Results of Solar Research Based on Observations of Solar Eclipses at the IAA RAS radio Telescopes for the Period 1999–2022
Transactions of IAA RAS, issue 65, 7–22 (2023)
DOI: 10.32876/ApplAstron.65.7-22
Keywords: radio telescope, solar eclipse, radio image, active region, corona, radio emission
About the paper Full textAbstract
Initially, the Quasar VLBI Network of the IAA RAS was intended to solve some tasks in the field of space geodesy. However, its technical characteristics turned out to be very suitable for conducting studies of the microwave emission of the Sun using observations of solar eclipses. They have been conducted at the IAA RAS radio telescopes for two 11-year cycles of solar activity (1999–2022) already. The objective of this work was to generalize the results obtained in order to determine the possibilities and prospects for further development of solar research at the IAA RAS. The article presents an overview of all 9 eclipse observations made. A brief description of the used method of observations and their processing is given as well as the technical characteristics of the receiving equipment and the registration system. The method used is considered the best in terms of the accuracy of coordinate measurements, which makes it possible to reach the maximum allowable diffraction value of ~ 3 arcsec. The main results of the observations concerning the fine spatial structure and spectral-polarization characteristics of individual local details of radiation sources (sunspots, interspot radiation, radiogranulation, prominences) are presented. The effective brightness temperature of the Sun and its radio radius are measured. Analysis of the results showed that with the development of the instrumental base, the quality of the results obtained was constantly increasing and it is currently at a good modern level. To further improve the quality and effectiveness of studies, it is recommended to supplement them with longer, non-eclipsing observations of the Sun using new techniques, choosing the moments when the instruments are not involved in performing the main navigational tasks.
Citation
D. V. Ivanov, I. A. Rakhimov, A. A. Diakov, V. G. Olifirov, G. N. Ilin, N. G. Peterova, N. A. Topchilo, A. V. Ipatov, T. S. Andreeva, E. Yu. Khvostov, V. Yu. Bykov. Results of Solar Research Based on Observations of Solar Eclipses at the IAA RAS radio Telescopes for the Period 1999–2022 // Transactions of IAA RAS. — 2023. — Issue 65. — P. 7–22.
@article{ivanov2023,
abstract = {Initially, the Quasar VLBI Network of the IAA RAS was intended to solve some tasks in the field of space geodesy. However, its technical characteristics turned out to be very suitable for conducting studies of the microwave emission of the Sun using observations of solar eclipses. They have been conducted at the IAA RAS radio telescopes for two 11-year cycles of solar activity (1999–2022) already. The objective of this work was to generalize the results obtained in order to determine the possibilities and prospects for further development of solar research at the IAA RAS.
The article presents an overview of all 9 eclipse observations made. A brief description of the used method of observations and their processing is given as well as the technical characteristics of the receiving equipment and the registration system. The method used is considered the best in terms of the accuracy of coordinate measurements, which makes it possible to reach the maximum allowable diffraction value of ~ 3 arcsec.
The main results of the observations concerning the fine spatial structure and spectral-polarization characteristics of individual local details of radiation sources (sunspots, interspot radiation, radiogranulation, prominences) are presented. The effective brightness temperature of the Sun and its radio radius are measured. Analysis of the results showed that with the development of the instrumental base, the quality of the results obtained was constantly increasing and it is currently at a good modern level. To further improve the quality and effectiveness of studies, it is recommended to supplement them with longer, non-eclipsing observations of the Sun using new techniques, choosing the moments when the instruments are not involved in performing the main navigational tasks.},
author = {D.~V. Ivanov and I.~A. Rakhimov and A.~A. Diakov and V.~G. Olifirov and G.~N. Ilin and N.~G. Peterova and N.~A. Topchilo and A.~V. Ipatov and T.~S. Andreeva and E.~Yu. Khvostov and V.~Yu. Bykov},
doi = {10.32876/ApplAstron.65.7-22},
issue = {65},
journal = {Transactions of IAA RAS},
keyword = {radio telescope, solar eclipse, radio image, active region, corona, radio emission},
pages = {7--22},
title = {Results of Solar Research Based on Observations of Solar Eclipses at the IAA RAS radio Telescopes for the Period 1999–2022},
url = {http://iaaras.ru/en/library/paper/2154/},
year = {2023}
}
TY - JOUR
TI - Results of Solar Research Based on Observations of Solar Eclipses at the IAA RAS radio Telescopes for the Period 1999–2022
AU - Ivanov, D. V.
AU - Rakhimov, I. A.
AU - Diakov, A. A.
AU - Olifirov, V. G.
AU - Ilin, G. N.
AU - Peterova, N. G.
AU - Topchilo, N. A.
AU - Ipatov, A. V.
AU - Andreeva, T. S.
AU - Khvostov, E. Yu.
AU - Bykov, V. Yu.
PY - 2023
T2 - Transactions of IAA RAS
IS - 65
SP - 7
AB - Initially, the Quasar VLBI Network of the IAA RAS was intended to
solve some tasks in the field of space geodesy. However, its
technical characteristics turned out to be very suitable for
conducting studies of the microwave emission of the Sun using
observations of solar eclipses. They have been conducted at the IAA
RAS radio telescopes for two 11-year cycles of solar activity
(1999–2022) already. The objective of this work was to generalize the
results obtained in order to determine the possibilities and
prospects for further development of solar research at the IAA RAS.
The article presents an overview of all 9 eclipse observations made.
A brief description of the used method of observations and their
processing is given as well as the technical characteristics of the
receiving equipment and the registration system. The method used is
considered the best in terms of the accuracy of coordinate
measurements, which makes it possible to reach the maximum allowable
diffraction value of ~ 3 arcsec. The main results of the
observations concerning the fine spatial structure and spectral-
polarization characteristics of individual local details of radiation
sources (sunspots, interspot radiation, radiogranulation,
prominences) are presented. The effective brightness temperature of
the Sun and its radio radius are measured. Analysis of the results
showed that with the development of the instrumental base, the
quality of the results obtained was constantly increasing and it is
currently at a good modern level. To further improve the quality and
effectiveness of studies, it is recommended to supplement them with
longer, non-eclipsing observations of the Sun using new techniques,
choosing the moments when the instruments are not involved in
performing the main navigational tasks.
DO - 10.32876/ApplAstron.65.7-22
UR - http://iaaras.ru/en/library/paper/2154/
ER -