On the magnetosphere-ionosphere coupling during the May 2021 Geomagnetic storm.

Mirko Piersanti1, Dario Del Moro2, Alexandra Parmentier3, Matteo Martucci2, Francesco Palma4, Alessandro Sotgiu4, Christina Plainaki5, Giulia D'Angelo3, Francesco Berrilli2, Dario Recchiuti6, Emanuele Papini7, Luca Giovannelli2, Gianluca Napoletano1, Roberto Iuppa6, Piero Diego8, Antonio Cicone1, Pietro Ubertini3, Roberto Battiston6, Roberta Sparvoli2 and Piergiorgio Picozza2, (1)University of L'Aquila, L'Aquila, Italy, (2)University of Rome Tor Vergata, Physics, Rome, Italy, (3)INAF-IAPS, Rome, Italy, (4)INFN, Rome, Italy, (5)ASI - Italian Space Agency, Rome, Italy, (6)University of Trento, Trento, Italy, (7)Università degli Studi di Firenze, Florence, Italy, (8)INAF - Istituto di Astrofisica e Planetologia Spaziali, Rome, Italy