CMB data constraint on self-annihilation of dark matter particles

Journal Article · Wed Jun 23 04:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3462637· OSTI ID:21410183

Kim, Jaiseung; Naselsky, Pavel ^[1]

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1. Niels Bohr Institute, Blegdamsvej 17, DK-2100 Copenhagen (Denmark)

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}{nu}>/m{sub {kappa}.}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.

• OSTI ID: 21410183
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1241; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
79 ASTRONOMY AND ASTROPHYSICS
ANISOTROPY
ANNIHILATION
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BACKGROUND RADIATION
COSMIC ELECTRONS
COSMIC POSITRONS
COSMIC RADIATION
COSMOLOGY
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
GAMMA RADIATION
INTERACTIONS
IONIZING RADIATIONS
LEPTONS
MATTER
NONLUMINOUS MATTER
PARTICLE INTERACTIONS
PARTICLES
PLASMA
POSITRONS
RADIATIONS
RECOMBINATION
SECONDARY COSMIC RADIATION