STIX workshop

Session

Session 7

23 Jul 2026, 14:00

DIAS Burlington Road

11. Hard X-ray solar flare observations by the Measuring Directivity to Determine Electron Anisotropy (MeDDEA) instrument on the PADRE CubeSat Observatory

Olivier Limousin (CEA Saclay, DRF/IRFU/Astrophysics Division)

23/07/2026, 14:00

MeDDEA, PADRE, and multi-viewpoint HXR observations

Talk

Solar flares are known to efficiently accelerate particles to high energies, yet the underlying acceleration mechanism remains poorly understood. Jeffrey et al. (2024) have shown that stereoscopic observations of hard X-rays can constrain the angular distribution of accelerated electrons and provide important new information on the acceleration mechanism in solar flares. The...

10. Observing a solar flare from two perspectives: First MeDDEA–STIX results

Muriel Zoë Stiefel

23/07/2026, 14:20

MeDDEA, PADRE, and multi-viewpoint HXR observations

Talk

The MeDDEA instrument aboard the CubeSat PADRE employs the same detector technology as STIX on Solar Orbiter, but operates from Earth orbit. This configuration enables unique multi-perspective observations of solar flares, allowing direct comparisons between measurements obtained from different viewing angles.

In this talk, we present the first solar flare observations recorded by MeDDEA....

22. Joint STIX and HXI Observations of Solar Flares and Analysis of Behind-the-Limb Flares

Karol Kułaga (Space Research Centre, Polish Academy of Sciences)

23/07/2026, 14:40

MeDDEA, PADRE, and multi-viewpoint HXR observations

Talk

We present a catalogue of joint solar flare observations obtained by the STIX and HXI instruments, currently containing more than 1,000 events. Within this catalogue, we identified a subset of flares that appear behind the solar limb for one of the instruments. Along with the catalogue, we will present a case study demonstrating the analysis of a selected multisourced behind-the-limb flare...

18. CEA LDE3 statistical study of STIX flares from 2024 data

Susanna Parenti (CEA DAp Université Paris-Saclay, Université Paris Cité, CNRS)

23/07/2026, 15:00

Flare catalogues, statistics, and data products

Talk

The CEA LDE3 STIX group is developing tools for flares’ statistical studies. These include allowing a flare’s selection using various criteria, such as energy bins, detector’s pixels, peak intensity. The resulting catalogue can be used for the analysis of the temporal evolution of the high and low-energy location emission within the active region of interest and of the hardness of the energy...