Abstract
Based on the measurements of their magnetic fields, solar prominences can be divided into two types: filaments with normal (N) or inverse (I) polarity. In an N-type prominence, the magnetic polarity is the same as in the underlying photosphere, while the opposite polarity occurs in an I-type prominence. This paper continues to develop the method to calculate the pressure, density, and temperature of any given magnetic structure of the configuration. We model the dense and cool prominence with a helical structure of magnetic field. The magnetic configuration under study is introduced in a hydrostatic solar atmosphere given by the model considered by Avrett and Loezer (2008). The presented analytical model describes both the normal-polarity prominences and prominences with inverse polarity.
Similar content being viewed by others
REFERENCES
Avrett, E.H. and Loeser, R., Models of the solar chromosphere and transition region from SUMER and HRTS observations: Formation of the extreme-ultraviolet spectrum of hydrogen, carbon, and oxygen, Astrophys. J. Suppl., Ser., 2008, vol. 175, pp. 229–276.
Kippenhahn, R. and Schlüter, A., Eine Theorie der solaren Filamente, Z. Astrophys., 1957, vol. 43, pp. 36–62.
Kolotkov, D.Y., Nisticò, G., and Nakariakov, V.M., Transverse oscillations and stability of prominences in a magnetic field dip, Astron. Astrophys., 2016, vol. 590, id A120.
Kuperus, M. and Raadu, M.A., The support of prominences formed in neutral sheets, Astron. Astrophys., 1974, vol. 31, pp. 189–193.
Leroy, J.L., Bommier, V., and Sahal-Brechot, S., New data on the magnetic structure of quiescent prominences, Astron. Astrophys., 1984, vol. 131, pp. 33–44.
Low, B.C., Nonisothermal magnetostatic equilibria in a uniform gravity field. I. Mathematical formulation, Astrophys. J., 1975, vol. 197, pp. 251–255.
Malherbe, J.M. and Priest, E.R., Current sheet model for solar prominences, Astron. Astrophys., 1983, vol. 123, pp. 80–88.
Solov’ev, A.A., The structure of solar filaments. Prominences in the corona free from external magnetic field, Astron. Rep., 2010, vol. 54, no. 1, pp. 86–95.
Zaitsev, V.V. and Stepanov, A.V., Prominence activation by increase in electric current, J. Atmos. Sol.-Terr. Phys., 2018, vol. 179, pp. 149–153.
Funding
The work was supported by Program KP 19-270 of the Presidium of Russian Academy of Sciences, the Russian Foundation for Basic Research, project no. 18-02-00168, and the Russian Science Foundation, project no. 15-12-20001.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
The authors declare no conflict of interest.
Additional information
Translated by N. Semenova
Rights and permissions
About this article
Cite this article
Korolkova, O.A., Solov’ev, A.A. Structure of Prominences with Normal and Inverse Polarities. Geomagn. Aeron. 59, 858–863 (2019). https://doi.org/10.1134/S0016793219070193
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0016793219070193