Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...192..323p&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 192, no. 1-2, March 1988, p. 323-334.
Astronomy and Astrophysics
Astrophysics
15
Solar Corona, Solar Magnetic Field, Spatial Distribution, Type 3 Bursts, Astronomical Photography, Coronal Loops, Interplanetary Magnetic Fields, Solar Limb, Stereophotography
Scientific paper
The Stereo 5 experiment observed the Sun at 60 and 30 MHz simultaneously on the Earth (Nançay), and on the Soviet spacecraft Mars 7. It recorded many normal type III's and type IIIb's during the period 1974 Jan 10 to 19 at a time when the "stereo" angle Earth-Sun-spacecraft was large enough (≈35°) to allow an accurate triangulation. The time delay Δt of type III bursts between the two observing stations was measured with an uncertainty of ≈0.1 s. A ground interferometer furnished a 2-dimensional position at 75 MHz with an uncertainty of ≈0.1 R_sun;. Combining the two, the authors calculate for the first time the three dimensional positions of type III sources in the corona. Simultaneous observations of the corona in visible light from Skylab allow the apparent radio source positions to be related to slowly evolving coronal structures.
Caroubalos Constantine
Dulk George A.
MacQueen Robert M.
Poquerusse M.
Steinberg Jean-Louis
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