The magnetic field is the main driver of the spectacular activity of the solar atmosphere, which covers the photosphere, chromosphere, transition region, and corona. This is true also for many other stars, although it is in the Suns atmosphere where we can observe the consequences of the interaction between an astrophysical plasma and its magnetic

The TANNHAUSER project is a public-private collaboration initiative in which the Instituto de Astrofísica de Canarias (IAC) participates as a collaborating partner. Its main objective is to develop and integrate an advanced optical communications system into the Nasmyth platform of the Two-meter Twin Telescope (TTT), located at the Teide

Black holes (BHs) are the pinnacle of extreme gravity. They are responsible for the most violent phenomena observed in the Universe, from long gamma-ray bursts, tidal disruption events to gravitational waves (GW). Despite the recent growth in extragalactic BH discoveries by LIGO-VIRGO, our knowledge of the seed BH population is severely hindered by

This coordinated project focuses on the scientific preparations for the European Space Agency's PLATO mission, which aims to advance our knowledge of extrasolar planetary systems and their host stars by analysing planetary transits and by asteroseismic studies, based on high-precision light curves obtained by the mission. The project is part of a

Spectroscopy enables key physical insight in the study of exoplanets, stars, galaxies, and the interstellar and intergalactic media. Detailed spectroscopic studies of both bright and faint objects call for high dispersion at large telescopes to increase the photon-collecting area. High-resolution, high-stability spectroscopy is key for the precise

X-ray binaries (XRBs) are arguably the best sources for studying accretion and jets, because they traverse various accretion states with greatly differing jet strength, over timescales of the order of months, easily amenable to observation. Multi-wavelength variability data, combined with timing analysis techniques, provides information about the