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arxiv astro-ph/0103146 v1 pith:ENOQI476 submitted 2001-03-09 astro-ph

'Round the Clock Observations of the Q0957+561 A,B Gravitationally Lensed Quasar

classification astro-ph
keywords brightnesscampaigncurvegravitationallyimagelensedq0957quasar
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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.

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