Physics
Scientific paper
Jul 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994r%26qe...37..569l&link_type=abstract
Radiophysics and Quantum Electronics, Volume 37, Issue 7, pp.569-574
Physics
Scientific paper
Spectrographic data from observations of the polarized weak steplike (with relatively sharp growth t ˜ 3 sec and slow decay t ˜ 102 sec) solar continuum radioemission are analyzed below. The main results are found using a sweeping spectrograph in the 8 12 GHz frequency range (sweep rate 1 sample per second and frequency resolution 120 MHz) and using the RT-22 radio telescope at the Crimean Astrophysical Observatory (angular resolution 4' 6'). In a series of events at the leading edge of the continuum a narrow-band frequency drifting emission termed “blip-type” is found. The degree of continuum circular polarization (p<10%) is low compared to that of the narrow-band component (p≈20%). Both components of the aforementioned events should be radiating on the second harmonic of the local plasma frequency in the context of a plasma generating mechanism. Based on the model proposed and using the observed degree of circular polarization of each component, we can estimate the strength of the magnetic field within the area of the source and the width of the angular spectrum from the radiating plasma turbulence. The results of analysis of the real microwave events are given below.
Fridman V. M.
Levin B. N.
Sheiner Olga A.
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