International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 02 | Feb 2024
p-ISSN: 2395-0072
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Analysis of high energy charge particle in the Heliosphere B. K. Tiwari1, B.R.Ghormare 2 1.Department of Physics,A.P.S.University, Rewa(M.P.) 2. Department of Physics, Rewa Engineering College, Rewa(M.P.) -----------------------------------------------------------------------------***-------------------------------------------------------------------------Abstract
Data-driven analysis of the temporal dependence in the Galactic Cosmic Rays flux is performed over the Solar Cycle 23-24. Solar wind disturbances and magnetic turbulence inside the heliosphere are affected GCRs, which effect is known as Solar Modulation . To investigate this event, GCR data collected with a global statistical inference on monthly basis, determined the dependence of the GCR diffusion parameters upon rigidity and time . In this paper, we discuss their interpretation in terms of basic processes of particle transport and their relations with the heliospheric plasma dynamics . The observation based on for solar- interplanetary activity through Omniweb data centre and monthly mean count rate of CRI data from neutron monitors (Moscow, Oulu,) for the this period . We observed high values of CR intensity with low values of solar-interplanetary activity indices during minimum phase of solar cycle 23-24. Statistical techniques are used to correlate data of CRI and solar- interplanetary indices , these were opposite correlated with solar activity indices. Keywords- , Solar Activity (SA), Galactic Cosmic Rays (GCRs), Coronal Mass Ejections (CME), Heliospheric magnetic Field (HMF)
Introduction Short-term as well as on long-term variations in Cosmic ray intensity are produced by Solar outputs and their modulation1,2 .Galactic Cosmic Rays modulation in Long-term basics were compared with the behavior of various solar activity indices and helioshperic parameters. It is observed that SSN, 10.7 cm Solar radio flux (SRF), Solar flares and CMEs are the causal link of Solar activity . Moreover, interplanetary plasma and field disturbances are associated with a variety of CMEs . Irregularities in the heliospheric magnetic field structure scattered Cosmic rays and , convection and adiabatic deceleration undergoes in the expanding solar wind changes in the heliospheric conditions as produced by the solar activity (SA)3,4 . Modulation in the cosmic ray is usually caused by transient interplanetary phenomenon , which are related to CMEs. The intensity of GCRs is subjected to changes in heliospheric conditions under the influence of Solar outputs and their variations. Scott.Forbush established the correlation between Geomagnetic storm and world-wide decreases in CRI 5. The Sunspot cycle ( ~ 11 years) in GCRs intensity and its variation are opposite in phase with Sunspot number and the transport of GCRs understood through the model of heliospheric magnetic field 6 . HMF magnitudes increases during high Solar activity due to larger number of CMEs ejected from the Sun (which occurs each ~11- years sunspot cycle). Therefore Solar Magnetic Field (SMF) more effective at sweeping Cosmic rays out of the inner heliosphere which causes a strong reduction in Cosmic rays fluxes and reproduce ~ 22 years Galactic Cosmic Rays modulation . The GCR modulated by sporadic emission of clouds of magnetized plasma in the Interplanetary space and produces terrestrial geomagnetic storms 7. Large decreases are associated with that MCs are preceding by shocks where as small decreases in GCRs are associated with Magnetic clouds (MCs) are not preceded by Shocks 8,9 . The IMF emanated from the Sun changes with changing variations in speed of particle, process of transport , such as convection, diffusion drift and adiabatic deceleration 10. Pressure and strength of Interplanetary Magnetic Field (IMF) and Solar wind (SW) density all are their lowest values and measured a record high GCR intensity and was associated with the relative decrease in anomalous cosmic rays, with energy about zero for low latitudes neutron monitors(NMs) during minimum phase of Solar cycle 23/24 11 . This period is interesting for the study of CRI modulation with Solar and Heliospheric conditions. Solar activity indices and Heliospheric parameters as, SSN and strength of the HMF was exceptionally low between minimum period of Solar cycle 23/24. Solar interplanetary activity parameters where significant different from the previous Solar minimum12,13 . This anomalous period shows unusual features in the GCR intensity are excess of the maximum intensity during 2009-2010.Heliospheric magnetic field was weaker, the Sun was much quieter, and observed higher CR diffusion coefficient, allows an increase in GCR intensity 14,15,16.
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