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Modeling the Effects of a Light Bridge on Properties of Magnetohydrodynamic Waves in Solar Pores

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posted on 2024-11-06, 01:10 authored by Luiz ACA Schiavo, Mykola Gordovskyy, Philippa K Browning, Suzana de Souza e Almeida Silva, Gary Verth, Istvan Ballai, Sergiy ShelyagSergiy Shelyag, Sergey N Ruzheinikov, James A McLaughlin, Viktor Fedun
Abstract Solar pores are ideal magnetic structures for wave propagation and transport of energy radially outwards across the upper layers of the solar atmosphere. We aim to model the excitation and propagation of magnetohydrodynamic waves in a pore with a light bridge modeled as two interacting magnetic flux tubes separated by a thin, weaker-field layer. We solve the three-dimensional magnetohydrodynamic equations numerically and calculate the circulation as a measure of net torsional motion. We find that the interaction between flux tubes results in the natural excitation of propagating torsional Alfvén waves but find no torsional waves in the model with a single flux tube. The torsional Alfvén waves propagate with wave speeds matching the local Alfvén speed where wave amplitude peaks.

History

Journal

The Astrophysical Journal (ApJ)

Volume

975

Pagination

1-9

Location

Washington, D.C.

Open access

  • Yes

ISSN

0004-637X

eISSN

1538-4357

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Issue

1

Publisher

American Astronomical Society

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