GLOBULAR CLUSTERS AS GRAVITATIONAL LENSES. OBSERVATIONAL TEST

Автор(и)

  • A. V. Yushchenko Astronomical observatory of Odessa State University, T.G.Shevchenko Park, Odessa 270014 Ukraine, Україна

DOI:

https://doi.org/10.18524/1810-4215.1999.12.93138

Ключові слова:

quasi-stellar objects, galaxies, redshifts - gravitational lensing

Анотація

Let us suppose that globular clusters in the halos of distant galaxies can act as a gravitational lenses. The observational test for this hypothesis is the overdensity of star-like images near foreground galaxies. We analyzed USNO A2.0 catalog in the vicinity of 35862 galaxies with redshifts 0.01-0.33 and found that mean overdensity of objects brighter than 21m is near 100 objects per galaxy.

Посилання

Barnotti J.M.: 1965, Astron. J., 70, 666

Baryshev Yu.V., Raikov A.A., Yushchenko A.V.: 1993, Proc. of 31 Liege Astrophys. Coll. Gravitational lenses in the Universe, P. 307.

Baryshev Yu.V., Ezova Yu.L.: 1997, Astronomy reports, 74, 497

Burbidge G., Hewitt A., Narlikar J.V., Das Gupta P.: 1990, Astrophys. J. Suppl. Ser., 74, 675.

Huchra J.P., Geller M.J., Clemens C.M., Tokarz S.P., Michel A.: 1995, ADS CD ROM, Vol.3.

Monet D., et al.: 1998, USNO A2.0. A catalog of astrometric standards (CD edition).

Yakovlev D.G., Mitrofanof I.G., Levshakov S.A., Varshalovich D.A.: 1983, Astrophys. and Space Sci., 91, 133.

Yushchenko A.V., Baryshev Yu.V., Raikov A.A.: 1998, Astron. Astroph. Transactions, 17, 9.

Yushchenko A.V., Raikov A.A.: 1998, Proc. of the II conf. Selected problems of astronomy and astrophysics, Lviv, Ukraine, p. 185.

##submission.downloads##

Опубліковано

2017-03-16

Номер

Розділ

Статті