SunPhot: Preparations for an Upcoming Quasar Variability Survey with the International Liquid Mirror Telescope
Ethen SunDepartment of Physics and Astronomy , University of British Columbia , 6224 Agricultural Road , Vancouver , BC V6T 1Z1 , CanadaBhavya AilawadhiAryabhatta Research Institute of Observational sciencES (ARIES) , Manora Peak , Nainital , 263001 , IndiaTalat AkhunovUlugh Beg Astronomical Institute of the Uzbek Academy of Sciences , Astronomicheskaya 33 , 100052 Tashkent , UzbekistanE. F. BorraDepartment of Physics , Université Laval , 2325 , rue de l'Université , Québec , G1V 0A6 , CanadaMonalisa DubeyAryabhatta Research Institute of Observational sciencES (ARIES) , Manora Peak , Nainital , 263001 , IndiaNaveen DukiyaAryabhatta Research Institute of Observational sciencES (ARIES) , Manora Peak , Nainital , 263001 , IndiaJiuyang FuDepartment of Physics and Astronomy , University of British Columbia , 6224 Agricultural Road , Vancouver , BC V6T 1Z1 , CanadaBaldeep GrewalDepartment of Physics and Astronomy , University of British Columbia , 6224 Agricultural Road , Vancouver , BC V6T 1Z1 , CanadaPaul HicksonDepartment of Physics and Astronomy , University of British Columbia , 6224 Agricultural Road , Vancouver , BC V6T 1Z1 , CanadaBrajesh KumarAryabhatta Research Institute of Observational sciencES (ARIES) , Manora Peak , Nainital , 263001 , IndiaKuntal MisraAryabhatta Research Institute of Observational sciencES (ARIES) , Manora Peak , Nainital , 263001 , IndiaVibhore NegiDepartment of Physics , Deen Dayal Upadhyaya Gorakhpur University , Gorakhpur , 273009 , IndiaKumar PranshuDepartment of Applied Optics and Photonics , University of Calcutta , Kolkata , 700106 , IndiaJean SurdejInstitute of Astrophysics and Geophysics , University of Liège , Allée du Six-Août 19c , 4000 Liège , Belgium
2024en
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ABI
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Recent research suggests a correlation between the variability and intrinsic brightness of quasars. If calibrated, this could lead to the use of quasars on the cosmic distance ladder, but this work is currently limited by lack of quasar light curve data with high cadence and precision. The Python photometric data pipeline SunPhot is being developed as part of preparations for an upcoming quasar variability survey with the International Liquid Mirror Telescope (ILMT). SunPhot uses aperture photometry to directly extract light curves for a catalogue of sources from calibrated ILMT images. SunPhot version 2.1 is operational, but the project is awaiting completion of ILMT commissioning.
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