Radio Signal Constraints on Galactic Dark Matter Annihilation

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

DOI:https://doi.org/10.1063/1.3462665· OSTI ID:21410186

Borriello, E ^[1]; Cuoco, A ^[2]; Mangano, G ^[3]; Miele, G ^[1]; Moura, C A ^[3]

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1. Universita 'Federico II', Dipartimento di Scienze Fisiche, Napoli (Italy)
2. Department of Physics and Astronomy, University of Aarhus, Ny Munkegade, Bygn. 1520 8000 Aarhus (Denmark)
3. INFN Sezione di Napoli, Complesso Universitario di Monte S. Angelo, Via Cintia, I-80126 Napoli (Italy)

Annihilation of Dark Matter usually produces together with gamma rays comparable amounts of electrons and positrons. The e{sup +}e{sup -} gyrating in the galactic magnetic field then produce secondary synchrotron radiation which thus provides an indirect mean to constrain the DM signal itself. To this purpose, we calculate the radio emission from the galactic halo as well as from its expected substructures and we then compare it with the measured diffuse radio background. We employ a multi-frequency approach using data in the relevant frequency range 100 MHz-100 GHz, as well as the WMAP Haze data at 23 GHz. The derived constraints are of the order <{sigma}{sub A}{sup v}> = 10{sup -24} cm{sup 3}s{sup -1} for a DM mass m{sub {kappa}}= 100 GeV even though sensibly depending on the astrophysical uncertainties.

• OSTI ID: 21410186
• Journal Information: AIP Conference Proceedings, Vol. 1241, Issue 1; Conference: Conference on invisible universe, Paris (France), 29 Jun - 3 Jul 2009; Other Information: DOI: 10.1063/1.3462665; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ANNIHILATION
ASTROPHYSICS
COMPARATIVE EVALUATIONS
COSMIC POSITRONS
COSMIC RADIATION
ELECTRONS
EMISSION
GAMMA RADIATION
GEV RANGE 100-1000
MAGNETIC FIELDS
MASS
MHZ RANGE
NONLUMINOUS MATTER
RADIOWAVE RADIATION
SYNCHROTRON RADIATION
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BREMSSTRAHLUNG
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY RANGE
EVALUATION
FERMIONS
FREQUENCY RANGE
GEV RANGE
INTERACTIONS
IONIZING RADIATIONS
LEPTONS
MATTER
PARTICLE INTERACTIONS
PHYSICS
POSITRONS
RADIATIONS
SECONDARY COSMIC RADIATION