Multi-scale variability of coronal loops set by thermal non-equilibrium and instability as a probe for coronal heating

P Antolin, C Froment - Frontiers in Astronomy and Space Sciences, 2022 - frontiersin.org
Solar coronal loops are the building blocks of the solar corona. These dynamic structures
are shaped by the magnetic field that expands into the solar atmosphere. They can be …

[HTML][HTML] Wave modeling of the solar wind

L Ofman - Living Reviews in Solar Physics, 2010 - Springer
The acceleration and heating of the solar wind have been studied for decades using satellite
observations and models. However, the exact mechanism that leads to solar wind heating …

CHIANTI–an atomic database for emission lines-IX. Ionization rates, recombination rates, ionization equilibria for the elements hydrogen through zinc and updated …

KP Dere, E Landi, PR Young, G Del Zanna… - Astronomy & …, 2009 - aanda.org
Aims. The goal of the CHIANTI atomic database is to provide a set of atomic data for the
interpretation of astrophysical spectra emitted by collisionally dominated, high temperature …

Magnetohydrodynamic turbulence formation in solar flares: 3D simulation and synthetic observations

W Ruan, L Yan, R Keppens - The Astrophysical Journal, 2023 - iopscience.iop.org
Turbulent plasma motion is common in the universe and invoked in solar flares to drive
effective acceleration leading to high-energy electrons. Unresolved mass motions are …

Coronal rain in randomly heated arcades

X Li, R Keppens, Y Zhou - The Astrophysical Journal, 2022 - iopscience.iop.org
Adopting the MPI-AMRVAC code, we present a 2.5-dimensional magnetohydrodynamic
simulation, which includes thermal conduction and radiative cooling, to investigate the …

3D coupled tearing-thermal evolution in solar current sheets

S Sen, J Jenkins, R Keppens - Astronomy & Astrophysics, 2023 - aanda.org
Context. The tearing instability plays a major role in the disruption of current sheets, whereas
thermal modes can be responsible for condensation phenomena (forming prominences and …

Thermally enhanced tearing in solar current sheets: Explosive reconnection with plasmoid-trapped condensations

S Sen, R Keppens - Astronomy & Astrophysics, 2022 - aanda.org
Context. Thermal instability plays a major role in condensation phenomena in the solar
corona (eg, for coronal rain and prominence formation). In flare-relevant current sheets …

Formation of solar filaments by steady and nonsteady chromospheric heating

C Xia, PF Chen, R Keppens… - The Astrophysical …, 2011 - iopscience.iop.org
It has been established that cold plasma condensations can form in a magnetic loop subject
to localized heating of its footpoints. In this paper, we use grid-adaptive numerical …

Effect of optically thin cooling curves on condensation formation: Case study using thermal instability

J Hermans, R Keppens - Astronomy & Astrophysics, 2021 - aanda.org
Context. Non-gravitationally induced condensations are observed in many astrophysical
environments. In solar physics, common phenomena are coronal rain and prominences …

Thermal stability of magnetohydrodynamic modes in homogeneous plasmas

N Claes, R Keppens - Astronomy & Astrophysics, 2019 - aanda.org
Context. Thermal instabilities give rise to condensations in the solar corona, and are the
most probable scenario for coronal rain and prominence formation. We revisit the original …