Grav. lensing caused by a very massive object
amr w astro.uni.torun.pl
Czw, 18 Gru 2003, 13:35:45 CET
From: Masamune Oguri <oguri w utap.phys.s.u-tokyo.ac.jp>
Title: A Gravitationally Lensed Quasar with Quadruple Images Separated by 14.62
Journal-ref: Nature 426 (2003) 810-812
[...] Here we report the discovery of a lensed quasar, SDSS J1004+14112,
which has a maximum separation between the components of 14.62 arcsec.
Such a large separation means that the lensing object must be dominated by
dark matter. Our results are fully consistent with theoretical
expectations based on the cold-dark-matter model.
\\ ( http://arXiv.org/abs/astro-ph/0312427 , 364kb)
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