Neutron Star

Neutron Star
Image from Steve Bowers

A very small dense star that is composed mostly of tightly-packed neutrons (neutronium).

This hard-to-see body, the remnant of a star after it has exploded as a supernova, has a thin atmosphere of superhot hydrogen plasma and a crust made up mainly of iron and other heavy nuclei. It has a diameter of about 5-16 km and a density of roughly 1015 gm/cm3. Beneath the crust lies a mantle of superfluid neutronium, which can become mixed with quark matter at the core. Most neutron stars rotate rapidly, with periods ranging from a few seconds down to milliseconds.
 
Related Articles
  • Gamma Ray Bursters
  • Geminga
  • Hildemar's Knots
  • KJEI-54-458945 - Text by M. Alan Kazlev
    Neutron star in the Einstein's Revenge Cluster, home to Hildemar's knots.
  • Magnetar
  • Neuron Star - Text by Damien Broderick, in Anders Sandberg's Transhuman Terminology
    A neutron star used as a basis for a densely packed mind (similar to a jupiter brain or omegon) exploiting neutronium or quark matter for computation.
  • Neutron - Text by M. Alan Kazlev
    Uncharged atomic nuclear particle. It has a mass slightly greater than a proton. In beta decay, a neutron decays into a proton, an electron, and an anti-neutrino.
  • Pulsar
 
Appears in Topics
 
Development Notes
Text by M. Alan Kazlev

Initially published on 09 December 2001.