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The quest for the solar g modes
- Source :
- Astronomy and Astrophysics Review, Astronomy and Astrophysics Review, Springer Verlag, 2010, 18, Issue 1-2, pp.197-277. ⟨10.1007/s00159-009-0027-z⟩
- Publication Year :
- 2009
- Publisher :
- arXiv, 2009.
-
Abstract
- Solar gravity modes (or g modes) -- oscillations of the solar interior for 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 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 conditions in the core. Owing to the existence of the convection zone, the g modes have very low amplitudes at photospheric levels, which makes the modes extremely hard to detect. In this paper, we review the current state of play regarding attempts to detect g modes. We review the theory of g modes, including theoretical estimation of the g-mode frequencies, amplitudes and damping rates. Then we go on to discuss the techniques that have been used to try to detect g modes. We review results in the literature, and finish by looking to the future, and the potential advances that can be made -- from both data and data-analysis perspectives -- to give unambiguous detections of individual g modes. The review ends by concluding that, at the time of writing, there is indeed a consensus amongst the authors that there is currently no undisputed detection of solar g modes.<br />Comment: 71 pages, 18 figures, accepted by Astronomy and Astrophysics Review
- Subjects :
- Physics
Buoyancy
010504 meteorology & atmospheric sciences
Structure (category theory)
FOS: Physical sciences
Astronomy and Astrophysics
Astrophysics
engineering.material
Eigenfunction
01 natural sciences
Core (optical fiber)
Theoretical physics
Amplitude
Solar core
Convection zone
Astrophysics - Solar and Stellar Astrophysics
13. Climate action
Space and Planetary Science
0103 physical sciences
engineering
Restoring force
010303 astronomy & astrophysics
Solar and Stellar Astrophysics (astro-ph.SR)
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 09354956 and 14320754
- Database :
- OpenAIRE
- Journal :
- Astronomy and Astrophysics Review, Astronomy and Astrophysics Review, Springer Verlag, 2010, 18, Issue 1-2, pp.197-277. ⟨10.1007/s00159-009-0027-z⟩
- Accession number :
- edsair.doi.dedup.....119f5830b089c579c885216f07f53664
- Full Text :
- https://doi.org/10.48550/arxiv.0910.0848