MHS sunspot model from deep sub-photospheric to chromospheric layers

Abstract

In order to understand the influence of magnetic fields on the propagation properties of waves, as derived from different local helioseismology techniques, forward modeling of waves is required. Such calculations need a model in magnetohydrostatic equilibrium as initial atmosphere to propagate oscillations through it. We provide a method to construct such a model in equilibrium for a wide range of parameters to be used for simulations of artificial helioseismologic data. The method combine the advantages of self-similar solutions and current-distributed models. A set of models is developed by numerical integration of magnetohydrostatic equations from the sub-photospheric to chromospheric layers.

accepted by ApJ

References in corpus (4)

• Seismic Halos Around Active Regions: An MHD Theory
• Effect of suppressed excitation on the amplitude distribution of 5-min oscillations in sunspots
• Scattering of acoustic waves by a magnetic cylinder
• Forward modelling of sub-photospheric flows for time-distance helioseismology

Cited by in corpus (35)

• Magnetic Structure of Sunspots
• Numerical simulations of conversion to Alfven waves in sunspots
• Magneto-acoustic waves in sunspots: first results from a new 3D nonlinear magnetohydrodynamic code
• Modeling the Subsurface Structure of Sunspots
• Waves in the lower solar atmosphere: the dawn of next-generation solar telescopes
• Theoretical modeling of propagation of magneto-acoustic waves in magnetic regions below sunspots
• Sunspot seismic halos generated by fast MHD wave refraction
• Three-dimensional numerical simulations of fast-to-Alfven conversion in sunspots
• Constructing semi-empirical sunspot models for helioseismology
• Synthetic observations of wave propagation in a sunspot umbra
• Magneto-acoustic wave energy from numerical simulations of an observed sunspot umbra
• Properties of high-frequency wave power halos around active regions: an analysis of multi-height data from HMI and AIA onboard SDO
• Local Helioseismology of Sunspots: Current Status and Perspectives (Invited Review)
• Magneto-static modelling from SUNRISE/IMaX: Application to an active region observed with SUNRISE II
• Magnetohydrodynamic waves driven by p-modes
• Inversions of synthetic umbral flashes: effects of the scanning time on the inferred atmospheres
• 3D simulations of realistic power halos in magneto-hydrostatic sunspot atmospheres: linking theory and observation
• MHD wave refraction and the acoustic halo effect around solar active regions - a 3D study
• Helioseismic Holography of Simulated Sunspots: dependence of the travel time on magnetic field strength and Wilson depression
• Modeling the thermal conduction in the solar atmosphere with the code MANCHA3D
• Directional Time-Distance Probing of Model Sunspot Atmospheres
• Helioseismic holography of simulated sunspots: magnetic and thermal contributions to travel times
• MHD waves in sunspots
• Dependence of sunspot photospheric waves on the depth of the source of solar $p-$modes
• Evaluation of the capability of local helioseismology to discern between monolithic and spaghetti sunspot models
• Local helioseismology of sunspot regions: comparison of ring-diagram and time-distance results
• Ambipolar Diffusion in the Lower Solar Atmosphere: MHD Simulations of a Sunspot
• Inversions of synthetic umbral flashes: selection of wavelength sampling
• Asteroseismology and Magnetic Cycles
• Probing sunspots with two-skip time-distance helioseismology
• The role of the Lorentz force in sunspot equilibrium
• Magnetic fingerprints of solar and stellar oscillations
• Chromospheric and photospheric properties of sunspots as inferred from Stokes inversions under magneto-hydrostatic and non-local-thermodynamic equilibrium
• A semi-automated method to reveal the evolution of each sunspot group in a solar cycle
• Magneto-acoustic waves in sunspots from observations and numerical simulations