X-ray scanning a supergiant wind-accretor: eclipse egress in Vela X-1

Details X-ray scanning a supergiant wind-accretor: eclipse egress in Vela X-1 X-ray scanning a supergiant wind-accretor: eclipse egress in Vela X-1

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop..231k&link_type=abstract

XMM-Newton Proposal ID #04064301

Physics

White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, Vela X-1, Xmm-Newton Proposal 04064301

Scientific paper

We propose to use one XMM-Newton orbit observing the eclipse egress and early post-eclipse phase of the Vela~X-1/HD~77581 binary system. We plan to use EPIC-pn CCD spectra and pulse profiles together with RGS results for emission lines in order to study in unprecedented detail the emerging neutron star's emission and measure the scale height of the supergiant's extended atmosphere with high accuracy. Small time scale variations in the observed column density will track clumps in the lower stellar wind.

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