Investigating the soft spectral component in the quiescent X-ray binary CenX-4

Details Investigating the soft spectral component in the quiescent X-ray binary CenX-4 Investigating the soft spectral component in the quiescent X-ray binary CenX-4

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008xmm..prop...37j&link_type=abstract

XMM-Newton Proposal ID #06015201

Computer Science

White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, Cen X-4

Scientific paper

We propose a long observation of the neutron star X-ray transient Cen X-4 in quiescence. The goal is to use the RGS spectrum to constrain the interstellar extinction to the source. This removes this parameter from the X-ray spectral fitting of the pn and MOS spectra and allows us to investigate whether the variability observed in the quiescent X-ray spectrum of this source is due to variations in the soft thermal spectral component or variations in the power law spectral component coupled with variations in N_H. This will test whether the soft thermal spectral component can indeed be due to the hot thermal glow of the neutron star.

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