Open access
Aug 2026
Discovery of a star sensitive to the spin of Sagittarius A*
Residing in the centre of the Milky Way, Sagittarius A* (Sgr A*) is the closest massive black hole1 (MBH). Its vicinity has allowed measuring individual stellar orbits around it2, 3–4. The stars act as test particles and probe the gravitational potential around the 4.3 × 106M⊙ MBH. These observations have determined th...
K. A. El Dayem, R. Abuter, N. Aimar et al.
· Nature · 1 citation