Dark follower of Milky Way sought
Some astronomers spend their careers peering at and discovering distant galaxies; Sukanya Chakrabarti is trying to discover one a lot closer to home. Chakrabarti, a post doctoral fellow and theoretical astronomer at UC Berkeley has developed a mathematical formula that she says can identify and measure small, "dark" satellite galaxies orbiting larger galactic disks, and she thinks she's found an undetected one just on the other side of the Milky Way from Earth, obscured from our view by the dust and gas in the galaxy. Well, it's also obscured from our view by the fact that it's mad mostly of dark matter. Dwarf galaxies are thought to orbit many large galaxies like the Milky Way, though we can't readily observe them because they are too dim to see or are dominated by dark matter. Chakrabarti's method observes them indirectly by analyzing the ripples in the hydrogen gas distribution in spiral galaxies and inferring the position and size of the satellites. Related ArticlesA New Look at Newton's Second Law C
Dark follower of Milky Way sought
Scientists have proposed a means to track down the dark dwarf galaxies that should be orbiting the Milky Way, saying they have found evidence of one, reports the BBC's Jason Palmer.
Fri 14 Jan 11 from BBC News
Forget Planet X! New technique could pinpoint Galaxy X
(PhysOrg.com) -- Planet X, an often-sought 10th planet, is so far a no-show, but Sukanya Chakrabarti has high hopes for finding what might be called Galaxy X – a dwarf galaxy that she predicts ...
Thu 13 Jan 11 from Phys.org
Forget Planet X! New technique could pinpoint Galaxy X, Thu 13 Jan 11 from e! Science News
Mysterious 'Galaxy X' Around Milky Way May Soon be Found
A dwarf galaxy that is too dim to see but is thought to orbit the Milky Way could soon be found using a new mathematical technique that analyzes ripples in the distribution of gas in spiral ...
Thu 13 Jan 11 from Livescience
'Galaxy X,' an Invisible Satellite Made of Dark Matter, Could be Lurking at the Milky Way's Edge
Some astronomers spend their careers peering at and discovering distant galaxies; Sukanya Chakrabarti is trying to discover one a lot closer to home. Chakrabarti, a post doctoral fellow and ...
Thu 13 Jan 11 from Popular Science
New Dark Matter Map Created for Big Galaxies
Researchers have mapped out the dark matter in a sample of huge galaxies, determining where the strange stuff resides and how much of it there is.
Thu 13 Jan 11 from Livescience
New technique could pinpoint 'Galaxy X': Satellite galaxies located based on the ripples they create in the hydrogen gas
Many galaxies have smaller satellites, but astronomers can't see them all because many are composed of dark matter. Astronomers have developed a way to find dark satellite galaxies by analyzing ...
Thu 13 Jan 11 from ScienceDaily
New Technique Could Pinpoint Galaxy X
By Robert Sanders, UC BerkeleyAnalysis method can locate satellite galaxies based on the ripples they create in the hydrogen gasPlanet X, an often-sought 10th planet, is so far a no-show, but ...
Thu 13 Jan 11 from RedOrbit
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