Within the framework of the SPEARHEAD project, we present a new catalogue of high energy particles observed by SOHO/ERNE in the last three solar cycles (1996–2024), with protons of >100 MeV.
The catalogue is based on a systematic identification of solar energetic particle (SEP) events and provides a consistent characterization of their main properties, including peak flux and fluence derived from SOHO/EPHIN measurements.
It also includes comprehensive associations with solar activity, such as X-ray flares, coronal mass ejections (CMEs), radio bursts, gamma-ray emission, and ground-level enhancements (GLEs).
In its current version, the catalogue contains 172 high-energy proton events. This dataset offers a valuable resource to investigate the conditions leading to the most energetic SEP events and to improve our understanding of particle acceleration and transport in the heliosphere.
The release of the catalogue is accompanied by a research article, Jarry et al. (2026), describing its methodology and presenting first statistical results. These initial analyses highlight key trends in the occurrence of >100 MeV SEP events and their links to solar eruptions, providing new insights into the drivers of high-energy particle acceleration.