Preon star
From Wikipedia, the free encyclopedia
 |
This article or section includes a list of references or external links, but its sources remain unclear because it lacks in-text citations. You can improve this article by introducing more precise citations. |
A preon star is a hypothetical compact star made of preons, a group of theoretical subatomic particles that may compose quarks and leptons. Preon stars would be expected to have huge densities, exceeding 1020 g/cm³ — 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.
Such objects could be detected in principle through gravitational lensing of gamma rays. The presence of preon stars could potentially explain the puzzling observations that lead to the dark matter hypothesis.
Preon stars could originate from supernova explosions or the big bang, although it seems difficult to explain how such heavy and compact objects could be formed.
[edit] See also
[edit] 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)
 |
This star-related article is a stub. You can help Wikipedia by expanding it. |
