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oai:recercat.cat:2117/190152026-02-01T07:44:05Zcom_2072_1033col_2072_452950

Detection and interpretation of gamma-ray emission from SNIa Isern Vilaboy, Jordi Bravo Guil, Eduardo Hirschmann, Alina Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear Universitat Politècnica de Catalunya. GAA - Grup d'Astronomia i Astrofísica Àrees temàtiques de la UPC::Física::Astronomia i astrofísica Supernovae Supernoves The explosion mechanism associated with thermonuclear supernovae (SNIa) is still a matter of debate. Nevertheless, there is a wide agreement that large amounts of radioactive nuclei are produced during these events, which are expected to be strong γ-ray emitters. In this paper we investigate the usability of these γ-rays as a diagnostic tool. For this purpose we studied the variety of γ-ray spectra associated with the different currently-proposed SNIa explosion scenarios: detonation, deflagration, delayed detonation, and pulsating delayed detonation. Our study demonstrates that γ-ray emission from SNIa is indeed a promising tool, although care must be taken to avoid misinterpretations. We also show that 3D effects can be relevant. They can provide important information about the exploding system and the thermonuclear burning front mechanism if sufficiently-high resolution spectra can be obtained. Peer Reviewed Postprint (published version) 2008-10 Article Isern, J.; Bravo, E.; Hirschmann, A. Detection and interpretation of gamma-ray emission from SNIa. "New astronomy reviews", Octubre 2008, vol. 52, núm. 7-10, p. 377-380. 1387-6473 https://hdl.handle.net/2117/19015 10.1016/j.newar.2008.06.021 eng http://www.sciencedirect.com/science/journal/13876473 Restricted access - publisher's policy 4 p. application/pdf