Trofimova, E. A.
Zinchenko, I. I.
Zemlyanukha, P. M.
Thomasson, M.
Article History
Received: 6 August 2019
Revised: 22 November 2019
Accepted: 22 November 2019
First Online: 31 March 2020
ACKNOWLEDGMENTS
: Authors thank for support from Onsala Space Observatory (Sweden) in providing its equipment and supporting observations and to the critic for helpful comments.
: This work was supported by the RFBR grant no. 18-02-00660, and also partly within the IAP RAS state program 0035-2019-0005. National research infrastructure of Onsala Space Observatory is funded by grant of Sweden research council no. 2017-00648.