News tagged with quasars
Related topics: astronomers , galaxies , black holes
Measuring the distant universe in 3-D: BOSS proves it can do the job with quasars
The biggest 3-D map of the distant universe ever made, using light from 14,000 quasars – supermassive black holes at the centers of galaxies billions of light years away – has been constructed by ...
May 01, 2011 |
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The power of spin
(PhysOrg.com) -- Supermasssive black holes - objects with masses of millions or billions of suns - are found at the nuclei of dramatic galaxies like quasars where they are responsible for some of the most ...
Jan 28, 2011 |
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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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Precocious galaxy cluster identified by Chandra X-ray Observatory
(PhysOrg.com) -- NASA's Chandra X-ray Observatory has observed an unusual galaxy cluster that contains a bright core of relatively cool gas surrounding a quasar called 3C 186. This is the most distant object ...
Oct 26, 2010 |
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Astrophysicists discover a quasar that acts as a cosmic lens (w/ Video)
A quasar acting as a gravitational lens has now been observed for the first time. This discovery, made by the EPFL's Laboratory of Astrophysics in cooperation with Caltech, represents an advance in the field, ...
Jul 20, 2010 |
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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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Image: Black Hole Blows Big Bubble
This composite image shows a powerful microquasar produced by a black hole in the outskirts of the nearby (12.7 million light years) galaxy NGC 7793. The large image contains data from the Chandra X-ray Observatory ...
Space & Earth / Space Exploration
Jul 12, 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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Galaxy encounter fires up quasar
(PhysOrg.com) -- Using two of the world’s largest telescopes, an international team of astronomers have found evidence of a collision between galaxies driving intense activity in a highly luminous quasar. ...
Jun 24, 2010 |
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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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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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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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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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Quasar Dust in the Early Universe
(PhysOrg.com) -- Quasars are galaxies whose very bright cores are thought to contain massive black holes around which disks are actively accreting matter.
Mar 26, 2010 |
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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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