About the new concept of spectral radiometry on RATAN-600
DOI:
10.34898/izcrao-vol119-iss4-pp17-26Abstract
The results of new observations of radio emission from the solar corona in the range 1–3 GHz using RATAN-600 are presented. The difficulties of observations in this range are caused by a large amount of industrial interference (mobile communications, satellite navigation, microwave ovens, aircraft radars, etc.). Problems related to the conversion of magnetic energy into the energy of flares, heating of the corona, the role of narrow-band phenomena, and quasiperiodic pulsations in the solar corona remain relevant as well. The change of the concept of the receiving spectral apparatus for the RATAN-600 radio telescope has become urgent. SAO RAS is working on the creation of a series of next-generation spectral complexes that cover the entire working range of RATAN-600. In this paper, we present the results of the first series of observations with the panoramic spectral radiometric complex in the range of 1–3 GHz for the low-contrast coronal structures study. The implementation of observation modes for various objects has become feasible: from powerful flares to weak structures, down to the level of radio granulation. High-speed instruments for radio signal reception and information processing have been developed and implemented in order to separate useful signals from interference in real-time mode. These parameters, combined with large effective area and wide frequency coverage of RATAN-600, allowed for observations of weak coronal structures in the frequency range of 1–3 GHz. The results of the first series of observations of weak coronal structures and their interpretation in terms of their impact on thermal processes in the corona are discussed.
Keywords:
Sun, radio telescope, observations, spectrum, principal component analysisSupporting Agencies
Работа выполнена в рамках государственного задания САО РАН, утвержденного Министерством науки и высшего образования Российской Федерации.
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Copyright (c) 2023 Владимир Михайлович Богод, Михаил Константинович Лебедев, Нина Евгеньевна Овчинникова, Анатолий Михайлович Рипак, Антон Анатольевич Стороженко, Евгений Анатольевич Курочкин
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The metadata for this submission is licensed under a Creative Commons Attribution 4.0 International License.
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