Radio signal constraints on galactic dark matter annihilation

E. Borriello, A. Cuoco, G. Mangano, G. Miele, C. A. Moura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Annihilation of Dark Matter usually produces together with gamma rays comparable amounts of electrons and positrons. The e+e- 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 〈σ Av〉=10-24cm3s-1 for a DM mass mκ=100GeV even though sensibly depending on the astrophysical uncertainties.

Original languageEnglish (US)
Title of host publicationInvisible Universe International Conference
Pages418-425
Number of pages8
DOIs
StatePublished - Aug 23 2010
Externally publishedYes
EventInvisible Universe International Conference - Paris, France
Duration: Jun 29 2009Jul 3 2009

Publication series

NameAIP Conference Proceedings
Volume1241
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherInvisible Universe International Conference
CountryFrance
CityParis
Period6/29/097/3/09

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Keywords

  • Dark Matter Annihilation
  • Radio Signal
  • Synchrotron Radiation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Borriello, E., Cuoco, A., Mangano, G., Miele, G., & Moura, C. A. (2010). Radio signal constraints on galactic dark matter annihilation. In Invisible Universe International Conference (pp. 418-425). (AIP Conference Proceedings; Vol. 1241). https://doi.org/10.1063/1.3462665