Hemphill, Paul B. https://orcid.org/0000-0002-1676-6954
Rothschild, Richard E.
Cheatham, Diana M.
Fürst, Felix https://orcid.org/0000-0003-0388-0560
Kretschmar, Peter https://orcid.org/0000-0001-9840-2048
Kühnel, Matthias
Pottschmidt, Katja
Staubert, Rüdiger
Wilms, Jörn https://orcid.org/0000-0003-2065-5410
Wolff, Michael T. https://orcid.org/0000-0002-4013-5650
Funding for this research was provided by:
NASA (NNX17AC33G)
Article Title: The First NuSTAR Observation of 4U 1538–522: Updated Orbital Ephemeris and a Strengthened Case for an Evolving Cyclotron Line Energy
Journal Title: The Astrophysical Journal
Article Type: paper
Copyright Information: © 2019. The American Astronomical Society. All rights reserved.
Publication dates
Date Received: 2018-12-18
Date Accepted: 2019-01-30
Online publication date: 2019-03-05