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Identification of an Extended Accretion Disk Corona in the Hercules X-1 Low State: Moderate Optical Depth, Precise Density Determination, and Verification of CNO Abundances
Mario A. Jimenez-Garate, John C. Raymond, Duane A. Liedahl +1
We identify an accretion disk atmosphere and corona from the high resolution X-ray spectrum of Hercules X-1, and we determine its detailed physical properties. More than two dozen…
Detailed spectral analysis of the 260 ksec XMM-Newton data of 1E1207.4-5209 and significance of a 2.1 keV absorption feature
Kaya Mori, James C. Chonko, Charles J. Hailey
We have reanalyzed the 260 ksec XMM-Newton observation of 1E1207.4-5209. There are several significant improvements over previous work. Firstly, a much broader range of physically…
XMM-Newton EPIC & OM observations of Her X-1 over the 35 day beat period
Silvia Zane, Gavin Ramsay, Mario A. Jimenez-Garate +2
We present the results of a series of XMM-Newton EPIC and OM observations of Her X-1, spread over a wide range of the 35 day precession period. We confirm that the spin modulation…