activity
20012021
most citedImproved GRAVITY astrometric accuracy from modeling of optical aberrations

192 citations · 784 across the 13 of their papers we have counts for

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Showing 2021Show all

10 papers · 1 filter

astro-ph.HE2021

Flaremodel: An open-source Python package for one-zone numerical modelling of synchrotron sources

Y. Dallilar, S. von Fellenberg, M. Bauböck +13

Synchrotron processes, the radiative processes associated with the interaction of energetic charged particles with magnetic field, are of interest in many areas in astronomy, from…

astro-ph.EP2021★ 86 cited

The mass of Beta Pictoris c from Beta Pictoris b orbital motion

S. Lacour, J. J. Wang, L. Rodet +96

We aim to demonstrate that the presence and mass of an exoplanet can now be effectively derived from the astrometry of another exoplanet. We combined previous astrometry of Pic…

astro-ph.GA2021

A geometric distance to the supermassive black Hole of NGC 3783

GRAVITY Collaboration, A. Amorim, M. Bauböck +45

The angular size of the broad line region (BLR) of the nearby active galactic nucleus (AGN) NGC 3783 has been spatially resolved by recent observations with VLTI/GRAVITY. A reverbe…

astro-ph.HE2021★ 64 cited

Constraining particle acceleration in Sgr A* with simultaneous GRAVITY, Spitzer, NuSTAR and Chandra observations

R. Abuter, A. Amorim, M. Bauböck +81

We report the time-resolved spectral analysis of a bright near-infrared and moderate X-ray flare of Sgr A*. We obtained light curves in the -, -, and -bands in the mid- an…

astro-ph.EP2021★ 27 cited

GRAVITY K-band spectroscopy of HD 206893 B: brown dwarf or exoplanet

J. Kammerer, S. Lacour, T. Stolker +94

We aim to reveal the nature of the reddest known substellar companion HD 206893 B by studying its near-infrared colors and spectral morphology and by investigating its orbital moti…

astro-ph.SR2021★ 4 cited

MOLsphere and pulsations of the Galactic Center's red supergiant GCIRS 7 from VLTI/GRAVITY

GRAVITY Collaboration, G. Rodríguez-Coira, T. Paumard +55

GCIRS 7, the brightest star in the Galactic central parsec, formed Myr ago together with dozens of massive stars in a disk orbiting the central black-hole. It has been argu…