Temporal behaviour of radial p-modes

被引：0

作者：

Leifsen, T ^{[1
]}

Andersen, BN ^{[1
]}

Toutain, T ^{[1
]}

机构：

[1] Inst Theoret Astrophys, N-0315 Oslo, Norway

来源：

PROCEEDINGS OF THE SOHO 10/GONG 2000 WORKSHOP ON HELIO- AND ASTEROSEISMOLOGY AT THE DAWN OF THE MILLENNIUM | 2001年 / 464卷

关键词：

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The amplitude modulation of solar radial p-modes has been studied in irradiance and radiance data from VIRGO and velocity data from MDI onboard SOHO. The amplitudes vary substantially with time. For two modes, l=0, n=21 and 22 we find a strong rotational modulation at the end of the old solar cycle (number 22). The modulation vanishes during solar minimum and only weakly reappears during the rise of the new cycle. There is a decrease in the integrated mode amplitudes with increased activity for the modes that show rotational modulation. At low solar activity there is little correlation between modes of varying order, but the correlation seems to increase with increasing solar activity.

引用

页码：63 / 68

页数：6

共 7 条

[1]

Baudin F, 1996, ASTRON ASTROPHYS, V311, P1024

[2]

Foglizzo T, 1998, ASTRON ASTROPHYS, V330, P341

[3]

Foglizzo T, 1998, ASTRON ASTROPHYS, V339, P261

[4] First results from VIRGO, the experiment for helioseismology and solar irradiance monitoring on SOHO [J].

Frohlich, C ;

Andersen, BN ;

Appourchaux, T ;

Berthomieu, G ;

Crommelynck, DA ;

Domingo, V ;

Fichot, A ;

Finsterle, W ;

Gomez, MF ;

Gough, D ;

Jimenez, A ;

Leifsen, T ;

Lombaerts, M ;

Pap, JM ;

Provost, J ;

Cortes, TR ;

Romero, J ;

Roth, H ;

Sekii, T ;

Telljohann, U ;

Toutain, T ;

Wehrli, C .

SOLAR PHYSICS, 1997, 170 (01) :1-25

[5] EXCITATION OF SOLAR P-MODES [J].

GOLDREICH, P ;

MURRAY, N ;

KUMAR, P .

ASTROPHYSICAL JOURNAL, 1994, 424 (01) :466-479

[6]

LEIFSEN T, 1998, SOUNDING SOLAR STELL

[7]

TOUTAIN T, 1992, ASTRON ASTROPHYS, V257, P287

← 1 →