Electron-cyclotron maser emission from the planets and the starsAuroral kilometric radiation (AKR), Jupiter's decametric radio emission, microwave spike bursts from the sun, and related bursts from flare stars and close binaries, have all been attributed to the electron-cyclotron maser instability. Although all of these are produced by the same instability, the plasma conditions in the source regions differ; for the planets the ratio of the plasma frequency to the electron-cyclotron frequency, Omega(e), is less than about unity whereas for the sun and stars it is greater than about 1. It is shown that as this ratio increases, the frequency of the emissions moves to higher harmonics of Omega(e) and the mode changes from electromagnetic to electrostatic. Implications for AKR, microwave spike bursts and related bursts from the stars are discussed.
Document ID
19870033467
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Winglee, R. M. (California, University Los Angeles, United States)
Dulk, G. A. (Colorado, University Boulder, United States)