Pseudoscalar Conversion and Gamma-Rays from Supernovae

Details Pseudoscalar Conversion and Gamma-Rays from Supernovae Pseudoscalar Conversion and Gamma-Rays from Supernovae

1997-04-07

arxiv.org/abs/astro-ph/9704056v1

Astronomy and Astrophysics

Astrophysics

3 pages, latex, 1 figure. Talk at XXXIInd Rencontres de Moriond, ``Very High Energy Phenomena in the Universe'', Les Arcs, Fra

Scientific paper

A light pseudoscalar coupled to two photons would be copiously emitted by the core of a supernova and part of this flux would be converted to gamma-rays by the galactic magnetic field. Measurements on the SN1987A gamma-ray flux by the Gamma-Ray Spectrometer on the Solar Maximum Mission satellite imply stringents bounds on such process. The improved generation of satellite-borne detectors, like EGRET or the projegeneration of satellite-borne detectors, like EGRET or the project GLAST, could be able to detect a pseudoscalar-to-photon signal from a nearby supernova.

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