Gravity balls in induced gravity model - 'gravitational lens' effects
| dc.creator | Safonova, M. V. | |
| dc.creator | Lohiya, D. | |
| dc.date | 1999-11-11 | |
| dc.date.accessioned | 2026-07-07T02:34:22Z | |
| dc.date.available | 2026-07-07T02:34:22Z | |
| dc.description | In non-minimally coupled effective gravity theories one can have non-topological solitonic solutions. A typical solution is a spherical region with $G_{\it eff}=0$ outside and having the canonical Newtonian value inside. Such a spherical domain (gravity-ball) is characterized by an effective index of refraction which causes bending of light incident on it. The gravity ball thus acts as a spherical lens. We consider the gravity ball to be of a size of a typical cluster of galaxies and show that even empty (without matter) gravity ball can produce arc-like images of the background source galaxy. In case of background random galaxy field the ball produces distortions (`shear') of that field. We also obtained constraints on the size of the large gravity ball, which can be inferred from the existing observations of clusters with arcs. | |
| dc.description | 8 pages,LaTeX2e,7 postscript figures,1 postscript table, submitted to Journal of Gravitation and Cosmology | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9911210 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9911210 | |
| dc.identifier | Grav.Cosmol. 6 (2000) 327-334 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/15215 | |
| dc.subject | Astrophysics | |
| dc.title | Gravity balls in induced gravity model - 'gravitational lens' effects | |
| dc.type | text |