Einstein’s Cross under the gravitational microlens

A Spanish research team has obtained measurements for the innermost region of a disc of matter in orbital motion around a supermassive black hole in the quasar known as Einstein’s Cross (Q2237-0305). It constitutes the most precise set of measurements achieved to date for such a small and distant object.

from Astronomy News – Space News, Exploration News, Earth Science News, Earth Science http://ift.tt/1Th4mg9
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