On the generation of solar spicules and Alfvénic waves

Abstract

In the lower solar atmosphere, the chromosphere is permeated by jets known as spicules, in which plasma is propelled at speeds of 50 to 150 kilometers per second into the corona. The origin of the spicules is poorly understood, although they are expected to play a role in heating the million-degree corona and are associated with Alfvénic waves that help drive the solar wind. We compare magnetohydrodynamic simulations of spicules with observations from the Interface Region Imaging Spectrograph and the Swedish 1-m Solar Telescope. Spicules are shown to occur when magnetic tension is amplified and transported upward through interactions between ions and neutrals or ambipolar diffusion. The tension is impulsively released to drive flows, heat plasma (through ambipolar diffusion), and generate Alfvénic waves.

28 pages, 10 figures

References in corpus (11)

• The Solar Optical Telescope for the Hinode Mission: An Overview
• Observing the Roots of Solar Coronal Heating - in the Chromosphere
• CRISPRED: A data pipeline for the CRISP imaging spectropolarimeter
• An Interface Region Imaging Spectrograph first view on Solar Spicules
• RH 1.5D: a massively parallel code for multi-level radiative transfer with partial frequency redistribution and Zeeman polarisation
• Gamma Ray Bursts Are Observed Off-Axis
• Statistical properties of the Disk Counterparts of Type II Spicules from simultaneous observations of RBEs in Ca II 8542 and Hα
• Rayleigh-Taylor instability in prominences from numerical simulations including partial ionization effects
• Are Chromospheric Nanoflares a Primary Source of Coronal Plasma?
• A Microfilament-Eruption Mechanism for Solar Spicules
• Global multifluid simulations of the magnetorotational instability in radially stratified protoplanetary disks

Cited by in corpus (83)

• Generation of Solar Spicules and Subsequent Atmospheric Heating
• A solar source of Alfvénic magnetic field switchbacks: {\em in situ} remnants of magnetic funnels on supergranulation scales
• The European Solar Telescope
• Three-dimensional Magnetohydrodynamic Simulation of the Formation of Solar Chromospheric Jets with Twisted Magnetic Field Lines
• Probing the physics of the solar atmosphere with the Multi-slit Solar Explorer (MUSE): I. Coronal Heating
• Two-dimensional Radiative Magnetohydrodynamic Simulations of Partial Ionization in the Chromosphere. II. Dynamics and Energetics of the Low Solar Atmosphere
• Waves in the lower solar atmosphere: the dawn of next-generation solar telescopes
• Mapping Solar Magnetic Fields from the Photosphere to the Base of the Corona
• Surges and Si IV bursts in the solar atmosphere. Understanding IRIS and SST observations through RMHD experiments
• Ion-neutral interactions and non-equilibrium ionization in the solar chromosphere
• Hi-C 2.1 Observations of Jetlet-like Events at Edges of Solar Magnetic Network Lane
• Upflows in the upper solar atmosphere
• IRIS observations of short-term variability in moss associated with transient hot coronal loops
• What causes the high apparent speeds in chromospheric and transition region spicules on the Sun?
• Stereoscopy of extreme UV quiet Sun brightenings observed by Solar Orbiter/EUI
• Successive Two-sided loop Jets Caused by Magnetic Reconnection between Two adjacent Filamentary Threads
• A Comprehensive Radiative Magnetohydrodynamics Simulation of Active Region Scale Flux Emergence from the Convection Zone to the Corona
• Spicules and downflows in the solar chromosphere
• Nonequilibrium ionization and ambipolar diffusion in solar magnetic flux emergence processes
• A Magnetic Reconnection model for Hot Explosions in the Cool Atmosphere of the Sun
• A solar coronal loop in a box: Energy generation and heating
• Ambipolar diffusion in the Bifrost code
• Coronal Mini-jets in an Activated Solar Tornado-like Prominence
• Stirring the Base of the Solar Wind: On Heat Transfer and Vortex Formation
• Spatio-temporal analysis of chromospheric heating in a plage region
• Polymeric jets throw light on the origin and nature of the forest of solar spicules
• On the origin of the magnetic energy in the quiet solar chromosphere
• Possible Production of Solar Spicules by Microfilament Eruptions
• Numerical simulations and observations of Mg II in the solar chromosphere
• The impact of multi-fluid effects in the solar chromosphere on the ponderomotive force under LTE and NEQ ionization conditions
• High-resolution observations of the solar photosphere, chromosphere and transition region. A database of coordinated IRIS and SST observations
• On the relation between transition region network jets and coronal plumes
• Estimating the temperature and density of a spicule from 100 GHz data obtained with ALMA
• On the formation of solar wind & switchbacks, and quiet Sun heating
• The chromosphere underneath a Coronal Bright Point
• Evidence of multithermal nature of spicular downflows. Impact on solar atmospheric heating
• The Formation of IRIS Diagnostics. IX. The Formation of the C I 135.58 Line in the Solar Atmosphere
• Small-scale solar jet formation and their associated waves and instabilities
• Hi-C 2.1 Observations of Small-Scale Miniature-Filament-Eruption-Like Cool Ejections in Active Region Plage
• Swirls in the Solar Corona
• Two-fluid numerical model of chromospheric heating and plasma outflows in a quiet-Sun
• Solar Spicules, Filigrees and Solar Wind Switchbacks
• Rapid Evolution of Type II Spicules Observed in Goode Solar Telescope On-Disk H-alpha Images
• Magnetic filed dynamics and varying plasma emission in large coronal loops
• Role of Longitudinal Waves in Alfvén-wave-driven Solar Wind
• High-resolution wave dynamics in the lower solar atmosphere
• Spicule jets in the solar atmosphere modeled with resistive MHD and thermal conduction
• Contribution of spicules to solar coronal emission
• Modelling of asymmetric nanojets in coronal loops
• The fine-scale structure of polar coronal holes
• Modelling the connection between propagating disturbances and solar spicules
• Velocity Response of the Observed Explosive Events in the Lower Solar Atmosphere: I. Formation of the Flowing Cool Loop System
• Dependence of Spicule Properties on the Magnetic Field -- Results from Magnetohydrodynamics Simulations
• The formation and dissipation of current sheets and shocks due to compressive waves in a stratified atmosphere containing a magnetic null
• A novel inversion method to determine the coronal magnetic field including the impact of bound-free absorption
• Fast magnetic wave could heat the solar low-beta chromosphere
• Fine-Scale Features of the Sun's Atmosphere: Spicules and Jets
• Statistical properties of Hα jets in the polar coronal hole and their implications in coronal activities
• Doppler shifts of spectral lines formed in the solar transition region and corona
• Response of the solar atmosphere to flux emergence: With emergence-driven prominence formation
• Probing chromospheric fine structures with a Hα proxy using MURaM-ChE
• The Relation between Solar Spicules and Magnetohydrodynamic Shocks
• The dark side of penumbral microjets: Observations in Hα
• Small-scale dynamic phenomena associated with interacting fan-spine topologies: quiet-Sun Ellerman bombs, UV brightenings, and chromospheric inverted-Y-shaped jets
• Dynamic kink instability and transverse motions of solar spicules
• Multi-fluid Simulation of Solar Chromospheric Turbulence and Heating Due to the Thermal Farley-Buneman Instability
• Rapid Blue- and Red-shifted Excursions in H$\alpha$ line profiles synthesized from realistic 3D MHD simulations
• Modeling of Chromospheric Features and Dynamics in Solar Plage
• Infrared diagnostics of the solar magnetic field with Mg I 12 $\mu$m lines: forward-model results
• Chromosphere of the quiet sun -- I. Shock and current-sheet dynamics and heating
• Hot prominence spicules launched from turbulent cool solar prominences
• Ambipolar diffusion: Self-similar solutions and MHD code testing. Cylindrical symmetry
• Spicules in IRIS Mg II Observations: Automated Identification
• Multiwavelength Study of on-disk Coronal Hole Jets with IRIS and SDO observations
• Quiet Sun Ellerman bombs as a possible proxy for reconnection-driven spicules
• Statistical properties of spicules in MURaM-ChE
• Bright Dots and Coronal Plume Formation in Sunspot Penumbra
• ALMA Observations of Solar Spicules in a Polar Coronal Hole
• Numerical Simulations of Two-Fluid Magnetoacoustic Waves in the Solar Atmosphere
• On the Relationship between Solar Spicules and Propagating Coronal Disturbances: The Role of Shocks
• Influence of the magnetic field topology in the evolution of small-scale two-fluid jets in the solar atmosphere
• Decomposing wave activity in the solar atmosphere: Shocks, jets and swirls in the quiet Sun
• Parallel plasma loops and the energization of the solar corona