Modeling the Two-Dimensional Propagation of Whistler-Mode Chorus Waves in the Magnetic Peaks

Abstract

Recent studies have shown that chorus waves can be guided by magnetic peaks based on one-dimensional theories and simulations. Despite these findings, such ducting propagation within the inner magnetosphere remains unconfirmed. In this research, we conduct detailed ray tracing simulations to explore the two-dimensional behavior of chorus waves in regions characterized by magnetic peaks. Our findings demonstrate that chorus waves can indeed be guided by magnetic peaks, undergoing repeated reflections on both sides of the peak. Additionally, we discuss the physical mechanisms responsible for these repetitive reflections, offering deeper insights into the process. To further enrich our analysis, we performed a parameter analysis to study how different wave frequencies and initial locations influence the propagation characteristics of chorus waves. The results provide a more comprehensive understanding of how whistler-mode waves propagate within the magnetosphere, enhancing our knowledge of wave-particle interactions and the dynamics of space plasma environments.