High-speed solar wind streams of two different origins and cosmic-ray variations during 1980–1986 |
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| Authors: | Pankaj K Shrivastava Ravindra P Shukla |
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| Institution: | (1) Physics Department, Government New Science College, 486001 Rewa (M.P.), India |
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| Abstract: | There are two types of high-speed solar wind streams classified in two categories:coronal-hole and solar-flare-generated streams. These two types are classified in two categories considering the bulk speed, proton density, temperature and magnetic field in the interplanetary medium. Their effects on cosmic ray intensity have been studied on a short-term basis during 1980–1986. Daily means of one middle and one low-latitude set of neutron monitor data have been taken for analysis using the Chree method of superposed epochs. The investigation indicates that the solar-flare-generated high-speed solar wind streams are more effective in producing cosmic ray decreases than are the coronal-hole generated streams. |
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