activity
19972026
most citedMonitoring stellar orbits around the Massive Black Hole in the Galactic Center

1.8k citations · 26k across the 301 of their papers we have counts for

collaborators

305 papers

astro-ph.CO2026

MATISSE in the era of GRAVITY+

Florentin Millour, Anthony Soulain, St{é}phane Lagarde +28

MATISSE, the mid-infrared spectro-interferometric imager of the Very Large Telescope Interferometer (VLTI), has been feeding on the light corrected by the GRAVITY+ Adaptive Optics…

astro-ph.GA2026

Improving constraints on the Yukawa correction at the Galactic Center with multiple stellar orbits

GRAVITY+ Collaboration, :, A. Foschi +78

We investigate the presence of a Yukawa-like correction () to Newtonian gravity at the Galactic Center, using a multi-star fitting code, including the newly…

astro-ph.IM2026

GRAVITY+: reducing non-common-path aberrations for sub-10 μas astrometric accuracy

Quentin Fournier, Guillaume Bourdarot, Frank Eisenhauer +26

GRAVITY is a state-of-the-art instrument for near-infrared astrometric interferometry that routinely achieves astrometric accuracy of 30-100 microarcsecond in its phase-referenced…

astro-ph.GA2026

Superdiffusion at the Galactic Centre

Pau Amaro Seoane, Kostas Tzanavaris, Reinhard Genzel +14

Tracking S-star cluster orbits around Sgr A* calibrates orbital transport models for space-borne gravitational wave detectors. Standard kinetic theories model this cluster via loca…

astro-ph.IM2026

Towards an Extended VLTI: Turbulence Characterization for Kilometer-Scale Optical Links at Paranal

B. Neichel, T. Pichon, G. Bourdarot +10

Future extensions of the VLTI aim to push infrared interferometry toward kilometer scale baselines, enabling angular resolutions of a few tens of micro-arcseconds. A first step wou…

astro-ph.GA2026

Stellar rotation of S301 as a macroscopic gyroscope to test general relativity

Pau Amaro Seoane, Xian Chen, Alejandro Torres-Orjuela +16

Stellar trajectories around the Galactic Center provide a testing environment for general relativity. The intrinsic rotation of these stars evolves under covariant transport in cur…