Zobrazeno 1 - 10
of 305
pro vyhledávání: '"Veronig, Astrid M."'
Autor:
Battaglia, Andrea Francesco, Krucker, Säm, Veronig, Astrid M., Stiefel, Muriel Zoë, Warmuth, Alexandar, Benz, Arnold O., Ryan, Daniel F., Collier, Hannah, Harra, Louise
In general, large solar flares are more efficient at accelerating high-energy electrons than microflares. Nonetheless, we sometimes observe microflares that accelerate electrons to high energies. We statistically characterize 39 microflares with stri
Externí odkaz:
http://arxiv.org/abs/2409.14466
Publikováno v:
Astron. Astrophys. 2024
Aims. The space radiation environment conditions and the maximum expected coronal mass ejection (CME) speed are being assessed through the investigation of scaling laws between the peak proton flux and fluence of Solar Energetic Particle (SEP) events
Externí odkaz:
http://arxiv.org/abs/2407.16479
Autor:
Purkhart, Stefan, Veronig, Astrid M., Kliem, Bernhard, Jarolim, Robert, Dissauer, Karin, Dickson, Ewan C. M., Podladchikova, Tatiana, Krucker, Säm
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 of the filament, the disappearance of its southern half, and the flow o
Externí odkaz:
http://arxiv.org/abs/2407.07777
Coronal jets are believed to be the miniature version of large-scale solar eruptions. In particular, the eruption of a mini-filament inside the base arch is suggested to be the trigger and even driver of blowout jets. Here we propose an alternative t
Externí odkaz:
http://arxiv.org/abs/2406.02783
Filament eruptions often lead to coronal mass ejections (CMEs) on the Sun and are one of the most energetic eruptive phenomena in the atmospheres of other late-type stars. However, the detection of filament eruptions and CMEs on stars beyond the sola
Externí odkaz:
http://arxiv.org/abs/2405.13671
Autor:
Kurt, Victoria G., Veronig, Astrid M., Fleishman, Gregory D., Hinterreiter, Jürgen, Tschernitz, Johannes, Lysenko, Alexandra L.
Publikováno v:
A&A 686, A195 (2024)
The 2003 October 28 (X17.2) eruptive flare was a unique event. The coronal electric field and the {\pi}-decay {\gamma}-ray emission flux had the highest values ever inferred in solar flares. This study reveals physical links between the magnetic reco
Externí odkaz:
http://arxiv.org/abs/2403.08135
Autor:
Diercke, Andrea, Jarolim, Robert, Kuckein, Christoph, Manrique, Sergio J. González, Ziener, Marco, Veronig, Astrid M., Denker, Carsten, Pötzi, Werner, Podladchikova, Tatiana, Pevtsov, Alexei A.
Publikováno v:
A&A 686, A213 (2024)
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 operational space weather forecast. Therefore, filaments have to be ident
Externí odkaz:
http://arxiv.org/abs/2402.15407
Autor:
Saqri, Jonas, Veronig, Astrid M., Battaglia, Andrea Francesco, Dickson, Ewan C. M., Gary, Dale E., Krucker, Säm
We investigate two microflares of GOES classes A9 and C1 (after background subtraction) observed by STIX onboard Solar Orbiter with exceptionally strong nonthermal emission. We complement the hard X-ray imaging and spectral analysis by STIX with co-t
Externí odkaz:
http://arxiv.org/abs/2312.06856
Autor:
Jarolim, Robert, Tremblay, Benoit, Rempel, Matthias, Molnar, Momchil, Veronig, Astrid M., Thalmann, Julia K., Podladchikova, Tatiana
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 assumption is a valid approximation at coronal heights, but for the dense plas
Externí odkaz:
http://arxiv.org/abs/2312.06823
Autor:
Jain, Shantanu, Podladchikova, Tatiana, Chikunova, Galina, Dissauer, Karin, Veronig, Astrid M.
Coronal mass ejections (CMEs) are solar eruptions of plasma and magnetic fields that significantly impact Space Weather, causing disruptions in technological systems and potential damage to power grids when directed towards Earth. Traditional coronag
Externí odkaz:
http://arxiv.org/abs/2311.13942