Grav. lensing caused by a very massive object

[Andrzej Marecki]

Paper: astro-ph/0312427
From: Masamune Oguri <oguri w utap.phys.s.u-tokyo.ac.jp>
Title: A Gravitationally Lensed Quasar with Quadruple Images Separated by 14.62
       Arcseconds
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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Andrzej