Observations and numerical models of solar coronal heating associated with spicules

Abstract

Spicules have been proposed as significant contributors to the mass and energy balance of the corona. While previous observations have provided a glimpse of short-lived transient brightenings in the corona that are associated with spicules, these observations have been contested and are the subject of a vigorous debate both on the modeling and the observational side. Therefore, it remains unclear whether plasma is heated to coronal temperatures in association with spicules. We use high-resolution observations of the chromosphere and transition region with the Interface Region Imaging Spectrograph (IRIS) and of the corona with the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO) to show evidence of the formation of coronal structures associated with spicular mass ejections and heating of plasma to transition region and coronal temperatures. Our observations suggest that a significant fraction of the highly dynamic loop fan environment associated with plage regions may be the result of the formation of such new coronal strands, a process that previously had been interpreted as the propagation of transient propagating coronal disturbances (PCD)s. Our observations are supported by 2.5D radiative MHD simulations that show heating to coronal temperatures in association with spicules. Our results suggest that heating and strong flows play an important role in maintaining the substructure of loop fans, in addition to the waves that permeate this low coronal environment.

arXiv comment9 pages, 5 figures

References in corpus (30)

• The Interface Region Imaging Spectrograph (IRIS)
• The Solar Optical Telescope for the Hinode Mission: An Overview
• The stellar atmosphere simulation code Bifrost
• A Tale Of Two Spicules: The Impact of Spicules on the Magnetic Chromosphere
• MHD Waves and Coronal Seismology: an overview of recent results
• Observing the Roots of Solar Coronal Heating - in the Chromosphere
• Dynamic Fibrils are driven by Magnetoacoustic Shocks
• On-disk counterparts of type II spicules in the Ca II 854.2 nm and Halpha lines
• Persistent Doppler shift oscillations observed with HINODE/EIS in the solar corona: spectroscopic signatures of Alfvenic waves and recurring upflows
• Quantifying Spicules
• Solar fine-scale structures. I. Spicules and other small-scale, jet-like events at the chromospheric level: observations and physical parameters
• An Interface Region Imaging Spectrograph first view on Solar Spicules
• Quasi-periodic Propagating Signals in the Solar Corona: The Signature of Magnetoacoustic Waves or High-Velocity Upflows?
• 2D Radiative MHD Simulations of the Importance of Partial Ionization in the Chromosphere
• Observing Episodic Coronal Heating Events Rooted in Chromospheric Activity
• On the origin of the Type~{\sc ii} spicules - dynamic 3D MHD simulations
• Heating signatures in the disk counterparts of solar spicules in IRIS observations
• Slow magnetosonic waves and fast flows in active region loops
• The Role of Type II Spicules in the Upper Solar Atmosphere
• The formation of IRIS diagnostics VI. The Diagnostic Potential of the C II Lines at 133.5 nm in the Solar Atmosphere
• Can coronal hole spicules reach coronal temperatures?
• Quiet Sun Hα Transients and Corresponding Small-Scale Transition Region and Coronal Heating
• Propagating Disturbances in The Solar Corona and Spicular Connection
• Three-dimensional MHD modeling of propagating disturbances in fan-like coronal loops
• On the Misalignment between Chromospheric Features and the Magnetic Field on the Sun
• Observational Signatures of Waves and Flows in the Solar Corona
• A Detailed Comparison Between The Observed and Synthesized Properties of a Simulated Type ii Spicule
• Asymmetries in Coronal Spectral lines and Emission Measure Distribution
• Core and Wing Densities of Asymmetric Coronal Spectral Profiles: Implications for the Mass Supply of the Solar Corona
• MHD modeling of coronal loops: injection of high-speed chromospheric flows

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• The Solar Orbiter mission -- Science overview
• Critical Science Plan for the Daniel K. Inouye Solar Telescope (DKIST)
• MHD Waves in open coronal structures
• Probing the physics of the solar atmosphere with the Multi-slit Solar Explorer (MUSE): I. Coronal Heating
• Investigating the response of loop plasma to nanoflare heating using RADYN simulations
• The High-Resolution Coronal Imager, Flight 2.1
• Transverse Wave Induced Kelvin-Helmholtz Rolls in Spicules
• Ion-neutral interactions and non-equilibrium ionization in the solar chromosphere
• Impact of Type II Spicules in the Corona: Simulations and Synthetic Observables
• A Comprehensive Radiative Magnetohydrodynamics Simulation of Active Region Scale Flux Emergence from the Convection Zone to the Corona
• Why Does the Solar Corona Abnormally Rotate Faster Than the Photosphere?
• Spectroscopic and imaging observations of small-scale reconnection events
• On the importance of the nonequilibrium ionization of Si IV and O IV and the line-of-sight in solar surges
• The chromosphere underneath a Coronal Bright Point
• IRIS observations of the low-atmosphere counterparts of active region outflows
• Evidence of multithermal nature of spicular downflows. Impact on solar atmospheric heating
• Differential rotation of the chromosphere in the He I absorption line
• A comparison of the active region upflow and core properties using simultaneous spectroscopic observations from IRIS and Hinode
• Spicule jets in the solar atmosphere modeled with resistive MHD and thermal conduction
• Solar Chromospheric Network as a Source for Solar Wind Switchbacks
• Modelling the connection between propagating disturbances and solar spicules
• The Relation between Solar Spicules and Magnetohydrodynamic Shocks
• Diffuse solar coronal features and their spicular footpoints
• Statistical properties of spicules in MURaM-ChE
• A new view of the solar interface region from the Interface Region Imaging Spectrograph (IRIS)
• 3-D exact analytical solutions of two fluid plasma, MHD and neutral fluid equations for the creation of ordered structures as well as jet-like flows
• Bright Dots and Coronal Plume Formation in Sunspot Penumbra
• SolO/EUI Observations of Ubiquitous Fine-scale Bright Dots in an Emerging Flux Region: Comparison with a Bifrost MHD Simulation
• Parallel plasma loops and the energization of the solar corona