Solar magnetic activity: topology and prediction

Czasopismo : Acta Geophysica
Tytuł artykułu : Solar magnetic activity: topology and prediction

Autorzy :
Lilensten, J.
Laboratoire de Planétologie de Grenoble, OSUG-CNRS, Grenoble, France, jean.lilensten@obs.ujf-grenoble.fr,
Zuccarello, F.
Dipartimento di Fisica e Astronomia, Universitá di Catania, Catania, Italy, fzu@oact.inaf.it,
Zuccarello, F.
Dipartimento di Fisica e Astronomia, Universitá di Catania, Catania, Italy, fzu@oact.inaf.it,
Lundstedt, H.
Swedish Institute of Space Physics, Lund, Sweden, henrik@lund.irf.se,
Abstrakty : We ascribe the solar magnetic activity to the interplay between the plasma flow and the magnetic field. Observations by SOHO, Hinode and upcoming SDO are discussed. We then discuss the understanding and modeling of solar magnetic activity based on mathematical topological concepts. We present predictions using neural networks. Further we describe the outcome of the cycle 24 prediction panel. Finally, recommendations are given for making improved predictions.

Słowa kluczowe : solar magnetic activity, topology,
Wydawnictwo : Instytut Geofizyki PAN
Rocznik : 2009
Numer : Vol. 57, no. 1
Strony : 31 – 41
Bibliografia : Bothmer, V., and A. Zhukov (2007), The Sun as the prime source of space weather. In: V. Bothmer and I.A. Daglis (eds.), Space Weather – Physics and Effects, 31-102, Springer/Praxis, Berlin,
Bushby, P.J., and S. Tobias (2007), On predicting the solar cycle using mean-field models, Astrophys. J. 661, 1289-1296,
Choudhuri, A.R., P. Chatterjee, and J. Jiang (2007), Predicting solar cycle 24 with a solar dynamo model, Phys. Rev. Lett. 98, 131103,
Cui, Y., R. Li, L. Zhang, Y. He, and H. Wang (2006), Correlation between solar flare productivity and photospheric magnetic field properties, Solar Phys. 237, 1, 45-59 ,
Dikpati, M., G. de Toma, and P.A. Gilman (2006), Predicting the strength of solar cycle 24 using a flux-transport dynamo-based tool, Geophys. Res. Lett. 33, L05102,
Jensen, J.M., H. Lundstedt, M.J. Thompson, F.P. Pijpers, and S.P. Rajaguru (2004), Application of local-area helioseismic methods as predicters of space weather. In: D. Danesy (ed.), Helio- and Asteroseismology: Towards a Golden Future, Proc. SOHO 14/GONG+ 2004 Meeting, ESA SP-559, 12-16 July, 2004, New Haven, CT, 497-500.
Longcope, D.W. (2005), Topological methods for the analysis of solar magnetic fields, Living Rev. Solar Phys. 2, 7, http://www.livingreviews.org/lrsp-2005-7.
Lundstedt, H. (2005), Progress in space weather predictions and applications, Adv. Space Res. 36, 2516-2523, DOI: 10.1016/j.asr.2003.09.072.
Lundstedt, H. (2006), Solar activity modelled and forecasted: A new approach, Adv. Space Res. 38, 862-867,
Lundstedt, H. (2007), On the prediction of solar magnetic activity, OPOCE (Office des Publications Officiales des Communautes Europenne).
Lundstedt, H., L. Liszka, R. Lundin, and R. Muscheler (2006), Long-term solar activity explored with wavelet methods, Ann. Geophys. 24, 1-9.
Messerotti, M. (2002), Embedding knowledge in scientific databases via concept maps as metadata. In: Proc. “SOLSPA: The Second Solar Cycle and Space Weather Euroconference”, Vico Equense, Italy, 24-29 September 2001, ESA SP-477, 607-610.
Pohl, W.F. (1968), The self-linking number of a closed space curve, J. Math. Mech.17, 975-85. Stenflo, J.O. (2004), Solar physics: Hidden magnetism, Nature 430, 304-305,
Strong, K.T., and J.L.R. Saba (2007), Are we looking at the Solar Cycle in completely wrong way, Paper presented at Space Weather Week, April 24-27, Boulder, USA.
Svalgaard, L., E.W. Cliver, and Y. Kamide (2005), Cycle 24: Smallest sunspot cycle in 100 years? Geophys. Res. Lett. 32, L01104,
Tobias, S., N.O. Weiss, and V. Kirk (1995), Chaotically modulated stellar dynamos, Mon. Not. R. Astron. Soc. 273, 1150-1166.
DOI :
Cytuj : Lilensten, J. ,Zuccarello, F. ,Zuccarello, F. ,Lundstedt, H. , Solar magnetic activity: topology and prediction. Acta Geophysica Vol. 57, no. 1/2009
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