Conveners
Poster Session 8.3
- Georgia Tsiropoula (National Observatory of Athens)
Solar magneto-seismology (SMS) is a popular research area that involves the study of MHD waves and oscillations present in structures of the magnetized solar atmosphere. Magnetically confined features such as magnetic slabs or flux tubes are important aspects that have been studied in great detail for more than a decade. Inhomogeneities in the structuring of the magnetic field enables them to...
The solar wind is a stream of charged particles originating from the Sun and interacting` with Earth’s magnetic field. Any alterations in the solar wind affects Earth’s magnetic field and can cause geomagnetic storms. Thus, understanding the formation and acceleration of the solar wind is critical towards investigating the Sun-Earth connection and predicting space weather.
The solar...
We analyze the coronal elemental abundances during a small flare using Hinode/EIS observations. Compared to the preflare elemental abundances, we observed a strong increase in coronal abundance of Ca xiv 193.84 Å, an emission line with low first ionization potential (FIP < 10 eV), as quantified by the ratio Ca/Ar during the flare. This is in contrast to the unchanged abundance ratio observed...
We propose the new approach in which the elemental plasma composition can be determined simultaneously with the distribution of differential emission measure (DEM). For this purpose we use the differential evolution (DE) method. We investigate the abundances of K, Ar, S and Si and DEM distributions for the flare on 21 January 2003 observed by RESIK in the soft X-ray range. Before applying the...
The presence of multiple current sheets in reconnection environments is expected due to the inherent turbulence associated with it. A velocity shear in reconnection environments is also common due to the dynamic nature of the process. We have investigated the effect of a sub and super-Alfvenic velocity shear on the explosive phase of an “ideal” double tearing mode (DTM) within the 2D...
Simultaneous spectroscopic and imaging observations can provide deep insight into diagnostic parameters of the solar corona and help us to understand the dynamics and origin of coronal mass ejections(CMEs). Visible emission line coronagraph (VELC), a payload on-board Aditya-L1, will provide spectroscopic observations of the inner corona from 1.05 R$_\odot$ to 1.5 R$_\odot$ in pass-bands...
With the advent of modern compact radio interferometric arrays in metrewavebands, high fidelity snapshot spectroscopic imaging studies at sub -second and sub-MHz scales became possible. Murchison Widefield Array (MWA) operating in 80 - 240 MHz band is one such array. A recent study using MWA data of a radio burst source, associated with a microflare, discovered correlated quasi-periodic...
