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 …

Causes and consequences of magnetic complexity changes within interplanetary coronal mass ejections: A statistical study

C Scolini, RM Winslow, N Lugaz… - The Astrophysical …, 2022 - iopscience.iop.org
We present the first statistical analysis of complexity changes affecting the magnetic
structure of interplanetary coronal mass ejections (ICMEs), with the aim of answering the …

Dynamic time warping as a means of assessing solar wind time series

E Samara, B Laperre, R Kieokaew… - The Astrophysical …, 2022 - iopscience.iop.org
Over the last decades, international attempts have been made to develop realistic space
weather prediction tools aiming to forecast the conditions on the Sun and in the …

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⊙ …

Beyond basic drag in interplanetary CME modeling: Effects of solar wind pileup and high‐speed streams

C Kay, T Nieves‐Chinchilla, SJ Hofmeister… - Space …, 2022 - Wiley Online Library
Coronal mass ejections (CMEs) cause severe space weather effects throughout our solar
system. As a fast CME propagates through interplanetary space, it accumulates solar wind …

Exploring the radial evolution of interplanetary coronal mass ejections using EUHFORIA

C Scolini, S Dasso, L Rodriguez, AN Zhukov… - Astronomy & …, 2021 - aanda.org
Context. Coronal mass ejections (CMEs) are large-scale eruptions coming from the Sun and
transiting into interplanetary space. While it is widely known that they are major drivers of …

[HTML][HTML] Study of two interacting interplanetary coronal mass ejections encountered by Solar Orbiter during its first perihelion passage-Observations and modeling

D Telloni, C Scolini, C Möstl, GP Zank, LL Zhao… - Astronomy & …, 2021 - aanda.org
Context. Solar Orbiter, the new-generation mission dedicated to solar and heliospheric
exploration, was successfully launched on February 10, 2020, 04: 03 UTC from Cape …

Optimization of solar-wind speed models using interplanetary scintillation observations

M Tokumaru, K Fujiki, H Watanabe - Solar Physics, 2024 - Springer
Improvement of the model providing the boundary condition of the solar-wind speed near
the Sun is essential for gaining a better forecast of space weather. We optimized the …

Effects of mesh topology on MHD solution features in coronal simulations

M Brchnelova, F Zhang, P Leitner, B Perri… - Journal of Plasma …, 2022 - cambridge.org
Magnetohydrodynamic (MHD) simulations of the solar corona have become more popular
with the increased availability of computational power. Modern computational plasma codes …