Inversion of the decay of the cyclotron line energy in Hercules X-1

Journal article


Publication Details

Author(s): Staubert R, Klochkov D, Fuerst F, Wilms J, Rothschild RE, Harrison F
Journal: Astronomy & Astrophysics
Publisher: EDP SCIENCES S A
Publication year: 2017
Volume: 606
ISSN: 1432-0746


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.


FAU Authors / FAU Editors

Wilms, Jörn Prof. Dr.
Professur für Astronomie und Astrophysik


External institutions with authors

California Institute of Technology (Caltech)
Eberhard Karls Universität Tübingen
European Space Agency (ESA)
University of California, San Diego


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://dx.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).

BibTeX: 

Last updated on 2019-07-06 at 11:08