In 2024 May, the scientific community observed intense solar eruptions that resulted in a
great geomagnetic storm and auroral extensions, highlighting the need to document and …

On 28 October 2021, solar eruptions caused intense and long‐lasting solar energetic
particle (SEP) flux enhancements observed by spacecraft located over a wide longitudinal …

Context. Coronal dimmings are localized regions of reduced emission in the extreme-
ultraviolet (EUV) and soft X-rays formed as a result of the expansion and mass loss by …

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 …

Aims. We studied the first multi-spacecraft high-energy solar energetic particle (SEP) event
of solar cycle 25, which triggered a ground level enhancement on 28 October 2021, using …

How thermal particles are accelerated to suprathermal energies is an unsolved issue,
crucial for many astrophysical systems. We report novel observations of irregular, dispersive …

The characteristics of a hydrogenated amorphous silicon (a-Si: H) detector are presented
here for monitoring in space solar flares and the evolution of strong to extreme energetic …

Context. Filament eruptions and coronal mass ejections (CMEs) reveal large-scale
instabilities of magnetic structures in the solar corona. Some of them are accompanied by …

This paper presents analyses of cosmic-ray-induced neutron measurements spanning from
2016 to 2023 at the Concordia Antarctic high-altitude station. Environmental and systematic …

This study investigates the impact of geomagnetic storms and solar flares on total electron
content (TEC) of the ionosphere of high-latitude auroral station at Tromso (Geog. Lat. 69.66° …