Talk:Preon star

Notability

Sanity check: Is there anything published in a bona-fide peer-reviewed journal about "preon stars"? "Letters" journals tend to have lower standards, though I'd have to check with the local physicists about Phys. Lett. B. Eprints and similar are next to worthless as science references (you wouldn't believe how much crank material has made it into arxiv). If references can be found, I'm all for keeping this article, but models involving preons were only around briefly, and fell out of favour when experimental data started conflicting with them. --Christopher Thomas 07:10, 24 February 2006 (UTC)

Actually there are several models for preons and although a few of them have fallen out of favor because of conflicts with experimental data, not all have. Since we can not measure any of the qualities of the preon directly the articles on preon stars have taken this ambiguity into account. I actually had an in depth discussion with Johan Hansson, the particle physicist working on the project, last week about this and he told me that this ambiguity was itself what made preon stars interesting. If they exist preon stars will cause significant gravitational lensing and are detectable now, or very soon. Another method of detection that they are looking into is due to gravitational waves created by (hypothetical) binary preon stars. These waves would operate at an extremely high frequency (much higher frequency than anything besides, perhaps, a binary black hole), due to the Conservation of Angular Momentum.

Why Care? The interesting thing about preon stars is that if they exist and are detected thy may help to solve three of the major puzzles of modern physics: 1. Dark Matter. If preon stars exist, then they may contribute to the elusive Dark Matter mystery. 2. The So Called 'Oh My God' Particles. Or the Hyper High energy particles that we have evidence of... Essentially preon stars, if they exist, could radiate matter/antimatter pairs, since they are spinning at incredible velocities and are spectacular dense. And Finally, The Quark. Why are Strange/Charm and Top/Bottom Quarks unstable? How can something be unstable and Fundamental? If Preons exist, then the answer is that they are not fundamental. If detected, preon stars could give theoretical physicists a hint of coming attractions and allow them to calculate some very important features about preons.

Additionally, Dr. Hansson was talking about the development of preon stars and was very clear that the name is a misnomer. Preon stars are not massive enough to have ever been stars. The most likely explanation is that they formed from hyper-dense clumps of mass that occured very soon after the big bang. —Preceding unsigned comment added by Moto Perpetuo (talk • contribs) 05:33, 9 March 2008 (UTC)

Disregarding the notability and the reliability for now (don't confuse please!), the second source, being a PDF composed of four papers, arguing for: 1. black holes cannot exist, because it violates too many quantum principles, 2. strange-quark-plasma should be stable and the strangeness a prerequisite for unconfined quark matter, 3. strange-quark-plasma is more stable than hyperonic matter, 4. iff (a great if indeed!) there are preons (subquark particles), then "preon stars" do exist, but those "stars" must have been created at Big Bang, probably by a strange-quark-plasma some way, 5. "preon stars" are great candidates for the missing mass, 6. preon stars are lighter than white dwarfs and neutron stars. Since I'm a computer scientist, I cannot estimate reliability nor notability. Said: Rursus ☻ 22:31, 23 June 2008 (UTC)

Schwarzschild radius

Sorry, but I just found a really obvious problem here: the article currently says that a preon star the mass of the earth would be the size of a tennis ball, but isn't the Schwarzschild radius for an earth mass about 4.5 centimeters? there's no way that the preon star could be smaller than that. 98.207.130.36 (talk) 00:12, 24 July 2009 (UTC)

If I remember correctly, the Schwarzschild radius for a mass the size of Earth was on the order of 1 cm. --Christopher Thomas (talk) 19:24, 24 July 2009 (UTC)

You were right, I calculated it out, it's about 0.9 centimeters. 98.207.130.36 (talk) 17:21, 27 July 2009 (UTC)

Eigenmode frequency

I propose to eliminate the term eigenmode from eigenmode frequency for radial oscillations. Probably the author mean the frequency of the lowest mode of radial oscillation. Arodichevski (talk) 08:18, 30 May 2017 (UTC)