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

Helioseismic Search for Magnetic Field in the Solar Interior

2000 ◽  
Vol 179 ◽  
pp. 343-347
Author(s):  
H. M. Antia ◽  
S. M. Chitre ◽  
M. J. Thompson
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Large Scale ◽  
Solar Interior ◽  
The Sun ◽  
Solar Oscillation ◽  
Oscillation Frequencies

AbstractThe observed splittings of solar oscillation frequencies can be utilized to study possible large-scale magnetic fields present in the solar interior. Using the GONG data on frequency splittings an attempt is made to infer the strength of magnetic fields inside the Sun.

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.

Prediction of solar oscillation frequencies

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

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

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

scholarly journals The Sun’s Rotation Near the Interface Between its Convective and Radiative Zones: 1986 to 1990

1993 ◽  
Vol 141 ◽  
pp. 545-548
Author(s):  
Philip R. Goode
Keyword(s):  
Magnetic Field ◽  
Internal Rotation ◽  
Convection Zone ◽  
Solar Observatory ◽  
Private Communication ◽  
Solar Oscillation ◽  
Body Rotation ◽  
Solid Body Rotation ◽  
Temporal And Spatial ◽  
The Magnetic Field

The Sun’s rotation rate near the base of its convection zone might be expected to vary over the solar cycle because of related changes there in the magnetic field. Helioseismic analyses have taught us that much of the Sun’s convection zone rotates with surface-like differential rotation and a transition toward solid body rotation beneath. For a review of what we know about the Sun’s internal rotation, see Goode, et al.(1991). We now have sufficient solar oscillation data to look for changes in the internal rotation near the base of the convection zone. The relevant data are from the 1986, 1988, 1989 and 1990 Big Bear Solar Observatory( BBSO) sets, Libbrecht and Woodard(1992, private communication). These four datasets were gathered at the same site for roughly the same number of days, reduced in the same way and span the same temporal and spatial frequency ranges—the differences between the sets should arise primarily because they were obtained in different years.

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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