Simultaneous Hard X-ray, Soft X-ray, Millimeter and Microwave Observations of a Solar Flare

Details Simultaneous Hard X-ray, Soft X-ray, Millimeter and Microwave Observations of a Solar Flare Simultaneous Hard X-ray, Soft X-ray, Millimeter and Microwave Observations of a Solar Flare

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aas...180.4504w&link_type=abstract

American Astronomical Society, 180th AAS Meeting, #45.04; Bulletin of the American Astronomical Society, Vol. 24, p.802

Astronomy and Astrophysics

Astronomy

Scientific paper

We present non-imaging data across a wide range of wavelengths for a solar flare which occurred on 1991 June 13. This flare is of interest because it shows a spike in hard X-rays at the beginning of the event which had a relatively hard X-ray spectrum, and was followed by a much softer impulsive phase. We present the BATSE and OSSE observations (from the Gamma Ray Observatory): the former have good time resolution, while the latter provide well-resolved spectral information. These are contrasted with the GOES soft-X-ray data on the hot thermal component in the corona, and radio observations up to 86 GHz which are sensitive to both the nonthermal and thermal components of the flare. The 86 GHz data from the BIMA millimeter interferometer show a spike in the impulsive phase coincident with the hard X-ray spike above 100 keV, as well as a long-duration thermal phase which appears to be consistent with an origin in the same material seen by GOES. We discuss the implications of the observations for particle acceleration in this flare.

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