Conveners
Poster Session 9.3
- Istvan Ballai (University of Sheffield)
Using revised Bent Crystal Spectrometer instrument characteristics, we determined absolute abundances of calcium A(Ca) for 207 flares in their decay phases. The accuracy of abundance determination was the best ever achieved for hot (T > 5 MK) flaring plasma sources, amounting to only 1 - 3 percent for some flares. While the calcium abundance is constant during the decay phase for most cases,...
We present first results of our study to characterize the
dynamics of Alfvén waves in the solar corona. Using MHD
simulations, we study the propagation of
monochromatic Alfvén waves injected at the base of
the corona and quantify their characteristics higher up in
the corona. In particular, we investigate how different flux tube
geometries affect the properties of the waves.
Internal gravity waves are observed in the Earth's atmosphere and oceans, on Mars and Jupiter, and in the Sun's atmosphere. Despite ample evidence for propagating gravity waves in the Sun's atmosphere, we still do not fully understand their characteristics and overall role in the dynamics and energetics of the solar atmosphere. Here we present a new approach to study the propagation of gravity...
Coronal Mass Ejection (CME) driven shocks are considered to be one of the potential sites to accelerate charged particles. In-situ measurements of CMEs have shown enhancement of particle flux with energies much larger than that of thermal solar wind particles. Nevertheless, understanding such particle energization computationally has been challenging due to the presence of two widely separated...
Element abundance signatures have long been used as tracers of physical processes throughout astrophysics. Understanding the spatial and temporal variations in the composition of the solar corona provides insight into how matter and energy flow from the solar chromosphere out into the heliosphere. In this work, we investigate the spatial distribution of highly varying plasma...
