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Filters: Author is Robert A. Helliwell  [Clear All Filters]
1977
Helliwell, RA.  1977.  Modification of the propagation characteristics of the ionosphere (and the magnetosphere) by injection into the magnetosphere of whistler-mode waves. AGARD Artificial Modification of Propagation Media 8 p (SEE N77-19530 10-42).
Stiles, G  S, Helliwell RA.  1977.  Stimulated growth of coherent VLF waves in the magnetosphere. Journal of Geophysical Research. 82:523-530.
Dingle, B K.  1977.  Burst Precipitation of Energetic Electrons from the Magnetosphere.
Inan, US.  1977.  Non-linear Gyroresonant Interactions of Energetic Particles and Coherent VLF Waves in the Magnetosphere.
III, N ST.  1977.  Whistler Propagation in a Distorted Quiet-time Model Magnetosphere.
Raghuram, R.  1977.  Supperssion Effects Associated with VLF Transmitter Signals Injected into the Magnetosphere.
Inan, US, Bell TF, Helliwell RA.  1977.  Coherent wave induced particle precipitation into the upper atmosphere. NATO ASIC Proc. 35: Dynamical and Chemical Coupling Between the Neutral and Ionized Atmosphere. :169-174.
1976
Burtis, W  J, Helliwell RA.  1976.  Magnetospheric chorus - Occurrence patterns and normalized frequency. Planetary and Space Science. 24:1007-1024.
1975
Helliwell, RA.  1975.  Coherent VLF waves in the magnetosphere. Royal Society of London Philosophical Transactions Series A. 280:137-149.
Helliwell, RA, Crystal T  L.  1975.  Reply. Journal of Geophysical Research. 80:4399-4400.
Helliwell, RA, Katsufrakis J  P, Bell TF, Raghuram R.  1975.  VLF line radiation in the earth's magnetosphere and its association with power system radiation. Journal of Geophysical Research. 80:4249-4258.
Stiles, G  S, Helliwell RA.  1975.  Frequency-time behavior of artificially stimulated VLF emissions. Journal of Geophysical Research. 80:608-618.
Burtis, W  J, Helliwell RA.  1975.  Magnetospheric chorus - Amplitude and growth rate. Journal of Geophysical Research. 80:3265-3270.
Leavitt, MK.  1975.  A Frequency-Tracking Direction Finder for Whistlers and Other Very Low Frequency Signals.
Crystal, TL.  1975.  Nonlinear Currents Stimulated by Monochromatic Whistler-Mode (WM) Waves in the Magnetosphere.
1974
Helliwell, RA.  1974.  Controlled VLF Wave Injection Experiments in the Magnetosphere. Space Science Reviews. 15:781-802.
Stiles, GS.  1974.  Digital Spectra of Artificially Stimulated VLF Emissions.
Ho, D.  1974.  Quasi-Periodic (QP) VLF Emissions in the Magnetosphere.
Dejnakarintra, M.  1974.  A Theoretical Study of Electrical Coupling Between the Troposphere, Ionosphere, and Magnetosphere.
Siren, JC.  1974.  Fast Hisslers: A Form of Magnetospheric Radio Emissions.
Burtis, WJ.  1974.  Magnetospheric Chorus.
Dunckel, N.  1974.  Low-Frequency Radio Emissions from the Earth and Sun.
Helliwell, RA, Katsufrakis JP.  1974.  VLF Wave Injection Into the Magnetosphere From Siple Station, Antarctica. JOURNAL OF GEOPHYSICAL RESEARCH. 79
1973
Bernard, LC.  1973.  Amplitude Variations of Whistler-mode Signals Caused by their Interaction with Energetic Electrons of the Magnetosphere.
Helliwell, RA, Crystal T  L.  1973.  A Feedback Model of Cyclotron Interaction between Whistler-Mode Waves and Energetic Electrons in the Magnetosphere. Journal of Geophysical Research. 78:7357-7371.