activity
20242026
collaborators

5 papers

astro-ph.EP2026

Modelling solar radial velocities and photometric variability with SOAPv4

Alba Barka, Eduardo Cristo, Ângela R. G. Santos +5

Stellar activity remains one of the main limitations in the detection of Earth-like planets using radial velocity (RV) measurements. The Sun, as the only star for which surface fea…

astro-ph.SR2026

A New Multi-Constraint Potential Field Source Surface (PFSS) Extrapolation Model

C. Antonio, I. Chifu, R. Gafeira +1

The Potential Field Source Surface (PFSS) model is the most used approach for extrapolating the global coronal magnetic field, offering efficiency and strong performance at large s…

astro-ph.SR2025

Magnetic braking and dynamo evolution of Hydri

A. R. G. Santos, T. S. Metcalfe, O. Kochukhov +3

The evolution of magnetic braking and dynamo processes in subgiant stars is essential for understanding how these stars lose angular momentum. We investigate the magnetic braking a…

astro-ph.SR2024

The Sun at millimeter wavelengths V. Magnetohydrodynamic waves in a fibrillar structure

Maryam Saberi, Shahin Jafarzadeh, Sven Wedemeyer +4

Magnetohydrodynamic (MHD) waves, playing a crucial role in transporting energy through the solar atmosphere, manifest in various chromospheric structures. Here, we investigated MHD…

astro-ph.SR2024

Sausage, kink, and fluting MHD wave modes identified in solar magnetic pores by Solar Orbiter/PHI

S. Jafarzadeh, L. A. C. Schiavo, V. Fedun +25

Solar pores are intense concentrations of magnetic flux that emerge through the Sun's photosphere. When compared to sunspots, they are much smaller in diameter and hence can be imp…