Long term spectral variability in the soft gamma ray repeater SGR 1900+14

Simple item page
dc.creatorEsposito, P.
dc.creatorMereghetti, S.
dc.creatorTiengo, A.
dc.creatorGoetz, D.
dc.creatorSidoli, L.
dc.creatorFeroci, M.
dc.date2006-12-29
dc.date2007-01-09
dc.date.accessioned2026-07-07T10:36:45Z
dc.date.available2026-07-07T10:36:45Z
dc.descriptionWe present a systematic analysis of all the BeppoSAX data of SGR 1900+14. The observations spanning five years show that the source was brighter than usual on two occasions: ~20 days after the August 1998 giant flare and during the 10^5 sec long X-ray afterglow following the April 2001 intermediate flare. In the latter case, we explore the possibility of describing the observed short term softening only with a change of the temperature of a blackbody-like component. In the only BeppoSAX observation performed before the giant flare, the spectrum of the SGR 1900+14 persistent emission was significantly harder and possibly detected also above 10 keV with the PDS instrument. In the last BeppoSAX observation (April 2002) the flux was ~25 % lower than the historical level, suggesting that the source was entering a quiescent period.
dc.descriptionProceedings of the 363. WE-Heraeus Seminar on: Neutron Stars and Pulsars (Posters and contributed talks) Physikzentrum Bad Honnef, Germany, May.14-19, 2006, eds. W.Becker, H.H.Huang
dc.identifierhttps://arxiv.org/abs/astro-ph/0612787
dc.identifierhttp://arxiv.org/abs/astro-ph/0612787
dc.identifierAstrophys.SpaceSci.308:33-37,2007
dc.identifierdoi:10.1007/s10509-007-9300-7
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/180160
dc.subjectAstrophysics
dc.titleLong term spectral variability in the soft gamma ray repeater SGR 1900+14
dc.typetext

Files

Collections

arXiv