TY - JOUR
T1 - Electron Scattering by Highly Oblique Quasi-Electrostatic Chorus Waves Under Realistic Magnetospheric Conditions
AU - Yang, Lixian
AU - Liu, Si
AU - Gao, Zhonglei
AU - Li, Wenya
AU - Xiao, Fuliang
AU - He, Zhaoguo
AU - Chen, Xingran
AU - Jin, Yuyue
AU - He, Qian
AU - Deng, Zhoukun
AU - Tang, Jiawen
N1 - Publisher Copyright:
© 2026. The Author(s).
PY - 2026/6/28
Y1 - 2026/6/28
N2 - Using Van Allen Probes data (2013–2015), we report that highly oblique chorus waves frequently occur in low-density regions where (Formula presented.). These waves exhibit an electric-to-magnetic energy ratio (Formula presented.), much higher than the typical (Formula presented.) for quasi-parallel chorus, indicating a quasi-electrostatic nature, termed highly oblique quasi-electrostatic (HOQE) chorus. Incorporating realistic wave properties and plasma environments, numerical modeling shows that HOQE lower-band chorus with the central wave normal angle (Formula presented.) can efficiently scatter relativistic electrons up to 2 MeV near (Formula presented.) equatorial pitch angles primarily via higher-order resonance. Additionally, HOQE upper-band chorus (Formula presented.) drives strong diffusion of tens of keV electrons at moderate pitch angles. These findings reveal a previously overlooked pathway for MeV electron loss, advancing our understanding of chorus wave-particle interactions.
AB - Using Van Allen Probes data (2013–2015), we report that highly oblique chorus waves frequently occur in low-density regions where (Formula presented.). These waves exhibit an electric-to-magnetic energy ratio (Formula presented.), much higher than the typical (Formula presented.) for quasi-parallel chorus, indicating a quasi-electrostatic nature, termed highly oblique quasi-electrostatic (HOQE) chorus. Incorporating realistic wave properties and plasma environments, numerical modeling shows that HOQE lower-band chorus with the central wave normal angle (Formula presented.) can efficiently scatter relativistic electrons up to 2 MeV near (Formula presented.) equatorial pitch angles primarily via higher-order resonance. Additionally, HOQE upper-band chorus (Formula presented.) drives strong diffusion of tens of keV electrons at moderate pitch angles. These findings reveal a previously overlooked pathway for MeV electron loss, advancing our understanding of chorus wave-particle interactions.
UR - https://www.scopus.com/pages/publications/105041662681
U2 - 10.1029/2026GL122429
DO - 10.1029/2026GL122429
M3 - 文章
AN - SCOPUS:105041662681
SN - 0094-8276
VL - 53
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 12
M1 - e2026GL122429
ER -