231 citations · 5.3k across the 87 of their papers we have counts for
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Gamma-ray Constraints on Dark Matter Annihilation into Charged Particles
Nicole F. Bell, Thomas D. Jacques
Dark matter annihilation into charged particles is necessarily accompanied by gamma rays, produced via radiative corrections. Internal bremsstrahlung from the final state particles…
Conservative Constraints on Dark Matter Annihilation into Gamma Rays
Gregory D. Mack, Thomas D. Jacques, John F. Beacom +2
Using gamma-ray data from observations of the Milky Way, Andromeda (M31), and the cosmic background, we calculate conservative upper limits on the dark matter self-annihilation cro…
Upper Bound on the Dark Matter Total Annihilation Cross Section
John F. Beacom, Nicole F. Bell, Gregory D. Mack
We consider dark matter annihilation into Standard Model particles and show that the least detectable final states, namely neutrinos, define an upper bound on the total cross secti…
Cosmological Signatures of Interacting Neutrinos
Nicole F. Bell, Elena Pierpaoli, Kris Sigurdson
We investigate signatures of neutrino scattering in the Cosmic Microwave Background (CMB) and matter power spectra, and the extent to which present cosmological data can distinguis…
Cosmological Lepton Asymmetry, Primordial Nucleosynthesis, and Sterile Neutrinos
Kevork Abazajian, Nicole F. Bell, George M. Fuller +1
We study post weak decoupling coherent active-sterile and active-active matter-enhanced neutrino flavor transformation in the early universe. We show that flavor conversion efficie…
Gamma-Ray Constraint on Galactic Positron Production by MeV Dark Matter
John F. Beacom, Nicole F. Bell, Gianfranco Bertone
The Galactic positrons, as observed by their annihilation gamma-ray line at 0.511 MeV, are difficult to account for with astrophysical sources. It has been proposed that they are p…