CMB data constraint on self-annihilation of dark matter particles
Abstract
Recently, self-annihilation of dark matter particles is proposed to explain the "WMAP Haze" and excess of energetic positrons and electrons in ATIC and PAMELA results. If self-annihilation of dark matter occurs around the recombination of cosmic plasma, energy release from self-annihilation of dark matter delays the recombination, and hence affects CMB anisotropy. By using the recent CMB data, we have investigated the self-annihilation of dark matter particles. In this investigation, we do not find statistically significant evidence, and impose an upper bound on <sigma v> / m_chi. The upcoming data from Planck surveyor and the Fermi Gamma-ray telescope will allow us to break some of parameter degeneracy and improve constraints on self-annihilation of dark matter particles.
Cite
@article{arxiv.1001.4691,
title = {CMB data constraint on self-annihilation of dark matter particles},
author = {Jaiseung Kim and Pavel Naselsky},
journal= {arXiv preprint arXiv:1001.4691},
year = {2015}
}
Comments
a talk presented at the Invisible Universe International Conference at the Palais de l'UNESCO, Paris, v2: references added