Early Annihilation and Diffuse Backgrounds in Models of Weakly Interacting Massive Particles in Which the Cross Section for Pair Annihilation Is Enhanced by 1/v
作者： Marc Kamionkowski , Stefano Profumo
DOI: 10.1103/PHYSREVLETT.101.261301
关键词:
摘要: Recent studies have considered modifications to the standard weakly interacting massive particle scenario in which pair annihilation cross section (times relative velocity v) is enhanced by a factor 1/v~10^-3 Galaxy, enough explain several puzzling Galactic radiation signals. We show that these scenarios burst of occurs first collapsed dark-matter halos. severe constraints derive from measurements diffuse extragalactic and ionization heating intergalactic medium.
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