High Latitude Electromagnetic Plasma Wave Emissions.
This paper reviews the principal types of electromagnetic plasma wave emissions produced in the high latitude auroral regions. Three types of radiation are described: auroral kilometric radiation, auroral hiss, and Z-mode radiation. Auroral kilometric radiation is a very intense radio emission gener...
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ftdtic:ADA115788 2023-05-15T17:04:16+02:00 High Latitude Electromagnetic Plasma Wave Emissions. Gurnett,Donald A IOWA UNIV IOWA CITY DEPT OF PHYSICS AND ASTRONOMY 1982-05 text/html http://www.dtic.mil/docs/citations/ADA115788 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA115788 en eng http://www.dtic.mil/docs/citations/ADA115788 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Atomic and Molecular Physics and Spectroscopy Plasma Physics and Magnetohydrodynamics Radiofrequency Wave Propagation *Plasma waves *Electromagnetic radiation *Emission spectra High latitudes Radiation Aurorae Electrons Magnetic fields Broadband Low energy Intensity Electromagnetic plasma wave emissions Text 1982 ftdtic 2016-02-19T08:06:26Z This paper reviews the principal types of electromagnetic plasma wave emissions produced in the high latitude auroral regions. Three types of radiation are described: auroral kilometric radiation, auroral hiss, and Z-mode radiation. Auroral kilometric radiation is a very intense radio emission generated in the free space R-X mode by electrons associated with the formation of discrete auroral arcs in the local evening. Current theories suggest that this radiation is an electron cyclotron resonance instability driven by an enhanced loss cone in the auroral acceleration region at altitudes of about 1 to 2 RE. Auroral hiss is a somewhat weaker whistler-mode emission generated by low energy (100 eV to 10 keV) auroral electrons. The auroral hiss usually has a V-shaped frequency-time spectrum caused by a frequency dependent beaming of the whistler mode into a conical beam directed upward or downward along the magnetic field. Z-mode radiation is a recently discovered broadband emission similar in some respects to auroral hiss, except that this radiation is propagating in the Z-mode. Presented at the Nobel Symposium on High Latitude Space Plasma Physics, 22-25 Mar 82, Kiruna (Sweden). Sponsored in part by Contracts NAS5-25690, NGL-16-001-002 and NGL-16-001-043. Text Kiruna Defense Technical Information Center: DTIC Technical Reports database Kiruna |
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Defense Technical Information Center: DTIC Technical Reports database |
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language |
English |
topic |
Atomic and Molecular Physics and Spectroscopy Plasma Physics and Magnetohydrodynamics Radiofrequency Wave Propagation *Plasma waves *Electromagnetic radiation *Emission spectra High latitudes Radiation Aurorae Electrons Magnetic fields Broadband Low energy Intensity Electromagnetic plasma wave emissions |
spellingShingle |
Atomic and Molecular Physics and Spectroscopy Plasma Physics and Magnetohydrodynamics Radiofrequency Wave Propagation *Plasma waves *Electromagnetic radiation *Emission spectra High latitudes Radiation Aurorae Electrons Magnetic fields Broadband Low energy Intensity Electromagnetic plasma wave emissions Gurnett,Donald A High Latitude Electromagnetic Plasma Wave Emissions. |
topic_facet |
Atomic and Molecular Physics and Spectroscopy Plasma Physics and Magnetohydrodynamics Radiofrequency Wave Propagation *Plasma waves *Electromagnetic radiation *Emission spectra High latitudes Radiation Aurorae Electrons Magnetic fields Broadband Low energy Intensity Electromagnetic plasma wave emissions |
description |
This paper reviews the principal types of electromagnetic plasma wave emissions produced in the high latitude auroral regions. Three types of radiation are described: auroral kilometric radiation, auroral hiss, and Z-mode radiation. Auroral kilometric radiation is a very intense radio emission generated in the free space R-X mode by electrons associated with the formation of discrete auroral arcs in the local evening. Current theories suggest that this radiation is an electron cyclotron resonance instability driven by an enhanced loss cone in the auroral acceleration region at altitudes of about 1 to 2 RE. Auroral hiss is a somewhat weaker whistler-mode emission generated by low energy (100 eV to 10 keV) auroral electrons. The auroral hiss usually has a V-shaped frequency-time spectrum caused by a frequency dependent beaming of the whistler mode into a conical beam directed upward or downward along the magnetic field. Z-mode radiation is a recently discovered broadband emission similar in some respects to auroral hiss, except that this radiation is propagating in the Z-mode. Presented at the Nobel Symposium on High Latitude Space Plasma Physics, 22-25 Mar 82, Kiruna (Sweden). Sponsored in part by Contracts NAS5-25690, NGL-16-001-002 and NGL-16-001-043. |
author2 |
IOWA UNIV IOWA CITY DEPT OF PHYSICS AND ASTRONOMY |
format |
Text |
author |
Gurnett,Donald A |
author_facet |
Gurnett,Donald A |
author_sort |
Gurnett,Donald A |
title |
High Latitude Electromagnetic Plasma Wave Emissions. |
title_short |
High Latitude Electromagnetic Plasma Wave Emissions. |
title_full |
High Latitude Electromagnetic Plasma Wave Emissions. |
title_fullStr |
High Latitude Electromagnetic Plasma Wave Emissions. |
title_full_unstemmed |
High Latitude Electromagnetic Plasma Wave Emissions. |
title_sort |
high latitude electromagnetic plasma wave emissions. |
publishDate |
1982 |
url |
http://www.dtic.mil/docs/citations/ADA115788 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA115788 |
geographic |
Kiruna |
geographic_facet |
Kiruna |
genre |
Kiruna |
genre_facet |
Kiruna |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA115788 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
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1766058331601895424 |