Statistical Analysis of Transverse Size of Lower Band Chorus Waves Using Simultaneous Multisatellite Observations
Abstract
Chorus waves are known to accelerate or scatter energetic electrons via quasi‐linear or nonlinear wave‐particle interactions in the Earth's magnetosphere. In this letter, by taking advantage of simultaneous observations of chorus waveforms from at least a pair of probes among Van Allen Probes and/or Time History of Events and Macroscale Interactions during Substorms (THEMIS) missions, we statistically calculate the transverse size of lower band chorus wave elements. The average size of lower band chorus wave element is found to be ~315±32 km over L shells of ~5–6. Furthermore, our results suggest that the scale size of lower band chorus tends to be (1) larger at higher L shells; (2) larger at higher magnetic latitudes, especially on the dayside; and (3) larger in the azimuthal direction than in the radial direction. Our findings are crucial to quantify wave‐particle interaction process, particularly the nonlinear interactions between chorus and energetic electrons.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 13, 2019
- Source ID
- 10.1029/2019gl083118
Entities
People
- Oleksiy Agapitov
- Qianli Ma
- Wen Li
- Xiaochen Shen
- Yukitoshi Nishimura
Organizations
- Air Force Office of Scientific Research
- Boston University
- National Aeronautics and Space Administration
- National Science Foundation