Physics
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992soph..142..341a&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 142, no. 2, p. 341-358.
Physics
10
Magnetic Field Configurations, Radio Telescopes, Solar Magnetic Field, Sunspots, Very Large Array (Vla), Siberia, Solar Observatories, Spatial Resolution
Scientific paper
We present 2D solar maps at 5.2 cm computed from 1D observations with the Siberian Solar Radio Telescope (SSRT), using earth rotation aperture synthesis techniques. The resolution attained with the E-W branch of the instrument is 15 by 45 arcsec for a solar declination of about 23 deg. Maps during the period of June 8 to 13, 1988 clearly show the quiet-sun background, sunspot, and plage associated emission as well as compact sources above the neutral line in some active regions. We found that the latter disappear as the gradient of the longitudinal magnetic field decreases. We also detected emission associated with active regions behind the limb, apparently from unresolved loops, extending up to about 40 arcsec. The prospects of the SSRT, as a dedicated solar instrument, are discussed.
Alissandrakis Constantine E.
Kardapolova N. N.
Krissinel' B. B.
Lubyshev B. I.
Miller V. G.
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