ESO’s VLTI images of stars at the centre of the Milky Way

These annotated images, obtained with the GRAVITY instrument on ESO’s Very Large Telescope Interferometer (VLTI) between March and July 2021, show stars orbiting very close to Sgr A*, the supermassive black hole at the heart of the Milky Way. One of these stars, named S29, was observed as it was making its closest approach to the black hole at 13 billion kilometres, just 90 times the distance between the Sun and Earth. Another star, named S300, was detected for the first time in the new VLTI observations.

To obtain the new images, the astronomers used a machine-learning technique, called Information Field Theory. They made a model of how the real sources may look, simulated how GRAVITY would see them, and compared this simulation with GRAVITY observations. This allowed them to find and track stars around Sagittarius A* with unparalleled depth and accuracy.

Mynd/Myndskeið:

ESO/GRAVITY collaboration

Um myndina

Auðkenni:eso2119a
Tegund:Háskóli
Útgáfudagur:Des 14, 2021, 16:00 CET
Tengdar fréttatilkynningar:eso2119
Stærð:4500 x 1842 px

Um fyrirbærið

Nafn:Sagittarius A*
Tegund:Milky Way : Galaxy : Component : Central Black Hole
Flokkur:Quasars and Black Holes

Myndasnið

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Litir og síur

TíðnisviðBylgjulengdSjónauki
Innrautt
K
2.2 μmVery Large Telescope Interferometer
GRAVITY