Influence of ambipolar and Hall effects on vorticity in 3D simulations of magneto-convection

Abstract

This paper presents the results of the analysis of 3D simulations of solar magneto-convection that include the joint action of the ambipolar diffusion and the Hall effect. Three simulation-runs are compared: one including both ambipolar diffusion and Hall effect; one including only ambipolar diffusion; and one without any of these two effects. The magnetic field is amplified from initial field to saturation level by the action of turbulent local dynamo. In each of these cases, we study 2 hours of simulated solar time after the local dynamo reaches the saturation regime. We analyze the power spectra of vorticity, of magnetic field fluctuations and of the different components of the magnetic Poynting flux responsible for the transport of vertical or horizontal perturbations. Our preliminary results show that the ambipolar diffusion produces a strong reduction of vorticity in the upper chromospheric layers and that it dissipates the vortical perturbations converting them into thermal energy. The Hall effect acts in the opposite way, strongly enhancing the vorticity. When the Hall effect is included, the magnetic field in the simulations becomes, on average, more vertical and long-lived flux tube-like structures are produced. We trace a single magnetic structure to study its evolution pattern and the magnetic field intensification, and their possible relation to the Hall effect.

arXiv commentto appear in Philosophical Transactions of the Royal Society A, issue "High resolution wave dynamics in the lower solar atmosphere"

References in corpus (44)

• A Substantial Amount of Hidden Magnetic Energy in the Quiet Sun
• Convectively driven vortex flows in the Sun
• Heating of the magnetized solar chromosphere by partial ionization effects
• Hall magnetohydrodynamics of partially ionized plasmas
• Solar Oscillations and Convection: II. Excitation of Radial Oscillations
• Partially Ionized Plasmas in Astrophysics
• Small-scale swirl events in the quiet Sun chromosphere
• 2D Radiative MHD Simulations of the Importance of Partial Ionization in the Chromosphere
• Vorticity in the solar photosphere
• Fluid description of multi-component solar partially ionized plasma
• Magneto-acoustic waves in sunspots: first results from a new 3D nonlinear magnetohydrodynamic code
• Evidence for the photospheric excitation of incompressible chromospheric waves
• Alfvén waves in simulations of solar photospheric vortices
• Solar Oscillations and Convection: I. Formalism for Radial Oscillations
• The horizontal internetwork magnetic field: numerical simulations in comparison to observations with Hinode
• Three-dimensional simulations of solar magneto-convection including effects of partial ionization
• Vortices, shocks, and heating in the solar photosphere: effect of a magnetic field
• Vortices in simulations of solar surface convection
• Stability of rotating magnetized jets in the solar atmosphere. I. Kelvin-Helmholtz instability
• Two-dimensional Radiative Magnetohydrodynamic Simulations of Partial Ionization in the Chromosphere. II. Dynamics and Energetics of the Low Solar Atmosphere
• Ubiquitous Solar Eruptions Driven by Magnetized Vortex Tubes
• Heating of the partially ionized solar chromosphere by waves in magnetic structures
• Magnetohydrodynamics of the Weakly Ionized Solar Photosphere
• On the plasma flow inside magnetic tornadoes on the Sun
• Evidence for rotational motions in the feet of a quiescent solar prominence
• Mechanisms for MHD Poynting flux generation in simulations of solar photospheric magneto-convection
• Dynamics of Magnetized Vortex Tubes in the Solar Chromosphere
• Simulations Show that Vortex Flows could Heat the Chromosphere in Solar Plage
• Determining the Magnetization of the Quiet Sun Photosphere from the Hanle Effect and Surface Dynamo Simulations
• Alfvén Waves in the Structured Solar Corona
• Internetwork magnetic field as revealed by 2D inversions
• Numerical simulations of quiet Sun magnetic fields seeded by Biermann battery
• MHDSTS: a new explicit numerical scheme for simulations of partially ionised solar plasma
• Nonequilibrium ionization and ambipolar diffusion in solar magnetic flux emergence processes
• Vortex Flows in the Solar Chromosphere -- I. Automatic detection method
• Fast-to-Alfvén Mode Conversion Mediated by Hall Current. I. Cold Plasma Model
• First simultaneous SST/CRISP and IRIS observations of a small-scale quiet Sun vortex
• Waves in the solar photosphere
• Spatial distribution and statistical properties of small-scale convective vortex-like motions in a quiet Sun region
• Fast-to-Alfvén mode conversion mediated by Hall current. II Application to the solar atmosphere
• Magnetic shocks and substructures excited by torsional Alfvén wave interactions in merging expanding flux tubes
• Joint action of Hall and ambipolar effects in 3D magneto-convection simulations of the quiet Sun. I. Dissipation and generation of waves
• Co-spatial velocity and magnetic swirls in the simulated solar photosphere
• Chromospheric heating and structure as determined from high resolution 3D simulations

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