Ten-antenna prototype of a radio heliograph based on the Siberian Solar Radio Telescope |
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| Authors: | S V Lesovoy A T Altyntsev V G Zandanov E F Ivanov A V Gubin A I Maslov |
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| Institution: | (1) Institute of Solar-Terrestrial Physics, P.O. Box 4026, Lermontov Street 126, Irkutsk, 664033, Russia |
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| Abstract: | An upgrade of the Siberian Solar Radio Telescope (SSRT) Smolkov et al., 1986; Grechnev et al., 2003] to a multiwave radio
heliograph has been started. The radio heliograph being created will be designed mainly to measure coronal magnetic fields,
to determine the locations of solar-flare energy release, and to investigate coronal mass ejections. These tasks define the
parameters of next-generation radio heliographs. A high spatial resolution, a high image acquisition rate, and a high sensitivity
are required simultaneously. All these parameters should be realized in the widest possible frequency range—from fractions
to tens of GHz). The expected parameters of the future SSRT-based radio heliograph are listed below: spatial resolution 12″–24″,
temporal resolution 0.02–1.0 s, frequency range 4–8 GHz, sensitivity up to 100 K, left-hand and right-hand circular polarizations,
data rate 0.5–20 Mb s−1 (normal and flare modes). In this paper, we describe the broadband antennas, analog optical data transmission lines, and
correlator used in the 10-antenna radio heliograph prototype. |
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