Alfven Waves in the Lower Solar Atmosphere

Abstract

We report the detection of oscillatory phenomena associated with a large bright-point group that is 430,000 square kilometers in area and located near the solar disk center. Wavelet analysis reveals full-width half-maximum oscillations with periodicities ranging from 126 to 700 seconds originating above the bright point and significance levels exceeding 99%. These oscillations, 2.6 kilometers per second in amplitude, are coupled with chromospheric line-of-sight Doppler velocities with an average blue shift of 23 kilometers per second. A lack of cospatial intensity oscillations and transversal displacements rules out the presence of magneto-acoustic wave modes. The oscillations are a signature of Alfven waves produced by a torsional twist of +/-22 degrees. A phase shift of 180 degrees across the diameter of the bright point suggests that these torsional Alfven oscillations are induced globally throughout the entire brightening. The energy flux associated with this wave mode is sufficient to heat the solar corona.

Published in Science 20-March-2009, 4 pages, 4 figures

References in corpus (7)

• Alfven Waves and Turbulence in the Solar Atmosphere and Solar Wind
• Three Dimensional MHD Wave Propagation and Conversion to Alfven Waves near the Solar Surface. I. Direct Numerical Solution
• Analytic approximate seismology of transversely oscillating coronal loops
• Observation of kink waves in solar spicules
• Energy flux of Alfven waves in weakly ionized plasma
• Observation of coronal loop torsional oscillation
• The structure and dynamics of a bright point as seen with Hinode, SoHO and TRACE

Cited by in corpus (197)

• MHD Waves and Coronal Seismology: an overview of recent results
• Coronal heating by MHD waves
• A Contemporary View of Coronal Heating
• The VAST Survey - I. Companions and the unexpected X-ray detection of B6-A7 stars
• Advances in Observing Various Coronal EUV Waves in the SDO Era and Their Seismological Applications (Invited Review)
• Multiwavelength studies of MHD waves in the solar chromosphere: An overview of recent results
• Observations of ubiquitous compressive waves in the Sun's chromosphere
• Oscillations and waves in solar spicules
• Persistent Doppler shift oscillations observed with HINODE/EIS in the solar corona: spectroscopic signatures of Alfvenic waves and recurring upflows
• Solar fine-scale structures. I. Spicules and other small-scale, jet-like events at the chromospheric level: observations and physical parameters
• Alfven Waves in the Solar Atmosphere
• Solar science with the Atacama Large Millimeter/submillimeter Array - A new view of our Sun
• On the prevalence of small-scale twist in the solar chromosphere and transition region
• Fine strand-like structure in the solar corona from MHD transverse oscillations
• Selective spatial damping of propagating kink waves due to resonant absorption
• Direct Imaging by SDO AIA of Quasi-periodic Fast Propagating Waves of ~2000 km/s in the Low Solar Corona
• Wave Heating of the Solar Atmosphere
• Vorticity in the solar photosphere
• Solar Magnetized "Tornadoes": Relation to Filaments
• Critical Science Plan for the Daniel K. Inouye Solar Telescope (DKIST)
• Alfvén Wave Dissipation in the Solar Chromosphere
• Evidence for the photospheric excitation of incompressible chromospheric waves
• The Influence of the Magnetic Field on Running Penumbral Waves in the Solar Chromosphere
• The Role of Stochastic Acceleration in the Prompt Emission of Gamma-Ray Bursts: Application to Hadronic Injection
• The European Solar Telescope
• The Source of Three-minute Magneto-acoustic Oscillations in Coronal Fans
• Review article: MHD wave propagation near coronal null points of magnetic fields
• Alfvén waves in simulations of solar photospheric vortices
• The role of torsional Alfven waves in coronal heating
• Evidence of Wave Damping at Low Heights in a Polar Coronal Hole
• Possible constraints on exoplanet magnetic field strengths from planet-star interaction
• Morphology, dynamics and plasma parameters of plumes and inter-plume regions in solar coronal holes
• Propagation of Alfvénic Waves From Corona to Chromosphere and Consequences for Solar Flares
• Are giant tornadoes the legs of solar prominences?
• Propagating MHD waves in coronal holes
• Waves in the lower solar atmosphere: the dawn of next-generation solar telescopes
• Observational Quantification of the Energy Dissipated by Alfvén Waves in a Polar Coronal Hole: Evidence that Waves Drive the Fast Solar Wind
• Heating effects from driven transverse and Alfvén waves in coronal loops
• 3D Simulations of Magnetohydrodynamic Waves in the Magnetized Solar Atmosphere
• The Origin of Type I Spicule Oscillations
• Propagating Wave Phenomena Detected in Observations and Simulations of the Lower Solar Atmosphere
• The generation and damping of propagating MHD kink waves in the solar atmosphere
• The First Ionization Potential Effect from the Ponderomotive Force: On the Polarization and Coronal Origin of the Alfven Waves
• Ensemble Simulations of Proton Heating in the Solar Wind via Turbulence and Ion Cyclotron Resonance
• Transverse Oscillations in Slender Ca II H Fibrils Observed with Sunrise/SuFI
• First comparison of wave observations from CoMP and AIA/SDO
• Energy transport and heating by torsional Alfvén waves propagating from the photosphere to the corona in the quiet Sun
• Torsional Alfvén waves in solar partially ionized plasma: effects of neutral helium and stratification
• High-frequency Oscillations in Small Magnetic Elements Observed with Sunrise/SuFI
• An Inside Look at Sunspot Oscillations with Higher Azimuthal Wavenumbers
• Inferring flare loop parameters with measurements of standing sausage modes
• Generation of Alfven Waves by Magnetic Reconnection
• Accelerating waves in polar coronal holes as seen by EIS and SUMER
• First direct observation of a torsional Alfvén oscillation at coronal heights
• Standing Sausage Modes In Nonuniform Magnetic Tubes: An Inversion Scheme For Inferring Flare Loop Parameters
• Contribution of mode coupling and phase-mixing of Alfvén waves to coronal heating
• Benchmarking Fast-to-Alfvén Mode Conversion in a Cold MHD Plasma. II. How to get Alfvén waves through the Solar Transition Region
• Unnoticed magnetic field oscillations in the very quiet Sun revealed by Sunrise/IMaX
• The Alfvénic nature of chromospheric swirls
• On the observations of rapid forced reconnection in the solar corona
• Alfvén Waves in the Structured Solar Corona
• A Circular White-Light Flare with Impulsive and Gradual White-Light Kernels
• EUV Waves Driven by the Sudden Expansion of Transequatorial Loops Caused by Coronal Jets
• The Role of Partial Ionization Effects in the Chromosphere
• On standing sausage waves in photospheric magnetic waveguides
• A Comprehensive Radiative Magnetohydrodynamics Simulation of Active Region Scale Flux Emergence from the Convection Zone to the Corona
• Chromospheric Heating by MHD Waves and Instabilities
• Observations of quasi-periodic phenomena associated with a large blowout solar jet
• Observational evidence for buffeting induced kink waves in solar magnetic elements
• Reflection and Conversion of Magneto-Gravity Waves in the Solar Chromosphere: Windows to the Upper Atmosphere
• Propagation of sausage soliton in the solar lower atmosphere observed by Hinode/SOT
• Driving Solar Spicules and Jets with Magnetohydrodynamic Turbulence: Testing a Persistent Idea
• Resonant Alfven waves in partially ionized plasmas of the solar atmosphere
• Sunrise III: Overview of Observatory and Instruments
• Longitudinal oscillations in density stratified and expanding solar waveguides
• Mode identification of MHD waves in an active region observed with Hinode/EIS
• 75th Anniversary of `Existence of Electromagnetic-Hydrodynamic Waves'
• First evidence of interaction between longitudinal and transverse waves in solar magnetic elements
• Propagating Spectropolarimetric Disturbances in a Large Sunspot
• Torsional Alfven Waves in Solar Magnetic Flux Tubes of Axial Symmetry
• Stirring the Base of the Solar Wind: On Heat Transfer and Vortex Formation
• MHD wave modes resolved in fine-scale chromospheric magnetic structures
• Multi-fluid approach to high-frequency waves in plasmas: I. Small-amplitude regime in fully ionized medium
• The detection of upwardly propagating waves channelling energy from the chromosphere to the low corona
• One Year in the Life of Young Suns: Data Constrained Corona-Wind Model of kappa1 Ceti
• The period ratio for standing kink and sausage modes in solar structures with siphon flow. I. magnetized slabs
• Resonant Absorption of Axisymmetric Modes in Twisted Magnetic Flux Tubes
• Contribution of observed multi frequency spectrum of Alfvén waves to coronal heating
• Magnetic swirls and associated fast magnetoacoustic kink waves in a solar chromospheric flux tube
• Impulsively generated wave trains in coronal structures: II. Effects of transverse structuring on sausage waves in pressureless slabs
• The spectrum of kink-like oscillations of solar photospheric magnetic elements
• Fast-to-Alfvén mode conversion mediated by Hall current. II Application to the solar atmosphere
• Could switchbacks originate in the lower solar atmosphere? I. Formation mechanisms of switchbacks
• Vortices evolution in the solar atmosphere: A dynamical equation for the swirling strength
• Three-dimensional MHD wave propagation near a coronal null point: a new wave mode decomposition approach
• Observation of standing kink waves in solar spicules
• Fast sausage modes in magnetic tubes with continuous transverse profiles: effects of a finite plasma beta
• Magnetic shocks and substructures excited by torsional Alfvén wave interactions in merging expanding flux tubes
• Pulse-driven nonlinear Alfvén waves and their role in the spectral line broadening
• Resonant absorption in expanding coronal magnetic flux tubes with uniform density
• Effect of partial ionization on wave propagation in solar magnetic flux tubes
• Photospheric Logarithmic Velocity Spirals as MHD Wave Generation Mechanisms
• Evidence of Multiple Slow Acoustic Oscillations in the Stellar Flaring Loops of Proxima Centauri
• Axisymmetric Modes in Magnetic Flux Tubes with Internal and External Magnetic Twist
• Why "solar tsunamis" rarely leave their imprints in the chromosphere
• Transition to turbulence in nonuniform coronal loops driven by torsional Alfven waves
• Co-spatial velocity and magnetic swirls in the simulated solar photosphere
• Damping of slow surface sausage modes in photospheric waveguides
• A novel approach to identify resonant MHD wave modes in solar pores and sunspot umbrae: $B-\omega$ analysis
• Heating of ions by low-frequency Alfvén waves in partially ionized plasmas
• Spectroscopic Observations and Modelling of Impulsive Alfvén Waves Along a Polar Coronal Jet
• Slow Magneto-acoustic Waves Observed above Quiet-Sun Region in a Dark Cavity
• Surface Alfven Wave Damping in a 3D Simulation of the Solar Wind
• Chromospheric swirls I. Automated detection in H$\alpha$ observations and their statistical properties
• Self-consistent Simulations of Alfven Wave Driven Winds from the Sun and Stars
• Transverse motions in sunspot super-penumbral fibrils
• Newtonian CAFE: a new ideal MHD code to study the solar atmosphere
• GHRS Observations of Cool, Low-Gravity Stars. VI Mass-Loss Rates and Wind Parameters for M Giants
• Correlation between Superconductivity, Band Filling and Electron Confinement at the LaAlO${}_3$-SrTiO${}_3$ Interface
• Investigation of intergranular bright points from the New Vacuum Solar Telescope
• Tomography of a solar plage with the Tenerife Inversion Code
• A nonlocal wave-wave interaction among Alfven waves in an intermediate-beta plasma
• Damping of longitudinal magneto-acoustic oscillations in slowly varying coronal plasma
• State transition induced by self-steepening and self phase-modulation
• Evolution of small-scale magnetic elements in the vicinity of granular-size swirl convective motions
• Observations of Fan-Spine Topology by Solar Orbiter/EUI: Rotational Motions and Indications of Alfvén Waves
• Spectropolarimetric Fluctuations in a Sunspot Chromosphere
• Kink oscillations of flowing threads in solar prominences
• Spectroscopic evidence of Alfvén wave damping in the off-limb solar corona
• Solar chromosphere heating and generation of plasma outflows by impulsively generated two fluid Alfven waves
• Untwisting Jets Related to Magnetic Flux Cancellation
• Three-dimensional numerical simulation of magnetohydrodynamic-gravity waves and vortices in the solar atmosphere
• Observational evidence for two-component distributions describing solar magnetic bright points
• Centre-to-limb spectro-polarimetric diagnostics of simulated solar photospheric magneto-convection: signatures of photospheric Alfven waves
• Ultra-high-resolution Observations of MHD Waves in Photospheric Magnetic Structures
• Testing Alfvén wave propagation in a "realistic" set-up of the solar atmosphere
• Effects of Stratification and Flows on P1/P2 Ratios and Anti-Node Shifts within Closed Loop Structures
• Exploring source region of 3-min slow magnetoacoustic waves observed in coronal fan loops rooted in sunspot umbra
• Magnetohydrodynamic Slow Mode with Drifting He${}^{++}$: Implications for Coronal Seismology and the Solar Wind
• Power spectrum analysis of limb and disk spicule using Hinode Ca H line broadband filter
• Possible Signature of Sausage Waves in Photospheric Bright Points
• Numerical Simulations of Torsional Alfvén Waves in Axisymmetric Solar Magnetic Flux Tubes
• On the Fragility of Alfvén waves in a Stratified Atmosphere
• Coronal Heating Driven by A Magnetic-gradient Pumping Mechanism in Solar Plasmas
• Observation of Alfven wave in ICME-HSS interaction region
• Possible Evolution of Minifilament-Eruption-Produced Solar Coronal Jets, Jetlets, and Spicules, into Magnetic-Twist-Wave "Switchbacks" Observed by the Parker Solar Probe (PSP)
• Propagating Kink Waves in an Open Coronal Magnetic Flux Tube with Gravitational Stratification: Magnetohydrodynamic Simulation and Forward Modelling
• Energy and helicity budgets of solar quiet regions
• 3D numerical simulations of propagating two-fluid, torsional Alfvén waves and heating of a partially-ionized solar chromosphere
• MAGNUS: A new resistive MHD code with heat flow terms
• Velocity Response of the Observed Explosive Events in the Lower Solar Atmosphere: I. Formation of the Flowing Cool Loop System
• Dominance of 2-Minute Oscillations near the Alfvén Surface
• Global and local cutoff frequencies for transverse waves propagating along solar magnetic flux tubes
• Impulsively Generated Kink Wave Trains in Solar Coronal Slabs
• Torsional Alfven waves in stratified and expanding magnetic flux tubes
• Quantifying the evidence for resonant damping of coronal waves with foot-point wave power asymmetry
• New Cutoff Frequency for Torsional Alfv'en Waves Propagating along Wide Solar Magnetic flux Tubes
• Oscillations accompanying a He I 10830 Å negative flare in a solar facula
• Varying Driver Velocity Fields in Photospheric MHD Wave Simulations
• Evidence for Energy Supply by Active Region Spicules to the Solar Atmosphere
• Alfven wave coupled with flow-driven fluid instability in interpenetrating plasmas
• Estimating the contribution of Alfvén waves to the process of heating the quiet solar corona
• Large-amplitude transverse MHD waves prevailing in the H$\alpha$ chromosphere of a solar quiet region revealed by MiHI integrated field spectral observations
• The Effect of Flow and Magnetic Twist on Resonant Absorption of Slow MHD Waves in Magnetic Flux Tubes
• Transition to turbulence in nonuniform coronal loops driven by torsional Alfvén waves. II. Extended analysis and effect of magnetic twist
• Temporal relations between magnetic bright points and the solar sunspot cycle
• Nonlinear effects in resonant layers in solar and space plasmas
• Generation of solar chromosphere heating and coronal outflows by two-fluid waves
• Impulsively Generated Linear and Non-linear Alfven Waves in the Coronal Funnels
• Backscattering and Line Broadening in Orion
• Oscillations observed in Umbra, Plage, Quiet-Sun and the Polarity Inversion Line of Active Region 11158 using HMI/SDO Data
• Problems in Observation and Identification of Torsional Waves in the Lower Solar Atmosphere
• SSALMON - The Solar Simulations for the Atacama Large Millimeter Observatory Network
• A Search for High-Frequency Coronal Brightness Variations in the 21 August 2017 Total Solar Eclipse
• Photospheric Hot Spots at Solar Coronal Loop Footpoints Revealed by Hyperspectral Imaging Observations
• Atmospheric Heating and Wind Acceleration: Results for Cool Evolved Stars based on Proposed Processes
• On collective nature of nonlinear torsional Alfvén waves
• A persistent quiet-Sun small-scale tornado. II. Oscillations
• Chaotic Motion of Ions In Finite-amplitude Low-frequency Alfvén Waves
• Time-Dependent Two-Fluid Magnetohydrodynamic Model and Simulation of the Chromosphere
• The Sun at millimeter wavelengths IV. Magnetohydrodynamic waves in small-scale bright features
• Charge exchange in fluid description of partially ionized plasmas
• Coronal heating problem solution by means of axion origin photons
• Alfvén wave propagation in the partially ionized lower solar atmosphere: a test of the single-fluid approximation
• The period ratio P_1/P_2 of torsional Alfvén waves with steady flows in spicules
• 3D WKB solution for fast magnetoacoustic wave behaviour around an X-line
• Concurrent Kink and Sausage Waves in A Crescent Shaped Structure Over A Limb Prominence
• Parametric instability of Alfvén wave packets
• Mode coupling in solar spicule oscillations
• von Karman - Howarth Similarity of Spatial Correlations and the Distribution of Correlation Lengths in Solar Photospheric Turbulence
• High-resolution spectropolarimetric observations of the temporal evolution of magnetic fields in photospheric bright points
• Magnetic thread twisting in a simulated solar atmosphere
• Sulfur fractionation in coronal plumes as observed by Solar Orbiter/SPICE
• A single frequency approach to nonequilibrium modeling of the chromosphere
• Thermomagnetic Ettingshausen-Nernst effect in tachocline, magnetic reconnection phenomenon in lower layers, axion mechanism of solar luminosity variations, coronal heating problem solution and mechanism of ADM variations around BH
• Determining the Polarisation of a Coronal Standing Kink Oscillation Using Spectral Imaging Techniques with the Coronal Multi-channel Polarimeter (CoMP)
• Acoustic emission from magnetic flux tubes in the solar network