Stellar Winds

Astrophysics and space science library, Journal Year: 2025, Volume and Issue: unknown, P. 159 - 192

Published: Jan. 1, 2025

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Stellar Chromospheres: The Source of UV Emission

Astrophysics and space science library, Journal Year: 2025, Volume and Issue: unknown, P. 49 - 79

Published: Jan. 1, 2025

Language: Английский

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Potential Flow Theory Formulation of Parker’s Unsteady Solar Wind Model and Nonlinear Stability of Parker’s Steady Solar Wind Solution

The Astrophysical Journal, Journal Year: 2025, Volume and Issue: 985(1), P. 3 - 3

Published: May 12, 2025

Abstract The purpose of this paper is to present a novel optimal theoretical framework based on potential flow theory in ideal gas dynamics, which provides smooth extrapolation Parker’s steady solar wind model the unsteady case. viability illustrated by providing first ever systematic formulation successfully address long-standing open issue regularization singularity associated with Parker sonic critical point (where velocity equals speed sound gas) linear stability problem solution. This development involves going outside perturbation and incorporating dominant nonlinearities dynamical system, hence an appropriate nonlinear recipe regularize singularity. solution found also extend neighborhood upon analyzing concomitant problem. new given here seems, therefore, have provide viable basis for future formulations addressing various aspects version model.

Language: Английский

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Formation of solar spicules due to high-frequency perturbation in the solar photosphere

Advances in Space Research, Journal Year: 2025, Volume and Issue: unknown

Published: May 1, 2025

Language: Английский

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