Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Bukhmastova, Yu. L."'
Publikováno v:
Astronomy Reports (2011) Vol. 55, No. 4, pp. 324-340
We have analyzed the spatial distribution of galaxies from the release of the Sloan Digital Sky Survey of galactic redshifts (SDSS DR7), applying the complete correlation function (conditional density), two-point conditional density (cylinder), and r
Externí odkaz:
http://arxiv.org/abs/1104.0884
Autor:
Bukhmastova, Yu. L., Baryshev, Yu. V.
Publikováno v:
in "Practical Cosmology", v.1, pp.187-194, 2008
Gravitational lensing of background compact objects like active galactic nuclei and quasars, by extended intermediate mass lenses such as globular clusters and and dark matter clumps with masses 10^5 - 10^8 M_sun, is considered. It is shown that obse
Externí odkaz:
http://arxiv.org/abs/0809.3403
Autor:
Bukhmastova, Yu. L.
Publikováno v:
Astron.Lett.33:355-367,2007; Pisma Astron.Zh.33:403-416,2007
Based on the SDSS catalog, we have found new close quasar-galaxy pairs. Quasars projected onto the halos of nearer galaxies are encountered among the multitude of quasars observed at various distances from us. Among them there are quasars that are cl
Externí odkaz:
http://arxiv.org/abs/0705.0446
Autor:
Baryshev, Yu. V., Bukhmastova, Yu. L.
Publikováno v:
Astron.Lett. 30 (2004) 444-450
We suggest a new method for estimating the fractal dimension of the spatial distribution of galaxies, the method of selected cylinders. We show the capabilities of this method by constructing a two-point conditional column density for galaxies with k
Externí odkaz:
http://arxiv.org/abs/astro-ph/0409142
Autor:
Bukhmastova, Yu. L.
Publikováno v:
Astron.Lett. 29 (2003) 214-223
We argue that globular clusters (GCs) are good candidates for gravitational lenses in explaining quasar-galaxy associations. The catalog of associations (Bukhmastova 2001) compiled from the LEDA catalog of galaxies (Paturel 1997) and from the catalog
Externí odkaz:
http://arxiv.org/abs/astro-ph/0304207
Autor:
Bukhmastova, Yu. L.
Publikováno v:
Astrofiz. 45 (2002) 231-239
The distribution function of quasars with respect to apparent brightness is given, found under the assumption that quasars are, at least partially, the gravitationally enhanced images of the active nuclei of distant galaxies. A Schechter law and a tw
Externí odkaz:
http://arxiv.org/abs/astro-ph/0209390
Autor:
Bukhmastova, Yu. L.
Publikováno v:
Astron.Rep. 45 (2001) 581-590
A new catalog of 8382 close quasar-galaxy pairs is presented. The catalog was composed using published catalogs of quasars and active galactic nuclei containing 11358 objects, as well as the LEDA catalog of galaxies, which contains on the order of 10
Externí odkaz:
http://arxiv.org/abs/astro-ph/0206456
Autor:
Baryshev, Yu. V., Bukhmastova, Yu. L.
Publikováno v:
Astron.Rep. 41 (1997) 436
The probability of strong gravitational lensing of distant compact objects by transparent lenses with King mass distributions is calculated. Examples of such lenses are globular clusters, dwarf galaxies, and clusters of hidden mass. The lens masses t
Externí odkaz:
http://arxiv.org/abs/astro-ph/0206348
