Advertisement

Astrophysics

, Volume 60, Issue 3, pp 401–407 | Cite as

Physical Processes in the “Feet” of Solar Prominences

  • M. Sikharulidze
  • R. Chigladze
  • D. Khutsishvili
  • T. Kvernadze
  • E. Khutshishvili
  • V. Kakhiani
  • G. Kurkhuli
Article
  • 16 Downloads

Spectrograms of hydrogen Hα and helium D3 were obtained with a large non-eclipsing coronagraph on November 21, 2012 and July 20, 2015 for a study of the velocities of the plasma in prominences at the Abastumani Astrophysical Observatory. An analysis of this data yielded the following major results: an asymmetry is observed in the time variations in the Doppler velocities and half widths of the Hα prominences. This asymmetry appears in roughly 40% of the 227 spectrograms that were studied. This kind of asymmetry is observed in 70% of the 320 D3 spectrograms that were studied. In the “feet” of the Hα prominences, the Doppler velocities vary over a range of approximately -9 to -15 km/s, and in the “feet” of the D3 prominences, from -8 to -18 km/s. For the Hα prominences the period of the oscillations in the velocity varies over 3-5 min and the period of the oscillations in the half width ranges from 5 to 12 min. For the D3 prominences the period of the oscillations in the Doppler velocities varies over 7-10 min, and the period of the oscillations in the half width ranges from 5-10 min.

Keywords

sun: prominences: “feet” of prominences 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    V. Gaizauskas, IAU Coll. 167, 150, 257 (1998).ADSGoogle Scholar
  2. 2.
    N. Labrosse, P. Heinzel, and J. C. Vial, Space Sci. Rev. 151, 243 (2010).ADSCrossRefGoogle Scholar
  3. 3.
    D. H. Mackay, J. T. Karpen, Ballester, et al., Space Sci. Rev. 151, 333 (2010).Google Scholar
  4. 4.
    S. F. Martin, R. Bilimoria, and P. W. Tracadas, in Solar Surface Magnetism, R. J. Rutten and C. J. Schrijver, eds., Acad. Publ., Dordrecht 303 (1994).Google Scholar
  5. 5.
    W. H. Press, S. A. Teukolsky, W. T. Vetterling, et al., Numerical Recipes, Cambridge University Press, Cambridge (1992).MATHGoogle Scholar
  6. 6.
    E. Tandberg-Hanssen, Astrophys. Space Sci. Lib. 199 (1995).Google Scholar
  7. 7.
    S. Gunár, P. Mein, B. Schmieder, et al., Astron. Astrophys. 543 (2012).Google Scholar
  8. 8.
    F. C. Drago, C. E. Alissandrakis, T. Bastian, et al., Sol. Phys. 199, 115 (2001).ADSCrossRefGoogle Scholar
  9. 9.
    Y. Hanaoka, et al., PASJ 46, 205 (1994).ADSGoogle Scholar
  10. 10.
    N. Labrosse and P. Gouttebroze, Astron. Astrophys, 380, 323 (2001).ADSCrossRefGoogle Scholar
  11. 11.
    S. Parenti, J.-C. Vial, and P. Lemaire, Astron. Astrophys. 443, 679 (2005).ADSCrossRefGoogle Scholar
  12. 12.
    M. J. Penn, J. Arnaud, D. L. Mickey, et al., Astrophys. J, 436, 368 (1994).ADSCrossRefGoogle Scholar
  13. 13.
    E. J. Schmahl, P. V. Foukal, R. W. Noyes, et al., Sol. Phys. 39, 337 (1974).ADSCrossRefGoogle Scholar
  14. 14.
    G. Stellmacher, E. Wiehr, and I. E. Dammasch, Sol. Phys. 217, 133 (2003).ADSCrossRefGoogle Scholar
  15. 15.
    D. Banerjee, R. Erdélyi, R. Oliver, et al., Sol. Phys. 246, 3 (2007).ADSCrossRefGoogle Scholar
  16. 16.
    M. Zapiór, P. Kotrc, P. Rudawy, et al., Sol. Phys. 290, 1659 (2015).CrossRefGoogle Scholar
  17. 17.
    R. Oliver and J. L. Ballester, Sol. Phys. 206, 45 (2002).ADSCrossRefGoogle Scholar
  18. 18.
    A. Costa, R. González, and A. C. Sicardi Schifino, Astron. Astrophys. 427, 353 (2004).ADSCrossRefGoogle Scholar
  19. 19.
    I. Arregui and J. Ballester, Space Sci. Rev. 158, 169 (2011).ADSCrossRefGoogle Scholar
  20. 20.
    A. J. Díaz, R. Oliver, and J. L. Ballester, Astron. Astrophys. 440, 1167 (2005).ADSCrossRefGoogle Scholar
  21. 21.
    Lin Cheng-Horng, Geophys. Res. Lett. 31, L13601 (2004).ADSCrossRefGoogle Scholar
  22. 22.
    Yi. Zhang and O. Engvold, Sol. Phys. 134, 275 (1991).ADSCrossRefGoogle Scholar
  23. 23.
    A. J. Díaz, R. Oliver, R. Erdélyi, et al., Astron. Astrophys. 379, 1083 (2001).CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2017

Authors and Affiliations

  • M. Sikharulidze
    • 1
  • R. Chigladze
    • 1
  • D. Khutsishvili
    • 1
    • 2
  • T. Kvernadze
    • 1
  • E. Khutshishvili
    • 1
  • V. Kakhiani
    • 1
  • G. Kurkhuli
    • 1
  1. 1.Abastumani Astrophysical ObservatoryIlia State UniversityTbilisiGeorgia
  2. 2.Ivane Dzhavikhishvili Tbilisi State UniversityTbilisiGeorgia

Personalised recommendations