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Simultaneous excitation of broadband electrostatic noise and electron cyclotron waves in the plasma sheet
Author(s) -
Berchem Jean P.,
Schriver David,
AshourAbdalla Maha
Publication year - 1991
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/91gl00852
Subject(s) - cyclotron , physics , plasma sheet , atomic physics , electron , plasma , harmonics , excitation , computational physics , dispersion (optics) , lower hybrid oscillation , waves in plasmas , optics , magnetosphere , nuclear physics , quantum mechanics , voltage
Electron cyclotron harmonics and broadband electrostatic noise (BEN) are often observed in the Earth's outer plasma sheet. While it is well known that ion beams in the plasma sheet boundary layer can generate BEN, new two dimensional electrostatic simulations show that field‐aligned ion beams with a small perpendicular ring distribution can drive not only BEN, but also electron cyclotron harmonic (ECH) waves simultaneously. Simulation results are presented here using detailed diagnostics of wave properties, including dispersion relations of all wave modes.