# The quest for the solar g modes

@article{Appourchaux2010TheQF, title={The quest for the solar g modes}, author={Thierry Appourchaux and K'evin Belkacem and A-M. Broomhall and William J. Chaplin and Douglas O. Gough and G{\"u}nter Houdek and Janine Provost and Fr'ed'eric Baudin and Patrick Boumier and Yvonne P. Elsworth and R. A. Garcı́a and Bo Nyborg Andersen and Wolfgang Finsterle and Claus Fr{\"o}hlich and Alan H. Gabriel and G{\'e}rard Grec and Antonio J. Jimenez and Alexander G. Kosovichev and Takashi Sekii and Thierry Toutain and S. Turck-chi{\`e}ze}, journal={The Astronomy and Astrophysics Review}, year={2010}, volume={18}, pages={197-277} }

Solar gravity modes (or g modes)—oscillations of the solar interior on which buoyancy acts as the restoring force—have the potential to provide unprecedented inference on the structure and dynamics of the solar core, inference that is not possible with the well-observed acoustic modes (or p modes). The relative high amplitude of the g-mode eigenfunctions in the core and the evanesence of the modes in the convection zone make the modes particularly sensitive to the physical and dynamical… Expand

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#### References

SHOWING 1-10 OF 358 REFERENCES

On the Characteristics of the Solar Gravity Mode Frequencies

- Physics
- 2007

Gravity modes are the best probes for studying the dynamics of the solar radiative zone, and especially the nuclear core. This paper shows how specific physical processes influence the theoretical… Expand

Sensitivity of helioseismic gravity modes to the dynamics of the solar core

- Physics
- 2008

Context. The dynamics of the solar core cannot be properly constrained through the analysis of acoustic oscillation modes. Gravity modes are necessary to understand the structure and dynamics of the… Expand

Probing the internal solar magnetic field through g modes

- Physics
- 2007

The observation of g-mode candidates by the Solar and Heliospheric Observatory (SOHO) mission opens the possibility of probing the internal structure of the solar radiative zone (RZ) and the solar… Expand

Solar Oscillations and Convection. II. Excitation of Radial Oscillations

- Physics
- 2000

Solar p-mode oscillations are excited by the work of stochastic, nonadiabatic, pressure fluctuations on the compressive modes. We evaluate the expression for the radial mode excitation rate derived… Expand

Stochastic excitation of nonradial modes II. Are solar asymptotic gravity modes detectable

- Physics
- 2008

Detection of solar gravity modes remains a major challenge to our understanding of the innerparts of the Sun. Their frequencies would enable the derivation of constraints on the core physical… Expand

Observational Searches for Solar g-modes: Some Theoretical Considerations

- Physics
- 1995

We argue that the solar g-modes are unlikely to have caused the discrete peaks in the power spectrum of the solar wind flux observed by Thomson et al. (1995). The lower limit to the energy of… Expand

Theoretical Prediction of an Observed Solar g-Mode

- Physics
- 2004

This Letter considers the weak but persistent radial velocity variations measured by the Global Oscillations at Low Frequencies instrument on the Solar and Heliospheric Observatory satellite at 75.55… Expand

Solar seismology. II - The stochastic excitation of the solar p-modes by turbulent convection

- Physics
- 1977

We test the hypothesis that the solar rho-modes are stabilized by damping due to turbulent viscosity in the convective zone. Starting from the assumption that the modes are stable, we calculate… Expand

Solar seismology. I - The stability of the solar p-modes

- Physics
- 1977

We investigate the stability of the radial p-modes of the Sun by computing nonadiabatic eigen-values and e1genfunctions for a solar envelope model which extends from an inner radius r ≈ 0.3 R_☉ out… Expand

SOLAR g-MODE OSCILLATIONS: EXPERIMENTAL DETECTION EFFORTS AND THEORETICAL ESTIMATES

- Physics
- 2002

In the early days of helioseismology, around 1975, independent detections of an oscillation with a period of 160 min in solar spectral line-shift data caused very substantial interest: it was… Expand