Exam 14: The Death of Stars

Where would one look for a pulsar among these locations in the universe?

What is the name given to the type of planetary nebula in which a doughnut-shaped cloud of gas and dust in the plane of the equator channels the outflow in opposite directions toward the poles?

X-ray bursters emit occasional and intense bursts of X-rays on top of a steady low-level X-ray emission. These bursts of X-rays are believed to be caused by

The very last nuclear process to occur at the center of a massive star (at the end of its life) is

A high-mass star goes through many fusion cycles in its lifetime: hydrogen, helium, carbon, neon, oxygen, and silicon. How does the timescale for each cycle compare to the previous one?

Pulsars are rotating neutron stars that emit beams of electromagnetic radiation that sweep around the universe like rotating lighthouse beams. The charged particles that emit these beams are believed to be

In the process of helium shell fusion in a low-mass star near the end of its life, the star moves upward and to the right on the asymptotic giant branch of the Hertzsprung-Russell diagram. In this process, the star is

Which one of these does NOT form a part of the flux of cosmic rays reaching Earth?

The enormous densities that develop during a supernova collapse do not appear to be sufficient to form the heaviest elements. Where do the conditions to produce these elements occur?

In a nova, the radiation outburst is caused by fusion of hydrogen to produce helium on the surface of a white dwarf. The radiation outburst from an X-ray burster is caused by fusion of

Which of these phenomena is NEVER a consequence of a supernova explosion?

In which order does a single star of about 1 solar mass progress through the various stages of evolution?

What are cosmic rays?

When the core of a star becomes too massive to be held up by the pressure associated with electron degeneracy, it

The first pulsar was discovered by

What finally halts the core collapse in the initial stages of the formation of a Type II supernova?

The stars that eventually become white dwarfs start life with solar masses less than

Visible pulses are seen to accompany radio pulses from a neutron star only

The spectrum of a Type Ia supernova can be identified because it lacks evidence of

Neutron stars are believed to be created by