Speaker
Prof.
Yue Zhao
(University of Utah)
Description
Over ten years ago, Fermi observed an excess of GeV gamma rays from
the Galactic Center whose origin is still under debate. One
explanation for this excess involves annihilating dark matter; another
requires an unresolved population of millisecond pulsars concentrated
at the Galactic Center. We use the results from LIGO/Virgo/KAGRA's most
recent all-sky search for quasi-monochromatic, persistent
gravitational-wave signals from isolated neutron stars to determine
whether unresolved millisecond pulsars could actually explain this
excess. We find that a large set of the parameter space in the pulsar
luminosity function can be excluded.
Primary author
Prof.
Yue Zhao
(University of Utah)
Co-author
Andrew Miller
(Nikhef / Utrecht University)
