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  1. Pubblicazioni

Possibility of a Dark Matter Interpretation for the Excess in Isotropic Radio Emission Reported by ARCADE

Articolo
Data di Pubblicazione:
2011
Abstract:
The ARCADE 2 Collaboration has recently measured an isotropic radio emission which is significantly brighter than the expected contributions from known extra-galactic sources. The simplest explanation of such excess involves a "new'' population of unresolved sources which become the most numerous at very low (observationally unreached) brightness. We investigate this scenario in terms of synchrotron radiation induced by weakly interacting massive particle (WIMP) annihilations or decays in extra-galactic halos. Intriguingly, for light-mass WIMPs with a thermal annihilation cross section, the level of expected radio emission matches the ARCADE observations.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
Nicolao Fornengo; R. Lineros; Marco Regis; M. Taoso
Autori di Ateneo:
FORNENGO Nicolao
REGIS Marco
Link alla scheda completa:
https://iris.unito.it/handle/2318/97898
Link al Full Text:
https://iris.unito.it/retrieve/handle/2318/97898/14562/PhysRevLett.107.271302.pdf
Pubblicato in:
PHYSICAL REVIEW LETTERS
Journal
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URL

http://arxiv.org/abs/arXiv:1108.0569
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