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Nonlinear interactions among solar acoustic modes

1989; IOP Publishing; Volume: 342; Linguagem: Inglês

10.1086/167616

1538-4357

Pawan Kumar, Peter Goldreich,

Solar and Space Plasma Dynamics

view Abstract Citations (78) References (18) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Nonlinear Interactions among Solar Acoustic Modes Kumar, Pawan ; Goldreich, Peter Abstract The rates at which nonlinear interactions transfer energy among the normal modes of a plane-parallel, stratified atmosphere are evaluated. It is shown that every p-mode in the 5-minute band is involved in many near-resonant triplets, and, as a consequence, the energy transfer rates are independent of the mode line widths. It is also found that nonlinear mode coupling cannot limit the growth of overstable p-modes, which favors the hypothesis that the sun's p-modes are stochastically excited by turbulent convection. Publication: The Astrophysical Journal Pub Date: July 1989 DOI: 10.1086/167616 Bibcode: 1989ApJ...342..558K Keywords: Acoustic Frequencies; Energy Transfer; Helioseismology; Solar Atmosphere; Solar Oscillations; Coupled Modes; Hamiltonian Functions; Solar Physics; CONVECTION; SUN: ATMOSPHERE; SUN: ATMOSPHERIC MOTIONS; SUN: OSCILLATIONS full text sources ADS |