Abstract
The article studies the physical mechanism of the generation of a steady stream of weak shock waves at the photospheric level during the epoch of the solar-activity cycle minimum. The distribution of altitude thermodynamic parameters within the solar chromosphere are calculated with the relaxation method. A nonlinear increase in wave-flow power in the lower layers of the solar atmosphere has been determined in the epoch of increased cycle activity. The physical mechanism of radiative heating of the solar atmosphere is studied at the stage of increased cycle activity.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
Appenzeller, I. and Schroter, E.H., A statistical analysis of large-scale brightness and velocity fluctuations in the solar atmosphere, Sol. Phys., 1968, vol. 4, pp. 131–141.
Bierman, L.Z., Inhomogeneous stellar atmosphere models, Naturwissenschaften, 1946, vol. 33, p. 118.
Christensen-Dalsgaard, J., Däppen, W., Ajukov, S.V., et al., The current state of solar modeling, Science, 1996, vol. 272, pp. 1286.–1292.
Chuideri, C. and Giovanardi, C., Acoustic waves in the lower solar atmosphere, Sol. Phys., 1975, vol. 41, pp. 35–42.
Kjeldseth-Moe, O., Book review—The Solar Transition Region by Mariska, J.T., Sol. Phys., 1994, vol. 149, no. 2, p. 421.
Nakada, M.P., Chapman, R.D., Neupert, W.M., and Thomas, R.J., Coronal temperatures and temperature gradients from OSO-7 spectroheliograms, Sol. Phys., 1976, vol. 47, pp. 611–635.
Parker, E.N., The instability of a horizontal magnetic field in an atmosphere stable against convection, Astrophys. Space Sci., 1979, vol. 62, pp. 135–142.
Piddington, J.H., A model of the quiet solar atmosphere, Sol. Phys., 1972, vol. 27, pp. 402–418.
Priest, E.R., Magnetohydrodynamics of the Sun, Cambridge: Cambridge University Press, 2014.
Reeves, E.M., Noyes, R.W., and Withbroe, G.L., Observing programs in solar physics during the 1973 ATM Skylab program, Sol. Phys., 1972, vol. 27, pp. 251–270.
Romanov, K.V., The effect of heat conduction on the formation of coronal condensations in the solar atmosphere, Geomagn. Aeron. (Engl. Transl.), 2018, vol. 58, no. 8, pp. 1123–1128.
Roosen, J. and Goh, T., The distribution of the 9 cm radio emission over the solar disk during the sunspot minimum, Sol. Phys., 1967, vol. 1, pp. 242–253.
Schwarzschild, M., On noise arising from the solar granulation, Astrophys. J., 1948, vol. 107, pp. 1–5.
Ulmschneider, P., Radiation loss and mechanical heating in the solar chromosphere, Sol. Phys., 1974, vol. 39, pp. 327–336.
Vernazza, J.E., Avertt, E.H., and Loeser, R., Structure of the solar chromosphere. I. Basic computation and summary of the results, Astrophys. J., 1973, vol. 184, pp. 605–631.
Zaitsev, V.V. and Stepanov, A.V., Towards the circuit theory of solar flares, Sol. Phys., 1992, vol. 139, pp. 343–356.
Zirin, G., Solnechnaya atmosfera (The Solar Atmosphere), Moscow: Mir, 1969.
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated by N. Astafiev
Rights and permissions
About this article
Cite this article
Romanov, K.V. Anomalous Heating of the Solar Atmosphere in the Epoch of the Solar Activity Minimum. Geomagn. Aeron. 59, 1121–1127 (2019). https://doi.org/10.1134/S0016793219080164
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0016793219080164