Accession Number : ADA119967
Title : Detailed Observations of the Source of Terrestrial Narrowband Electromagnetic Radiation.
Descriptive Note : Progress rept.,
Corporate Author : IOWA UNIV IOWA CITY DEPT OF PHYSICS AND ASTRONOMY
Personal Author(s) : Kurth,W S
PDF Url : ADA119967
Report Date : 27 Aug 1982
Pagination or Media Count : 26
Abstract : We present detailed observations of a region near the terrestrial plasmapause where narrowband electromagnetic radiation (previously called escaping nonthermal continuum radiation) is being generated. These observations show a direct correspondence between the narrowband radio emissions and electron cyclotron harmonic waves near the upper hybrid resonance frequency. In addition, electromagnetic radiation propagating in the Z-mode is observed in the source region which provides an extremely accurate determination of the electron plasma frequency and, hence, density profile of the source region. The data strongly suggest the electrostatic waves and not Cerenkov radiation are the source of the banded radio emissions and clearly define the coupling mechanism which must be described by any viable theory.
Descriptors : *Electromagnetic wave propagation, *Terrestrial radiation, *Radio sources(Astronomy), Narrowband, Electrostatic fields, Cerenkov radiation, Electromagnetic radiation
Subject Categories : Astronomy
Radiofrequency Wave Propagation
Distribution Statement : APPROVED FOR PUBLIC RELEASE