The (slightly) active nucleus of our galaxy
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Probable Black hole
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High velocities
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Large energy generation
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At
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a=275 AU
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P=2.8 yr
2.7 million solar
masses
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Radio image of Sgr A*
about 3 pc across, with
model of surrounding
disk
Core star movie:
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http://www.mpe.mpg.de/www_ir/GC/