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22 votes
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Rotation direction of Pulsars

Does the Earth rotate clockwise or anticlockwise? If you are floating above the north pole of Earth you would see the Earth rotating anticlockwise(*) if you were floating above the south pole, you ...
James K's user avatar
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8 votes

Do the neutrons in neutron stars emit the radio waves?

The electromagnetic radiation comes from accelerated charged particles, mainly electrons and positrons. The surface of a neutron star is not made of neutrons. It is a totally ionised gas of nuclei ...
ProfRob's user avatar
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6 votes

Do free protons and neutrons absorb much radiation? To affect astronomers' observations? If so, at what wavelength(s)?

You cannot have free protons without electrons. Plasmas, in general, are electrically neutral. It is usually electrons that dominate the scattering (note that a point-like charge cannot absorb a ...
ProfRob's user avatar
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6 votes

Why is the number density of neutrons much larger in neutron stars?

The neutrons are surrounded by a dense, degenerate electron (and proton) gas, which is produced by neutron decay. The degeneracy means that all energy states are totally filled by electrons up to a ...
ProfRob's user avatar
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2 votes

Why is the number density of neutrons much larger in neutron stars?

In nature, a lone neutron is not stable. It will, as you mentioned about it’s half life, breakdown pretty quickly. This is because the neutron is more massive and thus energetic than the sum of its ...
Justin T's user avatar
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