Abstract
Auroral hiss is attributed to amplified Cerenkov emission of nearly resonant whistlers. Such emission occurs only when the precipitating electron flux corresponds to a one‐dimensional distribution with a peak in parallel energy. Only particles below this peak contribute to the amplified emission. The back reaction of the hiss on the electrons is treated by using quasi‐linear theory. The primary effect is to reduce the positive gradient in energy below the peak. This tends to suppress the generation of the waves. A relation between the expected intensity of the hiss and the properties of the stream is derived. The observational data are consistent with limitation of the intensity by quasi‐linear relaxation.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
