A Robust Determination of the Time Delay in 0957+561A, B and a Measurement of the Global Value of Hubble's Constant

@article{Kundi1997ARD,
  title={A Robust Determination of the Time Delay in 0957+561A, B and a Measurement of the Global Value of Hubble's Constant},
  author={Tomislav Kundi{\'c} and Edwin Lewis Turner and Wesley N. Colley and J. Richard Gott III and James E. Rhoads and Yun Wang and Louis E. Bergeron and Karen A. Gloria and Daniel C. Long and Sangeeta Malhotra and Joachim Wambsganss},
  journal={The Astrophysical Journal},
  year={1997},
  volume={482},
  pages={75 - 82}
}
Continued photometric monitoring of the gravitational lens system 0957+561A, B in the g and r bands with the Apache Point Observatory (APO) 3.5 m telescope during 1996 shows a sharp g-band event in the trailing (B) image light curve at the precise time predicted in an earlier paper. The prediction was based on the observation of the event during 1995 in the leading (A) image and on a differential time delay of 415 days. This success confirms the so-called short delay, and the absence of any… 

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