activity
20202026
most citedThe mass distribution in the Galactic Centre from interferometric astrometry of multiple stellar orbits

287 citations · 966 across the 17 of their papers we have counts for

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Showing astro-ph.GAShow all

10 papers · 1 filter

astro-ph.GA2025★ 1 cited

The gas streamer G1-2-3 in the Galactic Center

S. Gillessen, F. Eisenhauer, J. Cuadra +61

The black hole in the Galactic Center, Sgr A*, is prototypical for ultra-low-fed galactic nuclei. The discovery of a hand-full of gas clumps in the realm of a few Earth masses in i…

astro-ph.GA2023★ 37 cited

Using the motion of S2 to constrain scalar clouds around SgrA*

GRAVITY Collaboration, A. Foschi, R. Abuter +67

The motion of S2, one of the stars closest to the Galactic Centre, has been measured accurately and used to study the compact object at the centre of the Milky Way. It is commonly…

astro-ph.GA2023★ 1 cited

GMP-selected dual and lensed AGNs: selection function and classification based on near-IR colors and resolved spectra from VLT/ERIS, KECK/OSIRIS, and LBT/LUCI

F. Mannucci, M. Scialpi, A. Ciurlo +44

The Gaia-Multi-Peak (GMP) technique can be used to identify large numbers of dual or lensed AGN candidates at sub-arcsec separation, allowing us to study both multiple SMBHs in the…

astro-ph.GA2023★ 34 cited

Where intermediate-mass black holes could hide in the Galactic Centre: A full parameter study with the S2 orbit

The GRAVITY Collaboration, O. Straub, M. Bauböck +59

In the Milky Way the central massive black hole, SgrA*, coexists with a compact nuclear star cluster that contains a sub-parsec concentration of fast-moving young stars called S-st…

astro-ph.GA2023★ 3 cited

Accelerations of stars in central 2-7 arcsec from Sgr A*

A. Young, S. Gillessen, T. de Zeeuw +10

This work presents the results from extending the long-term monitoring program of stellar motions within the Galactic Center to include stars with separations of 2 - 7 arcseconds f…

astro-ph.GA2021★ 287 cited

The mass distribution in the Galactic Centre from interferometric astrometry of multiple stellar orbits

GRAVITY Collaboration, R. Abuter, N. Aimar +62

The stars orbiting the compact radio source Sgr A* in the Galactic Centre are precision probes of the gravitational field around the closest massive black hole. In addition to adap…

astro-ph.GA2021★ 35 cited

Deep Images of the Galactic Center with GRAVITY

GRAVITY Collaboration, R. Abuter, N. Aimar +65

Stellar orbits at the Galactic Center provide a very clean probe of the gravitational potential of the supermassive black hole. They can be studied with unique precision, beyond th…

astro-ph.GA2021★ 192 cited

Improved GRAVITY astrometric accuracy from modeling of optical aberrations

GRAVITY Collaboration, R. Abuter, A. Amorim +60

The GRAVITY instrument on the ESO VLTI pioneers the field of high-precision near-infrared interferometry by providing astrometry at the as level. Measurements at such…

astro-ph.GA2020★ 37 cited

Detection of faint stars near SgrA* with GRAVITY

GRAVITY Collaboration, R. Abuter, A. Amorim +58

The spin of the supermassive black hole that resides at the Galactic Centre can in principle be measured by accurate measurements of the orbits of stars that are much closer to Sgr…

astro-ph.GA2020★ 60 cited

The Flux Distribution of Sgr A*

The GRAVITY Collaboration, R. Abuter, A. Amorim +54

The Galactic Center black hole Sagittarius A* is a variable NIR source that exhibits bright flux excursions called flares. The low-flux density turnover of the flux distribution is…