The calm after the storm: XMM-Newton observation of SGR 1806–20 two months after the Giant Flare of 2004 December 27A. Tiengo, P. Esposito, S. Mereghetti, N. Rea, L. Stella, G. L. Israel, R. Turolla and S. ZaneA&A, 440 3 (2005) L63-L66DOI: https://doi.org/10.1051/0004-6361:200500170