Characterization of the most highly-ionized absorbers in dipping LMXBs

Details Characterization of the most highly-ionized absorbers in dipping LMXBs Characterization of the most highly-ionized absorbers in dipping LMXBs

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop..205d&link_type=abstract

XMM-Newton Proposal ID #04055102

Computer Science

White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, Xb 1254-690, 4U 1746-371, Xmm-Newton Proposal 04055102

Scientific paper

We propose three 60 ksec and one 140 ks XMM-Newton observations of the dipping Low-Mass X-ray Binaries (LMXBs) XB 1254-690 and 4U 1746-371. We will obtain up to ~12 ks of dip data per 4U 1254-690 observation which will be sufficient to reliably measure the dip properties and the changes in the absorber, compared to the persistent emission. The 140 ks of the 4U 1746-12 observation, added to a previous 50 ks XMM-Newton observation on this source, will be enough to detect with high significance the Fe XXVI absorption feature seen in the previous observation at low confidence in the persistent emission and Fe XXV and/or Fe XXVI absorption features in the dipping emission. The significant detection of these lines will allow the absorber properties to be unambigously characterized.

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