How the Shortest and Longest HILDCAAs Shaped Earth Outer Radiation Belt During the Van Allen Probes Era?Ayushi Nema, Ankush Bhaskar, Kamlesh N. Pathak, Abhirup Dattahttps://arxiv.org/abs/2505.16598
How the Shortest and Longest HILDCAAs Shaped Earth Outer Radiation Belt During the Van Allen Probes Era?High-intensity long-duration continuous auroral electrojet (AE) activity (HILDCAA) events are associated with the enhancement of relativistic electron fluxes in the inner magnetosphere. The physical mechanisms underlying this enhancement are not well established yet. In this study, we analyze two contrasting HILDCAA events, one representing the shortest and the other the longest duration, using NASA Van Allen Probes observations, which have provided unprecedented, unique in-situ observations of…