Evidence for 1809 keV Gamma-Ray Emission from 26Al Decays in the Vela Region with INTEGRAL/SPI

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dc.creatorSchanne, Stephane
dc.creatorSizun, Patrick
dc.creatorMaurin, David
dc.creatorCordier, Bertrand
dc.creatorvon Kienlin, Andreas
dc.creatorHamadache, Clarisse
dc.date2007-01-23
dc.date.accessioned2026-07-07T07:42:31Z
dc.date.available2026-07-07T07:42:31Z
dc.descriptionThe Vela region is a promising target for the detection of 1.8 MeV gamma-rays emitted by the decays of radioactive 26Al isotopes produced in hydrostatic or explosive stellar nucleosynthesis processes. COMPTEL has claimed 1.8 MeV gamma-ray detection from Vela at a 3sigma level with a flux of 3.6 10^-5 ph/cm^2/s. In this paper, we present first results of our search for 1.8 MeV gamma-rays from Vela with the spectrometer SPI aboard INTEGRAL. Using the data set acquired during 1.7 Ms at the end of 2005 in the frame of our AO-3 open-time observation, we determine a flux of (6.5 \pm 1.9(stat) \pm 2.4(syst)) 10^-5 ph/cm^2/s from 26Al decays in the Vela region.
dc.description4 pages, 8 figures. Accepted for publication in ESA SP-622 (Proceedings of the 6th INTEGRAL Workshop, Moscow, 2006 07 03-07)
dc.identifierhttps://arxiv.org/abs/astro-ph/0701640
dc.identifierhttp://arxiv.org/abs/astro-ph/0701640
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/122470
dc.subjectAstrophysics
dc.titleEvidence for 1809 keV Gamma-Ray Emission from 26Al Decays in the Vela Region with INTEGRAL/SPI
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