Multiple Choice
The search for black holes involves searching for
A) single stars that emit large amounts of X-rays.
B) X-ray binaries where the compact companion has a mass in excess of 3.
C) large spherical regions from which no light is detected.
D) pulsars with periods less than one millisecond.
E) pulsars that are orbited by planets.
Correct Answer:

Verified
Correct Answer:
Verified
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