Magnetoacoustic shocks as driver of quiet Sun mottles

Abstract

We present high spatial and high temporal resolution observations of the quiet Sun in H-alpha obtained with the Swedish 1-m Solar Telescope on La Palma. We observe that many mottles, jet-like features in the quiet Sun, display clear up- and downward motions along their main axis. In addition, many mottles show vigorous transverse displacements. Unique identification of the mottles throughout their lifetime is much harder than for their active region counterpart, dynamic fibrils. This is because many seem to lack a sharply defined edge at their top, and significant fading often occurs throughout their lifetime. For those mottles that can be reliably tracked, we find that the mottle tops often undergo parabolic paths. We find a linear correlation between the deceleration these mottles undergo and the maximum velocity they reach, similar to what was found earlier for dynamic fibrils. Combined with an analysis of oscillatory properties, we conclude that at least part of the quiet Sun mottles are driven by magnetoacoustic shocks. In addition, the mixed polarity environment and vigorous dynamics suggest that reconnection may play a significant role in the formation of some quiet Sun jets.

arXiv comment12 pages, 4 figures. ApJ Letters, in press

References in corpus (2)

• Dynamic Fibrils are driven by Magnetoacoustic Shocks
• High Resolution Observations and Modeling of Dynamic Fibrils

Cited by in corpus (68)

• The Interface Region Imaging Spectrograph (IRIS)
• A Tale Of Two Spicules: The Impact of Spicules on the Magnetic Chromosphere
• Heating of the Solar Chromosphere and Corona by Alfven Wave Turbulence
• Multiwavelength studies of MHD waves in the solar chromosphere: An overview of recent results
• On-disk counterparts of type II spicules in the Ca II 854.2 nm and Halpha lines
• Oscillations and waves in solar spicules
• Quantifying Spicules
• Solar fine-scale structures. I. Spicules and other small-scale, jet-like events at the chromospheric level: observations and physical parameters
• The solar chromosphere at high resolution with IBIS. I. New insights from the Ca II 854.2 nm line
• High-resolution Observations of the Shock Wave Behavior for Sunspot Oscillations with the Interface Region Imaging Spectrograph
• Search for high velocities in the disk counterpart of type II spicules
• Coupling from the photosphere to the chromosphere and the corona
• Numerical Simulations of Shock Wave-Driven Jets
• The solar chromosphere at high resolution with IBIS. IV. Dual-line evidence of heating in chromospheric network
• Dynamics of the Solar Magnetic Network. II. Heating the Magnetized Chromosphere
• Observing Episodic Coronal Heating Events Rooted in Chromospheric Activity
• Why Is Non-thermal Line Broadening of Spectral Lines in The Lower Transition Region of the Sun Independent of Spatial Resolution?
• On the origin of the Type~{\sc ii} spicules - dynamic 3D MHD simulations
• Transverse oscillations in chromospheric mottles
• On fibrils and field lines: The nature of H$\alpha$ fibrils in the solar chromosphere
• Spicule-like structures observed in 3D realistic MHD simulations
• Wave Propagation and Jet Formation in the Chromosphere
• The Dynamics of Rapid Redshifted and Blueshifted Excursions in the Solar Halpha line
• Numerical simulations of spicule formation in the solar atmosphere
• Short dynamic fibrils in sunspot chromospheres
• Characteristics of transverse waves in chromospheric mottles
• Limb Spicules from the Ground and from Space
• What causes the high apparent speeds in chromospheric and transition region spicules on the Sun?
• Can coronal hole spicules reach coronal temperatures?
• Effect of coronal temperature on the scale of solar chromospheric jets
• On the propagation of p-modes into the solar chromosphere
• Spicules and downflows in the solar chromosphere
• On the Active Region Bright Grains Observed in the Transition Region Imaging Channels of IRIS
• On the Misalignment between Chromospheric Features and the Magnetic Field on the Sun
• Estimating the Chromospheric Absorption of Transition Region Moss Emission
• On the multi-threaded nature of solar spicules
• H-alpha features with hot onsets III. Fibrils in Lyman-alpha and with ALMA
• DOT Tomography of the Solar Atmosphere VII. Chromospheric Response to Acoustic Events
• Chromospheric backradiation in ultraviolet continua and Halpha
• Spectroscopic measurements of dynamic fibrils in the Ca {\small{II}} 8662 Å line
• Measurements of plasma motions in dynamic fibrils
• Spicule Dynamics over Plage Region
• The Quiet-Sun Photosphere and Chromosphere
• Transient brightenings in the quiet Sun detected by ALMA at 3 mm
• What is a Macrospicule?
• Signatures of dynamic fibrils at the coronal base: Observations from Solar Orbiter/EUI
• Plasma dynamics in solar macrospicules from high-cadence EUV observations
• Hi-C 2.1 Observations of Small-Scale Miniature-Filament-Eruption-Like Cool Ejections in Active Region Plage
• H-alpha features with hot onsets. II. A contrail fibril
• Ubiquitous hundred-Gauss magnetic fields in solar spicules
• Dynamic Ly alpha jets
• Quasi-periodic microjets driven by granular advection as observed with high-resolution imaging at He I 10830 Å
• Spectroscopy at the solar limb: II. Are spicules heated to coronal temperatures ?
• Fine-Scale Features of the Sun's Atmosphere: Spicules and Jets
• On the Response of the Transition Region and the Corona to Rapid Excursions in the Chromosphere
• Small-scale structure and dynamics of the lower solar atmosphere
• The Relation between Solar Spicules and Magnetohydrodynamic Shocks
• Statistical properties of Hα jets in the polar coronal hole and their implications in coronal activities
• Evidence for Energy Supply by Active Region Spicules to the Solar Atmosphere
• A New Type of Jets in a Polar Limb of Solar Coronal Hole
• Oscillatory behavior of chromospheric fine structures in a network and a semi-active regions
• The effect of linear background rotational flows on magnetoacoustic modes of a photospheric magnetic flux tube
• Cloud Modeling of a Network Region in H-alpha
• Spicules in IRIS Mg II Observations: Automated Identification
• Solar H-alpha features with hot onsets. IV. Network fibrils
• Solar Spectroscopy and (Pseudo-)Diagnostics of the Solar Chromosphere
• The group height of spicules links their acceleration and velocity
• Using MHD simulations to model H-alpha and UV spectral lines for interpretation of IRIS and NST data