High-resolution Lyman-alpha filtergrams of the sun

Computer Science – Sound

Scientific paper

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Filtergrams, High Resolution, Lyman Alpha Radiation, Solar Corona, Solar Prominences, Solar Spectra, Stellar Models, Black Brant Sounding Rockets, Cassegrain Optics, Chromosphere, High Temperature Plasmas, Solar Limb, Solar Magnetic Field, Spectroheliographs

Scientific paper

The results of an experiment, conducted jointly by the Lockheed Palo Alto Research Laboratory and the Laboratoire de Physique Stellaire et Planetaire du CNRS, which investigated the transition-region plasma and the geometry of coronal active regions, in relation to models of the high-temperature layers, are presented. A Black Brant rocket was used to obtain 1-arc sec resolution L-alpha pictures of the sun, which revealed small scale features not seen previously at this wavelength, that delineate the geometry of the magnetic field in the chromosphere and in the corona. It is concluded that these observations might provide a new way of observing the upper chromosphere and corona, and that they provide direct evidence of the inhomogeneous character of the chromosphere and of the dominant role of the magnetic field

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