Asymmetry of solar polar fields and the southward shift of HCS observed by Ulysses

Journal of Geophysical Research: Space Physics

Volumn 115, Issue 9, 2010, Pages

  Virtanen, I I ^a   Mursula, K ^a  

^a UNIVERSITY OF OULU   (Finland)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 77957592760     PISSN: None     EISSN: 21699402     Source Type: Journal    
DOI: 10.1029/2010JA015275     Document Type: Article

References (20)

1. Altschuler, M. D., and G. Newkirk (1969), Magnetic fields and the structure of the solar corona. I: Methods of calculating coronal fields, Sol. Phys., 9, 131-149.
2. Cranmer, S. R. (2004), New views of the solar wind with lambert W function, Am. J. Phys., 72, 1397-1403.
3. Crooker, N. U., A. J. Lazarus, J. L. Phillips, J. T. Steinberg, A. Szabo, R. P. Lepping, and E. J. Smith (1997), Coronal streamer belt asymmetries and seasonal solar wind variations deduced from wind and Ulysses data, J. Geophys. Res., 102, 4673-4679.
4. Erdös, G., and A. Balogh (1998), The symmetry of the heliospheric current sheet as observed by Ulysses during the fast latitude scan, Geophys. Res. Lett., 25, 245-248.
5. Erdös, G., and A. Balogh (2010), North-south asymmetry of the location of the heliospheric current sheet revisited, J. Geophys. Res., 115, A01105, doi:10.1029/2009JA014620.
6. Forsyth, R. J., A. Balogh, T. S. Horbury, G. Erdoes, E. J. Smith, and M. E. Burton (1996), The heliospheric magnetic field at solar minimum: Ulysses observations from pole to pole, Astron. Astrophys., 316, 287-295. (Pubitemid 126522377)
7. Gibson, S. E., J. U Kozyra, G. de Toma, B. A. Emery, T. Onsager, and B. J. Thompson (2009), If the Sun is so quiet, why is the Earth ringing? A comparison of two solar minimum intervals, J. Geophys. Res., 114, A09105, doi:10.1029/2009JA014342.
8. Harvey, K. L., and F. Recely (2002), Polar coronal holes during cycles 22 and 23, Sol. Phys., 211, 31-52.
9. Hiltula, T., and K. Mursula (2006), Long dance of the bashful ballerina, Geophys. Res. Lett., 33, L03105, doi:10.1029/2005GL025198.
10. Kirk, M. S., W. D. Pesnell, C. A. Young, and S. A. Hess Webber (2009), Automated detection of EUV polar coronal holes during solar cycle 23, Sol. Phys., 257, 99-112.
11. Lukianova, R., and K. Mursula (2010), Changed relation between sunspot numbers, solar UV/EUV radiation and TSI during the declining phase of solar cycle 23, J. Atmos. Sol. Terr. Phys., doi:10.1016/j.jastp.2010. 04.002, in press.
12. Mursula, K., and T. Hiltula (2003), Bashful ballerina: Southward shifted heliospheric current sheet, Geophys. Res. Lett., 30(22), 2135, doi:10.1029/2003GL018201.
13. Mursula, K., and I. I. Virtanen (2010), The last dance of the bashful ballerina?, Astron. Astrophys., in press.
14. Schatten, K. H., J. M. Wilcox, and N. F. Ness (1969), A model of interplanetary and coronal magnetic fields, Sol. Phys., 6, 442-455.
15. Simpson, J. A., M. Zhang, and S. Bame (1996), A solar polar north-south asymmetry for cosmic-ray propagation in the heliosphere: The Ulysses pole-to-pole rapid transit, Astrophys. J., 465, L69-L72.
16. Smith, E. J., and A. Balogh (1995), Ulysses observations of the radial magnetic field, Geophys. Res. Lett., 22, 3317-3320.
17. Smith, E. J., and A. Balogh (2008), Decrease in heliospheric magnetic flux in this solar minimum: Recent Ulysses magnetic field observations, Geophys. Res. Lett., 35, L22103, doi:10.1029/2008GL035345.
18. Smith, E. J., J. R. Jokipii, J. Kóta, R. P. Lepping, and A. Szabo (2000), Evidence of a north-south asymmetry in the heliosphere associated with a southward displacement of the heliospheric current sheet, Astrophys. J., 533, 1084-1089.
19. Wang, Y.-M., and N. R. Sheeley (1992), On potential field models of the solar corona, Astrophys. J., 392, 310-319.
20. Zhao, X. P., J. T. Hoeksema, and P. H. Scherrer (2005), Prediction and understanding of the north-south displacement of the heliospheric current sheet, J. Geophys. Res., 110, A10101, doi:10.1029/2004JA010723. (Pubitemid 44971547)