The surface brightness of dark matter: unique signatures of neutralino annihilation in the Galactic halo

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dc.creatorCalcaneo-Roldan, Carlos
dc.creatorMoore, Ben
dc.date2000-10-03
dc.date.accessioned2026-07-07T11:28:43Z
dc.date.available2026-07-07T11:28:43Z
dc.descriptionWe use high resolution numerical simulations of the formation of cold dark matter halos to simulate the background of decay products from neutralino annihilation, such as gamma-rays or neutrinos. Halos are non-spherical, have steep singular density profiles and contain many thousands of surviving dark matter substructure clumps. This leads to several unique signatures in the gamma-ray background that may be confirmed or rejected by the next generation of gamma-ray experiments. Most importantly, the diffuse background is enhanced by over two orders of magnitude due to annihilation within substructure halos. The largest dark substructures are easily visibly above the background and may account for the unidentified EGRET sources. A deep strip survey of the gamma-ray background would allow the shape of the Galactic halo to be quantified.
dc.description11 pages, 12 figures. Phys. Rev. D. in press. Low resolution figures included; high resolution version available at http://www.dur.ac.uk/c.a.calcaneo-roldan/papers.html
dc.identifierhttps://arxiv.org/abs/astro-ph/0010056
dc.identifierhttp://arxiv.org/abs/astro-ph/0010056
dc.identifierPhys.Rev.D62:123005,2000
dc.identifierdoi:10.1103/PhysRevD.62.123005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/196484
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleThe surface brightness of dark matter: unique signatures of neutralino annihilation in the Galactic halo
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