Solar-cycle effects on solar oscillation frequencies

Nature ◽  
1990 ◽  
Vol 345 (6278) ◽  
pp. 779-782 ◽  
Author(s):  
K. G. Libbrecht ◽  
M. F. Woodard
Keyword(s):  
Solar Cycle ◽  
Solar Oscillation ◽  
Oscillation Frequencies

scholarly journals Variability in the solar output

1990 ◽  
Vol 330 (1615) ◽  
pp. 641-643 ◽  
Keyword(s):  
Solar Cycle ◽  
Solar Neutrino ◽  
Neutrino Flux ◽  
Convective Zone ◽  
Solar Oscillation ◽  
Dynamo Action ◽  
Solar Neutrino Flux ◽  
Oscillation Frequencies

Evidence for variability in the solar output is briefly discussed. If the solar neutrino flux and the solar oscillation frequencies vary over a solar cycle this could indicate that the solar cycle has its origin in the solar core rather than be due to dynamo action in the solar convective zone.

scholarly journals Variation of solar oscillation frequencies in solar cycle 23 and their relation to sunspot area and number(Corrigendum)

2013 ◽  
Vol 560 ◽  
pp. C1
Author(s):  
R. Jain ◽  
S. C. Tripathy ◽  
F. T. Watson ◽  
L. Fletcher ◽  
K. Jain ◽  
...  
Keyword(s):  
Solar Cycle ◽  
Sunspot Area ◽  
Solar Oscillation ◽  
Solar Cycle 23 ◽  
Oscillation Frequencies

scholarly journals Variation of solar oscillation frequencies in solar cycle 23 and their relation to sunspot area and number

2012 ◽  
Vol 545 ◽  
pp. A73 ◽  
Author(s):  
R. Jain ◽  
S. C. Tripathy ◽  
F. T. Watson ◽  
L. Fletcher ◽  
K. Jain ◽  
...  
Keyword(s):  
Solar Cycle ◽  
Sunspot Area ◽  
Solar Oscillation ◽  
Solar Cycle 23 ◽  
Oscillation Frequencies

scholarly journals Seismic Evidence of Modulation of the Structure and Angular Velocity of the Sun Associated with the Solar Cycle

1993 ◽  
Vol 137 ◽  
pp. 93-96 ◽  
Author(s):  
D.O. Gough ◽  
A.G. Kosovichev ◽  
T. Sekii ◽  
K.G. Libbrecht ◽  
M.F. Woodard
Keyword(s):  
Solar Cycle ◽  
Angular Velocity ◽  
Temporal Variations ◽  
The Sun ◽  
Expansion Coefficients ◽  
Oscillation Frequencies

Solar p-mode multiplet oscillation frequencies and expansion coefficients for degeneracy splitting have been measured in the summers of 1986 and 1988–1990. Temporal variations not unlike the differences between 1988 and 1986 reported by Libbrecht & Woodard (1990) continue into 1990. These differences are possibly associated with the solar cycle. We report here on our first findings about the variation of the internal angular velocity and asphericity deduced from these frequency differences.

Prediction of solar oscillation frequencies

Nature ◽  
1988 ◽  
Vol 336 (6201) ◽  
pp. 720-720 ◽  
Author(s):  
D. O. GOUGH
Keyword(s):  
Solar Oscillation ◽  
Oscillation Frequencies

Magnetic field corrections to solar oscillation frequencies

Nature ◽  
1986 ◽  
Vol 323 (6089) ◽  
pp. 603-605 ◽  
Author(s):  
B. Roberts ◽  
W. R. Campbell
Keyword(s):  
Magnetic Field ◽  
Solar Oscillation ◽  
Oscillation Frequencies

Effect of Asymmetry in Peak Profiles on Solar Oscillation Frequencies

2000 ◽  
Vol 531 (2) ◽  
pp. 1088-1093 ◽  
Author(s):  
Sarbani Basu ◽  
H. M. Antia
Keyword(s):  
Solar Oscillation ◽  
Oscillation Frequencies

Solar Metal Abundance Inferred from Helioseismology

2001 ◽  
Vol 203 ◽  
pp. 43-45
Author(s):  
M. Takata ◽  
H. Shibahashi
Keyword(s):  
Sound Speed ◽  
Heavy Element ◽  
Convection Zone ◽  
Element Abundance ◽  
Solar Model ◽  
Solar Oscillation ◽  
Solar Structure ◽  
Metal Abundance ◽  
Basic Equations ◽  
Oscillation Frequencies

In our previous work (Takata & Shibahashi 1998), we constructed a solar model called the seismic solar model, which has the consistent profile of sound speed as well as the consistent depth of the convection zone with helioseismology. The profile of the heavy element abundance, however, had to be assumed to be constant for feasibility. Here we try to constrain the distribution of the heavy element abundance as well by the solar oscillation frequencies, adopting all of the basic equations which govern the solar structure.

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