Mini-jets of material ejected from a central supermassive black hole appear to be the culprits behind faint radio wave emissions in 'radio-quiet' quasars. A study of gravitationally lensed images of four radio-quiet quasars ...
Astronomy
Jul 1, 2016
1
500
New research led by astrophysicists at York University has revealed the fastest winds ever seen at ultraviolet wavelengths near a supermassive black hole.
Astronomy
Mar 21, 2016
15
475
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 ...
Astronomy
Dec 23, 2015
61
1734
Scientists have developed a technique to use quasars – powerful sources driven by supermassive black holes at the centre of galaxies – to study the universe's history and composition. To demonstrate the new method, based ...
Astronomy
Dec 4, 2015
1
1713
Quasars are galaxies with massive black holes at their cores around which vast amounts of energy are being radiated. Indeed, so much light is emitted that the nucleus of a quasar is much brighter than the rest of the entire ...
Astronomy
Dec 1, 2015
1
75
NGC 4639 is a beautiful example of a type of galaxy known as a barred spiral. It lies over 70 million light-years away in the constellation of Virgo and is one of about 1,500 galaxies that make up the Virgo Cluster.
Astronomy
Oct 19, 2015
1
97
When galaxies collide, bright things happen in the universe.
Astronomy
Jun 18, 2015
20
1937
Using the W. M. Keck Observatory in Hawaii, a group of astronomers led by Joseph Hennawi of the Max Planck Institute for Astronomy have discovered the first quadruple quasar: four rare active black holes situated in close ...
Astronomy
May 14, 2015
50
2307
A group of unusual giant black holes may be consuming excessive amounts of matter, according to a new study using NASA's Chandra X-ray Observatory. This finding may help astronomers understand how the largest black holes ...
Astronomy
Apr 30, 2015
1
94
"How far can you see with that thing?" It's a common question overhead at many public star parties in reference to telescopes.
Astronomy
Feb 25, 2015
1
52
