The Optical Gravitational Lensing Experiment. Optical Monitoring of the Gravitationally Lensed Quasar HE1104-1805 in 1997-2002

Details The Optical Gravitational Lensing Experiment. Optical Monitoring of the Gravitationally Lensed Quasar HE1104-1805 in 1997-2002 The Optical Gravitational Lensing Experiment. Optical Monitoring of the Gravitationally Lensed Quasar HE1104-1805 in 1997-2002

2003-10-27

arxiv.org/abs/astro-ph/0310752v1

Acta Astron. 53 (2003) 229

Astronomy and Astrophysics

Astrophysics

13 pages. Photometry of HE1104-1805 available from the OGLE Internet archive: ftp://ftp.astrouw.edu.pl/ogle/ogle2/HE1104/ or i

Scientific paper

We present results of the long term monitoring of the gravitationally lensed quasar HE1104-1805. The photometric data were collected between August 1997 and January 2002 as a subproject of the OGLE survey. We determine the time delay in the light curves of images A and B of HE1104-1805 to be equal to 157+/-21 days with the variability in the image B light curve leading variability of the image A. The result is in excellent agreement with the earlier determination by Ofek and Maoz. OGLE photometry of HE1104-1805 is available to the astronomical community from the OGLE Internet archive.

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