NDLI: Terrestrial kilometric radiation: 2: emission from the magnetospheric cusp and dayside magnetosheath

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Terrestrial kilometric radiation: 2: emission from the magnetospheric cusp and dayside magnetosheath

Content Provider	NASA Technical Reports Server (NTRS)
Author	Alexander, J. K. Kaiser, M. L.
Copyright Year	1976
Description	Measurements of the location of sources of terrestrial kilometric radiation obtained with the lunar orbiting Radio Astronomy Explorer-2 satellite have revealed a class of emission associated with the cusp and dayside magnetosheath. At frequencies near 250 kHz this emission is observed at radial distances between 2 and 20 R sub E at magnetic latitudes of 75 deg to 80 deg and is most often detected during periods of auroral activity (AE or approximately = 250) and southward orientation of the interplanetary magnetic field vertical component. During very disturbed times, the emission at the lowest frequencies ( or approximately = 200 kHz) appears to come from the dayside magnetosheath at distances or approximately = 12 R sub E. Whenever the geomagnetic dipole is tilted significantly with respect to the ecliptic pole ( or approximately = 10 deg) the cusp emission is confined to the hemisphere containing the sub solar point. The measurements also suggest that the region of cusp emission is rather narrowly confined in longitude to within + or - a few hours of the noon meridian.
File Size	1682715
Page Count	29
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19760020664
Archival Resource Key	ark:/13960/t8vb2xj85
Language	English
Publisher Date	1976-06-01
Access Restriction	Open
Subject Keyword	Geophysics Earth Magnetosphere Daytime Auroras Magnetosheath Explorer 2 Satellite Low Frequencies Solar Wind Occultation Magnetic Storms Polar Regions Interplanetary Magnetic Fields Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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