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barry barry
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11 years ago
How can a black hole of a few solar masses be detected?
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11 years ago
Look for a binary system in which one body is not visible conventionally but is a strong X-ray source from mass transfer off the visible companion, and has mass over 3 solar masses, as revealed by the motion of the visible companion.
Would you know my name, if I saw you in heaven?

Eric Clapton
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barry Authorbarry
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11 years ago
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