Conveners
Poster Session 2.4
- Francesca Zuccarello (Istituto Nazionale di Astrofisica (INAF))
Many processes in the solar atmosphere and in the solar wind require a kinetic description. Additionally the latest missions, SolO and PSP, provide new unique view of kinetic processes. We report here the approach of the Horizon 2020 project AIDA (www.aida-space.eu): using a combination of massively parallel kinetic particle in cell simulations and machine learning data mining. The study of...
Fast magnetic reconnection plays a fundamental role in driving explosive dynamics and heating in the solar chromosphere. The reconnection time scale of traditional models is shortened by the onset of the coalescence instability, which forms a turbulent reconnecting current sheet through plasmoid interaction. Non-equilibrium ionisation–recombination processes can significantly alter the time...
Coronal forbidden lines in the visible and near infrared (NIR) provide a range of plasma diagnostics to probe the solar corona.
They have not been explored much, but this is changing, with several facilities coming into operation, primarily DKIST.
We briefly review the importance of accurate atomic rates and proper modelling for these forbidden lines.
We provide examples of new...
The passage of comets in the solar corona can be a powerful tool to probe the local plasma properties. One such case is offered by Comet Lovejoy, which gives us the possibility to infer the coronal plasma density along the magnetic field lines intersected by the comet trajectory, thanks to the emission by cometary ions injected along the magnetic field, forming so-called striae.
Here, we...
Shock waves driven by Coronal mass ejections (CMEs) can accelerate particles. Radio signatures of electron beams accelerated at the shock front (type II bursts) are produced when the shock wave propagates through the solar atmosphere. Ground-based radio observations allow us to study shock waves in the low corona while space-based radio observations provide us the opportunity to track shock...
The Bent Crystal Spectrometer (BCS) observed high resolution spectra of flares between 1980 and 1989. The instument's channel 1 recorded the triplet of lines arising from He-like Ca (Ca XIX) together with several satellite lines formed from doubly excited states of the Ca XVIII ion. Portions of the continuum emitted by flares were also observed, free from instrumental effects (crystal...
During April, 2019, several groups of type III radio bursts were observed, starting from the metric wavelength range (ground based observations) and continuing in the hectometric to kilometric range (space based observations). A majority of the type III bursts was observed by LOFAR (Low Frequency Array), by radio instruments on Stereo A and Wind spacecraft, and also by the Parker Solar Probe...
