Near-infrared Interferometry Science with VLTI/GRAVITY


After five years of operation, the GRAVITY instrument has enabled a major step forward in infrared interferometry by its high spatial resolution and sensitivity. This talk will provide an overview of GRAVITY's technology and observation capabilities. I will highlight some revolutionary science results of the Galactic Center, exoplanet, and active galactic nuclei (AGNs). A particular focus will be on AGN broad-line region (BLR) science. The few micro-arcsecond differential spectro-astrometry resolution of GRAVITY provides critical constraints on BLR dynamics and the supermassive black hole (SMBH) mass. Combining GRAVITY with reverberation mapping observations, we aim to investigate the diversity of the BLR dynamics, including Keplerian, inflow, and outflow motion, as well as to discover SMBH binaries. I will end the presentation with an outlook on future GRAVITY+ observations of low and high redshift quasars and the synergies with surveys of the Chinese Space Station Telescope.

Jinyi Shangguan 上官晋沂 (MPE)
Zoom Meeting ID: 822 8287 7472 , Passcode: astroPKU , Link:
Tuesday, November 29, 2022 - 1:30PM to Tuesday, November 29, 2022 - 2:00PM