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earth and planetary sciences

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

Astrophysical Journal, Volume 927, No. 2, Article 139, Year 2022

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.

O'Connor, Brendan M.
1. United States, Washington, D.c. The George Washington University
2. United States, College Park University of Maryland, College Park
3. United States, Greenbelt Nasa Goddard Space Flight Center
Göĝüş, Ersin
1. Turkey, Tuzla Sabancı Üniversitesi
Huppenkothen, Daniela
1. Netherlands, Utrecht Sron Netherlands Institute for Space Research
Kouveliotou, Chryssa K.
1. United States, Washington, D.c. The George Washington University
Gorgone, Nicholas M.
1. United States, Washington, D.c. The George Washington University
Townsend, Lee J.
1. South Africa, Cape Town South African Astronomical Observatory
Calamida, A.
1. United States, Baltimore Space Telescope Science Institute
Fruchter, Andrew S.
1. United States, Baltimore Space Telescope Science Institute
Buckley, David A.H.
1. South Africa, Cape Town South African Astronomical Observatory
2. South Africa, Cape Town University of Cape Town
Baring, Matthew G.
1. United States, Houston Rice University
Kennea, Jamie A.
1. United States, University Park Pennsylvania State University
Younes, George A.
1. United States, Washington, D.c. The George Washington University
Arzoumanian, Zaven
1. United States, Greenbelt Nasa Goddard Space Flight Center
Bellm, Eric C.
1. United States, Seattle University of Washington
Cenko, Stephen Bradley
1. United States, Greenbelt Nasa Goddard Space Flight Center
2. United States, College Park University of Maryland, College Park
Gendreau, Keith C.
1. United States, Greenbelt Nasa Goddard Space Flight Center
Granot, Jonathan
1. United States, Washington, D.c. The George Washington University
2. Israel, Tel Aviv-yafo Open University of Israel
Hailey, Charles J.
1. United States, New York Columbia University
Harrison, Fiona A.
1. United States, Pasadena California Institute of Technology
Hartmann, Dieter H.
1. United States, Clemson Clemson University
Kaper, Lex 9.
1. Netherlands, Amsterdam Universiteit Van Amsterdam
Kutyrev, Alexander S.
1. United States, College Park University of Maryland, College Park
2. United States, Greenbelt Nasa Goddard Space Flight Center
Slane, Patrick O.
1. United States, Cambridge Harvard-smithsonian Center for Astrophysics
Stern, Daniel K.
1. United States, Pasadena Jet Propulsion Laboratory
Troja, Eleonora
1. United States, College Park University of Maryland, College Park
2. United States, Greenbelt Nasa Goddard Space Flight Center
van der Horst, Alexander J.
1. United States, Washington, D.c. The George Washington University
Wijers, Ralph A.M.J.
1. Netherlands, Amsterdam Anton Pannekoek Instituut Voor Sterrenkunde
Woudt, P. A.
1. South Africa, Cape Town University of Cape Town

AFRICAN RESEARCH NEXUS

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

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AFRICAN RESEARCH NEXUS

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

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Authors & Co-Authors

Disclaimer

African Research Nexus

Useful Links