Small-scale solar magnetic fields

Abstract

As we resolve ever smaller structures in the solar atmosphere, it has become clear that magnetism is an important component of those small structures. Small-scale magnetism holds the key to many poorly understood facets of solar magnetism on all scales, such as the existence of a local dynamo, chromospheric heating, and flux emergence, to name a few. Here, we review our knowledge of small-scale photospheric fields, with particular emphasis on quiet-sun field, and discuss the implications of several results obtained recently using new instruments, as well as future prospects in this field of research.

43 pages, 18 figures

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• Observational Evidence for Small-Scale Mixture of Weak and Strong Fields in the Quiet Sun
• Near-IR internetwork spectro-polarimetry at different heliocentric angles
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Cited by in corpus (79)

• Solar Irradiance Variability and Climate
• A new approach to long-term reconstruction of the solar irradiance leads to large historical solar forcing
• The Magnetic Field in the Solar Atmosphere
• Solar fine-scale structures. I. Spicules and other small-scale, jet-like events at the chromospheric level: observations and physical parameters
• Bipolar Magnetic Regions on the Sun: Global Analysis of the SOHO/MDI Data Set
• Magnetic Flux Transport at the Solar Surface
• Ellerman Bombs at high resolution: I. Morphological evidence for photospheric reconnection
• Probing quiet Sun magnetism using MURaM simulations and Hinode/SP results: support for a local dynamo
• Critical Science Plan for the Daniel K. Inouye Solar Telescope (DKIST)
• The Sun's small-scale magnetic elements in Solar Cycle 23
• The Velocity Distribution of Solar Photospheric Magnetic Bright Points
• The Area Distribution of Solar Magnetic Bright Points
• Analysis of Quiet-Sun Internetwork Magnetic Fields Based on Linear Polarization Signals
• Solar magnetoconvection and small-scale dynamo: Recent developments in observation and simulation
• Solar velocity references from 3D HD photospheric models
• Slender Ca II H Fibrils Mapping Magnetic Fields in the Low Solar Chromosphere
• A novel investigation of the small-scale magnetic activity of the quiet Sun via the Hanle effect in the Sr I 4607 Å line
• The role of the Fraunhofer lines in solar brightness variability
• Statistical Analysis of Small Ellerman Bomb Events
• Imaging Spectropolarimetry with IBIS II: on the fine structure of G-band bright features
• Numerical simulations of quiet Sun magnetic fields seeded by Biermann battery
• Characterising motion types of G-band bright points in the quiet Sun
• Modelling total solar irradiance since 1878 from simulated magnetograms
• Estimation of the magnetic flux emergence rate in the quiet Sun from Sunrise data
• Reconstructed and measured total solar irradiance: Is there a secular trend between 1978 and 2003?
• Scaling laws for magnetic fields on the quiet Sun
• The formation and disintegration of magnetic bright points observed by Sunrise/IMaX
• Spatial deconvolution of spectropolarimetric data: an application to quiet Sun magnetic elements
• Inclinations of small quiet-Sun magnetic features based on a new geometric approach
• Probing deep photospheric layers of the quiet Sun with high magnetic sensitivity
• Dynamic properties of bright points in an active region
• Solar surface and atmospheric dynamics: The Photosphere
• Solar small-scale dynamo and polarity of sunspot groups
• Tracking Magnetic Bright Point Motions Through the Solar Atmosphere
• Ubiquitous quiet-Sun jets
• Comparison of Nonlinear Force-free Field and Potential Field in the Quiet Sun
• The Sun at millimeter wavelengths -- II. Small-scale dynamic events in ALMA Band 3
• Is the small-scale magnetic field correlated with the dynamo cycle?
• Statistical evolution of quiet-Sun small scale magnetic features using Sunrise observations
• The Quiet-Sun Photosphere and Chromosphere
• Automatic Method for Identifying Photospheric Bright Points and Granules Observed by Sunrise
• Hall instability of solar flux tubes
• The statistical distribution of magnetic field strength in G-band bright points
• Co-spatial velocity and magnetic swirls in the simulated solar photosphere
• Oscillation Power in Sunspots and Quiet Sun from Hankel Analysis Performed on SDO/HMI and SDO/AIA Data
• Probing photospheric magnetic fields with new spectral line pairs
• Height variation of magnetic field and plasma flows in isolated bright points
• Magnetic diffusion driven shear instability of solar flux tubes
• Nonlinear Force-Free Field Modeling of the Solar Magnetic Carpet and Comparison with SDO/HMI and Sunrise/IMaX Observations
• Temporal relation between quiet-Sun transverse fields and the strong flows detected by IMaX/SUNRISE
• Photospheric magnetic topology of a north polar region
• The solar internetwork. III. Unipolar versus bipolar flux appearance
• Long-term trends of magnetic bright points: I. Number of MBPs at disc centre
• Center-to-limb variation of the area covered by magnetic bright points in the quiet Sun
• Intense geomagnetic storm during Maunder minimum possibly by a quiescent filament eruption
• Detection of spatially structured scattering polarization of Sr I $4607.3$ Å\ with the Fast Solar Polarimeter
• Linear Polarization Features in the Quiet-Sun Photosphere: Structure and Dynamics
• Observations of solar scattering polarization at high spatial resolution
• Solar Photospheric Spectrum Microvariability I. Theoretical searches for proxies of radial-velocity jittering
• Dispersion of the solar magnetic flux in undisturbed photosphere as derived from SDO/HMI data
• Structure and dynamics of the internetwork solar chromosphere: results of a small-scale dynamo simulation
• Acceleration of Type 2 Spicules in the Solar Chromosphere - 2: Viscous Braking and Upper Bounds on Coronal Energy Input
• Structures in compressible magnetoconvection and the nature of umbral dots
• Surface Wave Propagation in non--ideal plasmas
• The polarization signature of photospheric magnetic fields in 3D MHD simulations and observations at disk center
• Observed Effect of Magnetic Fields on the Propagation of Magnetoacoustic Waves in the Lower Solar Atmosphere
• A New Approach to Solar Flare Prediction
• Small-scale Dynamo in Cool Stars III. Changes in the photospheres of F3V to M0V stars
• Two-dimensional segmentation of small convective patterns in radiation hydrodynamics simulations
• Analysis of unresolved photospheric magnetic field structure using Fe I 6301 and 6302 lines
• Viscous Heating and Instabilities in the Partially Ionized Solar Atmosphere
• Size matters
• Turbulent magnetic energy spectrum and the cancellation function of solar photospheric magnetic fields
• Centennial solar EUV irradiance from ionospheric currents: Varying sunspot-EUV irradiance relation and modified spot-facula ratio
• Acoustic emission from magnetic flux tubes in the solar network
• Solar photospheric spectrum microvariability III. Radial velocities and line profiles in magnetic active-region granulation
• Effects of spatial resolution on inferences of atmospheric quantities from simulations
• Cause of chromospheric opposite polarity intrusions discovered in Sunrise III/SCIP data: MURaM-ChE simulations point to twisted flux ropes
• Using the Stokes V widths of Fe I lines for diagnostics of the intrinsic solar photospheric magnetic field