Abstract:Type III solar noise bursts have been observed in the frequency range 25-100 kHz with the VLF detector on OGO 3. The bursts decrease in frequency from 100 kHz (the highest frequency of observation) to as low as 25 kHz in approximately 45 min. The intensity at 100 kHz increases for about 20 min then decays over a period of approximately 1 h. The variation of the intensity with time becomes less regular at lower frequencies. Observed maximum intensities near 80 kHz range from 3 • 10 -I8 to 2 • 10 -16 W m -~ Hz -… Show more
“…On hectometric wavelengths, type-Ill burst storms have been observed (78), in association with metric and decametric activity (79). These observations were extended down to 30 KHz (80) (81). Physical conditions and evidence for spiral structure were deduced (82).…”
Section: Type-ill Bursts and Type U Burstsmentioning
“…On hectometric wavelengths, type-Ill burst storms have been observed (78), in association with metric and decametric activity (79). These observations were extended down to 30 KHz (80) (81). Physical conditions and evidence for spiral structure were deduced (82).…”
Section: Type-ill Bursts and Type U Burstsmentioning
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