Long term XMM-Newton and INTEGRAL monitoring of SGR1806-20 after the Giant Flare

Details Long term XMM-Newton and INTEGRAL monitoring of SGR1806-20 after the Giant Flare Long term XMM-Newton and INTEGRAL monitoring of SGR1806-20 after the Giant Flare

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009xmm..prop..153m&link_type=abstract

XMM-Newton Proposal ID #06542301

Computer Science

White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, Sgr 1806-20

Scientific paper

In December 2004 SGR 1806-20 emitted the most powerful giant flare ever observed from a Soft Gamma-ray Repeater. This probably involved a large scale rearrangement of the magnetosphere leading to observable variations in the properties of its persistent X-ray emission. Comparison of the pre- and post-flare observations supports the model of a magnetar with a twisted magnetosphere. We are studying the long term effects of the Giant Flare and the source evolution after this ``once-in-a-lifetime'' event with a long term XMM-Newton and INTEGRAL monitoring of SGR 1806-20. Based on the trend seen in the latest observations (performed every six months), we estimate that the sampling frequency can now be reduced and therefore, we require only a single pointing during AO9.

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