Abstract Details
| Name: Anil Raghav Affiliation: University of Mumbai, Mumbai Conference ID: ASI2019_386 Title : An identification of Alfven wave in shock sheath of coronal mass ejection at 1 AU Authors and Co-Authors : Anil Raghav and Zubair Shaikh Abstract Type : Oral Abstract Category : Sun and the Solar System Abstract : The dynamic evolution of coronal mass ejection (CME) in interplanetary space generates highly turbulent, compressed and heated shock-sheath. This region furnishes a unique environment to study the turbulent fluctuations at the small scales and serve an opportunity for unfolding the physical mechanisms by which the turbulence is dissipated and plasma is heated. How does the turbulence in the magnetized plasma controls the energy transport process in space and astrophysical plasma is an attractive and challenging open problem of 21st century. The literature discusses three types of incompressible magnetohydrodynamics (MHD) shocks as the magnetosonic (fast), Alfvénic (intermediate), and sonic (slow). The magnetosonic shock is most common in the interplanetary medium. However, Alfvénic shocks have not been identified till date in interplanetary space. Here, we demonstrate the presence of Alfvén waves turbulent shock-sheath at 1 AU. The Walén test is employed to confirm the presence of Alfvén wave. The study has strong implications in the domain of an interplanetary space plasma, its interaction with planetary plasma and astrophysical plasma. |