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University of Utah researchers have discovered a surprisingly tiny new messenger in worms: protons. The find raises the possibility that the subatomic particle plays the same role in humans, the researchers say. ... more »

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Friday, January 11

Chandra data reveal black holes spinning near speed of light may effect new star formation

by ronjon on January 11, 2008 12:07PM (PST)

...According to Einstein's theory, a rapidly spinning black hole makes space itself rotate. This effect, coupled with gas spiraling toward the black hole, can produce a rotating, tightly wound vertical tower of magnetic field that flings a large fraction of the inflowing gas away from the vicinity of the black hole in an energetic, high-speed jet...

One significant consequence of powerful, black hole jets in galaxies in the centers of galaxy clusters is that they can pump enormous amounts of energy into their environments, and heat the gas around them. This heating prevents the gas from cooling, and affects the rate at which new stars form, thereby limiting the size of the central galaxy. Understanding the details of this fundamental feedback loop between supermassive black holes and the formation of the most massive galaxies remains an important goal in astrophysics. ... more »

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