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SUMMARY:Testing the Millisecond Pulsar Scenario of the Galactic Center Gam
 ma-Ray Excess With Very High Energy Gamma-Rays
DTSTART;VALUE=DATE-TIME:20151029T081500Z
DTEND;VALUE=DATE-TIME:20151029T083500Z
DTSTAMP;VALUE=DATE-TIME:20260313T210209Z
UID:indico-contribution-907@indico.icrr.u-tokyo.ac.jp
DESCRIPTION:Speakers: Kunihito Ioka (KEK)\nRecent analyses of Fermi Large 
 Area Telescope data show an extended GeV γ-ray excess on top of the expec
 ted diffuse background in the Galactic center region\, which can be explai
 ned by annihilating dark matter (DM) or a population of millisecond pulsar
 s (MSPs). We propose observations of very high energy (VHE) γ-rays to dis
 tinguish the MSP scenario from the DM scenario. GeV γ-ray MSPs should rel
 ease most of their energy to the relativistic e± wind\, which will diffus
 e into the Galaxy and radiate TeV γ-rays through inverse Compton scatteri
 ng and bremsstrahlung processes. By calculating the spectrum and spatial d
 istribution\, we show that such emission is detectable with the next gener
 ation VHE γ-ray observatory\, the Cherenkov Telescope Array (CTA)\, under
  reasonable model parameters. It is essential to search for multi-waveleng
 th counterparts to the GeV γ-ray excess in order to solve this mystery in
  the high-energy universe.\n\nhttps://indico.icrr.u-tokyo.ac.jp/event/23/c
 ontributions/907/
LOCATION: Room 5.6
URL:https://indico.icrr.u-tokyo.ac.jp/event/23/contributions/907/
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