Phys.org  August 28, 2024 Observations of heated O+ ions in the magnetosphere are consistent with resonant wave–particle interactions. By contrast, observations of cold supersonic H+ flowing out of the polar wind suggest the presence of an electrostatic field. An international team of researchers (USA – NASA Goddard Space Flight Center, Catholic University of America, Embry-Riddle Aeronautical University, University of New Hampshire, University of Colorado at Boulder, UC Berkeley, Penn State University, NASA Wallops Flight Facility, UK, Norway, Sweden, Svalbard and Jan Mayen) described the existence of an electric potential drop between 250 km and 768 km from a planetary electrostatic field generated […]