Interferometer observations of a radio burst at 8.6 mm associated with a polarized hard X-ray event
Observations of a radio burst at 5.6 mm wavelength on November 5, 1970 are described with the particular interest on the correspondence between radio and polarized x-ray events. The radio observations were carried out using an interferometer with a half power width of 2.9' at Nagoya University, and indicated that the location of the radio burst coincided with preceding sunspots and the size of the burst source must be very small, less than about 1'. Mechanisms of radio and x-ray emissions are discussed briefly. (auth) Using the observed data for wide-band Type IV solar radio bursts, the onset time differences between the microwave and metric frequencies and the peak flux intensities of the metric component are analyzed as a function of the longitudinal position of the associated flares on the solar disk. It is shown that this time difference is dependent on the position of the associated flare and that the peak flux intensity reaches maximum when a flare occurs in the region 10 to 40 deg west of the central meridian of the solar disk. These results are explained by taking into account the eastward expansion of magnetic botiles which trap mildly relativistic electrons responsible for Type IV bursts. Discussion is given on the relation between these magnetic bottles and shock waves which excite Type II radio bursts.
- Research Organization:
- Nagoya Univ., Japan
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-29-011050
- OSTI ID:
- 4397727
- Journal Information:
- Solar Physics, Journal Name: Solar Physics Journal Issue: 2 Vol. 31; ISSN 0038-0938
- Publisher:
- Springer
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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