Heliospheric Modulation of CRI Due to Solar Activity |
Author(s): |
| Dr. B. K. Tiwari , Department of Physics, A.P.S.University Rewa(M.P) |
Keywords: |
| Cosmic ray intensity (CRI), Interplanetary magnetic field (IMF), Solar magnetic field, sunspot number (SSN) |
Abstract |
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The main features of solar cycle 23, sun enters a period of intermediate and weak solar activity in terms of sunspot number. Based on the observation from Omniweb data centre for solar- interplanetary data , geomagnetic activity and monthly mean count rate of cosmic ray intensity (CRI) variation data from Oulu / Moscow/ Keil neutron monitors (Rc=0.80 GV , Rc=2.42 GV and Rc=2.29 GV,) during solar activity cycle 23 . The phase of minimum solar activity began in May 2005 and lasted for 4.5 years the unprecedented duration of the relative sunspot numbers falls. It is observed that the strength of the interplanetary magnetic field has been falling off to new low levels, and reduces the GCR entering inner- heliosphere and it is also found that SSN positive correlated with Kp and Ap and sunspot number, 10.7 cm solar radio flux, were inverse correlated with monthly mean count rate of cosmic ray intensity |
Other Details |
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Paper ID: IJSRDV2I7190 Published in: Volume : 2, Issue : 7 Publication Date: 01/10/2014 Page(s): 668-670 |
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