Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/13215
 Title: Gamma rays from SN 1987A due to pseudoscalar conversion Author: Grifols, Josep AntoniMassó i Soler, Eduard, 1954-Toldrà Sabaté, Ramon Keywords: AstronomiaAstrofísicaPartícules (Física)Fundamental astronomy and astrophysicsProperties of specific particles Issue Date: 1996 Publisher: American Physical Society Abstract: 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 $\gamma-$rays by the galactic magnetic field. Measurements on the SN1987A $\gamma-$ray flux by the Gamma-Ray Spectrometer on the Solar Maximum Mission satellite already imply a bound on the coupling $g < 3 \times 10^{-12}$ GeV$^{-1}$. 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 $g$. Note: Reproducció digital del document proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevLett.77.2372 It is part of: Physical Review Letters, 1996, vol. 77, núm. 12, p. 2372-2375 Related resource: http://dx.doi.org/10.1103/PhysRevLett.77.2372 URI: http://hdl.handle.net/2445/13215 ISSN: 0031-9007 Appears in Collections: Articles publicats en revistes (Física de la Matèria Condensada)

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