Long term monitoring of SGR 1806-20 after the Giant Flare

SGR 180620 has recently emitted the most powerful Giant Flare ever observedfrom a Soft Gammaray Repeater. This involved a large scale restructuring of themagnetosphere leading to observable variations in the properties of itspersistent Xray emission. Comparison of the preflare XMMNewton observationswith two recent TOO pointings support a magnetar scenario in which the effectsof a twisted magnetosphere are considered. We propose to continue the monitoringof SGR 180620 to study the long term effects of the Giant Flare and how thesource evolves toward quiescence after this onceinalifetime event. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]