2 research outputs found
Gamma Rays from SN1987A due to Pseudoscalar Conversion
A light pseudoscalar coupled to two photons would be copiously emitted by the
core of a supernova. Part of this flux would be converted to rays by
the galactic magnetic field. Measurements on the SN1987A ray flux by
the Gamma-Ray Spectrometer on the Solar Maximum Mission satellite already imply
a bound on the coupling GeV. The improved
generation of satellite-borne detectors, like EGRET or the project GLAST, could
be able to detect a pseudoscalar-to-photon signal from a nearby supernova, for
allowed values of .Comment: 8 pages, no figure
Neutrino Decay as an Explanation of Atmospheric Neutrino Observations
We show that the observed zenith angle dependence of the atmospheric
neutrinos can be accounted for by neutrino decay. Furthermore, it is possible
to account for all neutrino anomalies with just three flavors.Comment: 4 pages, 1 figur