The Search for Black Holes Involves Searching for

question 6

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.