Astronomy:Q star

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Short description: Hypothetical compact star

A Q-star, also known as a grey hole, is a hypothetical type of a compact, heavy neutron star with an exotic state of matter. Such a star can be smaller than the progenitor star's Schwarzschild radius and have a gravitational pull so strong that some light, but not all light, cannot escape. The Q stands for a conserved particle number. A Q-Star may be mistaken for a stellar black hole.

Types of Q-stars

  • SUSY Q-ball[1]
  • B-ball, stable Q-balls with a large baryon number B. They may exist in neutron stars that have absorbed Q-ball(s).[1]

See also


  1. 1.0 1.1 Kusenko, Alexander (2006). "Properties and signatures of supersymmetric Q-balls". arXiv:hep-ph/0612159.

Further reading