activity
20242026
most citedImproving constraints on the extended mass distribution in the Galactic Center with stellar orbits

48 citations · 70 across the 11 of their papers we have counts for

collaborators
Showing astro-ph.GAShow all

7 papers · 1 filter

astro-ph.GA2026

Dual and lensed AGN at sub-arcsecond separations uncovered by ERIS

M. V. Zanchettin, F. Mannucci, Q. D'Amato +62

We present the first results of the ongoing INAF GTO program focused on the search of sub-arcsecond dual AGN, carried out with the near-infrared integral-field unit SPIFFIER of the…

astro-ph.GA2026

Searching for Nearby Supermassive Black Hole Binaries with GRAVITY

GRAVITY Collaboration, K. Abd El Dayem, N. Aimar +82

We present a systematic interferometric search for close supermassive black hole (SMBH) binaries in 20 nearby type 1 active galactic nuclei (AGN) observed with VLTI/\grav. We inves…

astro-ph.GA2026

The first detection of dense gas in a massive main-sequence galaxy at cosmic noon

Jianhang Chen, Natascha M. Förster Schreiber, Rodrigo Herrera Camus +18

Dense gas is the direct fuel for star formation, but measuring it has long been difficult at z>2, especially in typical star-forming main-sequence galaxies. In this work, we report…

astro-ph.GA2025

BlackTHUNDER: Evidence of three massive black holes in a z~5 galaxy

Hannah Übler, Giovanni Mazzolari, Roberto Maiolino +41

We present observational evidence of three massive, accreting black holes (BHs) in the z=5.0167 galaxy J0148-4214 from JWST/NIRSpec-IFU spectroscopy. The BHs are revealed through b…

astro-ph.GA2025★ 6 cited

NOEMA: A first kpc resolution study of a main sequence barred galaxy channeling gas into a growing bulge

Stavros Pastras, Reinhard Genzel, Linda J. Tacconi +32

We present a very deep CO(3-2) observation of a massive, gas-rich, main sequence, barred spiral galaxy at . Our data were taken with the IRAM-NOEMA interferometer for…

astro-ph.GA2025★ 7 cited

Spectroastrometry and Reverberation Mapping of Active Galactic Nuclei. II. Measuring Geometric Distances and Black Hole Masses of Four Nearby Quasars

Yan-Rong Li, Jinyi Shangguan, Jian-Min Wang +35

The geometric distances of active galactic nuclei (AGNs) are challenging to measure because of their exceptionally compact structure yet vast cosmic distances. A combination of spe…

astro-ph.GA2024★ 48 cited

Improving constraints on the extended mass distribution in the Galactic Center with stellar orbits

The GRAVITY Collaboration, Karim Abd El Dayem, Roberto Abuter +66

Studying the orbital motion of stars around Sagittarius A* in the Galactic Center provides a unique opportunity to probe the gravitational potential near the supermassive black hol…