2025 ARTEMIS SCIENCE NUGGETS

SUMMARIES OF ARTEMIS RESEARCH

Production rates of the lunar exosphere and pickup ions are derived based on the ARTEMIS data. Heavy ion outflow from the Moon could contribute comparably to those produced in the ionosphere to the terrestrial environment. theoretical model. Read more.

Global structure of the cislunar magnetotail and its substorm evolution are reconstructed by mining ARTEMIS and other mission data. Reconstructions show that substorms likely involve the formation of an X-line in the midtail at or beyond 40 R_E and magnetic flux accumulation and thin current sheet formation earthward of it. Thin current sheets may also exist at lunar distance near O-lines of the corresponding plasmoids or flux ropes.

The absorption of ambient particles and the production of new secondary electrons often leads to plasma instabilities, which in turn generate a variety of waves in the electrostatic and/or electromagnetic fields. Here, we report ARTEMIS observations of a particular type of wave known as an electron cyclotron harmonic (ECH) wave. Read more.

Using data from the Acceleration, Reconnection, Turbulence and Electrodynamics of the Moon's Interaction with the Sun (ARTEMIS) spacecraft, we present the first observational evidence of these predicted electrostatic shocks Read more.