Issues

 / 

2019

 / 

November

  

Conferences and symposia


On the nature of ultraluminous X-ray sources

 a,  b,  a
a Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, Zelenchukskiy Region, Karachai-Cherkessian Republic, Russian Federation
b Lomonosov Moscow State University, Shternberg State Astronomical Institute, Universitetskii prosp. 13, Moscow, 119889, Russian Federation

Ultraluminous X-ray sources (ULXs) that are located in external galaxies exhibit X-ray luminosities exceeding hundreds or even thousands times those of the brightest black holes in Milky Way and Local Group galaxies. New classes of objects have been discovered: ultraluminous X-ray pulsars (ULXPs) and high-velocity outflows whose X-ray-range speed is up to 0.2 c. The ULXs and ULXPs fully correspond to concepts of the super-Eddington accretion. Five ULXs exhibit in the X-range power spectra quasi-periodical oscillations and a flat-topped noise. Optical spectra of the ULXs are very similar to those of SS433, late nitrogen stars (WNL/WR) or LBV stars (luminous blue variables). The results obtained suggest that the ULXs are the systems that contain supercritical accretion disks.

Fulltext is available at IOP
Keywords: ultraluminous X-ray sources, optical spectroscopy, X-ray data, quasi-periodical oscillations
PACS: 97.60.Gb, 97.80.Jp, 98.70.Qy (all)
DOI: 10.3367/UFNe.2019.04.038595
URL: https://ufn.ru/en/articles/2019/11/g/
Citation: Fabrika S N, Atapin K E, Vinokurov A S "On the nature of ultraluminous X-ray sources" Phys. Usp. 62 1162–1169 (2019)
BibTexBibNote ® (generic)BibNote ® (RIS)MedlineRefWorks

Received: 18th, June 2019, 3rd, April 2019

Оригинал: Фабрика С Н, Атапин К Е, Винокуров А С «О природе ультраярких рентгеновских источников» УФН 189 1240–1248 (2019); DOI: 10.3367/UFNr.2019.04.038595

References (55) Cited by (1) Similar articles (20) ↓

  1. M.R. Gilfanov “X-ray binaries and star formation56 714–722 (2013)
  2. A.M. Cherepashchuk “Observing stellar mass and supermassive black holes59 702–712 (2016)
  3. N.I. Shakura, D.A. Kolesnikov et alAccretion processes in astrophysics62 1126–1135 (2019)
  4. Advances in astronomy (Scientific session of the Physical Sciences Division of the Russian Academy of Sciences, 27 February 2013)56 704–737 (2013)
  5. I.D. Novikov, I.D. Karachentsev et alScientific session of the Division of General Physics and Astronomy of the Russian Academy of Sciences (28 February, 2001)44 817–818 (2001)
  6. Ya.B. Zel’dovich “Neutron Stars and ’Black Holes’16 559–561 (1974)
  7. D.G. Yakovlev “Superfluidity in neutron stars44 823–826 (2001)
  8. D.V. Bisikalo, A.G. Zhilkin, E.P. Kurbatov “Possible electromagnetic manifestations of merging black holes62 1136–1152 (2019)
  9. V.M. Lipunov “Astrophysical sense of the discovery of gravitational waves59 918–928 (2016)
  10. V.A. Simonenko “Nuclear explosions as a probing tool for high-intensity processes and extreme states of matter: some applications of results49 861–871 (2006)
  11. A.M. Cherepashchuk “Searches for black holes: the recent data44 821–823 (2001)
  12. K.A. Postnov, A.G. Kuranov, N.A. Mitichkin “Spins of black holes in coalescing compact binaries62 1153–1161 (2019)
  13. Extending the event horizon: multimessenger astronomy (Scientific session of the Physical Sciences Division of the Russian Academy of Sciences, 3 April 2019)62 1125–1125 (2019)
  14. D.A. Kirzhnits “Pulsars and rotation of a superfluid liquid38 791–792 (1995)
  15. T.V. Shabanova “Discovery of a planetary system around PSR 0329+5437 618–621 (1994)
  16. A.M. Cherepashchuk “Discovery of gravitational waves: a new chapter in black hole studies59 910–917 (2016)
  17. L.M. Erukhimov “Oscillations of Pulsar Radio Emission12 806–807 (1970)
  18. V.D. Kuznetsov, V.V. Zaitsev et alJoint scientific session of the Physical Sciences Division of the Russian Academy of Sciences and the Joint Physical Society of the Russian Federation (30 November 2005)49 305–311 (2006)
  19. A.D. Kuz’min “The pulsar time scale31 881–882 (1988)
  20. E.A. Mamidzhanyan, S.I. Nikol’skii “Possibility of experimental ultrahigh-energy gamma-ray astronomy30 542–543 (1987)

The list is formed automatically.

© 1918–2022 Uspekhi Fizicheskikh Nauk
Email: ufn@ufn.ru Editorial office contacts About the journal Terms and conditions