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Observations of a flare spray at the solar limb on July 11, 1966 by Y. hman; G. Stiber; U. Kusoffsky is a Physics and Astronomy article available to read on EtoBox.

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A brief description is given of a spectacular flare spray that appeared outside the west solar limb on July 11, 1966. Observations were made at the Swedish Solar Observatory in Anacapri with (a) a 0.7/~ Ha filter combined with the flare patrol instrument, and with a 5 • Ha filter attached to the 8 cm coronagraph, (b) in white light and with a polarization measuring device attached to the 12 cm coronagraph, (c) in the helium Da and Ha spectrum regions with the 20 cm solar telescope and a Babcock grating in fourth order. During the brilliant phase the intensity of the object measured with the 0.7/~ Ha filter was 1.6 times that of the undisturbed solar surface near the centre of the disk. The object could be faintly traced even in white light outside the solar image when projected on a screen. The brilliant area had an apparent size of about 30 square degrees of the solar surface. When classified as a flare it should probably be given the importance 4n therefore. Already a preliminary examination of the exposures secured by one of us (Stiber) for the purpose of measuring polarization, gives clear evidence of strong effects of radial polarization (vibration tangential to the limb) sugg

Who reads Observations of a flare spray at the solar limb on July 11, 1966?

Author

Y. hman; G. Stiber; U. Kusoffsky

Publisher

Springer; Springer-Verlag; Kluwer Academic Publishers; Springer Science and Business Media LLC (ISSN 0038-0938)

Published

1967

Language

EN

Field

Physics and Astronomy (Physical Sciences)