Hydrodynamical Simulation of the Structure of the X-Ray Pulsar Accretion Channel: Accounting for Resonant Scattering

Cover Page

Cite item

Full Text

Open Access Open Access
Restricted Access Access granted
Restricted Access Subscription Access

Abstract

A self-consistent radiation-hydrodynamics model of an accretion channel of subcritical X-ray pulsars is constructed. The influence of the presence of resonance in the scattering cross-section on the accretion process and radiation transfer is taken into account. It is shown that the efficiency of plasma deceleration by radiation depends on the magnitude of the magnetic field B. For B = 1.7 × 1012 G, the spectra and the degree of linear polarization of the radiation of the accretion channel are constructed. In the obtained spectra, the shape of the cyclotron line depends on the direction of the outgoing radiation. The
calculated linear polarization degree of the outgoing radiation is  30−40% near the cyclotron resonance, whereas it can be small (5−10%) at energies significantly lower than the resonant one.

About the authors

I. D. Markozov

Ioffe Institute, Saint Petersburg, Russia

Email: markozoviv@mail.ru
Россия, Санкт-Петербург

A. D. Kaminker

Ioffe Institute, Saint Petersburg, Russia

Email: markozoviv@mail.ru
Россия, Санкт-Петербург

A. Yu. Potekhin

Ioffe Institute, Saint Petersburg, Russia

Author for correspondence.
Email: markozoviv@mail.ru
Россия, Санкт-Петербург

References

  1. Аболмасов, Липунова (P.K. Abolmasov and G.V. Lipunova), MNRAS 524, 4148 (2023).
  2. Баско, Сюняев (M.M. Basko and R.A. Sunyaev), MNRAS 175, 395 (1976).
  3. Гинзбург В.Л., Распространение электромагнитных волн в плазме, 2-е изд. (М.: Наука, 1967).
  4. Гнедин Ю.Н., Павлов Г.Г., ЖЭТФ 65, 1806 (1973).
  5. Гнедин, Сюняев (Yu.N. Gnedin and R.A. Sunyaev), Astron. Astrophys. 36, 379 (1974).
  6. Горностаев (M.I. Gornostaev), MNRAS 501, 564 (2021).
  7. Дэвидсон (K. Davidson), Nature Phys. Sci. 246, 1 (1973).
  8. Каминкер и др. (A.D. Kaminker, G.G. Pavlov, and Iu.A. Shibanov), Astrophys. Space Sci. 86, 249 (1982).
  9. Кастор (J.I. Castor), Radiation Hydrodynamics (Cambridge, UK: Cambridge Univ. Press, 2004), p. 85.
  10. Килафис и др. (N.D. Kylafis, J.E. Trümper, and N.A. Loudas), Astron. Astrophys. 655, A39 (2021).
  11. Кирк (J.G. Kirk), Proc. Astron. Soc. Australia 5, 446 (1984).
  12. Клейн, Аронс (R.I. Klein and J. Arons), Proceed. 23rd ESLAB Symposium on Two Topics in X-Ray Astronomy, Ed. J. Hunt and B. Battrick (Noordwijk: ESA Publ. Division, 1989), p. 89.
  13. Колелла, Вудворд (P. Colella and P.R. Woodward), J. Comput. Phys. 54, 174 (1984).
  14. Меcарош (P. Mészáros), High-Energy Radiation from Magnetized Neutron Stars (Chicago: Univ. Chicago Press, 1992).
  15. Муштуков, Цыганков (A. Mushtukov and S. Tsygankov), arXiv:2204.14185 (2022).
  16. Муштуков и др. (A.A. Mushtukov, V.F. Suleimanov, S.S. Tsygankov, and J. Poutanen), MNRAS 454, 2539 (2015).
  17. Муштуков и др. (A.A. Mushtukov, I.D. Markozov, V.F. Suleimanov, D.I. Nagirner, A.D. Kaminker, A.Y. Potekhin, and S. Portegies Zwart), Phys. Rev. D 105, 103027 (2022).
  18. Павлов, Гнедин (G.G. Pavlov and Yu.N. Gnedin), Sov. Sci. Rev. E: Astrophys. Space Phys. 3, 197 (1984).
  19. Потехин, Лай (A.Y. Potekhin and D. Lai), MNRAS 376, 793 (2007).
  20. Поутанен и др. (J. Poutanen, A.A. Mushtukov, V.F. Suleimanov, S.S. Tsygankov, D.I. Nagirner, V. Doroshenko, and A.A. Lutovinov), Astrophys. J. 777, 115 (2013).
  21. Соболев В.В., Курс теоретической астрофизики, 3-е изд. (М.: Наука, 1985).
  22. Соколов А.А., Тернов И.М., Релятивистский электрон (М.: Наука, 1974).
  23. Уэст и др. (B.F. West, K.D. Wolfram, and P.A. Becker), Astrophys. J. 835, 129 (2017а).
  24. Уэст и др. (B.F. West, K.D. Wolfram, and P.A. Becker), Astrophys. J. 835, 130 (2017б).
  25. Херольд (H. Herold), Phys. Rev. D 19, 2868 (1979)
  26. Шварм и др. (F.-W. Schwarm, R. Ballhausen, S. Falkner, G. Schönherr, K. Pottschmidt, M.T. Wolff, P.A. Becker, F. Fürst, et al.), Astron. Astrophys. 601, A99 (2017).
  27. Шэн и др. (Xin Sheng, Lizhong Zhang, Omer Blaes, and Yan-Fei Jiang), MNRAS 524, 2431 (2023).

Supplementary files

Supplementary Files
Action
1. JATS XML
Download

Copyright (c) 2023 Pleiades Publishing, Ltd.