Swift/XRT deep galactic plane survey discovery of a new intermediate polar cataclysmic variable, swift J183920.1-045350

Gorgone, Nicholas M. and Woudt, Patrick A. and Buckley, David and Mukai, Koji and Kouveliotou, Chryssa and Huppenkothen, Daniela and Göğüş, Ersin and Bellm, Eric and Linford, Justin D. and Van Der Horst, Alexander J. and Baring, Matthew G. and Hartmann, Dieter and Barrett, Paul and Cenko, Bradley and Graham, Melissa and Granot, Johnathan and Harrison, Fiona and Kennea, Jamie and O'Connor, Brendan M. and Potter, Stephen and Stern, Daniel and Slane, Patrick and Wijers, Ralph (2021) Swift/XRT deep galactic plane survey discovery of a new intermediate polar cataclysmic variable, swift J183920.1-045350. Astrophysical Journal, 923 (2). ISSN 0004-637X (Print) 1538-4357 (Online)

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We report on the Swift/XRT Deep Galactic Plane Survey discovery and multiwavelength follow-up observations of a new intermediate polar (IP) cataclysmic variable, Swift J183920.1-045350. A 449.7 s spin period is found in XMM-Newton and NuSTAR data, accompanied by a 459.9 s optical period that is most likely the synodic, or beat period, produced from a 5.6 hr orbital period. The orbital period is seen with moderate significance in independent long-baseline optical photometry observations taken with the ZTF and SAAO telescopes. We find that the X-ray pulse fraction of the source decreases with increasing energy. The X-ray spectra are consistent with the presence of an Fe emission line complex with both local and interstellar absorption. In the optical spectra, strong Hα, H i, He i, and He ii emission lines are observed, all common features in magnetic CVs. The source properties are thus typical of known IPs, with the exception of its estimated distance of kpc, which is larger than typical, extending the reach of the CV population in our Galaxy.
Item Type: Article
Divisions: Faculty of Engineering and Natural Sciences
Depositing User: Ersin Göğüş
Date Deposited: 25 Aug 2022 22:32
Last Modified: 25 Aug 2022 22:32
URI: https://research.sabanciuniv.edu/id/eprint/43958

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