Speaker
Description
Internal charging of large mission satellites is due to galactic cosmic rays and solar particles in the energy range above tens of MeV/n.
Long-, short-term variations of galactic cosmic rays and solar energetic particle events play a relevant role in reducing the sensitivity of space missions. In particular we focus on the ESA Laser Interferometer Space Antenna (LISA) and LISA-like interferometers for gravitational wave detection. Unfortunately, a full monitoring of the interplanetary medium will not be allowed by diagnostics instruments on board LISA. We illustrate the results of a space weather study for this mission carried out by using LISA Pathfinder and Solar Orbiter (EPD/HET and Metis instruments) data.
The criticality of measuring high-energy solar particles and gamma-ray bursts in situ is assessed and methods for the recovery of missing interplanetary plasma parameters (a valid approach for any other mission) is indicated to identify the passage of interplanetary structures that modulate differently the galactic cosmic-ray flux as a function of energy. We finally emphasize the important role of a small particle detector, developed within the INFN HASPIDE-Space project, able to monitor the energy spectrum and the variation of the spatial distribution of solar energetic particles during the evolution of events up to 400-600 MeV.
