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APS Neutrino Study: Report of the Neutrino Astrophysics and Cosmology Working Group
Steve W. Barwick, John F. Beacom, Vince Cianciolo +11
In 2002, Ray Davis and Masatoshi Koshiba were awarded the Nobel Prize in Physics ``for pioneering contributions to astrophysics, in particular for the detection of cosmic neutrinos…
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…
Neutrinoless Universe
John F. Beacom, Nicole F. Bell, Scott Dodelson
We consider the consequences for the relic neutrino abundance if extra neutrino interactions are allowed, e.g., the coupling of neutrinos to a light (compared to ) boson. For…
Angular Correlations of the MeV Cosmic Gamma Ray Background
Pengjie Zhang, John F. Beacom
The measured cosmic gamma ray background (CGB) spectrum at MeV energies is in reasonable agreement with the predicted contribution from type Ia supernovae (SNIa). But the character…