Why is the “Time Delay Controversy in Q0957+561 not yet Decided”?

  • V. L. Oknyanskij
Conference paper
Part of the International Astronomical Union / Union Astronomique Internationale book series (IAUS, volume 173)


The time delay in Q0957+561 remains indeterminate due to differences between statistical methods, irregular data spacings, and (possibly) microlensing.


Time Delay Light Curve Time Shift Light Curf Delay Analysis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Beskin, G.M., & Oknyanskij, V.L., 1992, in Gravitational Lenses, eds. R. Kayser, T. Schramm & L. Nieser, (Berlin: Springer-Verlag) 67CrossRefGoogle Scholar
  2. Beskin, G.M., & Oknyanskij, V.L. 1995, A&A in pressGoogle Scholar
  3. Falco, E.E., Wambsganss, J., & Schneider P., 1991, MNRAS, 251, 698ADSGoogle Scholar
  4. Oknyanskij, V.L., 1994, Astrophys & Space Sci, 222, 157ADSCrossRefGoogle Scholar
  5. Pelt, J. et al., 1994, A&A, 256, 775ADSGoogle Scholar
  6. Pelt, J. et al., 1995, A&A in pressGoogle Scholar
  7. Schild R.E., Cholfin, B., 1986, ApJ, 300, 209ADSCrossRefGoogle Scholar
  8. Schild, R.E., 1990, AJ, 100, 1771ADSCrossRefGoogle Scholar
  9. Schild, R.E., & Thomson D.J., 1994, AJ in pressGoogle Scholar
  10. Vanderriest, C., Schneider, J., Herpe, G., et al., 1989, A&A, 215, 1ADSGoogle Scholar

Copyright information

© International Astronomical Union 1996

Authors and Affiliations

  • V. L. Oknyanskij
    • 1
  1. 1.Sternberg Astronomical Ins.MoscowRussia

Personalised recommendations