| The
Nucleus of the Galaxy |
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| � | Likely Black hole |
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| � | High velocities |
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| � | Large energy generation |
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| � | At� a=275
AU� P=2.8 yr |
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| 2.7 million solar masses |
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| � | Radio image of Sgr A |
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| about 3 pc across, with |
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| model of surrounding disk |
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