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On the nature of the 35-day cycle in the X-ray binary Her X-1/HZ Her

Published online by Cambridge University Press:  30 December 2019

N. Shakura ,
D. Kolesnikov ,
K. Postnov ,
I. Volkov ,
I. Bikmaev ,
T. Irsmambetova ,
R. Staubert ,
J. Wilms ,
E. Irtuganov  and
P. Shurygin
...Show all authors
N. Shakura
Affiliation:
Sternberg Astronomical Institute, Moscow State University, 119234, Moscow, Russia email: nikolai.shakura@gmail.com Kazan Federal University, Kazan, Russia
D. Kolesnikov
Affiliation:
Sternberg Astronomical Institute, Moscow State University, 119234, Moscow, Russia email: nikolai.shakura@gmail.com
K. Postnov
Affiliation:
Sternberg Astronomical Institute, Moscow State University, 119234, Moscow, Russia email: nikolai.shakura@gmail.com Kazan Federal University, Kazan, Russia
I. Volkov
Affiliation:
Sternberg Astronomical Institute, Moscow State University, 119234, Moscow, Russia email: nikolai.shakura@gmail.com Institute of Astronomy RAS,Moscow, Russia
I. Bikmaev
Affiliation:
Kazan Federal University, Kazan, Russia
T. Irsmambetova
Affiliation:
Sternberg Astronomical Institute, Moscow State University, 119234, Moscow, Russia email: nikolai.shakura@gmail.com
R. Staubert
Affiliation:
Institute for Astronomy and Astrophysics, Tübingen, Germany
J. Wilms
Affiliation:
Astronomical Institute of the University of Erlangen-Nuremberg, Bamberg, Germany
E. Irtuganov
Affiliation:
Kazan Federal University, Kazan, Russia
P. Shurygin
Affiliation:
Kazan Federal University, Kazan, Russia
P. Golysheva
Affiliation:
Sternberg Astronomical Institute, Moscow State University, 119234, Moscow, Russia email: nikolai.shakura@gmail.com
S. Shugarov
Affiliation:
Sternberg Astronomical Institute, Moscow State University, 119234, Moscow, Russia email: nikolai.shakura@gmail.com Astronomical Institute of the Slovak Academy of Scienses, Tatranska Lomnica, Slovakia
I. Nikolenko
Affiliation:
Institute of Astronomy RAS,Moscow, Russia Crimean Astrophysical Observatory, Nauchny, Russia
E. Trunkovsky
Affiliation:
Sternberg Astronomical Institute, Moscow State University, 119234, Moscow, Russia email: nikolai.shakura@gmail.com
G. Schonherr
Affiliation:
Leibniz Institute for Astrophysics, Potsdam, Germany
A. Schwope
Affiliation:
Leibniz Institute for Astrophysics, Potsdam, Germany
D. Klochkov
Affiliation:
Institute for Astronomy and Astrophysics, Tübingen, Germany
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Abstract

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The X-ray binary Her X-1 consists of an accreting neutron star and the optical companion HZ Her. The 35-day X-ray variability of this system is known since its discovery in 1972 by the UHURU satellite and is believed to be caused by forced precession of the warped accretion disk tilted to the orbital plane. We argue that the observed features of the optical variability of HZ Her can be explained by free precession of the neutron star with a period close to that of the forced disk precession. The model parameters include a) the intensity (power) of the stream of matter flowing out of the optical star; b) the X-ray luminosity of the neutron star; c) the optical flux of the accretion disk; d) the X-ray irradiation pattern on the donor star; e) the tilt of the inner and outer edge of the accretion disk. A possible synchronization mechanism based on the coupling between the neutron star free precession and the dynamical action of non-stationary gas streams is discussed shortly.

Keywords

X-rays: binariesstars: neutronstars: binaries: close
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S346: High-mass X-ray Binaries: Illuminating the Passage from Massive Binaries to Merging Compact Objects , August 2018 , pp. 281 - 287
Copyright
© International Astronomical Union 2019 

References

Becker, R. H., Boldt, E. A., Holt, S. S., Pravdo, S. H., Rothschild, R. E., Serlemitsos, P. J., Smith, B. W. & Swank, J. H. 1977, ApJ, 214, 879 CrossRefGoogle Scholar
Boynton, P. E. 1987, in: Giacconi, R. & Ruffini, R. (eds.), Physics and Astrophysics of neutron stars and Black Holes (Amsterdam: North-Holland publ.), p. 227 Google Scholar
Boynton, P. E. et al. 1973, preprint of Seattle University Group Google Scholar
Brecher, K. 1972, Nature, 239, 325 CrossRefGoogle Scholar
Cherepashchuk, A. M., Efremov, Yu. N. , Kurochkin, N. E., Shakura, N. I. & Sunyaev, R. A. 1972, Commision of the IAU Information bulletin on variable stars, N720Google Scholar
Cherepashhuk, A. M., Kovalenko, V. M., Kovalenko, O. N. & Mironov, A. V. 1974, Peremennye zvezdy (in Russian), 19, 305 Google Scholar
Davidsen, A, Henry, J. P, Middleditch, J & Smith, H. E. 1972, ApJ, 177, L97 CrossRefGoogle Scholar
Davison, P. J. N. & Fabian, A. C. 1977, MNRAS, 178, 1P CrossRefGoogle Scholar
Deeter John, E., Scott, D. Matthew, Boynton Paul, E., Sigenori, Miyamoto, Shunji, Kitamoto, Shin’ichiro, Takahama & Fumiaki, Nagase 2005, ApJ, 502, 802 CrossRefGoogle Scholar
Gerend, D. & Boynton, P. E. 1976, ApJ, 209, 562 CrossRefGoogle Scholar
Gladyshev, S. A. 1985, PhD thesis (in Russian)Google Scholar
Goransky, V. P. & Karitskaya, E. A. 1986, unpublished (in Russian)Google Scholar
Grandi, S. A., Hintzen, P. M. N. O., Jensen, E. B., Rydgren, A. E., Scott, J. S., Stickney, P. M., Whelan, J. A. J. & Worden, S. P. 1974, ApJ, 190, 365 CrossRefGoogle Scholar
Katz, J. I. 1973, Nature Physical Science, 246, 87 CrossRefGoogle Scholar
Kilyachkov, N. N. & Shevchenko, V. S. 1978, Pis’ma v Astronomicheskii Zhurnal (in Russian), 4, 356 Google Scholar
Kilyachkov, N. N. & Shevchenko, V. S. 1980, Pis’ma v Astronomicheskii Zhurnal (in Russian), 6, 717 Google Scholar
Kilyachkov, N. N. & Shevchenko, V. S. 1988, Pis’ma v Astronomicheskii Zhurnal (in Russian), 14, 438 Google Scholar
Kilyachkov, N. N. 1994, Pis’ma v Astronomicheskii Zhurnal (in Russian), 20, 664 Google Scholar
Kippenhahn, R., Schmidt, H. U. & Thomas, H. C. 1980, A&A, 90, 54 Google Scholar
Klochkov, D. K., Shakura, N. I., Postnov, K. A., Staubert, R., Wilms, J. & Ketsaris, N. A. 2006, Astronomy Letters, 32, 804 CrossRefGoogle Scholar
Kuster, M., Wilms, J., Staubert, R., Heindl, W. A., Rothschild, R. E., Shakura, N. I. & Postnov, K. A. 2005, A&A, 443, 753 Google Scholar
Levine, A. M. & Jernigan, J. G. 1982, ApJ, 262, 294 CrossRefGoogle Scholar
Lipunov, V. M. & Shakura, N. I. 1976, Pis’ma v AZH (in Russian), 2, 343 Google Scholar
Lipunov, V. M., Semyonov, E. S. & Shakura, N. I. 1981, Astronomicheskij Zhurnal (in Russian), 58, 765 Google Scholar
Lipunov, V. M. 1987, Astrofizika nejtronnykh zvezd (Moscow: Nauka publ.)Google Scholar
Lyutyj, V. M. 1973, Peremennye zvezdy (in Russian), 18, 41 Google Scholar
Lyutyj, V. M. 1973, Astronomicheskij Zhurnal (in Russian), 50, 3 Google Scholar
Lyutyj, V.M. & Voloshina, I.B. 1989, Pis’ma v Astronomicheskii Zhurnal (in Russian), 15, 806 Google Scholar
Mironov, A. V., Moshkalev, V. G., Trunkovskij, E. M. & Cherepashhuk, A. M. 1986, Astronomicheskii Zhurnal (in Russian), 63, 113 Google Scholar
Panchenko, I. E. & Postnov, K. A. 1994, A&A, 286, 497 Google Scholar
Parmar, A. N., Sanford, P. W. & Fabian, A. C. 1980, MNRAS, 192, 311 CrossRefGoogle Scholar
Petro, L. & Hiltner, W. A. 1973, ApJ, 181, L93 CrossRefGoogle Scholar
Postnov, K., Shakura, N., Staubert, R., Kochetkova, A., Klochkov, D. & Wilms, J. 2013, MNRAS, 435, 1147 CrossRefGoogle Scholar
Scott, D. Matthew, Leahy Denis, A. & Wilson Robert, B. 2000, ApJ, 539, 392 CrossRefGoogle Scholar
Shakura, N. I., Ketsaris, N. A., Prokhorov, M. E. & Postnov, K. A. 1998, MNRAS, 300, 992 CrossRefGoogle Scholar
Shakura, N. I., Prokhorov, M. E., Postnov, K. A. & Ketsaris, N. A. 1999, A&A, 348, 917 Google Scholar
Shakura, N. I., Postnov, K. A. & Prokhorov, M. E. 1991, Soviet Astronomy Letters, 17, 339 Google Scholar
Staubert, R., Klochkov, D., Vasco, D., Postnov, K., Shakura, N., Wilms, J. & Rothschild, R. E. 2013, A&A, 550, 9 Google Scholar
Tananbaum, H., Gursky, H., Kellogg, E. M., Levinson, R., Schreier, E. & Giacconi, R. 1972, ApJ, 48, 143 CrossRefGoogle Scholar
Truemper, J., Kahabka, P., Oegelman, H., Pietsch, W. & Voges, W. 1986, ApJ, 300, L63 CrossRefGoogle Scholar
Voloshina, I. B, Luytyi, V. M & Sheffer, E. K 1990, Pis’ma v Astronomicheskii Zhurnal (in Russian), 16, 625 Google Scholar