AUTHOR=Hosseini Poorya , Harid Vijay , GoĊ‚kowski Mark , Tu Weichao TITLE=Backward test particle simulation of nonlinear cyclotron wave-particle interactions in the radiation belts JOURNAL=Frontiers in Astronomy and Space Sciences VOLUME=11 YEAR=2024 URL=https://www.frontiersin.org/journals/astronomy-and-space-sciences/articles/10.3389/fspas.2024.1484399 DOI=10.3389/fspas.2024.1484399 ISSN=2296-987X