Journal article
Short duration solar microwave bursts and associated soft X-ray emission
Solar physics, Vol.37(1), pp.189-203
07/1974
DOI: 10.1007/BF00157856
Abstract
During the time period of November 1968 to March 1970, 259 15.4 GHz impulsive microwave bursts have been identified of which 147 had associated 2-12 Å soft X-ray bursts. Average durations, rise times, and decay times for the microwave bursts are 2.9 ± 2.4 min, 0.9 ± 0.8 min, and 2.2 ± 2.1 min, respectively. Total durations and decay times for the X-ray events display a wide range of values from a few minutes to several hours. Rise times for 50 % of the events fell in the range of 2 to 7 min. A significant fraction (32 %) of the X-ray events may exhibit a flux enhancement prior to the main outburst. For 85 % of the flare cases, the X-ray event begins simultaneously with or before the microwave event. In 91 % of the cases the X-ray event peaks later than the microwave event. The average delay is 3.0 ± 1.9 min with 50 % of cases in the range of 0 to 4 min. The X-ray flux increases are significantly correlated with the microwave flux, increases, having a correlation coefficient of 0.43 (> 99.9 % confident). © 1974 D. Reidel Publishing Company.
Details
- Title: Subtitle
- Short duration solar microwave bursts and associated soft X-ray emission
- Creators
- Steven R Spangler - University of IowaStanley D Shawhan - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Solar physics, Vol.37(1), pp.189-203
- DOI
- 10.1007/BF00157856
- ISSN
- 0038-0938
- eISSN
- 1573-093X
- Language
- English
- Date published
- 07/1974
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199756902771
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