News tagged with central black
Active galaxies are different near and far
Jan 06, 2009 |
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(PhysOrg.com) -- An ongoing X-ray survey undertaken by NASA's Swift spacecraft is revealing differences between nearby active galaxies and those located about halfway across the universe. Understanding these ...
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Black Holes Lead Galaxy Growth
Jan 06, 2009 |
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(PhysOrg.com) -- Astronomers may have solved a cosmic chicken-and-egg problem -- the question of which formed first in the early Universe -- galaxies or the supermassive black holes seen at their cores.
Risk of aggressive breast cancer subtype three times higher for black women
Mar 25, 2009 |
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Lifestyle, age and weight have all been considered as risk factors for breast cancer. Now a study published in the open access journal Breast Cancer Research has found that even taking these factors into consideration, black ...
Black Hole Pumps Iron
Sep 14, 2009 |
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(PhysOrg.com) -- This composite image of the Hydra A galaxy cluster shows 10-million- degree gas observed by Chandra in blue and jets of radio emission observed by the Very Large Array in pink. Optical data ...
Chandra data reveal rapidly whirling black holes
Jan 10, 2008 |
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A new study using results from NASA's Chandra X-ray Observatory provides one of the best pieces of evidence yet that many supermassive black holes are spinning extremely rapidly. The whirling of these giant ...
Black hole outflows from Centaurus A detected with APEX
Jan 28, 2009 |
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(PhysOrg.com) -- Astronomers have a new insight into the active galaxy Centaurus A (NGC 5128), as the jets and lobes emanating from the central black hole have been imaged at submillimetre wavelengths for ...
An Intriguing, Glowing Galaxy
May 14, 2009 |
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A supermassive black hole may be responsible for the glowing appearance of galaxy 3C 305, located about 600 million light years away in the constellation Draco. Composite data from NASA’s Chandra X-ray Observatory ...
A new way to weigh giant black holes
Jul 16, 2008 |
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How do you weigh the biggest black holes in the universe? One answer now comes from a completely new and independent technique that astronomers have developed using data from NASA's Chandra X-ray Observatory.
Why Are Galaxies without Black Holes Uncommon?
May 30, 2007 |
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Recent calculations indicate that when two galaxies, and the supermassive black holes that lie at their centers, merge, these galactic 'marriages' frequently produce gravitational forces strong enough to kick the new combined ...
Rogue Black Holes May Roam the Milky Way
Apr 29, 2009 |
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(PhysOrg.com) -- It sounds like the plot of a sci-fi movie: rogue black holes roaming our galaxy, threatening to swallow anything that gets too close. In fact, new calculations by Ryan O'Leary and Avi Loeb ...
Stars Forming Just Beyond Black Hole’s Grasp at Galactic Center
Jan 05, 2009 |
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(PhysOrg.com) -- The center of the Milky Way presents astronomers with a paradox: it holds young stars, but no one is sure how those stars got there. The galactic center is wracked with powerful gravitational ...
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