Abstract
The phenomenon of long-period sunspot oscillations with periods from several tens to a thousand minutes is studied using data on the magnetic field strength and sunspot coordinates obtained based on the SOHO MDI data. It has been indicated that oscillations of the sunspot magnetic field strength are related to relative and absolute horizontal oscillation modes, as a result of which certain limitations are imposed on the interpretation of the phenomenon.
Similar content being viewed by others
References
Chorley, N., Hnat, B., Nakariakov, V.M., Inglis, A.R., and Bakunina, I.A., Long Period Oscillations in Sunspots, Astron. Astrophys., 2010, vol. 513, pp. 27–34.
Demchenko, B.I., Minasyants, G.S., Makarenko, N.G., and Obashev, S.O., On the Possible Oscillation of Sunspot, Astron. Tsirk., 1985, no. 1360/JAN21.
Efremov, V.I., Parfinenko, L.D., and Solov’ev, A.A., Investigation of Long-Period Oscillations of Sunspots with Ground-Based (Pulkovo) and SOHO/MDI Data, Sol. Phys., 2010, vol. 267, no. 2, pp. 279–293.
Gopasyuk, S.I., On the Possible Existence of Torsional Oscillations with a Period Close to 40 min in Sunspots, Izv. Krym. Astrofiz. Obs., 1985, vol. 73, pp. 9–15.
Nagovitsyn, Yu.A. and Nagovitsyna, E.Yu., Quasiperiodic Sunspot Oscillations on Timescales of Several Tens of Minutes and Hundreds of Hours, Trudy 10-i Pulkovskoi konferentsii po fizike Solntsa (Proc. 10th Pulkovo Conference on Solar Physics), St. Petersburg, 2006, pp. 73–104.
Nagovitsyn, Yu.A. and Nagovitsyna, E.Yu., Trudy 13-i Pulkovskoi konferentsii po fizike Solntsa (Proc. 13th Pulkovo Conference on Solar Physics), St. Petersburg, 2009, pp. 319–324.
Nagovitsyn, Yu.A. and Nagovitsyna, E.Yu., Long-Period Oscillation Processes in Sunspot Groups (Ground-Based and Exoatmospheric Observations), Geomagn. Aeron. (Engl. transl.), 2011, vol. 51, pp. 1049–1053.
Nagovitsyna, E.Yu., Studying Quasiperiodic Motions of Sunspots and Horizontal Solar Field Singularities, Using Increased-Accuracy Coordinate Methods, Cand. Sci. (Phys.-Math.) Dissertation, Leningrad, 1990, p. 14.
Nagovitsyna, E.Yu. and Nagovitsyn, Yu.A., Oscillations of Flux Tube Bundles and the Structure of Sunspot Magnetic Fields, Astron. Lett., 2001, vol. 27, no. 2, pp. 118–123.
Nagovitsyna, E.Yu. and Nagovitsyn, Yu.A., Spatial Variations in Parameters of Quasi-Hourly Sunspot Fragment Oscillations and a Singular Penumbra Oscillator, Astron. Lett., 2002, vol. 28, no. 2, pp. 121–129.
Solov’ev, A.A. and Kirichek, E.A., Astrofiz. Byull., 2008, vol. 63, pp. 180–192.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Nagovitsyn, Y.A., Rybak, A.L. & Nagovitsyna, E.Y. Magnetic field variations and spatial configurations of long-period sunspot oscillations according to the SOHO data. Geomagn. Aeron. 52, 902–907 (2012). https://doi.org/10.1134/S0016793212070171
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0016793212070171