Determining Parameters of Whistler Waves Trapped in High‐Density Ducts
Abstract
We investigate the possibility of identifying the perpendicular and parallel wavelengths (or wave numbers) of the very‐low‐frequency (VLF) whistler‐mode waves trapped inside the high‐density duct. This will be done by using information about the wave frequency, background magnetic field, and plasma density inside and outside of the duct. This data is collected from observations by the Van Allen Probes satellites. We developed a three‐step procedure based on the analysis of the whistler wave dispersion relation and numerical simulations of the electron‐magnetohydrodynamics model. We use this model to identify the parallel and perpendicular wave numbers of the “most trapped” wave. The first two steps of this procedure identify the ranges of the parallel and perpendicular wavelengths of the waves trapped inside the duct. The third step uses numerical simulations to determine the parameters of the “most trapped” wave from the aforementioned ranges. This procedure has been applied to the retrieved data from the Van Allen Probes in order to analyze the structure of VLF waves observed in the equatorial magnetosphere.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 01, 2021
- Source ID
- 10.1029/2021ja029228
Entities
People
- A. V. Streltsov
- Daniel D. Williams
Organizations
- Air Force Office of Scientific Research
- Embry–Riddle Aeronautical University