COCONUT, a novel fast-converging MHD model for solar corona simulations: I. Benchmarking and optimization of polytropic solutions

B Perri, P Leitner, M Brchnelova… - The Astrophysical …, 2022 - iopscience.iop.org
We present a novel global 3D coronal MHD model called COCONUT, polytropic in its first
stage and based on a time-implicit backward Euler scheme. Our model boosts run-time …

COCONUT, a Novel Fast-converging MHD Model for Solar Corona Simulations. II. Assessing the Impact of the Input Magnetic Map on Space-weather Forecasting at …

B Perri, B Kuźma, M Brchnelova… - The Astrophysical …, 2023 - iopscience.iop.org
This paper is dedicated to the new implicit unstructured coronal code COCONUT, which
aims at providing fast and accurate inputs for space-weather forecasting as an alternative to …

COCONUT, a novel fast-converging MHD model for solar corona simulations. III. Impact of the preprocessing of the magnetic map on the modeling of the solar cycle …

B Kuźma, M Brchnelova, B Perri… - The Astrophysical …, 2023 - iopscience.iop.org
We developed a novel global coronal COCONUT (Coolfluid Corona Unstructured) model
based on the COOLFluiD code. The steady-state model is predetermined by magnetograms …

Self-consistent propagation of flux ropes in realistic coronal simulations

L Linan, F Regnault, B Perri, M Brchnelova… - Astronomy & …, 2023 - aanda.org
Context. The text has been edited to adhere to American English based on the spelling style
used in the text. In order to anticipate the geoeffectiveness of coronal mass ejections …

To E or not to E: numerical nuances of global coronal models

M Brchnelova, B Kuźma, B Perri, A Lani… - The Astrophysical …, 2022 - iopscience.iop.org
In recent years, global coronal models have experienced an ongoing increase in popularity
as tools for forecasting solar weather. Within the domain of up to 21.5 R⊙ …

Constraining global coronal models with multiple independent observables

ST Badman, DH Brooks, N Poirier… - The Astrophysical …, 2022 - iopscience.iop.org
Global coronal models seek to produce an accurate physical representation of the Sun's
atmosphere that can be used, for example, to drive space-weather models. Assessing their …

A comparison of global magnetofrictional simulations of the 2015 March 20 solar eclipse

DH Mackay, LA Upton - The Astrophysical Journal, 2022 - iopscience.iop.org
The solar corona exhibits a wide range of phenomena, from highly non-potential objects
such as solar filaments to near-potential structures such as the open magnetic flux. For any …

[PDF][PDF] Impact of far-side structures observed by Solar Orbiter on coronal and heliospheric wind simulations

B Perri, A Finley, V Réville, S Parenti, AS Brun… - Astronomy & …, 2024 - aanda.org
Solar Orbiter is a new space observatory that provides unique capabilities to understand the
heliosphere. In particular, it has made several observations of the far-side of the Sun and …

Total Solar Eclipse White-light Images as a Benchmark for Potential Field Source Surface Coronal Magnetic Field Models: An In-depth Analysis over a Solar Cycle

LF Benavitz, B Boe, SR Habbal - The Astrophysical Journal, 2024 - iopscience.iop.org
Potential field source surface (PFSS) models are widely used to simulate coronal magnetic
fields. PFSS models use the observed photospheric magnetic field as the inner boundary …

The Sun's Non-Potential Corona over Solar Cycle 24

AR Yeates - Solar Physics, 2024 - Springer
The global magnetic field in the solar corona is known to contain free magnetic energy and
magnetic helicity above that of a current-free (potential) state. But the strength of this non …