SGR 1806-20 about two years after the giant flare: Suzaku, XMM-Newton and INTEGRAL observations

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dc.creatorEsposito, P.
dc.creatorMereghetti, S.
dc.creatorTiengo, A.
dc.creatorZane, S.
dc.creatorTurolla, R.
dc.creatorGotz, D.
dc.creatorRea, N.
dc.creatorKawai, N.
dc.creatorUeno, M.
dc.creatorIsrael, G. L.
dc.creatorStella, L.
dc.creatorFeroci, M.
dc.date2007-10-15
dc.date.accessioned2026-07-07T12:44:29Z
dc.date.available2026-07-07T12:44:29Z
dc.descriptionIn December 2004, the soft gamma-ray repeater SGR 1806-20 emitted the most powerful giant flare ever observed. This probably involved a large-scale rearrangement of the magnetosphere leading to observable variations in the properties of its X-ray emission. Here we present the results of the first Suzaku observation of SGR 1806-20, together with almost simultaneous observations with XMM-Newton and INTEGRAL. The source seems to have reached a state characterized by a flux close to the pre-flare level and by a relatively soft spectrum. Despite this, SGR 1806-20 remained quite active also after the giant flare, allowing us to study several short bursts observed by Suzaku in the 1-100 keV range. We discuss the broad-band spectral properties of SGR 1806-20, covering both persistent and bursting emission, in the context of the magnetar model, and consider its recent theoretical developments.
dc.descriptionAccepted for publication in Astronomy & Astrophysics
dc.identifierhttps://arxiv.org/abs/0710.2789
dc.identifierhttp://arxiv.org/abs/0710.2789
dc.identifierAstronomy and Astrophysics, Volume 476, Issue 1, December II 2007, pp.321-330
dc.identifierdoi:10.1051/0004-6361:20078562
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/220784
dc.subjectAstrophysics
dc.titleSGR 1806-20 about two years after the giant flare: Suzaku, XMM-Newton and INTEGRAL observations
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