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NS and BH
neutron stars and black holes
| Question | Answer |
|---|---|
| What will happen to an isolated neutron star that accumulates more than about 3 solar masses of material? | It will overcome the neutron degeneracy in its interior, forming a black hole. |
| What effect predicted by Einstein's general theory of relativity can be observed most conveniently during a solar eclipse? | Deflection of light by the gravitational field of the Sun |
| An astrophysicist traveling in space at a speed of 0.5 c encounters a beam of synchrotron light emitted by a pulsar. What is the speed of the light in this beam as measured by this explorer? | Exactly 1.0 c, regardless of the observer's angle or direction with respect to the pulsar. |
| The event horizon | has a radius equal to the Schwarzchild radius |
| The observed slowing of time in the vicinity of a black hole is a prediction of | general relativity |
| In the center of the Crab Nebula we have detected a | neutron star |
| What explanation does general relativity provide for gravity? | Gravity is the result of curved spacetime |
| A typical neutron star will be more massive than the Sun, with a diameter of about | 20 km |
| At what stage of its life will our Sun become a black hole? | never |
| What typically remains after a supernova? | a neutron star or black hole |