Q&A: Supernova Remnants and Neutron Stars
Q:
Is there any known star that has the apparent dimensions of the
depicted mystery object on which we voted at http://chandra.harvard.edu/vote/q11.html?
A:
The mystery object may be unresolved by Chandra. At the distance
of Cas A,about 10,000 light years, the smallest resolution
element in the timage corresponds to a size of about 300 billion
kilometers, which is about 2 million times larger than the Sun.
Size alone clearly will not tell us much. Studies of the energy
spectrum (distribution of X-rays with energy) or evidence of
rapid pulsation will ultimately be decisive in determining the
nature of the mystery object.
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