Ancient Energetic Particle Precipitation at an Unmagnetized Planet near a Young Sun
Rebecca Jolitz1, Chuanfei Dong2, Robert J Lillis1, Stephen W Bougher3 and David Brain4, (1)Space Sciences Laboratory, University of California Berkeley, Berkeley, United States, (2)Princeton University, Princeton, NJ, United States, (3)Climate and Space Sciences and Engineering Department, Ann Arbor, MI, United States, (4)Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder, CO, United States
