Abstract
Investigation has been made for unusually low-amplitude anisotropic wave train events (LAE) for cosmic ray intensity data of Deep River neutron monitoring station during the period 1981–94. It has been observed that the phase of diurnal anisotropy remains in the same co-rotational direction for most of the LAEs while the phase shifts to early hours for some of the LAEs in diurnal anisotropy. During minimum solar activity, LAEs have been observed to be dominant. Solar wind plasma (SWP) parameters, inter-planetary magnetic field and various features at solar disk have also been studied. The amplitude remains low continuously for most of the days while the phase shifts to earlier hours. Occurrence of LAE is independent of the nature of interplanetary magnetic field (IMF).
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
A Hashim and T Thambyahpillai,Planet. Space Sci. (UK)17, 1889 (1969)
T Mathews, D Venkatesan and B G Wilson,J. Geophys. Res. (USA)74, 1218 (1969)
A G Ananth, S P Agrawal and U R Rao,12th Int. Cosmic Ray Conf. (Hobart, 1971) vol. 2, p. 651
D K Jadhav, M Shrivastava, A K Tiwari and P K Shrivastava,18th Int. Cosmic Ray Conf. (Bangalore, 1983) vol. 3, p. 337
H Mavromichalaki,Astrophys. Space Sci. 71, 101 (1980b)
M A Forman and L J Glesson,Astrophys. Space Sci. 32, 77 (1975)
H Mavromichalaki,Astrophys. Space Sci. 80, 59 (1979)
H Mavromichalaki,Astrophys. Space Sci. 68, 137 (1980a)
H Mavromichalaki,Earth, Moon and Planets 47, 61 (1989)
E N Parker,Planet. Space Sci. 12, 735 (1964)
W I Axford,Planet. Space Sci. 13, 115 (1965)
U R Rao, A G Ananth and S P Agrawal,Planet. Space Sci. 20, 1799 (1972)
R P Kane,J. Geophys. Res. 79, 64 (1974)
R P Kane,J. Geophys. Res. 80, 3509 (1975)
A J Owens and M M Kash,J. Geophys. Res. 81, 3471 (1976)
J R Jokipi,Rev. Geophys. Res. 81, 3471 (1971)
A G Ananth, S P Agrawal and U R Rao,Pramana — J. Phys. 3, 74 (1974)
S Kumar and M L Chauhan,Ind. J. Radio Space Phys. 25, 106 (1996)
S Kumar, M L Chauhan and S K Dubey,Solar Phys. 176, 403 (1997)
E N Parker,Interplanetary dynamical process (Wiley Interscience, New York, 1963)
I Sabbah,Can. J. Phys. 78, 293 (2000)
J W Sari, D Venkatesan, J J Lanzerotti and C G Maclennan,J. Geophys. Res. 83, 5139 (1978)
I Sabbah,J. Geophys. Res. 101, 2485 (1996)
A Hashim and M Bercovitch,Planet. Space Sci. 20, 791 (1972)
H Kananen, H Komori, P Tanskanen and J Oksman,17th Int. Cosmic Ray Conf. (Paris, 1981) vol. 10, p. 190
N R Sheeley, E T Swanson and T M Wang,J. Geophys. Res. 96, 861 (1991)
K Kondoh, N Hasebe, T Doke, J Kikuchi, M N Kobayashi, J Medina, J Sequeiros, T Takashima, T Yanagimachi and B Wilken,26th Int. Cosmic Ray Conf. (Utah, 1999) vol. 7, p. 179
S P Duggal and M A Pomerantz,15th Int. Cosmic Ray Conf. (Plodiv, 1977) vol. 4, p. 370
N Iucci, M Parisi, M Storini and G Villoressi,10th Int. Cosmic Ray Conf. (Tokyo, 1979) vol. 3, p. 491
K Fujimoto, Kojimatt and K Munakami,18th Int. Cosmic Ray Conf. (Bangalore, 1983) vol. 3, p. 267
Y Munakata, S Mori, J Y Ryu, S P Agrawal and D Venkatesan,20th Int. Cosmic Ray Conf. (Moscow (Russia), 1987) vol. 4, p. 39
N Iucci, M Parisi, M Storini and G Villoressi,Il. Nuovo Cimento C6, 145 (1983)
L I Dorman, N S Kaminer, A E Kuj’micheva and N V Mymrina,Geomagnetism and Aeronomy 24, 452 (1984)
H S Ahluwalia and J F Riker,Planet. Space Sci. 35, 39 (1987)
N Iucci, M Parisi, M Storini and G Villoressi,18th Int. Cosmic Ray Conf. (Bangalore, 1983a) vol. 3, p. 354
L I Dorman, N S Kamur, A E Kuj’micheva and N V Hymrina,Geomagnetism and Aeronomy 24, 554 (1985)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Mishra, R.K., Mishra, R.A. Unusually low-amplitude anisotropic wave-train events of cosmic ray intensity during 1981–1994. Pramana - J Phys 64, 197–206 (2005). https://doi.org/10.1007/BF02704874
Received:
Revised:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02704874