Journal of Astrophysics and Astronomy

, Volume 23, Issue 1–2, pp 39–43 | Cite as

X-ray spectroscopy of Cygnus X-3

  • M. Choudhury
  • A. R. Rao


We have analysed the X-ray spectra of the highly variable X-ray source Cygnus X-3 over a wide energy range from 5 keV to 150 keV using data selected from the RXTE archives. Separate analysis of the low and hard states show the presence of a hard powerlaw tail in both the states. Here we present the result of the wide band spectral study of the source.

Key words

Binaries: close stars: individual: Cygnus X-3 X-rays: binaries 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Gierlinski, M., Zdziarski, A. A., Poutanen, J.,et al. 1999,MNRAS,309, 496.CrossRefADSGoogle Scholar
  2. Kitamoto. S., Kawashima, K., Negoro, H.,et al. 1994,PASJ,46, L105.ADSGoogle Scholar
  3. Nakamura H., Matsuoka, M., Kawai, al. 1993,MNRAS,261,. 353.ADSGoogle Scholar
  4. Prehedl, P., Burwitz, V., Paerels, al. 2000,A&A,357, L25.ADSGoogle Scholar
  5. Rajeev, M. R., Chitnis, V. R., Rao, A. al. 1994,Ap. J.,424, 376.CrossRefADSGoogle Scholar
  6. Sunyaev, R. A., Titarchuk, L. G. 1980,A&A,86, 121.ADSGoogle Scholar
  7. Vadawale, S. V., Rao, A. R., Chakrabarti, S. K. 2001,A&A,370, L17.CrossRefADSGoogle Scholar
  8. van Kerkwijk, M. H., Charles, P. A., Gebale, T. R.,et al. 1992,Nat,355, 703.CrossRefADSGoogle Scholar
  9. Watanabe, H., Kitamoto, S., Miyamoto, S.,et al. 1994,Ap. J.,433, 350.CrossRefADSGoogle Scholar
  10. Zdziarski, A. A., Grove, E., Poutanen, J.,et al. 2001,Ap. J.,554, L45.CrossRefADSGoogle Scholar

Copyright information

© Indian Academy of Sciences 2002

Authors and Affiliations

  • M. Choudhury
    • 1
  • A. R. Rao
    • 1
  1. 1.Tata Institute of Fundamental ResearchMumbaiIndia

Personalised recommendations