Supernovas help 'clean' galaxies

Supernovas help 'clean' galaxies
Jets erupting from a supermassive black hole, such as the one in Centaurus A (shown in this color composite image), might clear the way for supernovas to sweep out gas and stop star formation. Credit:WFI/ESO (optical); A. Weill et al/APEX/MPIFR and ESO (submillimeter); R. Kraft et al/ CXC/CFA and NASA (X-ray).

Supernovas just might be the maid service of the universe.

It seems these explosions that mark the end of a star's life work hand-in-hand with to sweep out gas and shut down galaxies' star-forming factories.

Recent research, led by Michigan State University astronomers, finds that the located at the cores of galaxies launch fountains of charged particles, which can stir up gas throughout the galaxy and temporarily interrupt .

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 , 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 research was recently published in Astrophysical Journal Letters.


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Journal information: Astrophysical Journal Letters

Citation: Supernovas help 'clean' galaxies (2015, May 26) retrieved 17 June 2019 from https://phys.org/news/2015-05-supernovas-galaxies.html
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May 27, 2015
Sub; supernovas as part of cosmic function
Dual Mode Vortex Structure [DMVT] is critical in maintaining the Balanced mode.
This is more explained in my Research papers and Books. I welcome Interaction
https://www.scrib...-NANDURI
vidyardhi Nanduri [visitor-Chicago]

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