Optical/IR flux fading rapidly in GX 339-4: OIR jet quenching
The transient black hole candidate GX 339-4 is currently softening in X-ray, making a transition out of the hard state (ATel #2545). We are monitoring the...
Orphan optical flare as SOSS emission afterglow, localization in time
We report on MASTER optical observations of an afterglow-like optical and X-ray transient AT2021lfa/ZTF21aayokph. We detected the initial steady brightening of...
Phase-dependent Study of Near-infrared Disk Emission Lines in LB-1
The mass, origin, and evolutionary stage of the binary system LB-1 have been intensely debated, following the claim that it hosts an ∼70M ☉ black hole, in stark...
Probing the early Universe with gravitational Wave Background
We will review both theoretical and obsevational aspects of gravitational wave backgrounds of cosmological origin. We will present a classifcation of...
Properties of OB star-black hole systems derived from detailed binary evolution models
Context. The recent gravitational wave measurements have demonstrated the existence of stellar mass black hole binaries. It is essential for our understanding...
Quiescent NIR and optical counterparts to candidate black hole X-ray binaries
We present near-infrared and optical imaging of 15 candidate black hole X-ray binaries. In addition to quiescent observations for all sources, we also observed...
Following the detection of renewed activity in H1743-322 with Swift/BAT (Krimm et al., ATEL #2058), we triggered radio observations of the source using the VLA...
RAFFAELLA MORGANTI: “La primera imagen de un agujero negro ha sido un hito muy importante para la Astrofísica"
La Radioastronomía es una de las ramas de la Astrofísica observacional que ha experimentado un mayor crecimiento en los últimos años. Para estudiar el Universo...