3 papers
astro-ph.SR2026
Oscillatory Phase and Acoustic Travel-Time Inconsistencies Measured between SDO/HMI and GONG Dopplergrams
Junwei Zhao, Ruizhu Chen, S. P. Rajaguru +1
We investigate the causes of discrepancies in meridional-circulation measurements derived from the helioseismic observations by the Helioseismic and Magnetic Imager onboard the Sol…
astro-ph.SR2025
Solar-cycle variations in meridional flows and rotational shear within the Sun's near-surface shear layer
Anisha Sen, S. P. Rajaguru, Abhinav Govindan Iyer +3
Using solar-cycle long helioseismic measurements of meridional and zonal flows in the near-surface shear layer (NSSL) of the Sun, we study their spatio-temporal variations and conn…
astro-ph.SR2025
Hemispheric Magnetic Asymmetry and Cross-Equatorial Circulation Cells within the Sun's Near-Surface Shear Layer
Anisha Sen, S. P. Rajaguru, Ruizhu Chen +2
Using time-distance helioseismic measurements of meridional flow in the near-surface shear layer over a period of 14 years, starting from May 2010, we probe the depth structure and…