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

Wesley N. Colley; Rudolph E. Schild; Cristina Abajas; David Alcalde; Zeki Aslan; Rafael Barrena; Vladimir Dudinov; Irek Khamitov; Kjetil Kjernsmo; Hyun Ju Lee; Jonghwan Lee; Myung Gyoon Lee; Javier Licandro; Dan Maoz; Evencio Mediavilla; Veronica Motta; Jose Munoz; Alex Oscoz; Miquel Serra-Ricart; Igor Sinelnikov; Rolf Stabell; Jan Teuber; Alexander Zheleznyak

doi:10.1086/338135

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arXiv · astro-ph/0103146

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

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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.

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Wesley N. Colley, Rudolph E. Schild, Cristina Abajas, David Alcalde, Zeki Aslan, Rafael Barrena, Vladimir Dudinov, Irek Khamitov, Kjetil Kjernsmo, Hyun Ju Lee, Jonghwan Lee, Myung Gyoon Lee, Javier Licandro, Dan Maoz, Evencio Mediavilla, Veronica Motta, Jose Munoz, Alex Oscoz, Miquel Serra-Ricart, Igor Sinelnikov, Rolf Stabell, Jan Teuber, Alexander Zheleznyak. 2001-03-09. 'Round the Clock Observations of the Q0957+561 A,B Gravitationally Lensed Quasar. https://doi.org/10.1086/338135

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