High Resolution Spectrograms of Ion-Acoustic Waves in the Solar Wind.
Abstract
Ion-acoustic waves, similar to those detected by the helios spacecraft from 0.3 to 1.0 AU, have now been detected by the Voyager spacecraft in the solar wind out to heliocentric radial distances of 1.7 AU. High bit rate waveform measurements provide the first high resolution, frequency-time spectrograms of these waves. The Voyager spectrograms show that the ion-acoustic waves consist of narrow-band bursts which last for a few seconds or less. The center frequency of the bursts can fluctuate rapidly in frequency, usually in the range between the electron and ion plasma frequency f sub p(-) and f sub p(+). (These waves have been previously referred to as f sub p(+) < f < f sub p(-) noise.)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1978
- Accession Number
- ADA054912
Entities
People
- Donald A. Gurnett
- F. L. Scarf
- William S. Kurth
Organizations
- University of Iowa