Terrestrial kilometric radiation: 1: spatial structures studies

Technical Report · Mon Mar 01 00:00:00 EST 1976

OSTI ID:7340324

Alexander, J K; Kaiser, M L

Observations are presented of lunar occultations of the earth at 250 kHz, obtained with the Radio-Astronomy-Explorer-2 satellite, which were used to derive two-dimensional maps of the location of the sources of terrestrial kilometric radiation (TKR). By examining the two dimensional source distributions as a function of the observer's location (lunar orbit) with respect to the magnetosphere, the average three dimensional location of the emission regions can be estimated. Although TKR events at 250-kHz can often be observed at projected distances corresponding to the 250 kHz electron gyro or plasma level (approximately 2 earth radii), many events are observed much farther from the earth (between 5 and 15 earth radii). Dayside emission apparently in the region of the polar cusp and the magnetosheath and night emission associated with regions of the magnetotail are examined. The nightside emission is suggestive of a mechanism involving plasma sheet electron precipitation in the pre-midnight sector. (auth)

• Research Organization: National Aeronautics and Space Administration, Greenbelt, Md. (USA). Goddard Space Flight Center
• OSTI ID: 7340324
• Report Number(s): N-76-19652; NASA-TM-X-71081; X-693-76-47; TRN: 77-003872
• Resource Relation: Other Information: Subm-Submitted for Publication
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
MAGNETOSPHERE
LONG WAVE RADIATION
EARTH PLANET
ELECTRON PRECIPITATION
EMISSION
KHZ RANGE 100-1000
MAGNETOSHEATH
MAGNETOTAIL
MAPS
SOLAR WIND
CHARGED-PARTICLE PRECIPITATION
EARTH ATMOSPHERE
ELECTROMAGNETIC RADIATION
FREQUENCY RANGE
KHZ RANGE
PLANETS
RADIATIONS
RADIOWAVE RADIATION
SOLAR ACTIVITY
640203* - Atmospheric Physics- Magnetospheric Phenomena- (-1987)
640107 - Astrophysics & Cosmology- Planetary Phenomena