6 papers
A comparative study of solar flux emergence and eruptivity in simulations of horizontal versus toroidal magnetic fields
Vaggelis Karantanis, Juxhin Zhuleku, Vasilis Archontis +1
Context: Magnetic flux emergence is a fundamental driver of eruptive activity in the solar atmosphere. While many numerical studies employed idealized horizontal flux tubes, toroid…
Polarity inversion line helicities and solar eruptivity
K. Moraitis, J. K. Thalmann
This work examines the relationship between solar eruptivity and the relative helicity that is contained around the polarity inversion line (PIL) of the magnetic field, along with…
Recurrent eruptions from the emergence of a toroidal flux tube
J. Zhuleku, V. Archontis, K. Moraitis
Solar eruptive behavior is often modeled with magnetohydrodynamic simulations of magnetic flux emergence. The usual geometry considered is that of a horizontal cylindrical magnetic…
Magnetic helicity and energy budgets of jet events from an emerging solar active region
A. Nindos, S. Patsourakos, K. Moraitis +4
Using photospheric vector magnetograms obtained by the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory and a magnetic connectivity-based method, we compute…
Energy and helicity evolution in a flux emergence simulation
K. Moraitis, V. Archontis, G. Chouliaras
Aims. The main aim of this work is to study the evolution of the recently introduced relative helicity of the magnetic polarity inversion line (PIL) in a magnetohydrodynamics simul…
On the use of relative field line helicity as an indicator for solar eruptivity
K. Moraitis, S. Patsourakos, A. Nindos +2
Context. Relative field line helicity (RFLH) is a recently developed quantity which can approximate the density of relative magnetic helicity. Aims. This paper aims to determine wh…