Five years of SGR 1900+14 observations with BeppoSAX

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dc.creatorEsposito, P.
dc.creatorMereghetti, S.
dc.creatorTiengo, A.
dc.creatorSidoli, L.
dc.creatorFeroci, M.
dc.creatorWoods, P.
dc.date2006-09-04
dc.date.accessioned2026-07-07T12:46:48Z
dc.date.available2026-07-07T12:46:48Z
dc.descriptionWe present a systematic analysis of all the BeppoSAX data of the soft gamma-ray repeater SGR 1900+14: these observations allowed us to study the long term properties of the source quiescent emission. In the observation carried out before the 1998 giant flare the spectrum in the 0.8-10 keV energy range was harder and there was evidence for a 20-150 keV emission, possibly associated with SGR 1900+14. This possible hard tail, if compared with the recent INTEGRAL detection of SGR 1900+14, has a harder spectrum (power-law photon index ~1.6 versus ~3) and a 20-100 keV flux ~4 times larger. In the last BeppoSAX observation (April 2002), while the source was entering the long quiescent period that lasted until 2006, the 2-10 keV flux was ~25% below the historical level. We also studied in detail the spectral evolution during the 2001 flare afterglow. This was characterized by a softening that can be interpreted in terms of a cooling blackbody-like component.
dc.descriptionAccepted for publication on Astronomy and Astrophysics on August 31, 2006
dc.identifierhttps://arxiv.org/abs/astro-ph/0609078
dc.identifierhttp://arxiv.org/abs/astro-ph/0609078
dc.identifierAstron.Astrophys.461:605-612,2007
dc.identifierdoi:10.1051/0004-6361:20065529
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/221507
dc.subjectAstrophysics
dc.titleFive years of SGR 1900+14 observations with BeppoSAX
dc.typetext

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