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 …

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 …

We provide a mathematical description of the imaging concept of the Spectrometer/
Telescope for Imaging X-rays (STIX) onboard Solar Orbiter. Specifically, we describe the …

Aims. We seek to determine to what extent the problem of forward fitting visibilities measured
by the Spectrometer/Telescope Imaging X-rays (STIX) on board Solar Orbiter becomes more …

Context. We present an analysis of a GOES M1. 8 flare with excellent observational
coverage in UV, extreme-UV (EUV), and X-ray, including observations from the Interface …

Models of particle acceleration in solar eruptive events suggest that roughly equal energy
may go into accelerating electrons and ions. However, while previous solar X-ray …

The disparate nature of the thermal–nonthermal energy partition during flares, particularly
during weak flares, is still an open issue. Following the Neupert effect, quantifying the …

Abstract The Solar X-ray Detector (SXD) on-board the Macao Science Satellite-1B (MSS-1B)
was successfully launched via the Chinese Long March-2C rocket on 21 May 2023, and …

We present the first joint spectral and imaging analysis of hard X-ray (HXR) emission from
three microflares observed by the Nuclear Spectroscopic Telescope ARray (NuSTAR) and …

Context. Regularized imaging spectroscopy was introduced for the construction of electron
flux images at different energies from count visibilities recorded by the Reuven Ramaty High …