Volume 4 Issue 3
Aug.  1984
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Xiao Zuo, Zhang Shu-li, Zuo Ji-ching. A Kind of Short Wave Band SID Records and Its Application in the Observation and Study of Solar X-ray Flares[J]. Journal of Space Science, 1984, 4(3): 191-197. doi: 10.11728/cjss1984.03.191
Citation: Xiao Zuo, Zhang Shu-li, Zuo Ji-ching. A Kind of Short Wave Band SID Records and Its Application in the Observation and Study of Solar X-ray Flares[J]. Journal of Space Science, 1984, 4(3): 191-197. doi: 10.11728/cjss1984.03.191

A Kind of Short Wave Band SID Records and Its Application in the Observation and Study of Solar X-ray Flares

doi: 10.11728/cjss1984.03.191
  • Received Date: 1983-07-15
  • Rev Recd Date: 1900-01-01
  • Publish Date: 1984-08-24
  • Solar flares with enhanced X-ray emissions usually produce excess ionizations in the ionosphere and cause what generally known as sudden ionospheric disturbances (SID). It has long been established that much of information on the X-ray emission can be based on the observation of SID's. In recent 20 years, although direct observations of the X-ray radiation by satellites have made quantitative data available, SIDmeasurements are still a useful tool, because the method iscomparatively simple, easy to give a quick and continuous patrol.In this paper a sweep frequency device was described for the continuous monitoring of SID's. Emphasis was put to the application of the records in solar X-ray 'flare studies. Analysis of the data from 1982-1983 showed that the method is sensitive to solar flare with X-ray enhancement. Its records of SID's are in very good agreement with those reported by some other stations in the world with different methods except a few small sized disturbances. This shows a reliability of the data. Furthermore, most of the solar soft X-ray (1-8 À) events with a peak flux larger than about 10-3 erg·cm-2·sec-1, can be recognized from the records. The possibility of quantitative study of solar X-ray flux and its time curves with this kind of data were briefly discussed.

     

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