Small-scale magnetic flux emergence preceding a chain of energetic solar atmospheric events
arXiv:2403.11652 · doi:10.1051/0004-6361/202348894
Abstract
Advancements in instrumentation have revealed a multitude of small-scale EUV events in the solar atmosphere. Our aim is to employ high-resolution magnetograms to gain a detailed understanding of the magnetic origin of such phenomena. We have used coordinated observations from SST, IRIS, and SDO to analyze an ephemeral magnetic flux emergence episode and the following chain of small-scale energetic events. These unique observations clearly link these phenomena together. The high-resolution (0."057/pixel) magnetograms obtained with SST/CRISP allows us to reliably measure the magnetic field at the photosphere and detect the emerging bipole that causes the subsequent eruptive atmospheric events. Notably, this small-scale emergence episode remains indiscernible in the lower resolution SDO/HMI magnetograms (0."5/pixel). We report the appearance of a dark bubble in Ca II K related to the emerging bipole, a sign of the canonical expanding magnetic dome predicted in flux emergence simulations. Evidences of reconnection are also found: first through an Ellerman bomb, and later by the launch of a surge next to a UV burst. The UV burst exhibits a weak EUV counterpart in the coronal SDO/AIA channels. By calculating DEM, its plasma is shown to reach a temperature beyond 1 MK and have densities between the upper chromosphere and transition region. Our study showcases the importance of high-resolution magnetograms to unveil the mechanisms triggering phenomena such as EBs, UV bursts, and surges. This could hold implications for small-scale events akin to those recently reported in EUV using Solar Orbiter. The finding of temperatures beyond 1 MK in the UV burst plasma strongly suggests that we are examining analogous features. Therefore, we signal caution regarding drawing conclusions from full-disk magnetograms that lack the necessary resolution to reveal their true magnetic origin.
arXiv commentAccepted in A&A, 11 pages, 7 figures, 5 movies
References in corpus (83)
- The Interface Region Imaging Spectrograph (IRIS)
- The Solar Optical Telescope for the Hinode Mission: An Overview
- The Solar Orbiter mission -- Science overview
- CRISP Spectropolarimetric Imaging of Penumbral Fine Structure
- Differential Emission Measures from the Regularized Inversion of Hinode and SDO data
- Hot Explosions in the Cool Atmosphere of the Sun
- CRISPRED: A data pipeline for the CRISP imaging spectropolarimeter
- The Polarimetric and Helioseismic Imager on Solar Orbiter
- The formation of IRIS diagnostics II. The formation of the Mg II h&k lines in the solar atmosphere
- Giant Chromospheric Anemone Jet Observed with Hinode and Comparison with Magnetohydrodynamic Simulations: Evidence of Propagating Alfven Waves and Magnetic Reconnection
- Solar surface emerging flux regions: a comparative study of radiative MHD modeling and Hinode SOT observations
- The formation of IRIS diagnostics I. A quintessential model atom of Mg II and general formation properties of the Mg II h&k lines
- Plasma Jets and Eruptions in Solar Coronal Holes: a 3D flux emergence experiment
- Ellerman Bombs at high resolution: I. Morphological evidence for photospheric reconnection
- The second flight of the SUNRISE balloon-borne solar observatory: overview of instrument updates, the flight, the data and first results
- Bombs and flares at the surface and lower atmosphere of the Sun
- Ellerman bombs at high resolution III. Simultaneous observations with IRIS and SST
- Solar ultraviolet bursts
- Multiwavelength Observations of Small-Scale Reconnection Events triggered by Magnetic Flux Emergence in the Solar Atmosphere
- Twisting solar coronal jet launched at the boundary of an active region
- An Intriguing Chromospheric Jet Observed by Hinode: I. Fine Structure Kinematics and Evidence of Unwinding Twists
- Ellerman Bombs at high resolution: II. Visibility, triggering and effect on upper atmosphere
- Ellerman bombs: fallacies, fads, usage
- Frequently Occurring Reconnection Jets from Sunspot Light Bridges
- 3D Temperature Mapping of Solar Photospheric Fine Structure Using Ca II H Filtergrams
- Chromospheric Jet and Growing "Loop" Observed by Hinode: New Evidence of Fan-Spine Magnetic Topology Resulting From Flux Emergence
- Intermittent reconnection and plasmoids in UV bursts in the low solar atmosphere
- Ellerman bombs and UV bursts: transient events in chromospheric current sheets
- SSTRED: Data- and metadata-processing pipeline for CHROMIS and CRISP
- Coronal hole boundaries at small scales: IV. SOT view Magnetic field properties of small-scale transient brightenings in coronal holes
- Three-dimensional modeling of the Ca II H&K lines in the solar atmosphere
- Picoflare jets power the solar wind emerging from a coronal hole on the Sun
- Rotating Solar Jets in Simulations of Flux Emergence with Thermal Conduction
- The cool surge following flux emergence in a radiation-MHD experiment
- Emergence of granular-sized magnetic bubbles through the solar atmosphere: I. Spectropolarimetric observations and simulations
- Magnetic Flux Cancellation in Ellerman Bombs
- Surges and Si IV bursts in the solar atmosphere. Understanding IRIS and SST observations through RMHD experiments
- A method for global inversion of multi-resolution solar data
- On the Accuracy of the Differential Emission Measure Diagnostics of Solar Plasmas. Application to AIA/SDO. Part II: Multithermal plasmas
- Simulating Ellerman bomb-like event
- On the Accuracy of the Differential Emission Measure Diagnostics of Solar Plasmas. Application to AIA/SDO. Part I: Isothermal plasmas
- Plasmoid-mediated reconnection in solar UV bursts
- Emergence of granular-sized magnetic bubbles through the solar atmosphere. II. Non-LTE chromospheric diagnostics and inversions
- UV spectra, bombs, and the solar atmosphere
- IRIS and SDO observation of recurrent explosive events
- Ellerman bombs and UV bursts: reconnection at different atmospheric layers
- Small Scale Magnetic Flux Emergence Observed with Hinode/Solar Optical Telescope
- The magnetic drivers of campfires seen by the Polarimetric and Helioseismic Imager (PHI) on Solar Orbiter
- Statistical Analysis of Small Ellerman Bomb Events
- Flame-like Ellerman Bombs and Their Connection to Solar UV Bursts
- A case-study of multi-temperature coronal jets for emerging flux MHD models
- IRIS observations of magnetic interactions in the solar atmosphere between pre-existing and emerging magnetic fields. I. Overall evolution
- Dissecting bombs and bursts: non-LTE inversions of low-atmosphere reconnection in SST and IRIS observations
- An observationally-constrained model of strong magnetic reconnection in the solar chromosphere. Atmospheric stratification and estimates of heating rates
- A Tale of Two Emergences: Sunrise II Observations of Emergence Sites in a Solar Active Region
- On chromospheric heating during flux emergence in the solar atmosphere
- Spicules and downflows in the solar chromosphere
- A Fast, Simple, Robust Algorithm for Coronal Temperature Reconstruction
- Granular-Scale Elementary Flux Emergence Episodes in a Solar Active Region
- Signatures of ubiquitous magnetic reconnection in the lower solar atmosphere
- A 2D Model for Coronal Bright Points: Association with Spicules, UV bursts, Surges and EUV Coronal Jets
- Photospheric response to EB-like event
- IRIS observations of magnetic interactions in the solar atmosphere between pre-existing and emerging magnetic fields. II. UV emission properties
- The magnetic structure of surges in small-scale emerging flux regions
- Ultra-high resolution observations of plasmoid-mediated magnetic reconnection in the deep solar atmosphere
- Solar Orbiter and SDO Observations, and Bifrost MHD Simulations of Small-scale Coronal Jets
- Slippage of Jets Explained by the Magnetic Topology of NOAA Active Region 12035
- Temperature of Solar Orbiter/EUI quiet Sun small scale brightenings: evidence for a cooler component
- Multi-wavelength high-resolution observations of a small-scale emerging magnetic flux event and the chromospheric and coronal response
- Emergence of granular-sized magnetic bubbles through the solar atmosphere. III. The path to the transition region
- High-resolution observations of the solar photosphere, chromosphere and transition region. A database of coordinated IRIS and SST observations
- Automating Ellerman bomb detection in ultraviolet continua
- Multi-thermal jet formation triggered by flux emergence
- Imaging and spectroscopic observations of extreme-ultraviolet brightenings using EUI and SPICE on board Solar Orbiter
- Evidence of chromospheric molecular hydrogen emission in a solar flare observed by the IRIS satellite
- Occurrence and Statistics of IRIS Bursts
- Solar surges related to UV bursts: Characterization through k-means, inversions and density diagnostics
- Plausibility of ultraviolet burst generation in the low solar chromosphere
- Emergence of small-scale magnetic flux in the quiet Sun
- Signatures of ubiquitous magnetic reconnection in the deep atmosphere of sunspot penumbrae
- High-resolution spectroscopy of a surge in an emerging flux region
- Extreme-Ultraviolet Wave and Accompanying Loop Oscillations
- Excitation of an Outflow From the Lower Solar Atmosphere and a Co-Temporal EUV Transient Brightening
Cited by in corpus (5)
- High flow speeds and transition-region like temperatures in the solar chromosphere during flux emergence
- Magnetic Topology of quiet-Sun Ellerman bombs and associated Ultraviolet brightenings
- Quasi-periodic pulsations in extreme-ultraviolet brightenings
- Small-scale dynamic phenomena associated with interacting fan-spine topologies: quiet-Sun Ellerman bombs, UV brightenings, and chromospheric inverted-Y-shaped jets
- The making of robust and highly performing imaging spectropolarimeters for large solar telescopes