Publications (10)
Meridional Circulation During the Extended Solar Minimum: Another Component of the Torsional Oscillation?
I. Gonzalez Hernandez, R. Howe, R. Komm +1
We show here a component of the meridional circulation developing at medium-high latitudes (40-50 degrees) before the new solar cycle starts. Like the torsional oscillation of the…
Signatures of Solar Cycle 25 in Subsurface Zonal Flows
R. Howe, F. Hill, R. Komm +5
The pattern of migrating zonal flow bands associated with the solar cycle, known as the torsional oscillation, has been monitored with continuous global helioseismic observations b…
A note on the torsional oscillation at solar minimum
R. Howe, J. Christensen-Dalsgaard, F. Hill +3
We examine the evolution of the zonal flow pattern in the upper solar convection zone during the current extended solar minimum, and compare it with that during the previous minimu…
Improving the Understanding of Subsurface Structure and Dynamics of Solar Active Regions (A white paper submitted to the decadal survey for solar and space Physics (Heliophysics) -- SSPH 2024-2033)
S. C. Tripathy, K. Jain, D. Braun +14
The goal of helioseismology is to provide accurate information about the Sun's interior from the observations of the wave field at its surface. In the last three decades, both glob…
Parametrizing the time-variation of the "surface term" of stellar p-mode frequencies: application to helioseismic data
R. Howe, S. Basu, G. R. Davies +4
The solar-cyle variation of acoustic mode frequencies has a frequency dependence related to the inverse mode inertia. The discrepancy between model predictions and measured oscilla…
Modeling the Subsurface Structure of Sunspots
H. Moradi, C. Baldner, A. C. Birch +19
While sunspots are easily observed at the solar surface, determining their subsurface structure is not trivial. There are two main hypotheses for the subsurface structure of sunspo…