Can we apply no hair theorem to neutron stars?

Question

As neutron stars are composed of neutrons only and we can't know where the neutron comes from (eg: from what atoms), does neutron stars also fulfill no hair theorem?

score 2 · Accepted Answer · answered Mar 23 '16 at 11:06

No, because neutron stars can have all sorts of complicated structure, and also aren't in fact composed entirely of neutrons at all, just almost entirely.

A vacuum solution like a BH is an entirely simpler animal.

Can we apply no hair theorem to neutron stars?

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