Universal Charge-Radius Relation for Subatomic and Astrophysical Compact Objects
Apr, 2008Citations per year
Abstract: (arXiv)
Electron-positron pair creation in supercritical electric fields limits the net charge of any static, spherical object, such as superheavy nuclei, strangelets, and Q-balls, or compact stars like neutron stars, quark stars, and black holes. For radii between fm and fm the upper bound on the net charge is given by the universal relation , and for larger radii (measured in fm or km) . For objects with nuclear density the relation corresponds to () and (), where is the baryon number. For some systems this universal upper bound improves existing charge limits in the literature.- 04.70.-s
- 97.60.Jd
- 21.65.Qr
- 21.65.Mn
- neutron star
- black hole
- quark: star
- Q-ball
- nucleus: heavy
- electron: pair production
References(14)
Figures(1)