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Solar Physics

, Volume 290, Issue 8, pp 2333–2353 | Cite as

Study of Cosmic-Ray Modulation During the Recent Unusual Minimum and Mini-Maximum of Solar Cycle 24

  • O. P. M. Aslam
  • Badruddin
Article

Abstract

After a prolonged and deep solar minimum at the end of Cycle 23, the current Solar Cycle 24 is one of the lowest cycles. These two periods of deep minimum and mini-maximum are separated by a period of increasing solar activity. We study the cosmic-ray intensity variation in relation with the solar activity, heliospheric plasma and magnetic field parameters, including the heliospheric current sheet, during these three periods (phases) of different activity level and nature: (a) a deep minimum, (b) an increasing activity period, and (c) a mini-maximum. We use neutron monitor data from stations located around the globe to study the rigidity dependence on modulation during the two extremes, i.e., minimum and maximum. We also study the time lag between the cosmic-ray intensity and various solar and interplanetary parameters separately during the three activity phases. We also analyze the role of various parameters, including the current sheet tilt, in modulating the cosmic-ray intensity during the three different phases. Their relative importance and the implications of our results are also discussed.

Keywords

Galactic cosmic rays Solar modulation Deep solar minimum Solar wind 

Notes

Acknowledgements

We thank the station managers of the neutron monitors whose data have been used in this study. Availability and use of solar and plasma and field data from the NASA/GSFC OMNI Web interface and the HCS inclination data the Wilcox Solar Observatory, Stanford, are also acknowledged. We also thank the referees, whose comments and suggestions helped us to improve the article.

References

  1. Ahluwalia, H.S.: 2014, Adv. Space Res. 54, 1704.  DOI. CrossRefADSGoogle Scholar
  2. Ahluwalia, H.S., Ygbuhay, R.C.: 2015, Solar Phys. 290, 635.  DOI. CrossRefADSGoogle Scholar
  3. Aslam, O.P.M., Badruddin: 2012, Solar Phys. 279, 269.  DOI. CrossRefADSGoogle Scholar
  4. Aslam, O.P.M., Badruddin: 2014, Solar Phys. 289, 2247.  DOI. CrossRefADSGoogle Scholar
  5. Badruddin: 2011, In: Proc. 32nd Int. Cosmic Ray Conf., SH3.5, 11, 235.  DOI. Google Scholar
  6. Badruddin Singh, M., Singh, Y.P.: 2007, Astron. Astrophys. 466, 697.  DOI. CrossRefADSGoogle Scholar
  7. Burlaga, L.F., McDonald, F.B., Goldstein, M.L., Lazarus, A.J.: 1985, J. Geophys. Res. 90, 12027.  DOI. CrossRefADSGoogle Scholar
  8. Cho, I.H., Hwang, J., Park, Y.D.: 2014, Solar Phys. 289, 707.  DOI. CrossRefADSGoogle Scholar
  9. Chowdhury, P., Kudela, K., Dwivedi, B.N.: 2013, Solar Phys. 286, 577.  DOI. CrossRefADSGoogle Scholar
  10. Cliver, E.W., Ling, A.G.: 2001, Astrophys. J. 551, L189.  DOI. CrossRefADSGoogle Scholar
  11. Cliver, E.W., Richardson, I.G., Ling, A.G.: 2013, Space Sci. Rev. 176, 3.  DOI. CrossRefADSGoogle Scholar
  12. Deng, L.H., Li, B., Xiang, Y.Y., Dun, G.T.: 2015, J. Atmos. Solar-Terr. Phys. 122, 18.  DOI. CrossRefADSGoogle Scholar
  13. Forbush, S.E.: 1954, J. Geophys. Res. 59, 525.  DOI. CrossRefADSGoogle Scholar
  14. Guo, X., Florinski, V.: 2014, J. Geophys. Res. 119, 2411.  DOI. CrossRefGoogle Scholar
  15. Heber, B.: 2013, Space Sci. Rev. 176, 265.  DOI. CrossRefADSGoogle Scholar
  16. Heber, B., Kopp, A., Gieseler, J., Muller-Mellin, R., Fichtner, H., Scherer, K., et al.: 2009, Astrophys. J. 699, 1956.  DOI. CrossRefADSGoogle Scholar
  17. Inceoglu, F., Knudsen, M.F., Karoff, C., Olsen, J.: 2014, Solar Phys. 289, 1387.  DOI. CrossRefADSGoogle Scholar
  18. Jian, L.K., Russell, C.T., Luhmann, J.G.: 2011, Solar Phys. 274, 321.  DOI. CrossRefADSGoogle Scholar
  19. Jokipii, J.R., Levy, E.H., Hubbard, W.B.: 1977, Astrophys. J. 213, 861.  DOI. CrossRefADSGoogle Scholar
  20. Jokipii, J.R., Wibberenz, G.: 1998, Space Sci. Rev. 83, 365.  DOI. CrossRefADSGoogle Scholar
  21. Kane, R.P.: 2003, J. Geophys. Res. 108, 1379.  DOI. CrossRefGoogle Scholar
  22. Kane, R.P.: 2014, Solar Phys. 289, 2727.  DOI. CrossRefADSGoogle Scholar
  23. Kota, J.: 2013, Space Sci. Rev. 176, 391.  DOI. CrossRefADSGoogle Scholar
  24. Kudela, K.: 2009, Acta Phys. Slovaca 59, 537.  DOI. CrossRefADSGoogle Scholar
  25. Laurenza, M., Vecchio, A., Storini, M., Carbone, V.: 2014, Astrophys. J. 781, 71.  DOI. CrossRefADSGoogle Scholar
  26. Leske, R.A., Cummings, A.C., Mewaldt, R.A., Stone, E.C.: 2013, Space Sci. Rev. 176, 253.  DOI. CrossRefADSGoogle Scholar
  27. Mavromichalaki, H., Belehaki, A., Rafois, X.: 1998, Astron. Astrophys. 330, 764. ADSGoogle Scholar
  28. McDonald, F.B., Nand, L., McGuire, R.E.: 1998, J. Geophys. Res. 10, 373.  DOI. CrossRefADSGoogle Scholar
  29. McDonald, F.B., Webber, W.R., Reames, D.V.: 2010, Geophys. Res. Lett. 37, L18101.  DOI. CrossRefADSGoogle Scholar
  30. McKibben, R.B., Connell, J.J., Lopate, C., Simpson, J.A., Zhang, M.: 1995, Space Sci. Rev. 72, 367.  DOI. CrossRefADSGoogle Scholar
  31. Mewaldt, R.A., Davis, A.J., Lave, K.A., Leske, R.A., Stone, E.C., Wiedenbech, M.E., et al.: 2010, Astrophys. J. Lett. 723, L1.  DOI. CrossRefADSGoogle Scholar
  32. Moraal, H., Stoker, P.H.: 2010, J. Geophys. Res. 115, A12109.  DOI. CrossRefADSGoogle Scholar
  33. Mursula, K., Vilppola, J.H.: 2004, Solar Phys. 221, 337.  DOI. CrossRefADSGoogle Scholar
  34. Pacini, A.A., Usoskin, I.G.: 2015, Solar Phys. 290, 943.  DOI. CrossRefADSGoogle Scholar
  35. Parker, E.N.: 1965, Planet. Space Sci. 13, 9.  DOI. CrossRefADSGoogle Scholar
  36. Potgieter, M.S.: 2014, Adv. Space Res. 53, 1415.  DOI. CrossRefADSGoogle Scholar
  37. Potgieter, M.S., Moraal, H.: 1985, Astrophys. J. 294, 425.  DOI. CrossRefADSGoogle Scholar
  38. Potgieter, M.S., Vos, E.E., Boezio, M., De Simone, N., Di Felice, V., Formato, V.: 2014, Solar Phys. 289, 391.  DOI. CrossRefADSGoogle Scholar
  39. Sabbah, I., Rybansky, M.J.: 2006, J. Geophys. Res. 111, A01105.  DOI. ADSGoogle Scholar
  40. Singh, M., Singh, Y.P., Badruddin: 2008, J. Atmos. Solar-Terr. Phys. 70, 169.  DOI. CrossRefADSGoogle Scholar
  41. Smith, E.J., Thomas, B.T.: 1986, J. Geophys. Res. 91, 2933.  DOI. CrossRefADSGoogle Scholar
  42. Storini, M., Borello-Filisetti, O., Mussino, V., Parisi, M., Sykora, J.: 1995, Solar Phys. 157, 375.  DOI. CrossRefADSGoogle Scholar
  43. Strauss, R.D., Potgieter, M.S.: 2014, Solar Phys. 289, 3197.  DOI. CrossRefADSGoogle Scholar
  44. Thomas, S.R., Owens, M.J., Lockwood, M.: 2014, Solar Phys. 289, 407.  DOI. CrossRefADSGoogle Scholar
  45. Thomas, S.R., Owens, M.J., Lockwood, M., Scott, C.J.: 2014, Solar Phys. 289, 2653.  DOI. CrossRefADSGoogle Scholar
  46. Usoskin, I.G., Braun, I., Gladysheva, O.G., Hörandel, J.R., Jämsén, T., Kovaltsov, G.A., et al.: 2008, J. Geophys. Res. 113, A07102.  DOI. ADSGoogle Scholar
  47. Venkatesan, D., Badruddin: 1990, Space Sci. Rev. 52, 121.  DOI. CrossRefADSGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  1. 1.Department of PhysicsAligarh Muslim UniversityAligarhIndia

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