Q star

Not to be confused with quark 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. 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
• B-ball, stable Q-balls with a large baryon number B. They may exist in neutron stars that have absorbed Q-ball(s).

See also

• Black hole
  • Stellar black hole
• Compact star
  • Exotic star
    • Preon star
    • Quark starajay

External links

• Abstract, Are Q-stars a serious threat for stellar-mass black hole candidates?, Miller J.C., Shahbaz T., Nolan L.A, 1997
• Abstract, No observational proof of the black-hole event-horizon, Marek A. Abramowicz, Wlodek Kluzniak, Jean-Pierre Lasota, 2002

{{{1}}}

Observation data Epoch {{{epoch}}}      Equinox
Constellation	{{{3}}}
{{{component1}}}
Right ascension	{{{ra1}}}
Declination	{{{dec1}}}
Apparent magnitude (V)	{{{appmag_v1}}}
{{{component2}}}
Right ascension	{{{ra2}}}
Declination	{{{dec2}}}
Apparent magnitude (V)	{{{appmag_v2}}}
Characteristics
Evolutionary stage	{{{9}}}
Spectral type	{{{7}}}
Astrometry
Distance	{{{4}}} ly
Details
Radius	{{{5}}} R☉
Diameter	{{{5}}} D☉
Luminosity (bolometric)	{{{11}}} L☉
Temperature	{{{8}}} K
Other designations
{{{1}}}, {{{2}}}

{{{1}}}, also known as {{{2}}}, is a star located in the constellation {{{3}}}. It is located {{{4}}} light years away from the Earth. {{{1}}} has a diameter of {{{5}}} D_☉, making it around the size of the orbit of {{{6}}}. {{{1}}} has a stellar class of {{{7}}} and a temperature of {{{8}}} degrees Kelvin; it is a {{{9}}} that is currently burning {{{10}}} within its core. {{{1}}} is around {{{11}}} times brighter than the Sun. {{{12}}}{{{13}}}