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Titel: Two years of INTEGRAL monitoring of the soft gamma-ray repeater SGR 1806-20: from quiescence to frenzy
Type: Journal articleJournal article
Person(er):
Forfatter:  Gotz, D.
Technical University of Denmark

Forfatter:  Mereghetti, S.
Technical University of Denmark

Forfatter:  Molkov, S.
Technical University of Denmark

Forfatter:  Hurley, K.
Technical University of Denmark

Forfatter:  Mirabel, I.F.
Technical University of Denmark

Forfatter:  Sunyaev, R.
Technical University of Denmark

Forfatter:  Weidenspointner, G.
Technical University of Denmark

Forfatter:  Brandt, Søren (Cwisno: 38321)
Technical University of Denmark
Email:

Forfatter:  Del Santo, M.
Technical University of Denmark

Forfatter:  Feroci, M.
Technical University of Denmark

Forfatter:  Gogus, E.
Technical University of Denmark

Forfatter:  von Kienlin, A.
Technical University of Denmark

Forfatter:  van der Klis, M.
Technical University of Denmark

Forfatter:  Kouveliotou, C.
Technical University of Denmark

Forfatter:  Lund, Niels (Cwisno: 38305)
Technical University of Denmark
Email:

Forfatter:  Pizzichini, G.
Technical University of Denmark

Forfatter:  Ubertini, P.
Technical University of Denmark

Forfatter:  Winkler, C.
Technical University of Denmark

Forfatter:  Woods, P.M.
Technical University of Denmark
Uddrag: SGR 1806-20 has been observed for more than 2 years with the INTEGRAL satellite. In this period the source went from a quiescent state into a very active one culminating in a giant flare on December 27, 2004. Here we report on the properties of all the short bursts detected with INTEGRAL before the giant flare. We derive their number-intensity distribution and confirm the hardness-intensity correlation for the bursts found by Gotz et al. (2004a, A&A, 417, L45). Our sample includes a very bright outburst that occurred on October 5, 2004, during which over one hundred bursts were emitted in 10 minutes, involving an energy release of 3 x 1042 erg. We present a detailed analysis of it and discuss our results in the framework of the magnetar model.
Publiceret: in journal: Astronomy & Astrophysics (ISSN: 0004-6361), vol: 445, issue: 1, pages: 313-321, 2006
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