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The Long Stare at Hercules X-1. I. Emission Lines from the Outer Disk, the Magnetosphere Boundary, and the Accretion Curtain

  • Authors: P. Kosec, E. Kara, A. C. Fabian, F. Fürst, C. Pinto, I. Psaradaki, C. S. Reynolds, D. Rogantini, D. J. Walton, R. Ballhausen, C. Canizares, S. Dyda, R. Staubert, J. Wilms

P. Kosec et al 2022 The Astrophysical Journal 936 .

  • Provider: AAS Journals

Caption: Figure 15.

EPIC pn 9–13 keV spectra of the Her X-1 High flux states from the three 2020 August XMM-Newton observations. The spectra are fitted with simple power-law models, and all show strong residuals around the instrumental Au M-edge (11.9 keV, blue dotted line), indicating a significant gain shift at these energies.

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