Helioseismic modes in a magnetic atmospheric solar model

Balázs Pintér; Róbert Erdélyi

Helioseismic modes in a magnetic atmospheric solar model

Balázs Pintér^*, Róbert Erdélyi

^*Corresponding author for this work

Department of Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference Proceeding (Non-Journal item)

Abstract

The pulsation of the solar surface is caused by acoustic waves traveling in the solar interior. These f and p oscillation modes are not bounced back completely at the surface, but partially penetrate into the atmosphere. Here the atmospheric effects are investigated analytically on global oscillations in one-dimensional magnetohydrodynamic (MHD) models. We focus on the frequency spectrum of the f mode, hence an incompressible medium is considered. The global oscillation modes can be coupled resonantly to local atmospheric MHD modes (such as Alfvén and degenerated slow waves) causing frequency shifts and line broadening. An analytical approach is implemented for a first insight.

Original language	English
Title of host publication	SOHO 18/GONG 2006/HELAS I Beyond the spherical Sun
Publication status	Published - Oct 2006
Event	SOHO 18/GONG 2006/HELAS I Beyond the spherical Sun - Sheffield, United Kingdom of Great Britain and Northern Ireland Duration: 07 Aug 2006 → 11 Aug 2006

Publication series

Name	European Space Agency, (Special Publication) ESA SP
Volume	624 SP
ISSN (Print)	0379-6566

Conference

Conference	SOHO 18/GONG 2006/HELAS I Beyond the spherical Sun
Country/Territory	United Kingdom of Great Britain and Northern Ireland
City	Sheffield
Period	07 Aug 2006 → 11 Aug 2006

Keywords

Fundamental mode
Helioseismology
Magnetohy-drodynamics
Solar physics

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title = "Helioseismic modes in a magnetic atmospheric solar model",

abstract = "The pulsation of the solar surface is caused by acoustic waves traveling in the solar interior. These f and p oscillation modes are not bounced back completely at the surface, but partially penetrate into the atmosphere. Here the atmospheric effects are investigated analytically on global oscillations in one-dimensional magnetohydrodynamic (MHD) models. We focus on the frequency spectrum of the f mode, hence an incompressible medium is considered. The global oscillation modes can be coupled resonantly to local atmospheric MHD modes (such as Alfv{\'e}n and degenerated slow waves) causing frequency shifts and line broadening. An analytical approach is implemented for a first insight.",

keywords = "Fundamental mode, Helioseismology, Magnetohy-drodynamics, Solar physics",

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month = oct,

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T1 - Helioseismic modes in a magnetic atmospheric solar model

AU - Pintér, Balázs

AU - Erdélyi, Róbert

PY - 2006/10

Y1 - 2006/10

N2 - The pulsation of the solar surface is caused by acoustic waves traveling in the solar interior. These f and p oscillation modes are not bounced back completely at the surface, but partially penetrate into the atmosphere. Here the atmospheric effects are investigated analytically on global oscillations in one-dimensional magnetohydrodynamic (MHD) models. We focus on the frequency spectrum of the f mode, hence an incompressible medium is considered. The global oscillation modes can be coupled resonantly to local atmospheric MHD modes (such as Alfvén and degenerated slow waves) causing frequency shifts and line broadening. An analytical approach is implemented for a first insight.

AB - The pulsation of the solar surface is caused by acoustic waves traveling in the solar interior. These f and p oscillation modes are not bounced back completely at the surface, but partially penetrate into the atmosphere. Here the atmospheric effects are investigated analytically on global oscillations in one-dimensional magnetohydrodynamic (MHD) models. We focus on the frequency spectrum of the f mode, hence an incompressible medium is considered. The global oscillation modes can be coupled resonantly to local atmospheric MHD modes (such as Alfvén and degenerated slow waves) causing frequency shifts and line broadening. An analytical approach is implemented for a first insight.

KW - Fundamental mode

KW - Helioseismology

KW - Magnetohy-drodynamics

KW - Solar physics

UR - http://www.scopus.com/inward/record.url?scp=33847366303&partnerID=8YFLogxK

M3 - Conference Proceeding (Non-Journal item)

AN - SCOPUS:33847366303

SN - 9290929359

SN - 9789290929352

T3 - European Space Agency, (Special Publication) ESA SP

BT - SOHO 18/GONG 2006/HELAS I Beyond the spherical Sun

T2 - SOHO 18/GONG 2006/HELAS I Beyond the spherical Sun

Y2 - 7 August 2006 through 11 August 2006

ER -

Helioseismic modes in a magnetic atmospheric solar model

Abstract

Publication series

Conference

Keywords

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