Inversion of the decay of the cyclotron line energy in Hercules X-1
Staubert R, Klochkov D, Fuerst F, Wilms J, Rothschild RE, Harrison F (2017)
Publication Status: Published
Publication Type: Journal article
Publication year: 2017
Journal
Publisher: EDP SCIENCES S A
Book Volume: 606
Article Number: ARTN L13
DOI: 10.1051/0004-6361/201731927
Abstract
Recent observations of Her X-1 with NuSTAR and INTEGRAL in 2016 have provided evidence that the 20-year decay of the cyclotron line energy found between 1996 and 2015 has ended and that an inversion with a new increase, possibly similar to the one observed around 1990-1993, has started. We consider this a strong motivation for further observations and for enhanced efforts to significantly improve our theoretical understanding of the accretion process in binary X-ray pulsars. We speculate about the physics behind the long-term decay and its inversion, a possible cyclic behavior, and correlations with other variable observables.
Authors with CRIS profile
Involved external institutions
European Space Agency (ESA)
France (FR)
Eberhard Karls Universität Tübingen
Germany (DE)
California Institute of Technology (Caltech)
United States (USA) (US)
University of California, San Diego
United States (USA) (US)
France (FR)
Eberhard Karls Universität Tübingen
Germany (DE)
California Institute of Technology (Caltech)
United States (USA) (US)
University of California, San Diego
United States (USA) (US)
How to cite
APA:
Staubert, R., Klochkov, D., Fuerst, F., Wilms, J., Rothschild, R.E., & Harrison, F. (2017). Inversion of the decay of the cyclotron line energy in Hercules X-1. Astronomy & Astrophysics, 606. https://doi.org/10.1051/0004-6361/201731927
MLA:
Staubert, R., et al. "Inversion of the decay of the cyclotron line energy in Hercules X-1." Astronomy & Astrophysics 606 (2017).
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