Non-diffusive Transport of Radiation Belt Electrons Resulting from Coherent Monochromatic Ultralow Frequency Waves in a Realistic Magnetospheric Geometry

Relativistic electrons in the outer radiation belt are highly dynamic and respond to interplanetary solar wind structures passing by and ultimately interacting with the Earth's magnetic field. As these interplanetary structures interact with the Earth's magnetic field, the time dependent perturbations of the solar wind density and speed can set up oscillations on the Earth's magnetic field lines. These oscillations in turn can interact with inner magnetospheric particle populations. In particular, ultra-low frequency (ULF) waves with frequencies of a few mHz can result in radial transport and energization of inner magnetospheric populations as these particles drift around the Earth. Specifically, we are interested in understanding the electron dynamics resulting from this drift-resonant interaction with ULF waves. To achieve this, we will build off previous successes in modeling the electron drift-resonant interaction using global simulations that include solar wind conditions that are known to efficiently generate ULF waves in Earth's magnetic field [Hartinger et al., 2015, doi:10.1002/2014JA020401; Komar et al., 2017, doi:10.1002/2017JA024163]. This study will present results from simulations modeling the ring current and radiation belt electron populations in the bounce-averaged, kinetic Comprehensive Inner Magnetosphere-Ionosphere (CIMI) code coupled with the Block Adaptive Tree Solar Wind Roe-type Upwind Scheme (BATS-R-US) global magnetospheric magnetohydrodynamic (MHD) code using an idealized ULF wave solar wind density driver. We will present results of our simulation study to investigate how the electron drift-resonant conditions change in response to different initial conditions from the MIN and MAX conditions of the AE8 inner magnetosphere model. We will also present results from simulations where the idealized ULF solar wind driver employs different wave amplitudes and frequencies which will change the strength and resonance conditions of the energetic electrons.