Interferometry of Solar Flares at 3-mm Wavelength

INTERFEROMETRY OF SOLAR FLARES AT 3-mm WAVELENGTH

K e y w o r d s : Sim: flares Sun: particle emission Sun: radio radiation

Relative Timing of Solar Flares Observed at Different Wavelengths

The timing of 503 solar flares observed simultaneously in hard X-rays, soft X-rays and Hα is analyzed. We investigated the start and the peak time differences in different wavelengths, as well as the differences between the end of the hard X-ray emission and the maximum of the soft X-ray and Hα emission. In more than 90% of the analyzed events, a thermal preheating seen in soft X-rays is presen...

OBSERVATIONS OF THE 1991 ECLIPSE AT 3.5 mm WAVELENGTH

We report preliminary results of the partial eclipse seen from the BIMA millimeterwavelength interferometer in northern California. The use of an interferometer has many advantages over previous single-dish eclipse observations at 3 mm, and in particular it allows a quite different type of measurement of the height of the "3-mm limb" which is direct and precise : we find it to be 11.9" ± 0.4" a...

Of Sn 1987 a at 12 Mm Wavelength

Observations of the radio remnant of Supernova 1987A using the Australia Telescope Compact Array in the 12-mm band on 2003 July 31 (day 6002.7 after the explosion) give the first fully resolved radio image of the supernova remnant. The diffraction-limited image has a resolution of about 0.45, a factor of two better than that of the 3-cm images previously obtained. There is excellent agreement b...

Global Properties of Solar Flares