Night-time Anomalies in Very Low Frequency Propagation produced by a Galactic X-ray Source at Centaurus

Night-time Anomalies in Very Low Frequency Propagation produced by a Galactic X-ray Source at Centaurus

NIGHT-TIME propagation of very low frequency (VLF) waves in the terrestrial ionosphere shows considerable variability, both in phase and in amplitude, in comparison with the relatively stable daytime conditions. The night-time anomalies are not yet well understood, a number of them being associated...

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Veröffentlicht in:Nature (London) 1970-12, Vol.228 (5276), p.1080-1081
Hauptverfasser: KAUFMANN, PIERRE, DE BARROS, M. H. PAES, VIANNA, E. NEPOMUCENO
Format: Artikel
Sprache:eng
Schlagworte:
AMPLITUDE
COSMIC X-RAY SOURCES/effects on nighttime anomalies in vlf radio propagation in the ionosphere, (E)
FREQUENCY
Humanities and Social Sciences
IONOSPHERE
letter
LOCAL GALAXY
multidisciplinary
N32130 > Physics > Astrophysics > Quasi-stellar, Radio & X-Ray Sources
N32610 > Physics (Atmospheric) > Auroral & Ionospheric Phenomena
RADIO WAVES
Science
Science (multidisciplinary)
WAVE PROPAGATION
X RADIATION
ZONES IONOSPHERE/radio propagation in, effects of galactic x- ray source on nighttime anomalies in vlf, (E)
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Beschreibung
Zusammenfassung:NIGHT-TIME propagation of very low frequency (VLF) waves in the terrestrial ionosphere shows considerable variability, both in phase and in amplitude, in comparison with the relatively stable daytime conditions. The night-time anomalies are not yet well understood, a number of them being associated with the presence of energetic particles originating from solar proton events 1 . The explanation of others remains obscure.
ISSN:0028-0836
1476-4687
DOI:10.1038/2281080a0