Joint XMM-Newton, Chandra, and RXTE Observations of Dips in Cyg X-1

Details Joint XMM-Newton, Chandra, and RXTE Observations of Dips in Cyg X-1 Joint XMM-Newton, Chandra, and RXTE Observations of Dips in Cyg X-1

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006xmm..prop...27w&link_type=abstract

XMM-Newton Proposal ID #05008801

Physics

White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, Cygnus X-1, Xmm-Newton Proposal 05008801

Scientific paper

At orbital phase zero (i.e., the O star secondary intervening our line of sight to the black hole primary), Cyg X-1 shows X-ray dips due to highly variable absorption in matter in the accretion stream. Studying the physics of these dips requires joint XMM/Chandra-HETGS/RXTE observations: XMM-Newton provides the crucially important spectral continuum through the broad Fe line region at CCD resolution and it achieves high signal-to-noise in the <2keV band, allowing the dipping events to be temporally resolved and spectrally modeled on short time scales. The simultaneous Chandra data provide high resolution spectroscopy of the dipping events (albeit at a lower time resolution compared to XMM-Newton), while RXTE provides the hard X-ray continuum out to >150keV.

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