ABSTRACT The Galactic Center black hole Sagittarius A*(Sgr A*) is a prime observing
target for the Event Horizon Telescope (EHT), which can resolve the 1.3 mm emission from …

We analyze and report in detail new near-infrared (1.45–2.45 μm) observations of the Dusty
S-cluster Object (DSO/G2) during its approach to the black hole at the center of the Galaxy …

Context. The Dusty S-cluster Object (DSO/G2) orbiting the supermassive black hole (Sgr A*)
in the Galactic centre has been monitored in both near-infrared continuum and line …

We present 44 and 226 GHz observations of the Galactic Centre within 20 arcsec of Sgr A*.
Millimetre continuum emission at 226 GHz is detected from eight stars that have previously …

The neighborhood of the Galactic black hole boasts a plethora of extended interstellar gas
and dust features as well as populations of compact (unresolved, or marginally resolved) …

Infrared observations of the Galactic Centre (GC) provide a unique opportunity to study
stellar and bow-shock polarisation effects in a dusty environment. For the infrared …

For the past few years, we have observed the central half parsec of our Galaxy in the mid-
infrared from 2.8 to 5.1 μm. Our aim is to improve our understanding of the direct …

Based on the monitoring of the Dusty S-cluster Object (DSO/G2) during its closest approach
to the Galactic Center supermassive black hole in 2014 and 2015 with ESO VLT/SINFONI …

Bright Active Galactic Nuclei are powered by accretion of mass onto the super massive black
holes at the centers of the host galaxies. For fainter objects star formation may significantly …

ABSTRACT A radially directed flow of gaseous environment from a supermassive black hole
affects the evolution of a bow–shock that develops along the orbit of an object passing …