Around the Clock Observations of the Q0957+561A,B Gravitationally Lensed Quasar
- 20 January 2002
- journal article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 565 (1) , 105-107
- https://doi.org/10.1086/338135
Abstract
An observing campaign with 10 participating observatories has undertaken to monitor the optical brightness of the Q0957 gravitationally lensed quasar for 10 consecutive nights in January 2000. The resulting A image brightness curve has significant brightness fluctuations and makes a photometric prediction for the B image light curve for a second campaign planned for 12-21 March 2001. The ultimate purpose is to determine the gravitational lens time delay to a fraction of an hour, and to seek evidence for rapid microlensing.Comment: 8 pages, AASTeX 4.0, accepted by the Astrophysical JournaKeywords
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This publication has 8 references indexed in Scilit:
- Hourly Variability in Q0957+561The Astrophysical Journal, 2000
- Precision Photometry for Q0957+561 Images A and BThe Astrophysical Journal, 1999
- Microlensing Variability of the Gravitationally Lensed Quasar Q0957+561 A,BThe Astrophysical Journal, 1996
- CCD ensemble photometry on an inhomogeneous set of exposuresPublications of the Astronomical Society of the Pacific, 1992
- The time delay of gravitational lens 0957 + 561. I - Methodology and analysis of optical photometric data. II - Analysis of radio data and combined optical-radio analysisThe Astrophysical Journal, 1992
- Microlensing in the Q0957 + 561 gravitational mirageThe Astronomical Journal, 1991
- CCD camera brightness monitoring of Q0957 + 561 A, BThe Astrophysical Journal, 1986
- 0957 + 561 A, B: twin quasistellar objects or gravitational lens?Nature, 1979