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. Hartmann
  • L. Kaper, A. Kutyrev, P. O. Slane, D. Stern, E. Troja, A. J. Van Der Horst, R. A.M.J. Wijers, P. Woudt

نتاج البحث: نشر في مجلةمقالةمراجعة النظراء

ملخص

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.

اللغة الأصليةالإنجليزيّة
رقم المقال139
دوريةAstrophysical Journal
مستوى الصوت927
رقم الإصدار2
المعرِّفات الرقمية للأشياء
حالة النشرنُشِر - 1 مارس 2022

ملاحظة ببليوغرافية

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

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