The Størmer problem for an aligned rotator
| Autor: | V. Epp, O. N. Pervukhina |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Electromagnetic field
Physics Field (physics) Magnetosphere Astronomy and Astrophysics 01 natural sciences Potential energy 010305 fluids & plasmas Magnetic field Computational physics Dipole Space and Planetary Science Electric field 0103 physical sciences Trapping region Astrophysics - High Energy Astrophysical Phenomena 010303 astronomy & astrophysics Astrophysics - Earth and Planetary Astrophysics |
| Zdroj: | Monthly Notices of the Royal Astronomical Society. 474:5330-5339 |
| ISSN: | 1365-2966 0035-8711 |
| DOI: | 10.1093/mnras/stx3102 |
| Popis: | The effective potential energy of the particles in the field of rotating uniformly magnetized celestial body is investigated. The axis of rotation coincides with the axis of the magnetic field. Electromagnetic field of the body is composed of a dipole magnetic and quadrupole electric fields. The geometry of the trapping regions is studied as a function of the magnetic field magnitude and the rotation speed of the body. Examples of the potential energy topology for different values of these parameters are given. The main difference from the classical St{\o}rmer problem is that the single toroidal trapping region predicted by St{\o}rmer is divided into equatorial and off-equatorial trapping regions. Applicability of the idealized model of a rotating uniformly magnetized sphere with a vacuum magnetosphere to real celestial bodies is discussed. Comment: This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society Published by Oxford University Press |
| Databáze: | OpenAIRE |
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