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SUMMARY:Strong support for a millisecond pulsar origin of the galactic cen
 ter GeV excess
DTSTART;VALUE=DATE-TIME:20151027T073000Z
DTEND;VALUE=DATE-TIME:20151027T074700Z
DTSTAMP;VALUE=DATE-TIME:20260509T171856Z
UID:indico-contribution-868@indico.icrr.u-tokyo.ac.jp
DESCRIPTION:Speakers: Richard Bartels (University of Amsterdam\, GRAPPA)\n
 Using gamma-ray data from the Fermi Large Area Telescope\, various groups 
 have identified an excess emission in the inner Galaxy centred around ener
 gies of a few GeV. This excess resembles remarkably well a signal from dar
 k matter annihilation. One of the most plausible astrophysical interpretat
 ions is in terms of the combined emission from an undetected population of
  dim gamma-ray sources. In particular\, millisecond pulsars are the best c
 andidates due to their spectral similarity to the excess emission. We sear
 ch for this hypothetical source population using a novel approach based on
  a wavelet decomposition of the gamma-ray sky and using the latest pass 8 
 data. Assuming a spatial distribution compatible with the GeV excess emiss
 ion\, we find evidence for the existence of such a population of dim sourc
 es in the inner galaxy at high significance. For plausible values of the l
 uminosity function\, this component can explain 100% of the observed exces
 s emission.\n\nhttps://indico.icrr.u-tokyo.ac.jp/event/23/contributions/86
 8/
LOCATION: Room 2
URL:https://indico.icrr.u-tokyo.ac.jp/event/23/contributions/868/
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