMMARY:Axion Production in Magnetars\, Network in Neutrinos\, Nuclear
  Astrophysics\, and Symmetries (N3AS) Seminar\, Steven Harris\, INT-U.
  Washington
DESCRIPTION:The dense core of a neutron star may provide an ideal envi
 ronment for the production of axions.  Axions created in the core via 
 nucleon bremsstrahlung processes would escape the neutron star and\, w
 ith some conversion efficiency\, turn into photons in the magnetospher
 e.  The large external magnetic field of a magnetar enhances the conve
 rsion probability\, making magnetars a particularly strong source of a
 xion-induced photons.  I will review the mechanisms of axion productio
 n in dense nuclear matter and calculate the energy spectrum of the pho
 tons coming from axion-photon conversion.  This spectrum is compared t
 o observed hard X-ray spectra from several magnetars in the McGill mag
 netar catalog to put limits on the product of the axion couplings to n
 ucleons and photons as a function of the magnetar core 
URL:https://www.physics.wisc.edu/events/?id=6333
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