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http://nopr.niscpr.res.in/handle/123456789/25874| Title: | A theoretical explanation of intensities of storm-time VLF hiss emissions observed at low latitudes |
| Authors: | Prakash, Ram Agrawal, Bal Mukund Singh, A P |
| Issue Date: | Jun-2001 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | For known plasma parameters and considering quasi-linear electron cyclotron resonance instability and incoherent Cerenkov radiation process, the intensities of intense storm-time VLF hiss emissions, observed in the low latitude ground stations of Japan, are explained. Based on the intensity calculations in low latitude equatorial plane, which are inconsistent with the observed intensities, the local generations by either of the above two mechanisms are ruled out. It is suggested that the emissions are due to mechanism of quasi-linear electron cyclotron resonance instability in the equatorial plane at L≃ 3.6 by -5 keV electrons which drift eastward from higher latitudes and enter the ionosphere at a latitude higher than that of Moshiri (L ≃1.6). These then propagate towards the observer in earth-ionosphere wave-guide mode. |
| Page(s): | 121-126 |
| ISSN: | 0975-105X (Online); 0367-8393 (Print) |
| Appears in Collections: | IJRSP Vol.30(3) [June 2001] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJRSP 30(3) 121-126.pdf | 1.28 MB | Adobe PDF | View/Open |
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