Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2011-09-12
PoS(IDM2010)060
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
6 pages, 4 figures, talk given at the IDM 2010 conference, July 26-30 2010, Montpellier, France
Scientific paper
If dark matter decays or annihilates into electrons and positrons, it can affect radiation and cosmic-ray backgrounds. We review a novel, more general analysis of constraints on decaying dark matter models, by introducing the response functions based on the current radio, gamma-ray and positron observations. Constraints can be simply obtained by requiring the convolution of the response functions with actual decay spectrum of electrons and positrons smaller than the product of decay lifetime in 10^{26}s and mass in 100GeV. The response functions just depend on the astrophysical inputs such as the propagation model, but not on the microscopic decay scenario. Moreover, an anisotropy analysis of the full-sky radio emissions to identify the extragalactic dark matter annihilation is shown. We discuss the angular power spectra of the cosmological synchrotron emission from dark matter annihilations into electron positron pairs and compare them with astrophysical backgrounds and Galactic foregrounds. We find that the angular power spectrum of radio fluxes at around GHz frequencies and in the range of 200
No associations
LandOfFree
Indirect searches of dark matter 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 Indirect searches of dark matter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Indirect searches of dark matter will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-60237