Galactic Cosmic Rays Modulation Due to Solar-Interplanetary Activity

Abstract

Abstract
The Sun displays a multiple magnetic activities collectivity referred as solar activity. Galactic cosmic rays are subjected to heliospheric modulation under the influence of solar outputs and their variability. We observed relation between selected solar activity parameters and GCR variation. The observation based on data of Omniweb data centre for solar- interplanetary activity and monthly mean count rate of cosmic ray intensity from neutron monitor Oulu ( cutoff rigidity Rc=0.80 GV) during the period of 23/24 solar cycle .We observed a record high value of galactic cosmic ray intensity with low values of solar - interplanetary activity parameters during this minimum period of solar activity and also correlate count rate of cosmic ray intensity with solar activity parameters i.e. better anti-correlated.
Keywords: Cosmic ray intensity (CRI), Magnetic clouds (MCs), Coronal mass ejections (CMEs), Heliospheric magnetic field (HMF)

Cite this Article
B.K. Tiwari, B.R. Ghormare. Galactic cosmic rays modulation due to solar-interplanetary activity. Research & Reviews: Journal of Physics. 2015; 4(3): 23–26p