PHOTOMETRY OF THE GRAVITATIONALLY LENSED QUASAR GRAL J024848.7+191331
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We presents the results of a photometric research of the four-component of the gravitational lensed quasar GRAL J024848.7+191331, which was observed at the Maidanak Observatory in 2021-2022. The light curves of the system and individual components are shown; there are no signs of microlensing. The values of time delay between the three main pairs of object components are calculated.
Nigina ALIMOVA, Ta’lat AXUNOV, Dilshod BEKOV, & Otabek BURXONOV. (2024). PHOTOMETRY OF THE GRAVITATIONALLY LENSED QUASAR GRAL J024848.7+191331. «ACTA NUUz», 3(3.1), 483–487. https://doi.org/10.69617/nuuz.v3i3.1.1912
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2. P. Schneider, J. Ehlers, E. Falco. Gravitational lenses. Astronomy and Astrophysics Library, pp. XIV, 560 (1993).
3. F. Ostrovski, R.G. McMahon,A.J. Connolly, C.A. Lemon, et al. Monthly Notices of the Royal Astronomical Society 465, 4325–4334 (2017).
4. L. Delchambre, A. Krone-Martins, O. Wertz, C. Ducourant, L. Galluccio et al. Astronomy & Astrophysics, 622, A165 (2019)
5. A. J. Shajib, S. Birrer, T. Treu, M.W. Auger, A. Agnello, et al. Monthly Notices of the Royal Astronomical Society 483, 5649–5671 (2019)
6. D. Stern, S.G. Djorgovski, A. Krone-martins, D. Sluse, et al., The Astrophysical Journal, 921, 42 (2020).
7. T. Akhunov, O. Wertz, A. Elyiv, et al., Monthly Notices Royal Astron. Soc. 465, 3607 (2017)
8. D. Tody, Proc. SPIE, 627, 733 (1986)
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11. R. Gil-Merino, L. Wisotzki, J. Wambsganss. Astronomy & Astrophysics 381, 428 (2002).
12. V. Vakulik, R. Schild, V. Dudinov, S. Nuritdinov, V. Tsvetkova, O. Burkhonov, and T. Akhunov. A&A 447, 905–913 (2006).
13. Т.А. Ахунов. Узбекский физический журнал 20, 275-282 (2018)
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