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Neutron-star physics

Neutron Degeneracy Pressure

The quantum pressure — arising from the Pauli exclusion principle acting on densely packed neutrons — that holds a neutron star up against its own gravity. It is far stronger than the electron degeneracy pressure that supports a white dwarf, but it too has a limit: above roughly two to three solar masses, no known pressure can prevent collapse into a black hole.

Highlights

  • Quantum pressure that supports a neutron star

Across compact objects

Knowledge connections

Sources

The primary and reference sources this topic draws on.

  • NASANational Aeronautics and Space Administration

    Mission data, planetary science, space telescopes, and public-domain imagery.

    Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.