Abstract
The geometric parameters and relationships of the horizontal and vertical velocities in a giant convective cylindrical cell were analyzed based on a continuity equation with the given vertical distribution of unperturbed gas density in the convective zone of the Sun. It has been found that the lower edge of such a convective cell must be positioned at a depth of 20 Mm in the secondary helium ionization zone. In addition, under the assumption that the plasma conductivity in the convective zone is caused by small-scale turbulence, a new stationary solution was obtained for the problem of magnetic field diffusion in the pattern of slow conductive plasma flows in scales of a convective cell.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Beck, J., Duvall, T.L., and Scherer, P.H., Long-lived giants cells detected at the surface of the Sun, Nature, 1998, vol. 394, no. 6696, pp. 653–655.
Efremov, V.I., Parfinenko, L.D., and Solov’ev, A.A., Identification of large-scale cellular structures on the Sun based on the SDO and PSPT data, Astrophys. Space Sci., 2015, vol. 356, pp. 1–6.
Featherstone, N., Haber, D.A., Hindman, B.W., and Toomre, J., Helioseismic probing of giant-cell convection, Bull. Am. Astron. Soc., 2008, vol. 38, p. 257.
Hathaway, D.H., Upton, L., and Colegrove, O., Giant convection cells found on the Sun, Science, 2013, vol. 342, pp. 1217–1219.
Hathaway, D.H., Gilman, P.A., Harvey, J.W., et al., The GONG observations of solar surface flows, Science, 1996, vol. 272, pp. 1306–1309.
Hindman, B.W., Gizon, L., Duvall, T.L., Jr., Haber, D.A., and Toomre, J., Comparison of solar subsurface flows assessed by ring and time-distance analyses, Astrophys. J., 2004, vol. 613, pp. 1253–1262.
Hindman, B.W., Haber, D.A., and Toomre, J., Helioseismically determined near-surface flows underlying a quiescent filament, Astrophys. J., 2006, vol. 653, pp. 725–732.
Kitchatinov, L.L. and Rüdiger, G., Diamagnetic pumping near the base of a stellar convection zone, Astron. Nachr., 2008, vol. 329, pp. 372–375.
Miesch, M.S., Brun, A.S., De Rosa, M.L., and Toomre, J., Structure and evolution of giant cells in global models of solar convection, Bull. Am. Astron. Soc., 2007, vol. 39, p. 127.
Miesch, M.S., Large-scale dynamics of the convection zone and tachocline, Living Rev. Sol. Phys., 2005, vol. 2, no. 1, pp. 5–139.
Nordlund, A., Stein, R.F., and Asplund, M., Solar surface convection, Living Rev. Sol. Phys., 2009, vol. 6, no. 2, pp. 7–92.
Schou, J., Scherrer, P.H., Bush, R.I., Wachter, R., Couvidat, S., Rabello-Soares, M.C., et al., Design and ground calibration of the Helioseismic and Magnetic Imager (HMI) instrument on the Solar Dynamics Observatory (SDO), Sol. Phys., 2012, vol. 275, pp. 229–259.
Stix, M., The Sun: An Introduction, Astronomy and Astrophysics Library, Berlin/New York, Springer, 2004.
Ustyugov, S.D., Realistic magnetohydrodynamical simulation of solar local supergranulatio, Astron. Soc. Pac. ASP Conference, 2012, vol. 454, pp. 73–76.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Solov’ev, A.A., Efremov, V.I., Parfinenko, L.D. et al. Large convective cells in the sun: a theoretical model. Geomagn. Aeron. 55, 1054–1059 (2015). https://doi.org/10.1134/S0016793215080277
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0016793215080277