Sidereal cosmic ray variation and its relation with the interplanetary magnetic field polarity
Main Article Content
Abstract
Data from µ-meson telescopes, at different underground depths, have been compared with the predictions of a solar-controlled mechanism proposed by Swinson. The observations at ground level and at moderate depths show a significant field-polarity dependent effect of the kind envisaged by Swinson. The observations at depths greater than 40 m.w.e. do not show an obvious Swinson effect. An explanation is given in terms of the response function of the recorders. The small sidereal variation observed at 60 m.w.e. is explained in terms of the motion of the solar system relative to nearby stars.
Article Details

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
References
AHLUWALIA, H. S., 1971. Median primary energy of response of a cosmic ray telescope underground, J. Geophys. Res., 76 : 5358-5360. DOI: https://doi.org/10.1029/JA076i022p05358
AHLUWALIA, H. S. and J. H. ERIKSEN, 1971. Coupling functions applicable to the underground meson telescopes, J. Geophys. Res., 76 : 6613-6627. DOI: https://doi.org/10.1029/JA076i028p06613
DUTT, 1. C., 1965. Variations of underground cosmic ray intensity with time, Ph. D. Thesis, University of London.
ELLIOT, H., T. THAMBYAHPILLAI and D. S. PEACOCK, 1970. Search for a sidereal anisotropy at 60 m. w. e. depth, Acta Phys. Hung., 29 (2) : 491-500.
ELLIOT, H., T. THAMBYAHPILLAI and J. A. OTAOLA, 1972. Comment on a paper by D. B. Swinson, "Solar Modulation Origin of Sidereal Cosmic Ray Anisotropies", J. Geophys. Res., 77 : 1342-1344. DOI: https://doi.org/10.1029/JA077i007p01342
HUMBLE, J. E., A. G. FENTON, R. D. SPELLER, J. A. OTAOLA, T. THAMBYAHPILLAI, J. C. DUTI, T. MATHEWS, T. MIYAZAKI and D. S. PEACOCK, 1973. Underground cosmic ray observations and interplanetary magnetic field directions. Proc. Internal. Cosmic Ray Conf., Denver. Vol. 2, 976-981.
LENTS, G. A., R. B. MCKIBBEN, J. J. O'GALLAGHER, M. PERKINS, J. A. SIMPSON and A. J. TUZZOLINO, Proc. 13 Int. Cosmic Rays Conf., Denver Colorado, 1973.
MIYAZAKI, T., 1973. Private communication.
NAGASHIMA, K., H. UENO, S. MORI and S. SAGISAKI, 1968. A two-way sidereal anistropy, Can, J. Phys., 46 : 5611. DOI: https://doi.org/10.1139/p68-307
OTAOLA, J. A., 1973. Terrestrial effects of the interplanetary magnetic field sector structure, Ph. D. Thesis, Unviersity of London.
PEACOCK, D. S., 1967. Solar and sidereal daily variations of the cosmic ray intensity observed underground. Ph. D. Thesis, University of London.
PEACOCK, D. S., 1970. Underground response functions and the upper limiting rigidity to solar modulation, Acta Phys. Hung., 29 (2) : 189-194.
SPELLER, R., T. THAMBYAHPILLAI and H. ELLIOT, 1972. Cosmic ray isotropy and the origin problem, Nature, 235 : 25-29. DOI: https://doi.org/10.1038/235025a0
SVALGAARD, L., 1972. Interplanetary magnetic -sector structure 1926-1971, J. Geophys. Res., 77 : 4027-4034. DOI: https://doi.org/10.1029/JA077i022p04027
SWINSON, D. B., 1969. "Sidereal" cosmic-ray diurnal variations, J. Geophys. Res., 74 : 5591-5598. DOI: https://doi.org/10.1029/JA074i024p05591
SWINSON, D. B., 1971. Solar modulation origin of "sidereal" cosmic ray anisotropies, J. Geophys. Res., 76 : 4217-4223. DOI: https://doi.org/10.1029/JA076i019p04217
THOMSON, D. M., 1973. The heliocentric radial gradient in cosmic ray density and the 'Swinson' sidereal time variation, Planet. Space Sci., 21 : 133-143. DOI: https://doi.org/10.1016/0032-0633(73)90025-1
WILCOX, J. M. and D. S. COLBURN, 1969. Interplanetary sector structure in the rising portion of the sunspot cycle, J. Geophys. Res., 74 : 2383-2392. DOI: https://doi.org/10.1029/JA074i009p02388
WILCOX, J. M. and D. S: COLBURN, 1 ~70. Interplanetary sector structure near the maximum of the sunspot cycle, J. Geophys. Res., 75 : 6366-6370. DOI: https://doi.org/10.1029/JA075i031p06366
WILCOX, J. M. and D. S. COLBURN, 1972. Interplanetary sector structure at solar maximum, J. Geophys. Res., 77 : 751-756. DOI: https://doi.org/10.1029/JA077i004p00751