Continuous monitoring of pulse period variations in Hercules X-1 using Swift/BAT

Authors: D. Klochkov, R. Staubert, K. Postnov, N. Shakura and A. Santangelo
A&A 506, 1261 (2009) Received 30 June 2009 / Accepted 30 July 2009
Keywords: X-rays: binaries, stars: neutron, accretion, accretion disks

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