How much electric surcharge fits on ... a white dwarf star?
| Autor: | Parker Hund, Michael K.-H. Kiessling |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Brown dwarf
General Physics and Astronomy FOS: Physical sciences Astrophysics Relativistic quantum mechanics Electron General Relativity and Quantum Cosmology (gr-qc) 01 natural sciences Electric charge General Relativity and Quantum Cosmology symbols.namesake 0103 physical sciences Astrophysics::Solar and Stellar Astrophysics Planck 010306 general physics Quantum Astrophysics::Galaxy Astrophysics Solar and Stellar Astrophysics (astro-ph.SR) Physics 05 social sciences 050301 education White dwarf Astrophysics - Solar and Stellar Astrophysics symbols Astrophysics::Earth and Planetary Astrophysics Ground state 0503 education |
| Popis: | The question how much surplus of electric charge ("surcharge") fits on an object is generally very difficult to answer. Here it is shown that it is easy to answer when the object is a \emph{failed white dwarf} star (a brown dwarf in its ground state) made of protons and electrons: Given the number of protons, how many electrons can there be? Surprisingly, the answer (in the form: as few as $\mathfrak{A}$ and as many as $\mathfrak{B}$) is independent of the speed of light $c$ and the Planck quantum $h$, even when the star is stabilized against collapse by relativistic quantum mechanics. 9 pages, 3 figures. This revision contains about 1/3 of v1, slightly expanded, and will appear in Am. J. Phys. It no longer contains the exactly solvable model. The remaining 2/3 of v1 with the exactly solvable model have been expanded significantly into a new paper in its own right, to be published separately |
| Databáze: | OpenAIRE |
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