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Gamma-ray Beams from Milky Way's Center

milky way active galactic nuclei fermi space telescope gamma ray astronomy black holes

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#1    Waspie_Dwarf

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Posted 01 June 2012 - 12:17 AM

Ghostly Gamma-ray Beams Blast from Milky Way's Center


www.cfa.harvard.edu said:

As galaxies go, our Milky Way is pretty quiet. Active galaxies have cores that glow brightly, powered by supermassive black holes swallowing material, and often spit twin jets in opposite directions. In contrast, the Milky Way's center shows little activity. But it wasn't always so peaceful. New evidence of ghostly gamma-ray beams suggests that the Milky Way's central black hole was much more active in the past.

"These faint jets are a ghost or after-image of what existed a million years ago," said Meng Su, an astronomer at the Harvard-Smithsonian Center for Astrophysics (CfA), and lead author of a new paper in the Astrophysical Journal.

"They strengthen the case for an active galactic nucleus in the Milky Way's relatively recent past," he added.

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#2    Taun

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Posted 01 June 2012 - 10:34 AM

View PostWaspie_Dwarf, on 01 June 2012 - 12:17 AM, said:


Ghostly Gamma-ray Beams Blast from Milky Way's Center


Thanks Waspie... That was interesting...





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