XMM-Newton Proposal 02039301

Details XMM-Newton Proposal 02039301 XMM-Newton Proposal 02039301

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003xmm..prop..210d&link_type=abstract

XMM-Newton Proposal ID #02039301

Physics

Sgrb2, Xmm-Newton Proposal 02039301

Scientific paper

We propose a 40 ks XMM-Newton observation of the molecular cloud Sgr B2 located in the Galactic Centre. Our aims are to map and characterize both the iron K line emission at 6.4 keV (line energy and linewidth) as well as its associated continuum (intensity and shape) to determine the nature of this emission: fluorescence due to irradiation by hard X-rays of molecular clouds or interaction of suprathermal electrons with the molecular gas and/or with the hot plasma at cloud boundaries ? This is a key issue for understanding the high energy diffuse emission from the Galactic Centre and Sgr B2 is the best location to carry out this study, as it exhibits the brightest 6.4 keV iron K line emission in the Galactic Centre, and the weakest diffuse thermal line emission.

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