Coronal kink oscillations and photospheric driving: combining SolO/EUI and SST/CRISP high-resolution observations

Abstract

The driving and excitation mechanisms of decay-less kink oscillations in coronal loops remain under debate. We aim to quantify and provide simple observational constraints on the photospheric driving of oscillating coronal loops in a few typical active region configurations: sunspot, plage, pores and enhanced-network regions. We then aim to investigate the possible interplay between photospheric driving and properties of kink oscillations in connected coronal loops. We analyse two unique datasets of the corona and photosphere taken at a high resolution during the first coordinated observation campaign between Solar Orbiter and the Swedish 1-m Solar Telescope (SST). A local correlation tracking method is applied on the SST/CRISP data to quantify the photospheric motions at the base of coronal loops. The same loops are then analysed in the corona by exploiting data from the Extreme Ultraviolet Imager on Solar Orbiter, and by using a wavelet analysis to characterize the kink oscillations. Each photospheric region shows dynamics with an overall increase in strength going from pore, plage, enhanced-network to sunspot regions. Differences are also seen in the kink-mode amplitudes of the corresponding coronal loops. This suggests the photosphere is involved in the driving of coronal kink oscillations. However, the few samples available does not allow to further establish the excitation mechanism yet. Despite oscillating coronal loops being anchored in seemingly "static" strong magnetic field regions as seen from coronal EUV observations, photospheric observations provide evidence for a continuous and significant driving at their base. The precise connection between photospheric driving and coronal kink oscillations remains to be further investigated. This study finally provides critical constraints on photospheric driving that can be tested in existing numerical models of coronal loops.

arXiv comment18(+8) pages, 18 figures, accepted on 22 February 2025 to appear in Astronomy & Astrophysics

References in corpus (63)

• scikit-image: Image processing in Python
• The Solar Orbiter mission -- Science overview
• The stellar atmosphere simulation code Bifrost
• CRISP Spectropolarimetric Imaging of Penumbral Fine Structure
• Self-oscillation
• Numerical simulation of the three-dimensional structure and dynamics of the non-magnetic solar chromosphere
• CRISPRED: A data pipeline for the CRISP imaging spectropolarimeter
• The Polarimetric and Helioseismic Imager on Solar Orbiter
• A publicly available simulation of an enhanced network region of the Sun
• Persistent Doppler shift oscillations observed with HINODE/EIS in the solar corona: spectroscopic signatures of Alfvenic waves and recurring upflows
• Decayless low-amplitude kink oscillations: a common phenomenon in the solar corona?
• Growing transverse oscillations of a multistranded loop observed by SDO/AIA
• On the prevalence of small-scale twist in the solar chromosphere and transition region
• Relationship between wave processes in sunspots and quasi-periodic pulsations in active region flares
• Fine strand-like structure in the solar corona from MHD transverse oscillations
• Kink oscillations of coronal loops
• A statistical study of decaying kink oscillations detected using SDO/AIA
• The multi-thermal and multi-stranded nature of coronal rain
• A basal contribution from p-modes to the Alfvénic wave flux in the Sun's corona
• The European Solar Telescope
• The Source of Three-minute Magneto-acoustic Oscillations in Coronal Fans
• A global view of velocity fluctuations in the corona below 1.3 $R_{\odot }$ with CoMP
• SSTRED: Data- and metadata-processing pipeline for CHROMIS and CRISP
• Heating by transverse waves in simulated coronal loops
• DeepVel: deep learning for the estimation of horizontal velocities at the solar surface
• On the continuum intensity distribution of the solar photosphere
• Heating effects from driven transverse and Alfvén waves in coronal loops
• Modelling observed decay-less oscillations as resonantly enhanced Kelvin-Helmholtz vortices from transverse MHD waves and their seismological application
• A method for global inversion of multi-resolution solar data
• Evaluating local correlation tracking using CO5BOLD simulations of solar granulation
• The Coronal Monsoon: Thermal Nonequilibrium Revealed by Periodic Coronal Rain
• Excitation of decay-less transverse oscillations of coronal loops by random motions
• Horizontal flow fields observed in Hinode G-band images. I. Methods
• Decayless oscillations in solar coronal bright points
• Contribution of mode coupling and phase-mixing of Alfvén waves to coronal heating
• Amplitudes and energy fluxes of simulated decayless kink oscillations
• Tracking granules on the Sun's surface and reconstructing horizontal velocity fields: I. the CST algorithm
• Is the sky the limit? Performance of the revamped Swedish 1-m Solar Telescope and its blue- and red-beam re-imaging systems
• Generating transverse loop oscillations through a steady-flow driver
• Multi-scale observations of thermal non-equilibrium cycles in coronal loops
• What drives decayless kink oscillations in active region coronal loops on the Sun?
• Wave modes excited by photospheric p-modes and mode conversion in a multi-loop system
• A Statistical Study of Short-period Decayless Oscillations of Coronal Loops in an Active Region
• Correlations between sunspots and their moat flows
• High frequency decayless waves with significant energy in Solar Orbiter/EUI observations
• Image enhancement with wavelet-optimized whitening
• Contribution of observed multi frequency spectrum of Alfvén waves to coronal heating
• Coronal loop transverse oscillations excited by different driver frequencies
• Forced oscillations of coronal loops driven by EIT waves
• High-resolution observations of the solar photosphere, chromosphere and transition region. A database of coordinated IRIS and SST observations
• A Statistical Investigation of Decayless Oscillations in Small-scale Coronal Loops Observed by Solar Orbiter/EUI
• Analysing the effects of apodizing windows on local correlation tracking using Nirvana simulations of convection
• Influence of the Lower Atmosphere on Wave Heating and Evaporation in Solar Coronal Loops
• The power spectrum of solar convection flows from high-resolution observations and 3D simulations
• Decayless oscillations in 3D coronal loops excited by a power-law driver
• Excitation and evolution of coronal oscillations in self-consistent 3D radiative MHD simulations of the solar atmosphere
• Dynamics of Trees of Fragmenting Granules in the Quiet Sun: Hinode/SOT Observations Compared to Numerical Simulation
• Do Periods of Decayless Kink Oscillations of Solar Coronal Loops Depend on Noise?
• Evolution of the flow field in decaying active regions, Transition from a moat flow to a supergranular flow
• Kelvin-Helmholtz instability and heating in oscillating loops perturbed by power-law transverse wave drivers
• Fundamental Transverse Vibrations of the Active Region Solar Corona
• Damping of coronal oscillations in self-consistent 3D radiative MHD simulations of the solar atmosphere
• On the Effect of Coronal Rain on Decayless Kink Oscillations of Coronal Loops

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