Galaxy Clusters and Gamma-Ray Lines: Probing Gravitino Dark Matter with the Fermi LAT

Autor:	Huang, Xiaoyuan, Vertongen, Gilles, Weniger, Christoph
Rok vydání:	2011
Předmět:	Astrophysics - High Energy Astrophysical Phenomena High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
Popis:	If dark matter particles are not perfectly stable, their decay products might be seen in the cosmic-ray fluxes. A natural candidate for decaying dark matter is the gravitino in R-parity violating scenarios. In the relevant GeV-TeV energy range, the Fermi Large Area Telescope (LAT) is now measuring cosmic gamma-ray fluxes with an unprecedented precision. We use the Fermi LAT gamma-ray data to search for signatures from gravitino dark matter particles, concentrating on gamma-ray lines and galaxy cluster observations. Implications of our results for the decay length of the next-to-lightest superparticle, which could be seen at the LHC in the near future, are discussed. Comment: 4 pages, 5 figures, 2011 Fermi Symposium proceedings - eConf C110509
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1110.6236 Zobrazit plný text záznamu View this record from Arxiv