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Home Q & A Board Science-Related Homework Help Physics
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staedtler staedtler
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7 years ago
How has the diameter of the black hole candidate Cygnus X-1 been estimated?
A)   From its angular size in the sky and its known distance
B)   From the time scale of flickering of the X rays emitted by it
C)   From its orbital period around a companion star
D)   From the length of time it blocks off the light from its companion star when it passes in front of (eclipses) its companion, as seen from the Earth
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
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hyponoticahyponotica
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7 years ago
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staedtler Author
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7 years ago
Person Raising Both Hands in Celebration

Correct Slight Smile
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