Prospects for the Detection of the Deep Solar Meridional Circulation

Abstract

We perform helioseismic holography to assess the noise in p-mode travel-time shifts which would form the basis of inferences of large-scale flows throughout the solar convection zone. We also derive the expected travel times from a parameterized return (equatorward) flow component of the meridional circulation at the base of the convection zone from forward models under the assumption of the ray and Born approximations. From estimates of the signal-to-noise ratio for measurements focused near the base of the convection zone, we conclude that the helioseismic detection of the deep meridional flow including the return component may not be possible using data spanning an interval less than a solar cycle.

References in corpus (4)

• Subsurface Meridional Circulation in the Active Belts
• Linear Sensitivity of Helioseismic Travel Times to Local Flows
• Meridional Circulation and Global Solar Oscillations
• Helioseismic Holography of Simulated Solar Convection and Prospects for the Detection of Small-Scale Subsurface Flows

Cited by in corpus (22)

• Detection of Equatorward Meridional Flow and Evidence of Double-Cell Meridional Circulation inside the Sun
• Local Helioseismology: Three Dimensional Imaging of the Solar Interior
• Effects of Asymmetric Flows in Solar Convection on Oscillation Modes
• Meridional Circulation During the Extended Solar Minimum: Another Component of the Torsional Oscillation?
• Seismic Constraints on Interior Solar Convection
• Solar meridional circulation from twenty-one years of SOHO/MDI and SDO/HMI observations: Helioseismic travel times and forward modeling in the ray approximation
• Helioseismology of Pre-Emerging Active Regions I: Overview, Data, and Target Selection Criteria
• Helioseismic detection of deep meridional flow
• Helioseismology with Solar Orbiter
• Helioseismic inversion to infer depth profile of solar meridional flow using spherical Born kernels
• Full Waveform Inversion of Solar Interior Flows
• Comparison of acoustic travel-time measurement of solar meridional circulation from SDO/HMI and SOHO/MDI
• Solar wave-field simulation for testing prospects of helioseismic measurements of deep meridional flows
• Signal and noise in helioseismic holography
• A Helioseismic Survey of Near-surface Flows Around Active Regions and their Association with Flares
• Helioseismic Holography of an Artificial Submerged Sound Speed Perturbation and Implications for the Detection of Pre-Emergence Signatures of Active Regions
• Helioseismic Modeling of Background Flows
• Forward Modeling Helioseismic Signatures of One- and Two-cell Meridional Circulation
• Probabilistic Inversions for Time-Distance Helioseismology
• Validating Forward Modeling and Inversions of Helioseismic Holography Measurements
• Quantitative passive imaging by iterative holography: The example of helioseismic holography
• Constraining Global Solar Models through Helioseismic Analysis