Context. Analysing the large-scale structure (LSS) in the Universe with galaxy surveys demands accurate structure formation models. Such models should ideally...
The Cosmological Optical Convergence: Extragalactic Background Light from TeV Gamma Rays
The intensity of the extragalactic background (EBL), the accumulated optical and infrared emissions since the first stars, is the subject of a decades-long...
The COSMOS-Web ring: In-depth characterization of an Einstein ring lensing system at z ∼ 2
Aims: We provide an in-depth analysis of the COSMOS-Web ring, an Einstein ring at z ≈ 2 that we serendipitously discovered during the data reduction of the...
The Counterjet of HH 30: New Light on Its Binary Driving Source
We present new [S II] images of the Herbig-Haro (HH) 30 jet and counterjet observed in 2006, 2007, and 2010 that, combined with previous data, allowed us to...
The coupled tearing-thermal instability in coronal current sheets from the linear to the non-linear stage
In the solar corona, magnetically sheared structures are unstable to both tearing and thermal instabilities in a coupled fashion. However, how the choice of...
The crowded magnetosphere of the post-common-envelope binary QS Virginis
We present high-speed photometry and high-resolution spectroscopy of the eclipsing post-common-envelope binary QS Virginis (QS Vir). Our Ultraviolet and Visual...
The cultural landscape ‘Risco caído and the sacred mountains of Gran Canaria: a paradigmatic proposal within UNESCO Astronomy and Wolrd Heritage initiative
The island of Gran canaria in the Canarian Archipelago is characterized by the presence of sanctuaries at the top of significant mountains and on the scarps of...
The curious activity in the nucleus of NGC 4151: jet interaction causing variability?
A key characteristic of many active galactic nuclei (AGNs) is their variability, but its origin is poorly understood, especially in the radio domain. Williams...
The curious case of 2MASS J15594729+4403595, an ultra-fast M2 dwarf with possible Rieger cycles
Context. RACE-OC (Rotation and ACtivity Evolution in Open Clusters) is a project aimed at characterising the rotational and magnetic activity properties of the...