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http://dx.doi.org/10.5303/JKAS.2020.53.6.149

QUADRUPLY-IMAGED QUASARS: SOME GENERAL FEATURES  

Tuan-Anh, P. (Department of Astrophysics, Vietnam National Space Center, VAST)
Thai, T.T. (Department of Astrophysics, Vietnam National Space Center, VAST)
Tuan, N.A. (University of Science and Technology of Hanoi (USTH), VAST)
Darriulat, P. (Department of Astrophysics, Vietnam National Space Center, VAST)
Diep, P.N. (Department of Astrophysics, Vietnam National Space Center, VAST)
Hoai, D.T. (Department of Astrophysics, Vietnam National Space Center, VAST)
Ngoc, N.B. (Department of Astrophysics, Vietnam National Space Center, VAST)
Nhung, P.T. (Department of Astrophysics, Vietnam National Space Center, VAST)
Phuong, N.T. (Department of Astrophysics, Vietnam National Space Center, VAST)
Publication Information
Journal of The Korean Astronomical Society / v.53, no.6, 2020 , pp. 149-159 More about this Journal
Abstract
Gravitational lensing of point sources located inside the lens caustic is known to produce four images in a configuration closely related to the source position. We study this relation in the particular case of a sample of quadruply-imaged quasars observed by the Hubble Space Telescope. Strong correlations between the parameters defining the image configuration are revealed. The relation between the image configuration and the source position is studied. Some simple features of the selected data sample are exposed and commented upon. In particular, evidence is found for the selected sample to be biased in favor of large magnification systems. While having no direct impact on practical analyses of specific systems, our results have pedagogical value and deepen our understanding of the mechanism of gravitational lensing.
Keywords
Gravitational lensing: strong; quasars: general;
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1 Blandford, R. D., Kochanek, C. S., Kovner, I., & Narayan, R. 1989, Gravitational Lens Optics, Science 245, 824   DOI
2 CASTLES Survey Data Repository, https://cfa.harvard.edu/castles
3 Falco, E. E., Kochanek, C. S., Lehar, J., et al. 1999, The CASTLES Gravitational Lensing Tool, arXiv:astro-ph/9910025
4 Hoai, D. T., Nhung, P. T., Anh, P. T., et al. 2013, Gravitationally Lensed Extended Sources: The Case of QSO RXJ0911, RAA 13, 803
5 Kassiola, A. & Kovner, I. 1995, Invariants of Simple Gravitational Lenses, MNRAS, 272, 363   DOI
6 Keeton, C. R., Gaudi, B. S., & Petters, A.O. 2003, Identifying Lenses with Small-Scale Structure. I. Cusp Lenses, ApJ, 598, 138   DOI
7 Keeton, C. R., Gaudi, B. S., & Petters, A. O. 2005, Identifying Lenses with Small-Scale Structure. II. Fold Lenses, ApJ, 635, 35   DOI
8 Kovner, I. 1987, The Quadrupole Gravitational Lens, ApJ, 312, 22   DOI
9 McKean, J. P., Koopmans, L. V. E., Flack, C. E., et al. 2007, High-resolution Imaging of the Anomalous Flux Ratio Gravitational Lens System CLASS B2045+265: Dark or Luminous Satellites?, MNRAS, 378, 109   DOI
10 Oguri, M., Inada, N., Keeton, C. R., et al. 2004, Observations and Theoretical Implications of the Large-Separation Lensed Quasar SDSS J1004+4112, ApJ, 605, 78   DOI
11 Witt, H. J. 1996, Using Quadruple Lenses to Probe the Structure of the Lensing Galaxy, ApJ, 472, L1   DOI
12 Schechter, P. L. & Wynne, R. A. 2019, Even Simpler Modeling of Quadruply Lensed Quasars (and Random Quartets) Using Witt's Hyperbola, ApJ, 876, 9   DOI
13 Wiklind, T., Combes, F., & Kanekar, N. 2018, ALMA Observations of Molecular Absorption in the Gravitational Lens PMN 0134-0931 at z = 0.7645, ApJ, 864, 73   DOI
14 Winn, J. N., Lovell, J. E. J., Chen, H.-W., et al. 2002, PMN J0134-0931: A Gravitationally Lensed Quasar with Unusual Radio Morphology, ApJ, 564, 143   DOI
15 Woldesenbet, A. G. & Williams, L. L. R. 2012, The Fundamental Surface of Quad Lenses, MNRAS, 420, 2944   DOI
16 Saha, P. & Williams, L. L. R. 2003, Qualitative Theory for Lensed QSOs, AJ, 125, 2769   DOI