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dc.contributor.authorMerritt, Daviden_US
dc.contributor.authorMilosavljevic, Milosen_US
dc.contributor.authorVerde, Liciaen_US
dc.contributor.authorJimenez, Raulen_US
dc.date.accessioned2006-03-28T18:48:55Zen_US
dc.date.available2006-03-28T18:48:55Zen_US
dc.date.issued2002-05-13en_US
dc.identifier.citationPhysical Review Letters 88 (2002) 191301en_US
dc.identifier.issn0031-9007en_US
dc.identifier.urihttp://hdl.handle.net/1850/1425en_US
dc.descriptionRIT community members may access full-text via RIT Libraries licensed databases: http://library.rit.edu/databases/
dc.description.abstractThe annihilation rate of weakly interacting cold dark matter particles at the galactic center could be greatly enhanced by the growth of a density spike around the central supermassive black hole (SBH). Here we discuss the effects of hierarchical mergers on the central spike. Mergers between halos containing SBHs lead to the formation of SBH binaries which transfer energy to the dark matter particles, lowering their density. The predicted flux of annihiliation photons from the galactic center is several orders of magnitude smaller than in models that ignore the effects of SBHs and mergers. Measurement of the annihilation radiation could in principle be used to constrain the merger history of the galaxy.en_US
dc.description.sponsorshipD. M. was supported by NSF grant AST 00-71099 and NASA grants NAG5-6037 and NAG5-9046, and L. V. was supported in part by NASA grant NAG5-7154.en_US
dc.format.extent155107 bytesen_US
dc.format.mimetypeapplication/pdfen_US
dc.language.isoen_USen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.ispartofseriesvol. 88en_US
dc.relation.ispartofseriesno. 19en_US
dc.subjectBlack holesen_US
dc.subjectGalaxies-dark matter spikesen_US
dc.titleDark matter spikes and annihilation radiation from the galactic centeren_US
dc.typeArticleen_US
dc.identifier.urlhttp://dx.doi.org/10.1103/PhysRevLett.88.191301


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