XMM-Newton Proposal 02053501

Details XMM-Newton Proposal 02053501 XMM-Newton Proposal 02053501

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003xmm..prop..282m&link_type=abstract

XMM-Newton Proposal ID #02053501

Physics

Sgr 1806-20, Xmm-Newton Proposal 02053501

Scientific paper

Soft gamma-ray repeaters are believed to contain magnetars: young neutron stars with extremely high magnetic fields (10^14-10^15 G), which shine as persistent and, occasionally, bursting sources of high-energy radiation by virtue of the release of magnetic energy. For these magnetic fields strengths, proton cyclotron features are expected to lie in the X-ray band. Recently, an absorption feature at 5 keV has been seen in several bursts from SGR 1806-20 with RXTE. We propose here to search for proton cyclotron features in its quiescent X-ray spectrum, by exploiting the unique characteristics of EPIC.This program was granted 50 ks in AO2. The observation was performed during a period of very high background, resulting in a useful exposure of only 5 ks, which is not sufficient for our purpose.

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