A preon star is a proposed type of compact star made of preons, a group of hypothetical subatomic particles. Preon stars would be expected to have huge densities, exceeding 1023 kilogram per cubic meter—intermediate between quark stars and black holes. A preon star having the same mass as Earth would be about the size of a tennis ball.
Preon stars could originate from supernova explosions or the big bang. Such objects could be detected in principle through gravitational lensing of gamma rays. Preon stars are a potential candidate for dark matter.[citation needed] However, current observations from particle accelerators speaks against the existence of preons.
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References
- Johan Hansson and Fredrik Sandin, Preon stars: a new class of cosmic compact objects. Phys. Lett. B 616, 1 (2005).
- Fredrik Sandin, Exotic Phases of Matter in Compact Stars. (May 8, 2005) PDF
- Johan Hansson, A hierarchy of cosmic compact objects - without black holes. Acta Phys.Polon. B38, 91 (2007). PDF
- Johan Hansson and Fredrik Sandin, The observational legacy of preon stars - probing new physics beyond the LHC.
- J. E. Horvath, Constraints on superdense preon stars and their formation scenarios. Astrophys. Space Sci. 307, 419 (2007).
- Fredrik Sandin, Exotic Phases of Matter in Compact Stars. (2007) PDF
- Article in NatureNews : Splitting the quark. (Nov. 2007)
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