The Galactic Center as a laboratory for theories of gravity and dark matter

M De Laurentis, I De Martino… - Reports on Progress in …, 2023 - iopscience.iop.org
Abstract The Galactic Center (GC) of the Milky Way, thanks to its proximity, allows to perform
astronomical observations that investigate physical phenomena at the edge of astrophysics …

S62 and S4711: Indications of a Population of Faint Fast-moving Stars inside the S2 Orbit—S4711 on a 7.6 yr Orbit around Sgr A

F Peißker, A Eckart, M Zajaček, B Ali… - The Astrophysical …, 2020 - iopscience.iop.org
We present high-pass filtered NACO and SINFONI images of the newly discovered stars
S4711–S4715 between 2004 and 2016. Our deep H+K-band (SINFONI) and K-band …

Merging binaries in the Galactic Center: the eccentric Kozai–Lidov mechanism with stellar evolution

AP Stephan, S Naoz, AM Ghez, G Witzel… - Monthly Notices of …, 2016 - academic.oup.com
Most, if not all, stars in the field are born in binary configurations or higher multiplicity
systems. In dense stellar environment such as the Galactic Center (GC), many stars are …

The evolution of circumstellar discs in the galactic centre: an application to the G-clouds

JE Owen, DNC Lin - Monthly Notices of the Royal Astronomical …, 2023 - academic.oup.com
ABSTRACT The Galactic Centre is known to have undergone a recent star formation
episode a few Myr ago, which likely produced many T Tauri stars hosting circumstellar discs …

A binary system in the S cluster close to the supermassive black hole Sagittarius A

F Peißker, M Zajaček, L Labadie, E Bordier… - Nature …, 2024 - nature.com
High-velocity stars and peculiar G objects orbit the central supermassive black hole (SMBH)
Sagittarius A*(Sgr A*). Together, the G objects and high-velocity stars constitute the S …

Persistent asymmetric structure of Sagittarius A* on event horizon scales

VL Fish, MD Johnson, SS Doeleman… - The Astrophysical …, 2016 - iopscience.iop.org
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 …

Kinematic Structure of the Galactic Center S Cluster

B Ali, D Paul, A Eckart, M Parsa, M Zajacek… - The Astrophysical …, 2020 - iopscience.iop.org
We present a detailed analysis of the kinematics of 112 stars that mostly comprise the high-
velocity S cluster and orbit the supermassive black hole Sgr A* at the center of the Milky …

Effect of electromagnetic interaction on galactic center flare components

A Tursunov, M Zajaček, A Eckart, M Kološ… - The Astrophysical …, 2020 - iopscience.iop.org
Recently, near-infrared GRAVITY@ ESO observations at 2.2 μm announced the detection of
three bright" flares" in the vicinity of the Galactic center supermassive black hole (SMBH) that …

Interpreting the long-term variability of the changing-look AGN Mrk 1018

S Veronese, C Vignali, P Severgnini… - Astronomy & …, 2024 - aanda.org
We present a comprehensive study of the changing-look active galactic nucleus (CL-AGN)
Mrk 1018 based on the largest dataset of optical, UV, and X-ray spectro-photometric data …

The Galactic Center: improved relative astrometry for velocities, accelerations, and orbits near the supermassive black hole

S Jia, JR Lu, S Sakai, AK Gautam, T Do… - The Astrophysical …, 2019 - iopscience.iop.org
We present improved relative astrometry for stars within the central half parsec of our
Galactic Center (GC) based on data obtained with the 10 m WM Keck Observatory from …