Abstract
We introduce to the stellar physics community a method of modelling stellar coronae that can be considered to be an extension of the potential field. In this approach, the magnetic field is coupled to the background atmosphere. The model is magnetohydrostatic and is a balance between the Lorentz force, the pressure gradient and gravity. Analytical solutions are possible and we consider a particular class of equilibria in this paper. The model contains two free parameters and the effects of these on both the geometry and topology of the coronal magnetic field are investigated. A demonstration of the approach is given using a magnetogram derived from Zeeman-Doppler imaging of the 0.75 M☉ M-dwarf star GJ 182.
| Original language | English |
|---|---|
| Pages (from-to) | 767-774 |
| Number of pages | 8 |
| Journal | Monthly Notices of the Royal Astronomical Society |
| Volume | 456 |
| Issue number | 1 |
| Early online date | 17 Dec 2015 |
| DOIs | |
| Publication status | Published - 11 Feb 2016 |
Keywords
- MHD
- methods: analytical
- stars: coronae
- stars: magnetic field
ASJC Scopus subject areas
- Astronomy and Astrophysics
