Testing Strong Gravity in Black Holes with XMM-Newton

Physics

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White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, Black Hole Tran, Xmm-Newton Proposal Id #05541101

Scientific paper

We propose two 20ksec long Target of Opportunity observations on a bright (more than 200mCrab) black hole transient in outburst, to study the relativistic Fe Kalpha line profile and its variability in such systems and to perform X-ray timing studies. Fe lines probe the innermost regions of accretion disks where the gravitational field is the most intense. To obtain a maximum signal to noise ratio in the line, these observations will be using the modified timing mode of the EPIC-pn cameras, recently employed successfully in observations of the relativistic line of Cygnus X-1. The accurate measurement of the line shape will then lead to constraints on the black hole spin.

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