Understanding Black Holes: Spin comma Disk and State Transition

Observations from XMMNewton and other Xray telescopes have shown howrelativistic disk lines, together with the thermal continuum, can be used toprecisely constrain the nature of the compact object in XRB systems, as well asthat of the accretion flow. The importance of XMMNewton in the study of blackhole binaries cannot be overemphasised; with a single 40ksec (total) XMMNewtonobservation of XTE J1752223 (AO9), we found that at least for thisspecific source state transition is not a manifestation of a change in theinner extent of the accretion disk; we confirmed the black hole nature of thecentral source; and constrained its dimensionless spin parameter. Here, wepropose to build on this success through a single 40ksec (total) ToO observation of a black hole transient in outburst. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]