A multiple spacecraft detection of the 2 April 2022 M-class flare and filament eruption during the first close Solar Orbiter perihelion

Abstract

The Solar Orbiter mission completed its first remote-sensing observation windows in the spring of 2022. On 2/4/2022, an M-class flare followed by a filament eruption was seen both by the instruments on board the mission and from several observatories in Earth's orbit. The complexity of the observed features is compared with the predictions given by the standard flare model in 3D. We use the observations from a multi-view dataset, which includes EUV imaging to spectroscopy and magnetic field measurements. These data come from IRIS, SDO, Hinode, as well as several instruments on Solar Orbiter. Information given by SDO/HMI and Solar Orbiter PHI/HRT shows that a parasitic polarity emerging underneath the filament is responsible for bringing the flux rope to an unstable state. As the flux rope erupts, Hinode/EIS captures blue-shifted emission in the transition region and coronal lines in the northern leg of the flux rope prior to the flare peak. Solar Orbiter SPICE captures the whole region, complementing the Doppler diagnostics of the filament eruption. Analyses of the formation and evolution of a complex set of flare ribbons and loops show that the parasitic emerging bipole plays an important role in the evolution of the flaring region. While the analysed data are overall consistent with the standard flare model, the present particular magnetic configuration shows that surrounding magnetic activity such as nearby emergence needs to be taken into account to fully understand the processes at work. This filament eruption is the first to be covered from different angles by spectroscopic instruments, and provides an unprecedented diagnostic of the multi-thermal structures present before and during the flare. This dataset of an eruptive event showcases the capabilities of coordinated observations with the Solar Orbiter mission.

arXiv commentAccepted for publication in the Astronomy & Astrophysics special edition "Solar Orbiter First Results (Nominal Mission Phase)" (23/05/2023)

References in corpus (44)

• SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
• The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package
• A Model for Solar Coronal Mass Ejections
• The Interface Region Imaging Spectrograph (IRIS)
• The Solar Orbiter mission -- Science overview
• Torus instability
• Criteria for Flux Rope Eruption: Non Equilibrium versus Torus Instability
• Multi-scale Gaussian normalization for solar image processing
• The Polarimetric and Helioseismic Imager on Solar Orbiter
• The standard flare model in three dimensions III. Slip-running reconnection properties
• Velocity Characteristics of Evaporated Plasma Using Hinode/EIS
• Eruption of a Kink-Unstable Filament in Active Region NOAA 10696
• Photospheric flux cancellation and associated flux rope formation and eruption
• Electric current in flares ribbons: observations and 3D standard model
• Slipping magnetic reconnection during an X-class solar flare observed by SDO/AIA
• Decoding the Pre-Eruptive Magnetic Field Configurations of Coronal Mass Ejections
• The formation of IRIS diagnostics. III. Near-ultraviolet Spectra and Images
• Magnetohydrodynamic Modeling of the Solar Eruption on 2010 April 8
• Critical decay index at the onset of solar eruptions
• The Solar Orbiter Science Activity Plan: translating solar and heliospheric physics questions into action
• Initiation and Early Kinematic Evolution of Solar Eruptions
• The effect of the relative orientation between the coronal field and new emerging flux: I Global Properties
• Tracking the Evolution of A Coherent Magnetic Flux Rope Continuously from the Inner to the Outer Corona
• The usefulness of analytic response functions
• Simulations of Emerging Magnetic Flux. II: The formation of Unstable Coronal Flux Ropes and the Initiation of CMEs
• 3D magnetic reconnection and its application to solar flares
• MEM_GE: a new maximum entropy method for image reconstruction from solar X-ray visibilities
• Thermal-nonthermal energy partition in solar flares derived from X-ray, EUV, and bolometric observations
• Extreme Ultra-Violet Spectroscopy of the Lower Solar Atmosphere During Solar Flares
• Can we explain non-typical solar flares?
• Triggering an eruptive flare by emerging flux in a solar active-region complex
• Spectroscopic Observations of Fe XVIII in Solar Active Regions
• Magnetic structure of an activated filament in a flaring active region
• First Perihelion of EUI on the Solar Orbiter mission
• First observations from the SPICE EUV spectrometer on Solar Orbiter
• The 3D geometry of active region upflows deduced from their limb-to-limb evolution
• Multiwavelength observation of a large-scale flux rope eruption above kinked mini-filament
• Vortex and sink flows in eruptive flares as a model for coronal implosions
• Sequential eruptions triggered by flux emergence - observations and modeling
• Apparent and Intrinsic Evolution of Active Region Upflows
• Electric current evolution at the footpoints of solar eruptions
• Disambiguation of Vector Magnetograms by Stereoscopic Observations from the Solar Orbiter/Polarimetric and Helioseismic Imager (PHI) and the Solar Dynamic Observatory (SDO)/Helioseismic and Magnetic Imager (HMI)
• Wavefront error of PHI/HRT on Solar Orbiter at various heliocentric distances
• Stereoscopic disambiguation of vector magnetograms: first applications to SO/PHI-HRT data

Cited by in corpus (4)

• Observations of Fan-Spine Topology by Solar Orbiter/EUI: Rotational Motions and Indications of Alfvén Waves
• A prolific solar flare factory. Nearly continuous monitoring of an active region nest with Solar Orbiter
• Active region upflows in various coronal structures and their coupling to the lower atmosphere
• Radio, X-ray, and EUV signatures of internal and external reconnection of an erupting flux rope