38 citations · 193 across the 24 of their papers we have counts for
26 papers
Participation, selection and indicative bidding in auctions with costly entry
Changxia Ke, Greg Kubitz, Yang Liu
We study auctions with costly entry in which bidders have incomplete information about their affiliated private valuations prior to entry. We examine whether indicative bidding--a…
Chromospheric magnetic field extrapolations reveal the flux-rope configuration of a solar filament
Robert Jarolim, João M. da Silva Santos, Matthias Rempel +5
Solar eruptions are powered by the release of magnetic energy stored in the lower solar atmosphere, but the pre-eruptive magnetic configuration of filament channels remains difficu…
Improving Solar Flare Soft X-ray Classification With FOXES: A Framework For Operational X-ray Emission Synthesis
Griffin T. Goodwin, Alison J. March, Jayant Biradar +5
The Geostationary Operational Environmental Satellite (GOES) solar soft X-ray (SXR) irradiance in the 1-8Å wavelength range is a long-standing measure of solar activity, used to de…
Neural blind deconvolution to reconstruct high-resolution ground-based solar observations
Christoph Schirninger, Robert Jarolim, Astrid M. Veronig +2
Ground-based solar observations enable unprecedented spatial, spectral, and temporal resolution of the lower solar atmosphere, yet Earths turbulent atmosphere imposes significant l…
New Bulgarian-Austrian project 'Joint observations and investigations of solar chromospheric and coronal activity'
Rositsa Miteva, Werner Pötzi, Astrid Veronig +9
We present the bilateral collaboration between Bulgarian and Austrian solar and space weather researchers on the topic of chromospheric and coronal activity. This new project will…
FOXES: A Framework For Operational X-ray Emission Synthesis
Griffin T. Goodwin, Jayant Biradar, Alison J. March +4
Understanding solar flares is critical for predicting space weather, as their activity shapes how the Sun influences Earth and its environment. The development of reliable forecast…
Image calibration between the Extreme Ultraviolet Imagers on Solar Orbiter and the Solar Dynamics Observatory
Christoph Schirninger, Robert Jarolim, Astrid M. Veronig +6
To study and monitor the Sun and its atmosphere, various space missions have been launched in the past decades. With the rapid improvement in technology and different mission requi…
SuNeRF-CME: Physics-Informed Neural Radiance Fields for Tomographic Reconstruction of Coronal Mass Ejections
Robert Jarolim, Martin Sanner, Chia-Man Hung +8
Coronagraphic observations enable direct monitoring of coronal mass ejections (CMEs) through scattered light from free electrons, but determining the 3D plasma distribution from 2D…
Magnetic structure and asymmetric eruption of a 500 Mm filament rooted in weak-field regions
Stefan Purkhart, Astrid M. Veronig, Robert Jarolim +2
We performed a detailed analysis of the magnetic structure and asymmetric eruption of a large (about 500 Mm) inverse S-shaped filament partially located in AR 13229 on February 24,…
Deep learning image burst stacking to reconstruct high-resolution ground-based solar observations
Christoph Schirninger, Robert Jarolim, Astrid M. Veronig +1
Large aperture ground based solar telescopes allow the solar atmosphere to be resolved in unprecedented detail. However, observations are limited by Earths turbulent atmosphere, re…
PINN ME: A Physics-Informed Neural Network Framework for Accurate Milne-Eddington Inversions of Solar Magnetic Fields
Robert Jarolim, Momchil E. Molnar, Benoit Tremblay +2
Spectropolarimetric inversions of solar observations are fundamental for the estimation of the magnetic field in the solar atmosphere. However, instrumental noise, computational re…
Detecting and sizing the Earth with PLATO: A feasibility study based on solar data
A. F. Krenn, M. Lendl, S. Sulis +8
Context. The PLAnetary Transits and Oscillations of stars (PLATO) mission will observe the same area of the sky continuously for at least two years in an effort to detect transit s…
Magnetic Field Evolution of the Solar Active Region 13664
Robert Jarolim, Astrid Veronig, Stefan Purkhart +2
On 2024 May 10/11, the strongest geomagnetic storm since November 2003 has occurred, with a peak Dst index of -412 nT. The storm was caused by NOAA Active Region (AR) 13664, which…
Multipoint study of the rapid filament evolution during a confined C2 flare on 28 March 2022, leading to eruption
Stefan Purkhart, Astrid M. Veronig, Bernhard Kliem +5
We studied the rapid filament evolution in AR 12975 during a confined C2 flare on 28 March 2022, which led to an eruptive M4 flare 1.5 h later. It is characterized by the breakup o…
A Universal Method for Solar Filament Detection from H-alpha Observations using Semi-supervised Deep Learning
Andrea Diercke, Robert Jarolim, Christoph Kuckein +7
Filaments are omnipresent features in the solar atmosphere. Their location, properties and time evolution can provide information about changes in solar activity and assist the ope…
SuNeRF: 3D reconstruction of the solar EUV corona using Neural Radiance Fields
Robert Jarolim, Benoit Tremblay, Andrés Muñoz-Jaramillo +8
To understand its evolution and the effects of its eruptive events, the Sun is permanently monitored by multiple satellite missions. The optically-thin emission of the solar plasma…
Instrument-To-Instrument translation: Instrumental advances drive restoration of solar observation series via deep learning
Robert Jarolim, Astrid M. Veronig, Werner Pötzi +1
The constant improvement of astronomical instrumentation provides the foundation for scientific discoveries. In general, these improvements have only implications forward in time,…
The Link Between Non-Thermal Velocity and Free Magnetic Energy in Solar Flares
James McKevitt, Robert Jarolim, Sarah Matthews +5
The cause of excess spectral line broadening (non-thermal velocity) is not definitively known, but given its rise before and during flaring, the causal processes hold clues to unde…
Advancing solar magnetic field extrapolations through multi-height magnetic field measurements
Robert Jarolim, Benoit Tremblay, Matthias Rempel +4
Non-linear force-free extrapolations are a common approach to estimate the 3D topology of coronal magnetic fields based on photospheric vector magnetograms. The force-free assumpti…
Multi-point study of the energy release and transport in the 28 March 2022, M4-flare using STIX, EUI, and AIA during the first Solar Orbiter nominal mission perihelion
Stefan Purkhart, Astrid M. Veronig, Ewan C. M. Dickson +6
We present a case study of an M4-class flare on 28 March 2022, near Solar Orbiter's first science perihelion (0.33 AU). Solar Orbiter was 83.5° west of the Sun-Earth line, making t…
CME Propagation Through the Heliosphere: Status and Future of Observations and Model Development
M. Temmer, C. Scolini, I. G. Richardson +31
The ISWAT clusters H1+H2 have a focus on interplanetary space and its characteristics, especially on the large-scale co-rotating and transient structures impacting Earth. SIRs, gen…
SuNeRF: Validation of a 3D Global Reconstruction of the Solar Corona Using Simulated EUV Images
Kyriaki-Margarita Bintsi, Robert Jarolim, Benoit Tremblay +8
Extreme Ultraviolet (EUV) light emitted by the Sun impacts satellite operations and communications and affects the habitability of planets. Currently, EUV-observing instruments are…
Kanzelhöhe Observatory: instruments, data processing and data products
Werner Pötzi, Astrid Veronig, Robert Jarolim +5
Kanzelhöhe Observatory for Solar and Environmental Research (KSO) of the University of Graz (Austria) is in continuous operation since its foundation in 1943. Since the beginning i…
Multi-channel coronal hole detection with convolutional neural networks
R. Jarolim, A. M. Veronig, S. Hofmeister +4
We develop a reliable, fully automatic method for the detection of coronal holes, that provides consistent full-disk segmentation maps over the full solar cycle and can perform in…