Projects

Coronal mass ejections (CMEs) are considered to be one of the main drivers of space weather. They consist of large-scale eruptions of magnetised plasma, originating predominantly from active regions in the low solar corona and are extremely common events. During solar maxima, they occur on a daily basis, at times exceeding 10 events per day. CMEs can affect space missions and when they propagate towards Earth and interact with the ...

Coronal Mass Ejections (CMEs) are huge expulsions of ionised gas, called plasma, from the atmosphere of the Sun into the interplanetary (IP) medium. At times, they propagate toward the Earth, eventually resulting in hazardous space weather conditions. Therefore, being able to forecast both the CME initiations and their trajectories is of crucial relevance for all space-born and ground-based systems that are affected by the space weather. ...

Since the advent of the Space Age, our society has become more and more susceptible to the conditions of the near-Earth space, which is primarily shaped by solar activity. Coronal mass ejections (CMEs) are the most energetic and largest scale solar eruptions and are the main drivers of severe space weather disturbances at Earth. When launched in rapid succession, CMEs can interact during propagation through interplanetary space, undergoing ...

The overarching goal of this project is to develop an innovative multi-scale approach for simulating the transport and conversion of vast amounts of energies in different forms within the solar atmosphere, by combining novel self-consistent multi-fluid models with pioneering integrated adaptive procedures. The resulting simulation model will allow for a dynamic adaptation of both the physico-chemical models and the computational mesh in ...

'Space weather' refers to the complex effects of the radiation and the plasma stream from the Sun on our space environment and Earth, our technological systems, our climate and the people. From a socio-economic perspective, the solar eruptions and especially the magnetic plasma clouds – the coronal mass ejections (CMEs) – associated to them, are the most important drivers of the space weather. 'Coronal Mass Ejections' (CMEs) consist of large ...

We begin our study by numerically investigating the influence of different triggering motions on the initiation of two consecutive CMEs. We find that changes within 1% in the shearing speed result in three different scenarios for the second CME, although the preceding eruption seems unaffected by such small variations. We thus obtain as second ejection a failed eruption, a stealth ejecta, or a CME driven by the imposed shear. We also compare ...

Huge eruptions regularly take place on the sun, spewing gigantic clouds of hot plasma into space. These plasma clouds, also known as coronal mass ejections (CMEs), drive shock waves that act as powerful accelerators of charged particles, commonly referred to as solar energy particles (SEPs). When SEPs strike our planet, they disrupt navigation satellites and endanger the lives of astronauts among other effects. It is therefore crucial to ...

Prominences are found as cool and dense plasma clouds, magnetically suspended in the hot and tenuous solar corona. Their compound plasma state, small-scale dynamics, and large-scale stability are still puzzling for modern plasma physics. In the end of their lives, prominences most probably erupt into interplanetary space causing a coronal mass ejection (CME) which may have severe impacts on the terrestrial space environment and human life on ...