Gamma-ray observational constraints on the origin of the optical continuum emission from the white-light flare of 1980 July 1

Details Gamma-ray observational constraints on the origin of the optical continuum emission from the white-light flare of 1980 July 1 Gamma-ray observational constraints on the origin of the optical continuum emission from the white-light flare of 1980 July 1

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...272l..61r&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 272, Sept. 15, 1983, p. L61-L65. Sponsorship: Bunde

Astronomy and Astrophysics

Astrophysics

17

Gamma Ray Spectra, Solar Flares, Solar Spectra, Sunlight, Continuous Spectra, Light Curve, Particle Precipitation, Solar Corpuscular Radiation, Solar Maximum Mission, Solar X-Rays

Scientific paper

Results are presented for the flare of July 1, 1980, which started at approximately 1627 UT and in which simultaneous measurements were made of X-ray, gamma-ray, and optical continuum emission for the entire duration of the flare. The X-ray and gamma-ray observations were made by the Gamma-Ray Spectrometer on the Solar Maximum Mission satellite. The optical measurements were taken at the Sacramento Peak Observatory and the Big Bear Solar Observatory (Zirin and Neidig, 1981). It is found that the major white-light emission that occurs in the late phase of the flare could not have been due to heating by electron or ion precipitation. This conclusion derives from the fact that the X-ray and gamma-ray flux peaks approximately 1 minute before the maximum of the optical continuum mission emission. It is also found that approximately 73 percent of the optical continuum emission, representing a spatially and temporally distinct bright point, follows this maximum with little or no X-ray or gamma-ray emission in the same period.

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