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Walton (1), Eric C. Bellm (1), Felix Fuerst (1), Finn E. Christensen (6), Fiona Harrison (1), Jerome Chenevez (6), Joern Wilms (12), John A. Tomsick (3), Katja Pottschmidt (9, Kristin K. Madsen (1), Matteo Bachetti (4, NASA Goddard Space Flight Center (10) Center for Space Science, National Space InstituteLynby, Ruediger Staubert (2), Steven E. Boggs (3), Technology, Universitaat Tuebingen (IAAT)(3) Space Sciences Laboratory, University of California (4) Universite de Toulouse, University of Maryland Baltimore County (11) Jet Propulsion Laboratory, UPS-OMP (5) CNRS; Institut de Recherche en Astrophysique et Planetologie (6) DTU Space, William W. Craig (3, William Zhang (10) ((1) Cahill Center for Astronomy","submitted_at":"2013-09-20T19:59:57Z","abstract_excerpt":"Her X-1, one of the brightest and best studied X-ray binaries, shows a cyclotron resonant scattering feature (CRSF) near 37 keV. 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