Multiple Choice
What causes X- ray bursters?
A) The binary companion of a neutron star spirals in and combines with the neutron star.
B) The rapid rotation of the neutron star causes it to fly apart.
C) Helium fusion, which occurs when the thin layer of accreted material on a neutron star reaches 100 million K
D) The mass of an accreting neutron star passes a critical threshold between 2 and 3 Msun and explodes.
Correct Answer:
Verified
Correct Answer:
Verified
Q56: Imagine that our Sun were magically and
Q57: What is the upper limit to the
Q58: Which stars are more common?<br>A)White dwarfs and
Q59: Why is there an upper limit to
Q60: Why would the earth's orbit be unaffected
Q62: Which of the following statements about black
Q63: Suppose a white dwarf is gaining mass
Q64: Pulsars are thought to be _ .<br>A)accreting
Q66: How is an X- ray burst (in
Q72: All massive-star supernovae leave behind black holes