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Solar Cycle Variations in Meridional Flows and Rotational Shear within the Sun’s Near-surface Shear Layer

  • Authors: Anisha Sen, S. P. Rajaguru, Abhinav Govindan Iyer, Ruizhu Chen, Junwei Zhao, Shukur Kholikov

Anisha Sen et al 2025 The Astrophysical Journal Letters 984 .

  • Provider: AAS Journals

Caption: Figure 1.

Changes (cycle 24 subtracted) in dimensionless radial gradient of rotation rate, ﹩\delta ({\rm{\partial }}\,{\rm{log}}\,{\rm{\Omega }}/{\rm{\partial }}\,{\rm{log}}\,r)﹩, from HMI global helioseismic rotation inversions (top panels) and those in the meridional flow, δUθ (middle and bottom panels from HMI and GONG, respectively) as a function of latitude and time at 0.99 R (left) and at 0.95 R (right). Sunspot locations are overplotted as black dots. The two vertical dashed lines mark the cycle 24 maximum (2014) and minimum (2020).

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