The Galactic centre supermassive black hole (SMBH), in sharp contrast with its complex
environment, is characterized by only three classical parameters–mass, spin, and electric …

The mechanism of thermal driving for launching mass outflows is interconnected with
classical thermal instability (TI). In a recent paper, we demonstrated that as a result of this …

For many years we have known that dust in the form of a dusty-molecular torus is
responsible for the obscuration in active galactic nuclei (AGN) at large viewing angles and …

The spectra of active galactic nuclei exhibit broad-emission lines that presumably originate
in the broad-line region (BLR) with gaseous-dusty clouds in a predominantly Keplerian …

Mid-infrared (MIR) images of the Galactic center show extended gas and dust features along
with bright infrared sources (IRS). Some of these dust features are a part of ionized clumpy …

We analyze the gas and dust emission in the immediate vicinity of the supermassive black
hole Sgr A* at the Galactic center (GC) with the ESO Very Large Telescope (Paranal/Chile) …

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 …

Warm absorber spectra contain bound-bound and bound-free absorption features seen in
the X-ray and UV spectra from many active galactic nuclei. The widths and centroid energies …

We report the detection of the far-infrared (FIR) fine-structure line of singly ionized
nitrogen,[N ii] 205 m, within the peak epoch of galaxy assembly, from a strongly lensed …

Motivated by the observations of several infrared-excess bow-shock sources and proplyd-
like objects near the Galactic Centre, we analyse the effect of a potential outflow from the …