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EnglishWe propose a new signature for weakly interacting massive particle (WIMP) dark matter, a spectral feature in the diffuse extragalactic gamma-ray radiation. This feature, a sudden drop of the gamma-ray intensity at an energy corresponding to the WIMP mass, comes from the asymmetric distortion of the line due to WIMP annihilation into two gamma rays caused by the cosmological redshift. Unlike other proposed searches for a line signal, this method is not very sensitive to the exact dark matter density distribution in halos and subhalos.
Spectral gamma-ray signatures of cosmological dark matter annihilations / L., Bergstrom; J., Edsjo; Ullio, Piero. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 87:25(2001), pp. 251301.1-251301.4. [10.1103/PhysRevLett.87.251301]
| Titolo: | Spectral gamma-ray signatures of cosmological dark matter annihilations | |
| Autori: | L., Bergstrom; J., Edsjo; Ullio, Piero | |
| Rivista: | ||
| Data di pubblicazione: | 2001 | |
| Volume: | 87 | |
| Fascicolo: | 25 | |
| Pagina iniziale: | 1 | |
| Pagina finale: | 4 | |
| Numero di Articolo: | 251301 | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevLett.87.251301 | |
| URL: | https://doi.org/10.1103/PhysRevLett.87.251301 https://arxiv.org/abs/astro-ph/0105048 | |
| Appare nelle tipologie: | 1.1 Journal article |
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| PhysRevLett.87.251301.pdf | Versione Editoriale (PDF) | Non specificato | Administrator Richiedi una copia |
http://hdl.handle.net/20.500.11767/14354
