
Concept explainers
The definition of neutron stars.
The location from where the neutrons come from.

Answer to Problem 1Q
A neutron star is a small, highly dense star which consists of highly compacted neutrons.
The neutrons come by fusion of electron and protons in the core of the supernova.
Explanation of Solution
Introduction:
When the core of a supernova of Type II consists of extremely closely packed neutrons in their final stages and if the core remains, after blasting its outer layers back to interstellar space, it becomes a neutron star. It cannot be compressed further.
The highly compact neutron star has the density of an atomic nucleus and its size is very small. A neutron star has a powerful magnetic field and it rotates rapidly. Mass of a neutron star is less than
The core of massive a star above
The neutrinos emitted from the core taking remnants (gas and dust) during the collapsing of supernova leaving neutrons in the un-blasted core.
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Chapter 21 Solutions
Universe: Stars And Galaxies
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