News tagged with quasars
Related topics: astronomers , galaxies , black holes
Discovery that quasars don't show time dilation mystifies astronomers
(PhysOrg.com) -- The phenomenon of time dilation is a strange yet experimentally confirmed effect of relativity theory. One of its implications is that events occurring in distant parts of the universe should ...
Apr 09, 2010 |
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Black hole blows big bubble
Combining observations made with ESO's Very Large Telescope and NASA's Chandra X-ray telescope, astronomers have uncovered the most powerful pair of jets ever seen from a stellar black hole. This object, also ...
Jul 07, 2010 |
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Merging galaxies create a binary quasar (w/ Video)
Astronomers have found the first clear evidence of a binary quasar within a pair of actively merging galaxies. Quasars are the extremely bright centers of galaxies surrounding super-massive black holes, and ...
Feb 03, 2010 |
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The birth of a telescope 30 times larger than Earth
(PhysOrg.com) -- On 15 November 2011, the Effelsberg 100-meter radio telescope, together with three Russian and one Ukrainian telescope, took part in the first interferometric observations with the orbiting ...
Dec 08, 2011 |
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Astronomers discover an unusual cosmic lens
Astronomers at the California Institute of Technology (Caltech) and Ecole Polytechnique Fédérale de Lausanne (EPFL) in Switzerland have discovered the first known case of a distant galaxy being ...
Jul 16, 2010 |
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Cosmic Curiosity Reveals Ghostly Glow of Dead Quasar
(PhysOrg.com) -- While sorting through hundreds of galaxy images as part of the Galaxy Zoo citizen science project two years ago, Dutch schoolteacher and volunteer astronomer Hanny van Arkel stumbled upon ...
Nov 03, 2010 |
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Earliest watery black hole discovered
Water really is everywhere. Two teams of astronomers, each led by scientists at the California Institute of Technology (Caltech), have discovered the largest and farthest reservoir of water ever detected in ...
Jul 22, 2011 |
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Scientists observe how black holes eat matter
(PhysOrg.com) -- For the first time, scientists have been able to observe matter falling into super massive black holes.
Jun 11, 2010 |
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Astronomers discover new way to measure Universe
(PhysOrg.com) -- Astronomers at Copenhagen's Niels Bohr Institute have found a new way to measure distances. This may not sound like much, but working out how far away something is, is one of the toughest ...
Sep 27, 2011 |
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Astronomers observe fast growing primitive black holes
(PhysOrg.com) -- Astronomers have come across what appear to be two of the earliest and most primitive supermassive black holes known. The discovery, based largely on observations from NASA's Spitzer Space ...
Mar 17, 2010 |
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Nearby black hole is feeble and unpredictable
For over 10 years, NASA's Chandra X-ray Observatory has repeatedly observed the Andromeda Galaxy for a combined total of nearly one million seconds. This unique data set has given astronomers an unprecedented ...
May 25, 2010 |
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Astronomers find pristine clouds of primordial gas from the early Universe
(PhysOrg.com) -- For the first time, astronomers have found pristine clouds of the primordial gas that formed in the first few minutes after the Big Bang. The composition of the gas matches theoretical predictions, ...
Nov 10, 2011 |
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Radio-astronomers form telescope the size of Earth
(PhysOrg.com) -- Radio telescopes around the world will join forces this week to carry out a unique observation of three quasars, distant galaxies powered by super-massive black holes at their cores.
Jan 13, 2009 |
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Erratic black holes regulate their growth (w/Videos)
(PhysOrg.com) -- New results from NASA's Chandra X-ray Observatory have made a major advance in explaining how a special class of black holes may shut off the high-speed jets they produce. These results suggest ...
Mar 25, 2009 |
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Survey reveals many thousands of supermassive black holes
(PhysOrg.com) -- An international team of scientists, led by Penn State Distinguished Professor Donald Schneider, has announced its completion of a massive census in which they identified the quasars in one ...
Jun 07, 2010 |
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