Sub-second pulsations simultaneously observed at microwaves and hard X-rays in a solar burst

Astronomy and Astrophysics – Astronomy

Scientific paper

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Microwave Emission, Millimeter Waves, Radio Astronomy, Solar Radio Bursts, Solar X-Rays, Cross Correlation, High Resolution, Magnetohydrodynamic Waves, Satellite-Borne Instruments, Sensitivity, Solar Flares

Scientific paper

Coordinated observations of solar bursts in November 1981 with a high time resolution of a few milliseconds were planned. The hard X-rays (30 to 40 keV) were observed with hard X-ray monitor (HXM) aboard the Hinotori Satellite with a time resolution of 7.81 ms and the radio emissions were observed on the ground with 45 ft dish at Itapetinga Radio Observatory with a high time resolution (1 ms) and high sensitivities at 22 GHz and 44 GHz, supplemented by a patrol observation at 7 GHz with time resolution of 100 ms. The pulsations repeated with a period of about 300 ms. The physical implication of the good correlation is not clear at this stage, but it may give a clue to the understanding of the high energy phenomena occurring during the solar flares.

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