1996/06/05 by J. A. Grifols, J.A. Grifols, Eduard Massó +3 · 7 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Dark Matter and Cosmic Phenomena #Neutrino Physics Research #astro-ph #hep-ph
paper · pdf · doi:10.1103/physrevlett.77.2372
published as Phys.Rev.Lett. 77 (1996) 2372-2375 · 8 pages, no figures
arxiv created 1996/06/05 · openalex publication_date 1996/09/16 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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 \ensuremathγ rays by the galactic magnetic field. Measurements on the SN 1987A \ensuremathγ-ray flux by the Gamma-Ray Spectrometer on the Solar Maximum Mission satellite already imply a bound on the coupling g<3\ifmmode×\else\texttimes\fi10^\ensuremath-12GeV^\ensuremath-1. 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 g.