F. Schüller
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View article: Solar Orbiter reveals persistent magnetic reconnection in medium-scale filament eruptions
Solar Orbiter reveals persistent magnetic reconnection in medium-scale filament eruptions Open
Solar filament eruptions play a key role in driving space weather, yet their fine-scale evolution remains poorly understood due to observational limitations. Using unprecedented high-resolution observations from Solar Orbiter’s Extreme Ult…
View article: SolarZip: An efficient and adaptive compression framework for Solar EUV imaging data
SolarZip: An efficient and adaptive compression framework for Solar EUV imaging data Open
Context. With the advancement of solar physics research, next-generation solar space missions and ground-based telescopes face significant challenges in efficiently transmitting and/or storing large-scale observational data. Aims. We have …
View article: Extremely diverse coronal jets accompanying an erupting filament captured by Solar Orbiter
Extremely diverse coronal jets accompanying an erupting filament captured by Solar Orbiter Open
Solar jets are collimated plasma ejections driven by magnetic reconnection, which play a critical role in the energy release and mass transport in the solar atmosphere. Using Solar Orbiter’s Extreme Ultraviolet Imager (EUI) with its unprec…
View article: Extremely diverse coronal jets accompanying an erupting filament captured by Solar Orbiter
Extremely diverse coronal jets accompanying an erupting filament captured by Solar Orbiter Open
Solar jets are collimated plasma ejections driven by magnetic reconnection, which play a critical role in the energy release and mass transport in the solar atmosphere. Using Solar Orbiter's Extreme Ultraviolet Imager (EUI) with its unprec…
View article: Solar Orbiter reveals persistent magnetic reconnection in medium-scale filament eruptions
Solar Orbiter reveals persistent magnetic reconnection in medium-scale filament eruptions Open
Solar filament eruptions play a key role in driving space weather, yet their fine-scale evolution remains poorly understood due to observational limitations. Using unprecedented high-resolution observations from Solar Orbiter's Extreme Ult…
View article: CoSEE-Cat: A Comprehensive Solar Energetic Electron event Catalogue obtained from combined in situ and remote-sensing observations from Solar Orbiter
CoSEE-Cat: A Comprehensive Solar Energetic Electron event Catalogue obtained from combined in situ and remote-sensing observations from Solar Orbiter Open
Context. The acceleration of particles at the Sun and their propagation through interplanetary space are key topics in heliophysics. Specifically, solar energetic electrons (SEEs) measured in situ can be linked to solar events such as flar…
View article: Spatial Extent of the Magnetic Influence of an Active Region on the Solar Atmosphere
Spatial Extent of the Magnetic Influence of an Active Region on the Solar Atmosphere Open
Solar activity can be witnessed in the form of sunspots and active regions, where the magnetic field is enhanced by up to a factor of 1000 as compared to that of the quiet Sun. In addition, solar activity manifests itself in terms of flare…
View article: Spectral Analysis of the most intense Solar Energetic Electron Events Observed with Solar Orbiter from December 2020 to December 2022
Spectral Analysis of the most intense Solar Energetic Electron Events Observed with Solar Orbiter from December 2020 to December 2022 Open
The Sun produces eruptive events that release energetic particles, such as protons and electrons, into the heliosphere. These solar energetic particles (SEPs) can reach exceptionally high energies and pose risks to satellite technology and…
View article: Spatially Resolved Oscillations of a Flare Looptop X-Ray Source
Spatially Resolved Oscillations of a Flare Looptop X-Ray Source Open
The looptop region in solar flares is a crucial site to understand the physical processes of magnetic reconnection and particle acceleration. Here, we report novel details of a flare looptop X-ray source that is associated with electron ac…
View article: Understanding the star formation efficiency in dense gas: Initial results from the CAFFEINE survey with ArTéMiS
Understanding the star formation efficiency in dense gas: Initial results from the CAFFEINE survey with ArTéMiS Open
Context. Despite recent progress, the question of what regulates the star formation efficiency (SFE) in galaxies remains one of the most debated problems in astrophysics. According to the dominant picture, star formation (SF) is regulated …
View article: The solar cycle 25 multi-spacecraft solar energetic particle event catalog of the SERPENTINE project
The solar cycle 25 multi-spacecraft solar energetic particle event catalog of the SERPENTINE project Open
Context . The solar energetic particle analysis platform for the inner heliosphere (SERPENTINE) project, funded through the H2020-SPACE-2020 call of the European Union’s Horizon 2020 framework program, employs measurements of the new inner…
View article: Generation of relativistic electrons at the termination shock in the solar flare region
Generation of relativistic electrons at the termination shock in the solar flare region Open
Solar flares are accompanied by an enhanced emission of electromagnetic waves from the radio up to the gamma-ray range. The associated hard X-ray (HXR) and microwave radiation is generated by energetic electrons, which carry a substantial …
View article: Generation of relativistic electrons at the termination shock in the solar flare region
Generation of relativistic electrons at the termination shock in the solar flare region Open
Context. Solar flares are accompanied by an enhanced emission of electromagnetic waves from the radio up to the γ -ray range. The associated hard X-ray and microwave radiation is generated by energetic electrons. These electrons play an im…
View article: A catalogue of large solar energetic particle events observed by Solar Orbiter for the first ~ four years of measurements (2020–2023)
A catalogue of large solar energetic particle events observed by Solar Orbiter for the first ~ four years of measurements (2020–2023) Open
Solar Orbiter (SO) observations provide an unprecedented opportunity to study the evolution of solar energetic particle (SEP) events from different locations within the heliosphere. In this work, we have compiled a catalogue of SEP events …
View article: Energy spectra of Solar Energetic Electron Events Observed with Solar Orbiter
Energy spectra of Solar Energetic Electron Events Observed with Solar Orbiter Open
The identification of the phenomena responsible for the acceleration of solar energetic particles (SEP) still challenges current research and limits our forecasting abilities of SEP events. Even the most recent space missions, such as Sola…
View article: Energetic Particle Contamination in STIX During Solar Orbiter’s Passage Through Earth’s Radiation Belts and an Interplanetary Shock
Energetic Particle Contamination in STIX During Solar Orbiter’s Passage Through Earth’s Radiation Belts and an Interplanetary Shock Open
International audience
View article: Observational Signatures of Electron-driven Chromospheric Evaporation in a White-light Flare
Observational Signatures of Electron-driven Chromospheric Evaporation in a White-light Flare Open
We investigate observational signatures of explosive chromospheric evaporation during a white-light flare (WLF) that occurred on 2022 August 27. Using the moment analysis, bisector techniques, and the Gaussian fitting method, redshifted ve…
View article: A multiple spacecraft detection of the 2 April 2022 M-class flare and filament eruption during the first close Solar Orbiter perihelion
A multiple spacecraft detection of the 2 April 2022 M-class flare and filament eruption during the first close Solar Orbiter perihelion Open
Context. The Solar Orbiter mission completed its first remote-sensing observation windows in the spring of 2022. On 2 April 2022, an M-class flare followed by a filament eruption was seen both by the instruments on board the mission and fr…
View article: A multiple spacecraft detection of the 2 April 2022 M-class flare and filament eruption during the first close Solar Orbiter perihelion
A multiple spacecraft detection of the 2 April 2022 M-class flare and filament eruption during the first close Solar Orbiter perihelion Open
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 ob…
View article: Observational signatures of electron-driven chromospheric evaporation in a white-light flare
Observational signatures of electron-driven chromospheric evaporation in a white-light flare Open
We investigate observational signatures of explosive chromospheric evaporation during a white-light flare (WLF) that occurred on 2022 August 27. Using the moment analysis, bisector techniques, and the Gaussian fitting method, red-shifted v…
View article: Multiple injections of energetic electrons associated with the flare and CME event on 9 October 2021
Multiple injections of energetic electrons associated with the flare and CME event on 9 October 2021 Open
Context. We study the solar energetic particle (SEP) event observed on 9 October 2021 by multiple spacecraft, including Solar Orbiter. The event was associated with an M1.6 flare, a coronal mass ejection, and a shock wave. During the event…
View article: The 17 April 2021 widespread solar energetic particle event
The 17 April 2021 widespread solar energetic particle event Open
Context. A complex and long-lasting solar eruption on 17 April 2021 produced a widespread solar energetic particle (SEP) event that was observed by five longitudinally well-separated observers in the inner heliosphere that covered distance…
View article: The data center for the Spectrometer and Telescope for Imaging X-rays (STIX) on board Solar Orbiter
The data center for the Spectrometer and Telescope for Imaging X-rays (STIX) on board Solar Orbiter Open
Context. The Spectrometer and Telescope for Imaging X-rays (STIX) on board Solar Orbiter observes solar X-ray emission in the range of 4–150 keV and produces spectra and images of solar flares over a wide range of flare magnitudes. During …
View article: The 17 April 2021 widespread solar energetic particle event
The 17 April 2021 widespread solar energetic particle event Open
Context. A solar eruption on 17 April 2021 produced a widespread Solar Energetic Particle (SEP) event that was observed by five longitudinally well-separated observers in the inner heliosphere at heliocentric distances of 0.42 to 1 au: Bep…
View article: STIX imaging I -- Concept
STIX imaging I -- Concept Open
Aims. To provide a schematic mathematical description of the imaging concept of the Spectrometer/Telescope for Imaging X-rays (STIX) on board Solar Orbiter. The derived model is the fundamental starting point for both the interpretation of…
View article: First results on interplanetary electron events obtained by joint observations of remote-sensing and in-situ instruments on Solar Orbiter
First results on interplanetary electron events obtained by joint observations of remote-sensing and in-situ instruments on Solar Orbiter Open
Impulsive electron events observed in interplanetary space are believed to be generated by acceleration in solar flares. This notion has been supported by correlations between the characteristics of energetic electrons detected in-situ nea…
View article: The data center for the Spectrometer and Telescope for Imaging X-rays (STIX) onboard Solar Orbiter
The data center for the Spectrometer and Telescope for Imaging X-rays (STIX) onboard Solar Orbiter Open
The Spectrometer and Telescope for Imaging X-rays (STIX) on board Solar Orbiter observes solar X-ray emission in the range of 4 – 150 keV and produces spectra and images of solar flares over a wide range of flare magnitudes. During nominal…
View article: Multiple injections of energetic electrons associated with the flare/CME event on 9 October 2021
Multiple injections of energetic electrons associated with the flare/CME event on 9 October 2021 Open
We study the solar energetic particle (SEP) event observed on 9 October 2021, by multiple spacecraft including Solar Orbiter (SolO). The event was associated with an M1.6 flare, a coronal mass ejection (CME) and a shock wave. During the ev…