Localization of the source of flare X-ray emission during the eclipse of 7 March, 1970 |
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Authors: | R. W. Kreplin R. G. Taylor |
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Affiliation: | (1) E. O. Hulburt Center for Space Research Naval Research Laboratory, 20390 Washington, D.C, U.S.A. |
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Abstract: | An occultation of X-ray emission from a solar flare occurred during the eclipse of 7 March, 1970 and was observed by an NRL instrument aboard the OSO-5 satellite. Ionization chamber photometers covering the wavelength ranges 0.5–3 Å, 1–8 Å, and 8–16 Å provided flux measurements once every 15 s providing a spatial resolution of 20 arc sec at the solar surface. Within this limitation the X-ray flare was observed to be confined within a region 136 000 km in one dimension.However, the measurements indicate the existence of a denser core 54 000 km wide in the direction of advance of the Moon's limb. Comparison of these results with X-ray photographs of flare regions are made and a model for the development of the soft X-ray flare is proposed. |
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