Dark matter or background noise? Results intriguing but not conclusive
Physicists may have glimpsed a particle that is a leading candidate for mysterious dark matter but say conclusive evidence remains elusive.
General Physics
Feb 11, 2010
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Page 19 - News tagged with cluster galaxies
Weak Lensing Gains Strength
(PhysOrg.com) -- Berkeley Lab cosmologists were part of an international team that has extended the relationship between the x-ray luminosity and the mass of galaxy clusters as measured by gravitational lensing, improving ...
Astronomy
Jan 19, 2010
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Galaxy cluster smashes distance record
The most distant galaxy cluster yet has been discovered by combining data from NASA's Chandra X-ray Observatory and optical and infrared telescopes. The cluster is located about 10.2 billion light years away, and is observed ...
Astronomy
Oct 22, 2009
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Stripped down: Hubble highlights two galaxies that are losing it
(PhysOrg.com) -- Ram pressure is the drag force that results when something moves through a fluid -- much like the wind you feel in your face when bicycling, even on a still day -- and occurs in this context as galaxies orbiting ...
Astronomy
Sep 30, 2009
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Turbulence responsible for black holes' balancing act
We live in a hierarchical Universe where small structures join into larger ones. Earth is a planet in our Solar System, the Solar System resides in the Milky Way Galaxy, and galaxies combine into groups and clusters. Clusters ...
Astronomy
Jul 14, 2009
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Suzaku snaps first complete X-ray view of a galaxy cluster
The joint Japan-U.S. Suzaku mission is providing new insight into how assemblages of thousands of galaxies pull themselves together. For the first time, Suzaku has detected X-ray-emitting gas at a cluster's outskirts, where ...
Astronomy
May 28, 2009
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Did 'Dark Gulping' Generate Black Holes in Early Universe?
(PhysOrg.com) -- A process called ‘dark gulping’ may solve the mystery of the how supermassive black holes were able to form when the Universe was less than a billion years old.
Astronomy
Apr 23, 2009
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Astronomers find most crowded collision of galaxy clusters
The most crowded collision of galaxy clusters has been identified by combining information from three different telescopes. This result gives scientists a chance to learn what happens when some of the largest objects in ...
Astronomy
Apr 16, 2009
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Hubble provides new evidence for dark matter around small galaxies
Peering into the tumultuous heart of the nearby Perseus galaxy cluster, Hubble discovered a large population of small galaxies that have remained intact while larger galaxies around them are being ripped apart by the gravitational ...
Astronomy
Mar 12, 2009
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Star Light, Star Bright, Its Explanation is Out of Sight
(PhysOrg.com) -- A mysterious flash of light from somewhere near or far in the universe is still keeping astronomers in the dark long after it was first detected by NASA's Hubble Space Telescope in 2006. It might represent ...
Astronomy
Jan 6, 2009
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