Can proper motions of dark-matter subhalos be detected?

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

4 pages; accepted for publication in PRD Rapid Communication

Scientific paper

10.1103/PhysRevD.78.101301

One of the goals of NASA's Fermi Gamma-ray Space Telescope (formerly GLAST) will be detection of gamma rays from dark-matter annihilation in the Galactic halo. Theoretical arguments suggest that dark matter may be bound into subhalos with masses as small as 10^{-4}--10^2 Earth mass. If so, it may be possible to detect individual subhalos as point sources in the Fermi Telescope. It has further been argued that some of these point sources may exhibit proper motions. Here we show that upper limits to the diffuse gamma-ray background constrain the number of subhalos close enough to exhibit proper motions to be less than one.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Can proper motions of dark-matter subhalos be detected? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Can proper motions of dark-matter subhalos be detected?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Can proper motions of dark-matter subhalos be detected? will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-658223

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.