Solar Physics

, Volume 270, Issue 1, pp 175–189 | Cite as

Multilevel Analysis of Oscillation Motions in Active Regions of the Sun

  • V. E. Abramov-MaximovEmail author
  • G. B. Gelfreikh
  • N. I. Kobanov
  • K. Shibasaki
  • S. A. Chupin


The nature of the three-minute and five-minute oscillations observed in sunspots is considered to be an effect of propagation of magnetohydrodynamic (MHD) waves from the photosphere to the solar corona. However, the real modes of these waves and the nature of the filters that result in rather narrow frequency bands of these modes are still far from being generally accepted, in spite of a large amount of observational material obtained in a wide range of wave bands. The significance of this field of research is based on the hope that local seismology can be used to find the structure of the solar atmosphere in magnetic tubes of sunspots. We expect that substantial progress can be achieved by simultaneous observations of the sunspot oscillations in different layers of the solar atmosphere in order to gain information on propagating waves. In this study we used a new method that combines the results of an oscillation study made in optical and radio observations. The optical spectral measurements in photospheric and chromospheric lines of the line-of-sight velocity were carried out at the Sayan Solar Observatory. The radio maps of the Sun were obtained with the Nobeyama Radioheliograph at 1.76 cm. Radio sources associated with the sunspots were analyzed to study the oscillation processes in the chromosphere – corona transition region in the layer with magnetic field B=2000 G. A high level of instability of the oscillations in the optical and radio data was found. We used a wavelet analysis for the spectra. The best similarities of the spectra of oscillations obtained by the two methods were detected in the three-minute oscillations inside the sunspot umbra for the dates when the active regions were situated near the center of the solar disk. A comparison of the wavelet spectra for optical and radio observations showed a time delay of about 50 seconds of the radio results with respect to the optical ones. This implies an MHD wave traveling upward inside the umbral magnetic tube of the sunspot. For the five-minute oscillations the similarity in spectral details could be found only for optical oscillations at the chromospheric level in the umbral region or very close to it. The time delays seem to be similar. Besides three-minute and five-minute ones, oscillations with longer periods (8 and 15 minutes) were detected in optical and radio records. Their nature still requires further observational and theoretical study for even a preliminary discussion.


Oscillations, solar Radio emission, active regions Sunspots, velocity Waves, magnetohydrodynamic 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Beckers, J.M., Schultz, R.B.: 1972, Solar Phys. 27, 61. ADSCrossRefGoogle Scholar
  2. Bhatnagar, A., Livingston, W.C., Harvey, J.W.: 1972, Solar Phys. 27, 80. ADSCrossRefGoogle Scholar
  3. Bloomfield, D.S., McAteer, R.T.J., Mathioudakis, M., Williams, D.R., Keenan, F.P.: 2004, Astrophys. J. 604, 936. ADSCrossRefGoogle Scholar
  4. Bloomfield, D.S., Lagg, A., Solanki, S.K.: 2007, Astrophys. J. 671, 1005. ADSCrossRefGoogle Scholar
  5. Brisken, W.F., Zirin, H.: 1997, Astrophys. J. 478, 814. ADSCrossRefGoogle Scholar
  6. Bogdan, T.J.: 2000, Solar Phys. 192, 373. ADSCrossRefGoogle Scholar
  7. Bogdan, T.J., Judge, P.G.: 2006, Philos. Trans. Roy. Soc. London A 364, 313. ADSCrossRefGoogle Scholar
  8. Brynildsen, N., Maltby, P., Fredvik, T., Kjeldseth-Moe, O.: 2002, Solar Phys. 207, 259. ADSCrossRefGoogle Scholar
  9. Gelfreikh, G.B., Lubyshev, B.I.: 1979, Soviet Astron. 23, 316. ADSGoogle Scholar
  10. Gelfreikh, G.B., Nagovitsyn, Yu.A., Nagovitsyna, E.Yu.: 2006, Publ. Astron. Soc. Japan 58, 29. ADSGoogle Scholar
  11. Gelfreikh, G.B., Grechnev, V.V., Kosugi, T., Shibasaki, K.: 1999, Solar Phys. 185, 177. ADSCrossRefGoogle Scholar
  12. Fludra, A.: 2001, Astron. Astrophys. 368, 639. ADSCrossRefGoogle Scholar
  13. Kobanov, N.I.: 2000, Solar Phys. 196, 120. ADSCrossRefGoogle Scholar
  14. Kobanov, N.I., Makarchik, D.V.: 2003, In: Pevtsov, A.A., Uitenbroek, H. (eds.) Current Theoretical Models and High Resolution Solar Observations: Preparing for ATST CS-286, Astron. Soc. Pac., San Francisco, 251. Google Scholar
  15. Kobanov, N.I., Makarchik, D.V.: 2004a, Astron. Astrophys. 424, 671. ADSCrossRefGoogle Scholar
  16. Kobanov, N.I., Makarchik, D.V.: 2004b, Astron. Rep. 48, 954. ADSCrossRefGoogle Scholar
  17. Kobanov, N.I., Kolobov, D.I., Makarchik, D.V.: 2006, Solar Phys. 238, 231. ADSCrossRefGoogle Scholar
  18. Kobanov, N.I., Kolobov, D.I., Chupin, S.A.: 2008, Astron. Lett. 34, 133. ADSCrossRefGoogle Scholar
  19. Lites, B.W.: 1992, In: Thomas, J.H., Weiss, N.O. (eds.) Sunspots: Theory and Observations, Kluwer, Dordrecht, 261. Google Scholar
  20. Lites, B.W., Thomas, J.H., Bogdan, T.J., Cally, P.S.: 1998, Astrophys. J. 497, 464. ADSCrossRefGoogle Scholar
  21. Nagashima, K., Sekii, T., Kosovichev, A.G., Shibahashi, H., Tsuneta, S., Ichimoto, K., Katsukawa, Y., Lites, B., Nagata, S., Shimizu, T., Shine, R.A., Suematsu, Y., Tarbell, T.D., Title, A.M.: 2007, Publ. Astron. Soc. Japan 59, 631. ADSGoogle Scholar
  22. Nakajima, H., Nishio, M., Enome, S., Shibasaki, K., Takano, T., Hanaoka, Y., Torii, C., Sekiguchi, H., Bushimata, T., Kawashima, S., Shinohara, N., Irimajiri, Y., Koshiishi, H., Kosugi, T., Shiomi, Y., Sawa, M., Kai, K.: 1994, Proc. IEEE 82, 705. ADSCrossRefGoogle Scholar
  23. Nindos, A., Alissandrakis, C.E., Gelfreikh, G.B., Kundu, M.R., Dere, K.P., Korzhavin, A.N., Bogod, V.M.: 1996, Solar Phys. 166, 55. ADSCrossRefGoogle Scholar
  24. Nindos, A., Alissandrakis, C.E., Gelfreikh, G.B., Bogod, V.M., Gontikakis, C.: 2002, Astron. Astrophys. 386, 386. CrossRefGoogle Scholar
  25. Rimmele, T.R.: 1995, Astrophys. J. 445, 511. ADSCrossRefGoogle Scholar
  26. Rouppe van der Voort, L.H.M.: 2003, Astron. Astrophys. 397, 757. ADSCrossRefGoogle Scholar
  27. Shibasaki, K.: 2001a, Astrophys. J. 550, 1113. ADSCrossRefGoogle Scholar
  28. Shibasaki, K.: 2001b, Astrophys. J. 557, 326. ADSCrossRefGoogle Scholar
  29. Staude, J.: 1999, In: Schmieder, B., Hofman, A., Staude, J. (eds.) Advances in Solar Physics Euroconference: Magnetic Fields and Oscillations CS-184, Astron. Soc. Pac., San Francisco, 113. Google Scholar
  30. Torrence, C., Compo, G.P.: 1998, Bull. Am. Meteorol. Soc. 79, 61. ADSCrossRefGoogle Scholar
  31. Torrence, C., Webster, P.J.: 1999, J. Climate 12, 2679. ADSCrossRefGoogle Scholar
  32. Zhugzhda, Y.D., Dzhalilov, N.S.: 1982, Astrophys. J. 112, 16. ADSGoogle Scholar
  33. Zhugzhda, Y.D., Balthasar, H., Staude, J.: 2000, Astrophys. J. 355, 347. ADSGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • V. E. Abramov-Maximov
    • 1
    Email author
  • G. B. Gelfreikh
    • 1
  • N. I. Kobanov
    • 2
  • K. Shibasaki
    • 3
  • S. A. Chupin
    • 2
  1. 1.Central Astronomical Observatory at PulkovoRussian Acad. Sci.St. PetersburgRussia
  2. 2.Institute of Solar-Terrestrial PhysicsIrkutskRussia
  3. 3.Nobeyama Solar Radio ObservatoryMinamisaku, NaganoJapan

Personalised recommendations