O'Connor, B. and Göğüş, Ersin and Huppenkothen, D. and Kouveliotou, C. and Gorgone, N. and Townsend, L. J. and Calamida, A. and Fruchter, A. and Buckley, D. A. H. and Baring, M. G. and Kennea, J. A. and Younes, G. and Arzoumanian, Z. and Bellm, E. and Cenko, S. B. and Gendreau, K. and Granot, J. and Hailey, C. and Harrison, F. and Hartmann, D. and Kaper, L. and Kutyrev, A. and Slane, P. O. and Stern, D. and Troja, E. and Van Der Horst, A. J. and Wijers, R. A. M. J. and Woudt, P. (2022) Identification of an X-Ray pulsar in the BeXRB system IGR J18219-1347. Astrophysical Journal, 927 (2). ISSN 0004-637X (Print) 1538-4357 (Online)
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Official URL: https://dx.doi.org/10.3847/1538-4357/ac5032
Abstract
We report on observations of the candidate Be/X-ray binary (BeXRB) IGR J18219-1347 with the Swift/X-ray Telescope, the Nuclear Spectroscopic Telescope ARray, and the Neutron Star Interior Composition Explorer during Type-I outbursts in 2020 March and June. Our timing analysis revealed the spin period of a neutron star with P spin = 52.46 s. This periodicity, combined with the known orbital period of 72.4 days, indicates that the system is a BeXRB. Furthermore, by comparing the spectral energy distribution of the infrared counterpart to that of known BeXRBs, we confirm this classification and set a distance of approximately 10-15 kpc for the source. The broadband X-ray spectrum (1.5-50 keV) of the source is described by an absorbed power law with a photon index Γ ∼0.5 and a cutoff energy at ∼13 keV.
| Item Type: | Article |
|---|---|
| Divisions: | Faculty of Engineering and Natural Sciences |
| Depositing User: | Ersin Göğüş |
| Date Deposited: | 23 Aug 2022 21:48 |
| Last Modified: | 23 Aug 2022 21:48 |
| URI: | https://research.sabanciuniv.edu/id/eprint/44072 |
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