Harmonics of high-amplitude wave trains in cosmic ray intensity |
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| Authors: | Rajesh K Mishra Rekha Agarwal Mishra |
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| Institution: | a Computer and I.T. Section, Tropical Forest Research Institute, P.O.: RFRC, Mandla Road, Jabalpur (M.P.) 482 021, India
b Govt. Model Science College (Autonomous), Jabalpur (M.P.) 482 001, India |
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| Abstract: | Using the ground based neutron monitor data of Deep River, the high-amplitude anisotropic wave train events (HAE) in cosmic ray intensity have been investigated during the period 1991-1994. It has been observed that the phase of diurnal anisotropy for majority of HAE shifts towards later hours; whereas it remains in the corotational/18-h direction for some of the HAE cases. Further, for majority of HAE cases the amplitude of diurnal and semi-diurnal anisotropy significantly deviates from the annual average values. The phase of semi-diurnal and tri-diurnal anisotropy for all HAE cases has shifted to later hours. Furthermore, for tri-diurnal anisotropy the amplitude remains statistically the same. The occurrence of HAE is unaffected by the nature of the Bz component of IMF polarity. |
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| Keywords: | Cosmic ray Diurnal Semi-diurnal and anisotropy |
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