Uploaded July 2022 | Updated September 2026, 2 hours ago
full title: Energy dependence of galactic cosmic-ray variations: lessons learned with LISA Pathfinder for the LISA test-mass charging
Low-uncertainty measurements of the galactic cosmic-ray (GCR) flux variations carried out with a particle detector above a few tens of MeV aboard the LISA Pathfinder spacecraft and neutron monitor observations allowed us to study the energy dependence of the GCR flux short-term variations in 2016-2017. An estimate of the test-mass charging during recurrent and non-recurrent Forbush decreases has been carried out for LISA Pathfinder. A dedicated multi-detector system for cosmic-ray observations aboard the three LISA spacecraft would allow us for in situ monitoring of the test mass charging variations due to the passage of solar wind high-speed streams and interplanetary counterparts of coronal mass ejections. These observations will be used to monitor the Coulomb forces on the test masses. Moreover, LISA will constitute a natural observatory of galactic and solar energetic particle events at small (1 degree between three S/C) and large (20 degrees between LISA and Earth) intervals in longitude for 6-10 years during the solar cycle 26.
Authors:
Prof. Catia Grimani (Presenting)
University of Urbino Carlo Bo and INFN, Urbino, Italy
Dr. Mattia Villani
University of Urbino Carlo Bo and INFN, Urbino, Italy
Mr Michele Fabi
University of Urbino Carlo Bo and INFN, Urbino, Italy
Dr. Federico Sabbatini
University of Urbino Carlo Bo and INFN, Urbino, Italy
Dr. Andrea Cesarini
INFN, Florence, Italy
full title: Energy dependence of galactic cosmic-ray variations: lessons learned with LISA Pathfinder for the LISA test-mass charging
Low-uncertainty measurements of the galactic cosmic-ray (GCR) flux variations carried out with a particle detector above a few tens of MeV aboard the LISA Pathfinder spacecraft and neutron monitor observations allowed us to study the energy dependence of the GCR flux short-term variations in 2016-2017. An estimate of the test-mass charging during recurrent and non-recurrent Forbush decreases has been carried out for LISA Pathfinder. A dedicated multi-detector system for cosmic-ray observations aboard the three LISA spacecraft would allow us for in situ monitoring of the test mass charging variations due to the passage of solar wind high-speed streams and interplanetary counterparts of coronal mass ejections. These observations will be used to monitor the Coulomb forces on the test masses. Moreover, LISA will constitute a natural observatory of galactic and solar energetic particle events at small (1 degree between three S/C) and large (20 degrees between LISA and Earth) intervals in longitude for 6-10 years during the solar cycle 26.
Authors:
Prof. Catia Grimani (Presenting)
University of Urbino Carlo Bo and INFN, Urbino, Italy
Dr. Mattia Villani
University of Urbino Carlo Bo and INFN, Urbino, Italy
Mr Michele Fabi
University of Urbino Carlo Bo and INFN, Urbino, Italy
Dr. Federico Sabbatini
University of Urbino Carlo Bo and INFN, Urbino, Italy
Dr. Andrea Cesarini
INFN, Florence, Italy
