Testing Accretion Disk Theory in Black Hole X-Ray Binaries

摘要: WepresentresultsfromspectralmodelingofthreeblackholeX-raybinaries:LMCX-3,GROJ1655� 40,andXTE J1550� 564. Using a sample of disk-dominated observations, we fit the data with range spectral models that in- cludes simple multitemperature blackbody (DISKBB), relativistic accretion disk model based on color-corrected blackbodies (KERRBB), and non-LTE atmosphere within anprescription (BHSPEC). BHSPEC provides best for BeppoSAXobservation LMC X-3, which has broadest energy coverage our sample. It also multiple epochs Rossi X-Ray Timing Explorer (RXTE) in this source, except at very highest luminosity (L/LEdd k0:7), where additional physics must be coming into play.BHSPECisalsothebest-fitmodelformultiepochRXTEobservationsofGROJ1655� 40andXTEJ1550� 564, although best-fit inclination inner differs from binary inclination. All fits prefer � ¼ 0:01 to 0:1, apparent disagreement large stresses inferred rapid rise times observed outbursts these two sources. In all three sources imply moderate black hole spins (a� 0:1 0:8), but is sensitive reliability independent measurements system parameters physical assumptions un- derly models. Subject headingg accretion, disks — X-rays: binaries