SIMULATION OF COLOR VARIATIONS IN GRAVITATIONALLY LENSED QUASAR Q2237+0305 (THE EINSTEIN CROSS)

Автор(и)

  • G. V. Smirnov Institute of Astronomy, V.N.Karasin Kharkiv National University 35 Sumska Str., Kharkiv 61022 Ukraine, Ukraine
  • V. G. Vakulik Institute of Astronomy, V.N.Karasin Kharkiv National University 35 Sumska Str., Kharkiv 61022 Ukraine; Institute of Radio Astronomy of Nat.Ac.Sci. of Ukraine, Ukraine
  • R. E. Schild Center for Astrophysics 60 Garden Str., Cambridge, MA 02138, USA, United States
  • V. S. Tsvetkova Institute of Radio Astronomy of Nat.Ac.Sci. of Ukraine 4 Chervonopraporna Str., Kharkiv 61002, Ukraine, Ukraine

DOI:

https://doi.org/10.18524/1810-4215.2007.20.87206

Ключові слова:

gravitational lensing, quasars, individual, Q2237 0305.

Анотація

A mechanism of colorized phenomena in gravitationally lensed quasar Q2237+0305 due to microlensing is analysed in computer simulation. A two-component quasar spatial structure model consisting of a hot central source surrounded by an extended outer structure with a more low-temperature radiation was proposed. The model was shown to provide relationship between variations of the (V - I) color indices and R magnitudes, which is consistent to the observed one presented in our recent publication.

Посилання

Alcalde D., Mediavilla E., Moreau O., et al.: 2002, ApJ, 572, 729.

Corrigan R.T., Irwin M.J., Arnaud J.: 1991, AJ, 102, 34.

Dudinov V.N., V akulik V.G., Zheleznyak A.P . et. al.: 2000, Kinem. i Fiz. Neb. Tel., 16, 346.

Elvis M.: 2000, ApJ, 545, 63.

Huchra J., Gorenstein M., Kent S., et. al.: 1985, AJ, 90, 691.

Kayser R., Refsdal S., Stabell R.: 1986, A&A, 166, 36.

Mortonson M.J., Schechter P .L., Wambsganss J.: 2005, ApJ, 628, 594.

Ostensen R., Refsdal S., Stabell R., et al.: 1996, A&A, 309, 59.

Racine R.: 1992, ApJ, 395, L65.

Rix, H.-W.; Schneider, D.P.; Bahcall, J.N.: 1992, AJ, 104, 967.

Schild R., V akulik V.: 2003, AJ, 126, 689.

Schneider P ., Ehlers J., F alco E.E.: 1992, Gravitational Lenses, Springer-Verlag.

Udalski A., Szymanski M. K., Kubiak, M., et al.: 2006, Acta Astronomica, 56, 293.

Vakulik V.G., Dudinov V.N., Zheleznyak A.P ., et al.: 1997, Astron. Nachr., 318, 73.

Vakulik V.G., Schild R.E, Dudinov V.N., et al.: 2004, A&A, 420, 447.

Vakulik V.G., Schild R.E., Dudinov V.N., et al.: 2006, A&A, 447, 905.

Vakulik V.G., Schild R.E., Smirnov G.V., et al.: 2007, arXiv:0708.1082

Wambsganss J., Paczy´ nski B.: 1991, AJ, 102, 864.

Wozniak P .R., Alard C., Udalski A., et al.: 2000, ApJ, 529, 529.

Yee, H.K.C.: 1988, AJ, 95, 1331.

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Опубліковано

2007-12-22

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