Actions
  • shareshare
  • link
  • cite
  • add
add
auto_awesome_motion View all 3 versions
Publication . Preprint . Article . 2017

North–South Asymmetry in Rieger-type Periodicity during Solar Cycles 19–23

Eka Gurgenashvili; Teimuraz V. Zaqarashvili; V. Kukhianidze; Ramon Oliver; Jose Luis Ballester; Mausumi Dikpati; Scott W. McIntosh;
Open Access
Published: 26 Jul 2017 Journal: The Astrophysical Journal, volume 845, page 137 (eissn: 1538-4357, Copyright policy )
Publisher: American Astronomical Society
Abstract

Rieger-type periodicity has been detected in different activity indices over many solar cycles. It was recently shown that the periodicity correlates with solar activity having a shorter period during stronger cycles. Solar activity level is generally asymmetric between northern and southern hemispheres, which could suggest the presence of a similar behavior in the Rieger-type periodicity. We analyse the sunspot area/number and the total magnetic flux data for northern and southern hemispheres during solar cycles 19-23 which had remarkable north-south asymmetry. Using wavelet analysis of sunspot area and number during the north-dominated cycles (19-20) we obtained the periodicity of 160-165 days in the stronger northern hemisphere and 180-190 days in the weaker southern hemisphere. On the other hand, south-dominated cycles (21-23) display the periodicity of 155-160 days in the stronger southern hemisphere and 175-188 days in the weaker northern hemisphere. Therefore, the Rieger-type periodicity has the north-south asymmetry in sunspot area/number data during solar cycles with strong hemispheric asymmetry. We suggest that the periodicity is caused by magnetic Rossby waves in the internal dynamo layer. Using the dispersion relation of magnetic Rossby waves and observed Rieger periodicity we estimated the magnetic field strength in the layer as 45-49 kG in more active hemispheres (north during the cycles 19-20 and south during the cycles 21-23) and 33-40 kG in weaker hemispheres. The estimated difference in the hemispheric field strength is around 10 kG, which provides a challenge for dynamo models. Total magnetic flux data during the cycle 20-23 reveals no clear north-south asymmetry which needs to be explained in the future.

22 pages, 7 figures

Subjects by Vocabulary

Microsoft Academic Graph classification: Northern Hemisphere Rossby wave Asymmetry media_common.quotation_subject media_common Dynamo Atmospheric sciences Field strength Physics Sunspot Solar cycle Southern Hemisphere

Subjects

Space and Planetary Science, Astronomy and Astrophysics, Astrophysics - Solar and Stellar Astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), FOS: Physical sciences

Bai, T., & Cliver, E. H. 1990, ApJ., 363, 299 Bai, T.,& Sturrock, P. A., 1987, Nature, 327, 601 Ballester, J. L., Oliver, R., & Carbonell, M. 2002, ApJ, 566, 505 Ballester, J. L., Oliver, R., & Carbonell, M. 2005, A& A, 431, L5 Ballester, J. L., Oliver, R., & Baudin, F. 1999, ApJL, 522, L153 Belucz, B., Forga´cs-Dajka, E., and Dikpati, M., 2013a, Astronomische Nachrichten, 334, 960 Belucz, B. and Dikpati, M., 2013b, ApJ, 779, 4 Carbonell, M., & Ballester, J. L. 1990, A&A, 238, 377 Carbonell, M., & Ballester, J. L. 1992, A&A, 255, 350 Carbonell, M., Oliver, R., & Ballester, J. L. 1993, A&A, 274, 497 Carbonell, M., Terradas, J., Oliver, R., & Ballester, J. L., 2007, A&A, 476, 951 Charbonneau, P., 2010, LRSP, 7, URL : http://www.livingreviews.org/lrsp-2010-3 Charbonneau, P., 2013, JPhCS, 440, 012014 Chumak, O., Obridko, V., Zhang, H., Ai, G., Utrobin, V., & Krasotkin, S.2003, Astron. Astrophys. Trans., 22, 335

Cliver, E. W., & Ling, A. G. 2016, Solar Phys., 291, 2763 Cliver,E. W., 2017, J. Space Weather Space Clim., 7, A12 Gurgenashvili, E., Zaqarashvili, T. V., Kukhianidze, V., Oliver, R., Ballester, J. L., Ramishvili, G., Shergelashvili, B., Hanslmeier, A., Poedts, S., 2016, ApJ, 826, 55 Gigolashvili, M. Sh., Japaridze, D. R., Mdzinarishvili, T. G., & Chargeishvili, B. B. 2005,SoPh., 227, 27

Javaraiah, J., Bertello, L., & Ulrich, R.K. 2005b, Sol. Phys., 232, 25 Kile, J. N., & Cliver, E. W. 1991, ApJ, 370, 442 Krivova, N. A., & Solanki, S. 2002, A&A, 394, 701 Lean, J. L., & Brueckner, G. E. 1989, ApJ, 337, 568 Lean, J. L. 1990, ApJ, 363, 718 Li, K. J., Wang, J. X., Xiong, S. Y., et al. 2002, A&A, 383, 648 McIntosh, S. W., Leamon, R. J., Gurman, J. B., et al. 2013, ApJ, 765, 146 McIntosh, S. W., Wang, X., Leamon, R. J., et al. 2014, ApJ, 792, 12 McIntosh, S. W., & Leamon, R. J. 2014, ApJL, 796, L19 McIntosh, S. W., Leamon, R. J., Krista, L. D., et al. 2015, Nature Communications, 6, 6491 McIntosh, S. W., Cramer W. J., Marcano M. P., and Leamon, R. J., 2017, Nature Astronomy, 1, 0086

Newton, H.W., Milsom, A. S., 1955, MNRAS., 115, 398 Oliver, R., & Ballester, J. L. 1994, SoPh, 152, 481 Oliver, R., Ballester, J. L., & Boudin, F. 1998, Nature, 394, 552 Rabin, D. M., DeVore, C. R., Sheeley, N. R., Harvey, K. L., & Hoeksema,J. T. 1991, Solar Interior and Atmosphere, ed. A. C. Cox, W. C. Livingston, & M. S. Matthews (Tucson: Univ. Arizona Press), 781

Rieger, E., Share, G. H., Forrest, D. J., Kanbach, G., Reppin, C., et al. 1984, Nature, 312, 623

Sturrock, P.A., Scargle, J.D., Walther, G.T., Wheatland, M.S., ApJ, 523, L177, 1999 Temmer, M., Veronig, A., & Hanslmeier, A. 2002, A&A, 390, 707 Temmer, M., Ryba´k, J., Bendk´, P., Veronig, A., Vogler, F., Otruba, W., Po¨tzi, W., Hanslmeier, A., 2006, A&A., 447, 735.

Torrence, C., & Compo, G. P. 1998, BAMS, 79, 61 Usoskin, I.G., Arlt, R., Asvestari, E., Hawkins, E., Ka¨pyl¨a, M., Kovaltsov, G.A., Krivova, N., Lockwood, M., Mursula, K., OReilly, J., Owens, M., Scott, C,J., Sokoloff, D.D., Solanki, S.K., Soon, W., and Vaquero, J.M.,2015, A&A, 581, A95 Vaquero, J.M., Trigo R.M., Vzquez M., Gallego,M.C., 2010, New Astronomy, 15, 385 Vaquero, J.M., Nogales, J.M., S´anchez-Bajo, F., 2015, Adv. Spa. Sci., 55, 1546 Verma, V. K. 1992, ASP Conf. Series, 27, 429 Waldmeier, M., 1971., SoPh, 20, 332 Willis, D.M., Wild, M.N., Appleby, G.M. et al. 2016, Sol Phys , 291, 2553 Willis, D.M., Wild, M.N. & Warburton,J.S., 2016, Sol Phys, 291, 2519 Zaqarashvili, T. V., Oliver, R., Ballester, J. L., & Shergelashvili, B. M. 2007, A&A, 470, 815 Zaqarashvili, T. V., Oliver, R., & Ballester, J. L. 2009, ApJL, 691, L41 Zaqarashvili, T. V., Carbonell, M., Oliver, R., & Ballester, J. L. 2010a, ApJ, 709, 749 Zaqarashvili, T. V., Oliver, R., Hanslmeier, A., Carbonell, M., Ballester, J. L., et al. 2015, ApJL, 805, L14

Zhang, J., & Feng, W. 2015, ApJ, 150, 74

Funded by
FWF| Magnetic Rossby waves on the Sun
Project
  • Funder: Austrian Science Fund (FWF) (FWF)
  • Project Code: P 26181
  • Funding stream: Einzelprojekte
moresidebar