Do Quasars Lens Quasars?
| Autor: | E. J. Wampler |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 1996 |
| Předmět: |
Physics
education.field_of_study Astrophysics::High Energy Astrophysical Phenomena Population Astrophysics (astro-ph) FOS: Physical sciences Astronomy and Astrophysics Quasar Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Galaxy Redshift law.invention Lens (optics) Gravitation Space and Planetary Science law Physics::Space Physics Astrophysics::Earth and Planetary Astrophysics education Astrophysics::Galaxy Astrophysics |
| Popis: | If the unexpectedly high frequency of quasar pairs with very different component redshifts is due to the lensing of a population of background quasars by the foreground quasar, typical lens masses must be $\sim10^{12}M_{\sun}$ and the sum of all such quasar lenses would have to contain $\sim0.005$ times the closure density of the Universe. It then seems plausible that a very high fraction of all $\sim10^{12} M_{\sun}$ gravitational lenses with redshifts $z\sim1$ contain quasars. Here I propose that these systems have evolved to form the present population of massive galaxies with M$_{\rm B}\leq-22$ and $M >5\times10^{11} M_{\sun}$. 6 pages, aas style, ams symbols, ApJL (accepted) |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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