| Issue |
A&A
Volume 668, December 2022
|
|
|---|---|---|
| Article Number | A32 | |
| Number of page(s) | 11 | |
| Section | The Sun and the Heliosphere | |
| DOI | https://doi.org/10.1051/0004-6361/202244844 | |
| Published online | 29 November 2022 | |
Impulsively generated two-fluid magnetoacoustic-gravity waves: Solar chromosphere heating and plasma outflows
1
Institute of Physics, University of Maria Curie-Skłodowska, Pl. Marii Curie-Skłodowskiej 5, 20-031 Lublin, Poland
e-mail: robert.niedziela.96@gmail.com
2
IGAM, Institute of Physics, University of Graz, Universitätsplatz 5, 8010 Graz, Austria
3
School of Natural Sciences and Medicine, Ilia State University, Cholokashvili Ave. 3/5, Tbilisi 0162, Georgia
4
Centre for Mathematical Plasma Astrophysics/Department of Mathematics, KU Leuven, Celestijnenlaan 200B, 3001 Leuven, Belgium
5
Abastumani Astrophysical Observatory, Mount Kanobili, Abastumani, Georgia
Received:
30
August
2022
Accepted:
24
September
2022
Context. We use a two-fluid model to study the heating of the solar chromosphere by magnetoacoustic and magnetoacoustic-gravity waves. In the model, we include energy dissipation as a result of ion–neutral collisions.
Aims. The aim of this paper is to study impulsively generated two-fluid magnetoacoustic and magnetoacoustic-gravity waves and to quantify their contribution to chromosphere heating and the generation of plasma outflows.
Methods. We consider a 2D model of the gravitationally stratified and partially ionized solar atmosphere that is permeated by a vertical magnetic field. To describe the dynamics of the atmosphere, we use a set of two-fluid equations which we solve numerically with the use of the JOANNA code.
Results. We show that large-amplitude impulsively generated magnetoacoustic-gravity waves can efficiently heat the chromosphere and generate plasma outflows in the low solar corona. The chromosphere is heated by ion–neutral collisions, which are most effective at the top of this atmospheric layer. Wider and larger amplitude pulses heat the atmosphere more effectively and generate faster plasma outflows.
Conclusions. Large-amplitude, impulsively generated two-fluid magnetoacoustic-gravity waves have the potential to contribute to the solar chromosphere heating and plasma outflows in the low corona.
Key words: magnetohydrodynamics (MHD) / waves / Sun: activity / Sun: atmosphere
© R. Niedziela et al. 2022
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
This article is published in open access under the Subscribe-to-Open model. Subscribe to A&A to support open access publication.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.