XMM-Newton Proposal 03040501

Details XMM-Newton Proposal 03040501 XMM-Newton Proposal 03040501

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004xmm..prop..144k&link_type=abstract

XMM-Newton Proposal ID #03040501

Physics

White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, R Aqr, Xmm-Newton Proposal 03040501

Scientific paper

R Aqr: a white dwarf and a Mira red giant is ejecting jets in optical, radio and x-rays. The 35 arc sec x-ray jets appear to be evolving towards thermal equilibrium, based on Chandra data over 3.3 y. Peaks are seen at about the energies of C V, C VI, N VII & O VII: evolved material from the WD or from the Mira, but if so, where's the Si? Are photons, fast particles, or bulk motion -- a shock -- exciting these jets? A hard, variable point source at the central binary is enigmatic -- Fe K alpha 6.4 keV (reflection? What excites it?) plus emission over several keV above and below 6.4 (lines, or even a doppler continuum?). EPIC can provide enough detected photons in a reasonable observing time to illuminate these questions, and RGS can identify the lines.

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