Astronomers have found that the black holes located at the cores of
galaxies launch fountains of charged particles, which can stir up gas
throughout the galaxy and temporarily interrupt star formation. But
unless something intervenes, the gas will eventually cool and start
forming stars again.
Recent research, led by Michigan State University astronomers, finds
that the black holes located at the cores of galaxies launch fountains
of charged particles, which can stir up gas throughout the galaxy and
temporarily interrupt star formation.
But unless something intervenes, the gas will eventually cool and start forming stars again.
One mega-outburst from the black hole, though, could heat the gas surrounding the galaxy enough to let supernovas take over and mop up the mess. A celestial cleaning partnership might help astronomers understand why some massive galaxies stopped forming stars billions of years ago.
"Our previous research had shown that black-hole outbursts can limit star formation in massive galaxies, but they can't completely shut it off," said team leader Mark Voit, MSU professor of physics and astronomy in the College of Natural Science. "Something else needs to keep sweeping out the gas that dying stars continually dump into a galaxy, and supernova sweeping appears to work perfectly for that."
Other members of the research team are Megan Donahue, MSU professor of physics and astronomy; Brian O'Shea, MSU associate professor of physics and astronomy; Greg Bryan, Columbia University professor of astronomy; Ming Sun, University of Alabama in Huntsville assistant professor of physics; and Norbert Werner, Stanford University research associate.
This story is taken from Science Daily
But unless something intervenes, the gas will eventually cool and start forming stars again.
One mega-outburst from the black hole, though, could heat the gas surrounding the galaxy enough to let supernovas take over and mop up the mess. A celestial cleaning partnership might help astronomers understand why some massive galaxies stopped forming stars billions of years ago.
"Our previous research had shown that black-hole outbursts can limit star formation in massive galaxies, but they can't completely shut it off," said team leader Mark Voit, MSU professor of physics and astronomy in the College of Natural Science. "Something else needs to keep sweeping out the gas that dying stars continually dump into a galaxy, and supernova sweeping appears to work perfectly for that."
Other members of the research team are Megan Donahue, MSU professor of physics and astronomy; Brian O'Shea, MSU associate professor of physics and astronomy; Greg Bryan, Columbia University professor of astronomy; Ming Sun, University of Alabama in Huntsville assistant professor of physics; and Norbert Werner, Stanford University research associate.
This story is taken from Science Daily
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