On the Role of Large-Scale Solar Photospheric Motions in the Cosmic-Ray 1.68-YR Intensity Variation

作者: José F. Valdés-Galicia , Blanca Mendoza

DOI: 10.1023/A:1004922926205

关键词: Variation (astronomy)Cosmic rayPhysicsTime evolutionAstrophysicsMagnetic fluxCoronal holeIntensity (physics)Meridional circulationScale (descriptive set theory)Astronomy

摘要: Analysis of cosmic-ray intensity time evolution has led to the identification variations with several periodicities, most them correlated one or another phenomenon Sun. Recently Valdes-Galicia, Perez-Enriquez, and Otaola (1996) reported on a newly-found 1.68-yr variation, which seems be periodicities in X-ray long-duration events low-latitude coronal hole area variations. As those phenomena are related magnetic flux emergence transport, this paper we investigate possible relationship referred variation characteristic times different tracers meridional circulation. Our results indicate that calculated might variation. A physical mechanism through connection may operate is discussed.

参考文章(28)
Peter A. Gilman, Robert Howard, On the correlation of longitudinal and latitudinal motions of sunspots Solar Physics. ,vol. 93, pp. 171- 175 ,(1984) , 10.1007/BF00156661
Vojtech Rusin, Petr Heinzel, Jean-Claude Vial, Solar coronal structures IAU Colloq. 144: Solar Coronal Structures. ,(1994)
Günther Rüdiger, Differential rotation and stellar convection : sun and solar-type stars Gordon and Breach Science. ,(1989)
G. Lustig, H. Wöhl, The meridional motions of stable recurrent sunspots Astronomy and Astrophysics. ,vol. 249, pp. 528- 532 ,(1991)
T. L. Duvall, S. D'Silva, S. M. Jefferies, J. W. Harvey, J. Schou, Downflows under sunspots detected by helioseismic tomography Nature. ,vol. 379, pp. 235- 237 ,(1996) , 10.1038/379235A0
J. Kota, J. R. Jokipii, Effects of drift on the transport of cosmic rays. VI - A three-dimensional model including diffusion The Astrophysical Journal. ,vol. 265, pp. 573- 581 ,(1983) , 10.1086/160701
Herschel B. Snodgrass, Sara B. Dailey, Meridional motions of magnetic features in the solar photosphere Solar Physics. ,vol. 163, pp. 21- 42 ,(1996) , 10.1007/BF00165454
H. B. Snodgrass, P. R. Wilson, Solar torsional oscillations as a signature of giant cells Nature. ,vol. 328, pp. 696- 699 ,(1987) , 10.1038/328696A0
H. B. Snodgrass, R. Howard, Limits on photospheric Doppler signatures for solar giant cells The Astrophysical Journal. ,vol. 284, pp. 848- 855 ,(1984) , 10.1086/162468
Ken Topka, Ron Moore, Barry J. LaBonte, Robert Howard, Evidence for a poleward meridional flow on the sun Solar Physics. ,vol. 79, pp. 231- 245 ,(1982) , 10.1007/BF00146242