Helioseismic modes in a magnetic atmospheric solar model

Balázs Pintér*, Róbert Erdélyi

*Awdur cyfatebol y gwaith hwn

Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion CynhadleddTrafodion Cynhadledd (Nid-Cyfnodolyn fathau)

Crynodeb

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.

Iaith wreiddiolSaesneg
TeitlSOHO 18/GONG 2006/HELAS I Beyond the spherical Sun
StatwsCyhoeddwyd - Hyd 2006
DigwyddiadSOHO 18/GONG 2006/HELAS I Beyond the spherical Sun - Sheffield, Teyrnas Unedig Prydain Fawr a Gogledd Iwerddon
Hyd: 07 Awst 200611 Awst 2006

Cyfres gyhoeddiadau

EnwEuropean Space Agency, (Special Publication) ESA SP
Cyfrol624 SP
ISSN (Argraffiad)0379-6566

Cynhadledd

CynhadleddSOHO 18/GONG 2006/HELAS I Beyond the spherical Sun
Gwlad/TiriogaethTeyrnas Unedig Prydain Fawr a Gogledd Iwerddon
DinasSheffield
Cyfnod07 Awst 200611 Awst 2006

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