Identification of an X-Ray Pulsar in the BeXRB System IGR J18219-1347

B. O'Connor, E. Göǧüş, D. Huppenkothen, C. Kouveliotou, N. Gorgone, L. J. Townsend, A. Calamida, A. Fruchter, D. A.H. Buckley, M. G. Baring, J. A. Kennea, G. Younes, Z. Arzoumanian, E. Bellm, S. B. Cenko, K. Gendreau, J. Granot, C. Hailey, F. Harrison, D. HartmannL. Kaper, A. Kutyrev, P. O. Slane, D. Stern, E. Troja, A. J. Van Der Horst, R. A.M.J. Wijers, P. Woudt

פרסום מחקרי: פרסום בכתב עתמאמרביקורת עמיתים


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.

שפה מקוריתאנגלית
מספר המאמר139
כתב עתAstrophysical Journal
מספר גיליון2
מזהי עצם דיגיטלי (DOIs)
סטטוס פרסוםפורסם - 1 מרץ 2022

הערה ביבליוגרפית

Publisher Copyright:
© 2022. The Author(s). Published by the American Astronomical Society.

טביעת אצבע

להלן מוצגים תחומי המחקר של הפרסום 'Identification of an X-Ray Pulsar in the BeXRB System IGR J18219-1347'. יחד הם יוצרים טביעת אצבע ייחודית.

פורמט ציטוט ביבליוגרפי