Multiple Choice
What is the typical duration of a "long" gamma-ray burst?
A) several days, indicating a size much smaller than the distance from Earth to the nearest star beyond the Sun
B) about a minute, indicating a source smaller than Mercury's orbit
C) up to about 1 hour, indicating a source less than half the size of the solar system
D) several hours, indicating a source somewhat larger than the solar system
Correct Answer:
Verified
Correct Answer:
Verified
Q156: If the Sun were replaced by a
Q157: Einstein's theory of special relativity contains some
Q158: If Alice stays on Earth while Bob
Q159: A compact body pulls material from a
Q160: What is the Schwarzschild radius of a
Q162: If astronomers want to measure the mass
Q163: Which is the correct sequence for the
Q164: A light wave is emitted from the
Q165: By what method are MOST intermediate black
Q166: What is the observed distribution of the