Abstract
The past 24th cycle of solar activity was developing under the conditions when background magnitudes of the general magnetic field of the Sun had dropped by more than half after the transitional 23rd cycle. This induced a complete restructuring of the physical conditions on the Sun and, consequently, in the heliosphere and influenced the state of the near-Earth space environment. Cycle 24 proceeded as a low-magnitude cycle, and the level of sunspot and flare activity was substantially lower than that of all previous solar cycles of the space era. It was the first time the evolution of an initial cycle in the epoch of lowered solar activity could minutely be analyzed on the basis of a reliable series of observations of solar flares.
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Notes
Recovered SCs.
REFERENCES
V. N. Ishkov and I. G. Shibaev, Izv. Akad. Nauk, Ser. Fiz. 70 (10), 1439 (2006).
V. N. Ishkov, in Solar and Solar–Terrestial Physics— 2013, Ed. by Yu. A. Nagovitsin (VVM, St. Petersburg, 2013), p. 111. http://www.gao.spb.ru/russian/publ-s/conf_2013/conf_2013.pdf.
K. L. Harvey, F. Recely, J. Hirman, and N. Cohen, in Proceedings of the Workshop at Hitachi on Solar–Terrestrial Prediction, Japan, 1996 (1996), Vol. 5, p. 77.
P. A Otkidychev, N. N. Skorbezh, in Solar and Solar–Terrestial Physics—2013, Ed. by Yu. A. Nagovitsin (VVM, St. Petersburg, 2013), p. 111. http://www.gao.spb.ru/russian/publ-s/conf_2013/conf_2013.pdf.
C. Fröhlich, Surv. Geophys. 33, 453 (2012).
W. Livingston and F. Watson, Geophys. Res. Lett. 42, 9185 (2016).
S. J. Hofmeister, A. Veronig, M. A. Reiss, M. Temmer, S. Vennerstrom, B. Vrsnak, and B. Heber, Astrophys. J. 835, 17 (2017).
S. G. Heinemann, M. Temmer, N. Heinemann, K. Dissauer, E. Samara, V. Jercic, S. J. Hofmeister, and A. M. Veronig, Solar Phys. 294, 144 (2019).
K. Harvey, J. Harvey, and N. Sheeley, Solar Phys. 79, 149 (1982).
D. J. McComas, N. Angold, H. A. Elliott, G. Livadiotis, N. A. Schwadron, R. M. Skoug, and C. W. Smith, Astrophys. J. 779, 10 (2013).
V. V. Vasil’eva, A. G. Tlatov, in Solar and Solar–Terrestial Physics—2015, Ed. by Yu. A. Nagovitsin (VVM, St. Petersburg, 2015), p. 39.
R. Selvakumaran, B. Veenadhari, S. Akiyama, M. Pandya, N. Gopalswamy, S. Yashiro, S. Kumar, P. Mäkelä, and H. Xie, J. Geophys. Res. (Space Phys.) 121, 8188 (2016).
V. N. Ishkov, Izv. Akad. Nauk, Ser. Fiz. 62, 1835 (1998).
S. E. Gibson, J. U. Kozyra, G. de Toma, et al., J. Geophys. Res. 114, A09105 (2009).
R. Ebert, D. McComas, H. Elliott, and R. Forsyth, J. Geophys Res. 114, 109 (2009).
Y. Hao, H. Shi, Z. Xiao, and D. Zhang, Ann. Geophys. 32, 809 (2014).
M. Paassilta, O. Raukunen, R. Vainio, E. Valtonen, et al., J. Space Weather Space Clim. 7, A14 (2017).
Yu. I. Logachev, G. A. Bazilevskaya, E. I. Daibog, E. A. Ginzburg, et al., Geosciences Database. http://esdb.wdcb.ru/. Accessed 2019.
R. Mewaldt, C. Cohen, C. Mason, T. von Rosenvinge, and A. Vourlidas, in Proceedings of the 34th International Cosmic Ray Conference, Hague, Netherlands, 2015, p. 8. https://pos.sissa.it/236/139/pdf.
V. N. Ishkov, Geomagn. Aeron. 61 (2021, in press).
V. N. Ishkov, Geomagn. Aeron. 53, 971 (2013).
Yu. A. Fursyak, Izv. KrAO 111, 19 (2015).
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Ishkov, V.N. Outcomes and Lessons from Cycle 24—the First Cycle in the Second Epoch of Low Solar Activity. Astron. Rep. 66, 48–63 (2022). https://doi.org/10.1134/S1063772922020056
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DOI: https://doi.org/10.1134/S1063772922020056