| Name: | Subhash Chandra Kaushik |
| Affiliation: | Government PG College, Datia, 475661, Bharat |
| Conference ID : | ASI2024_1031 |
| Title : | Transient Plasma in Space Weather in Connection with Associated GLEs and Forbush Decreases |
| Authors : | Subhash Chandra Kaushik |
| Authors Affiliation: | Department of Physics and Computer Science
Government PG College, Datia, 475661, Bharat |
| Mode of Presentation: | Poster |
| Abstract Category : | Sun, Solar System, Exoplanets, and Astrobiology |
| Abstract : | The kind of interaction between solar wind and terrestrial magnetosphere depends up
on the plasma structures present in the solar wind. This interaction builds a chain of activities
on the geo- magnetic environment. However the intensity of these activities depends up on
the orientation and the strength of IMF Bz embedded within the solar wind. One such plasma
structure is a magnetic cloud identified by its unique and measurable features. It is a kind of
large scale interplanetary solar wind plasma structure resulted as a transient ejection of the
solar plasma in the solar wind. Its characteristics were first time reported in 1981 by a group
of scientists, who have studied the solar wind ejection with the help of several satellites data
simultaneously. Present study deals with the behaviour of these interplanetary magnetic
clouds and the behavior of ground level enhancement events (GLEs) as well as studying the
Forbush decrease events simultaneously. We studied these events during the phase of highly
intense or ultra-intense geomagnetic field perturbations. We have utilized the IMF and Solar
data provided by Omniweb-NASA and the geomagnetic data obtained through
magnetometers, measured and provided by WDC Kyoto. Our results indicate that energetic
particles coming from deep surface interact with these abnormal solar and IP conditions
(Magnetic clouds) and suffer modulation effects. It is found that AP and AE indices show
rise before the forward turnings of IMF, while the Dst index depicts a classic storm time
decrease. The analysis indicates that the magnitude of all the responses depends on BZ
component of IMF being well correlated with solar maximum and minimum periods. |
