Abstract
We report a study of major solar energetic particle (SEP) and ground level enhancement (GLE) events that occurred during the first 62 months of the rising phase of the 24th solar cycle. Our objective is to comprehend the key factors that influence the severity and occurrence of such events. The coronal mass ejection (CME) speed (serves as or is) is a reliable indicator of SEP and GLE events, as it consistently supports the shock acceleration mechanism. Some very fast CMEs, which are likely to have accelerated particles up to GeV energies, may not have resulted in a GLE event due to poor latitudinal connectivity. We have emphasized that the CME speed, magnetic connectivity to Earth, and ambient conditions are the main or primary factors that contribute to the lack of high-energy particle events during cycle 24. Furthermore, we observed that even well-connected fast CMEs that did not seem to have accelerated high-energy particles due to potentially unfavourable prevailing conditions such as high Alfven speed and overall reduction in acceleration efficiency in cycle 24. These conclusions are generally supported by insights gleaned from the observation of the time series of SW-IMF parameters on the flare day.
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References
Aellig, M.R., Lazarus, A.J., Steinberg, J.T.: The solar wind helium abundance: variation with wind speed and the solar cycle. Geophys. Res. Lett. 28(14), 2767–2770 (2001). https://doi.org/10.1029/2000GL012771
Balan, N., Tulasiram, S.S., Kamide, Y., Batista, I.S., Souza, J.R., Shiokawa, K., Rajesh, P.K., Victor, N.J.: Automatic selection of Dst storms and their seasonal variations in two versions of Dst in 50 years. Earth Planets Space 69, 1–11 (2017)
Desai, M., Giacalone, J.: Large gradual solar energetic particle events. Living Rev. Sol. Phys. 13(1), 3 (2016). https://doi.org/10.1007/s41116-016-0002-5
Emslie, A.G., Dennis, B.R., Shih, A.Y., Chamberlin, P.C., Mewaldt, R.A., Moore, C.S., Share, G.H., Vourlidas, A., Welsch, B.T.: Global energetics of thirty-eight large solar eruptive events. Astrophys. J. 759, 71 (2012). https://doi.org/10.1088/0004-637X/759/1/71. arXiv:1209.2654
Firoz, K.A., Gan, W.Q., Li, Y.P., Rodríguez-Pacheco, J., Kudela, K.: On the possible mechanism of GLE initiation. Astrophys. J. 872(2), 178 (2019). https://doi.org/10.3847/1538-4357/ab0381
Forbush, S.E.: Three unusual cosmic-ray increases possibly due to charged particles from the Sun. Phys. Rev. 70(9–10), 771–772 (1946). https://doi.org/10.1103/PhysRev.70.771
Gopalswamy, N., Yashiro, S., Akiyama, S., Mäkelä, P., Xie, H., Kaiser, M.L., Howard, R.A., Bougeret, J.L.: Coronal mass ejections, type II radio bursts, and solar energetic particle events in the SOHO era. Ann. Geophys. 26, 3033–3047 (2008)
Gopalswamy, N., Xie, H., Yashiro, S., Akiyama, S., Mäkelä, P., Usoskin, I.G.: Properties of ground level enhancement events and the associated solar eruptions during solar cycle 23. Space Sci. Rev. 171, 23–60 (2012) https://doi.org/10.1007/s11214-012-9890-4
Gopalswamy, N., Mäkelä, P.A., Akiyama, S., Xie, H., Yashiro, S., Reinard, A.A.: The solar connection of enhanced heavy ion charge states in the interplanetary medium: implications for the flux-rope structure of CMEs. Sol. Phys. 284, 17–46 (2013a)
Gopalswamy, N., Xie, H., Akiyama, S., Yashiro, S., Usoskin, I., Davila, J.: The first ground level enhancement event of solar cycle 24: direct observation of shock formation and particle release heights. Astrophys. J. Lett. 765, L30 (2013b). https://doi.org/10.1088/2041-8205/765/2/L30
Gopalswamy, N., Akiyama, S., Yashiro, S., Xie, H., Mäkelä, P., Michalek, G.: Anomalous expansion of coronal mass ejections during solar cycle 24 and its space weather implications. Geophys. Res. Lett. 41, 2673–2680 (2014). https://doi.org/10.1002/2014gl059858
Gopalswamy, N., Mäkelä, P., Akiyama, S., Yashiro, S., Xie, H., Thakur, N., Kahler, S.W.: Large solar energetic particle events associated with filament eruptions outside active regions. Astrophys. J. 806, 8 (2015). https://doi.org/10.1088/0004-637X/806/1/8
Henke, T., Woch, J., Mall, U., Livi, S., Wilken, B., Schwenn, R., Gloeckler, G., Von Steiger, R., Forsyth, R.J., Balogh, A.: Differences in the \(\mathrm{O}^{7+}\)/\(\mathrm{O}^{6+}\) ratio of magnetic cloud and non-cloud coronal mass ejections. Geophys. Res. Lett. 25(18), 3465–3468 (1998). https://doi.org/10.1029/98GL02632
Kahler, S.W., Hildner, E.G., Hollebeke, M.A.: Prompt solar proton events and coronal mass ejections. Sol. Phys. 57, 429–443 (1978)
Kahler, S.W., Reames, D.V., Sheeley, N.R.: Coronal mass ejections associated with impulsive solar energetic particle events. Astrophys. J. 562, 558–565 (2001)
Kamide, Y., Rostoker, G.: What is the physical meaning of the AE index? Eos Trans. AGU 85, 188–192 (2004). https://doi.org/10.1029/2004EO190010
Kilpua, E.K.J., Lugaz, N., Mays, M.L., Temmer, M.: Forecasting the structure and orientation of earthbound coronal mass ejections. Space Weather 17, 498–526 (2019). https://doi.org/10.1029/2018SW001944
Liu, Y.D., Luhmann, J., Kajdic, P., Kilpua, E.K.J., Lugaz, N., Nitta, N.V., Mostl, C., Lavraud, B., Bale, S.D., Farrugia, C.J., Galvin, A.P.: Observations of an extreme storm in interplanetary space caused by successive coronal mass ejections”. Nat. Commun. 5, 3481 (2014). https://doi.org/10.1038/ncomms4481
Manchester, W., Kilpua, E.K.J., Liu, Y.D., Lugaz, N., Riley, P., Török, T., Vršnak, B.: The physical processes of CME/ICME evolution. Space Sci. Rev. 212(3), 1159–1219 (2017). https://doi.org/10.1007/s11214-017-0394-0
Mewaldt, Richard., Looper, M., Cohen, C., Haggerty, D., Labrador, A., Leske, R., Mason, G., Mazur, J., Rosenvinge, T.: Energy spectra, composition, and other properties of ground-level events during solar cycle 23. Space Sci. Rev. 171, 97–120 (2012). https://doi.org/10.1007/s11214-012-9884-2
Meyer, P., Parker, E.N., Simpson, J.A., Lugaz, N., Riley, P., Török, T., Vršnak, B.: Solar cosmic rays of February, 1956 and their propagation through interplanetary space. Phys. Rev. 104(3), 768–783 (1956). https://doi.org/10.1103/PhysRev.104.768
Reames, D.V.: Solar energetic-particle release times in historic ground-level events. Astrophys. J. 706, 844–850 (2009)
Reames, D.V.: The two sources of solar energetic particles. Space Sci. Rev. 175, 53–92 (2013). https://doi.org/10.1007/s11214-013-9958-9
Richardson, J.D., Wang, C., Burlaga, L.F.: Correlated solar wind speed, density and magnetic field changes at Voyager 2. Geophys. Res. Lett. 30(23), 2207–2210 (2003). https://doi.org/10.1029/2003GL018253
Riley, P., Mays, L., Andries, J., Amerstorfer, T., Biesecker, D., Delouille, V., Dumbovic, M., Feng, X., Henley, E., Linker, J.A., Möstl, C., Nuñez, M., Pizzo, V., Temmer, M., Tobiska, W.K., Verbeke, C., West, M.J., Zhao, X.: Forecasting the arrival time of coronal mass ejections: analysis of the CCMC CME scoreboard. Space Weather 16, 1245–1260 (2018). https://doi.org/10.1029/2018SW001962
Shea, M.A., Smart, D.F.: Significant proton events of solar cycle 22 and a comparison with events of previous solar cycles. Adv. Space Res. 14(10), 631–638 (1994). https://doi.org/10.1016/0273-1177(94)90518-5
Tousey, R.: The solar corona. In: Rycroft, M.J., Runcorn, S.K. (eds.) Space Research XIII, p. 713. Akademie Verlag, Berlin (1973)
Waterfall, C.O.G., Dalla, S., Raukunen, O., Heynderickx, D., Jiggens, P., Vainio, R.: High energy solar particle events and their relationship to associated flare, CME and GLE parameters. Space Weather 21(3), e2022SW003334 (2023). https://doi.org/10.1029/2022SW003334
Wild, J.P., Smerd, S.F., Weiss, A.A.: Solar bursts. Annu. Rev. Astron. Astrophys. 1, 291–366 (1963). https://doi.org/10.1146/annurev.aa.01.090163.001451
Zhang, Y., Rossow, W.B., Lacis, A.A., Oinas, V.: Calculation, evaluation and application of long-term, global radiative flux datasets at ISCCP: past and present. In: Luo, Z.J., Tselioudis, G., Rossow, W.B. (eds.) Studies of Cloud, Convection and Precipitation Processes Using Satellite Observations. Lectures in Climate Change, vol. 3, pp. 151–171 (2022). https://doi.org/10.1142/9789811256912_0009
Ziegler, J.F.: Terrestrial cosmic rays. IBM J. Res. Dev. 40(1), 19–39 (1996). https://doi.org/10.1147/rd.401.0019
Acknowledgements
The authors acknowledge Kyoto WDC (http://wdc.kugi.kyoto-u.ac.jp/) for the AE and Kp index data as well as the Wind satellite team for the CME and IMF data (http://omniweb.gsfc.nasa.gov/).
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NK, RDI and KE are responsible for the inception and execution of the project and the preparation of the draft of the manuscript. KE and NM prepared the figures and analysis, JJ and NK were involved in improving the manuscript. All authors contributed to the preparation of the final draft.
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R, N.K., C, R.D.I., E, K. et al. Analysis of solar energetic particle (SEP) event on the geomagnetic environment during 24th solar cycle. Astrophys Space Sci 369, 56 (2024). https://doi.org/10.1007/s10509-024-04320-8
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DOI: https://doi.org/10.1007/s10509-024-04320-8