A new article hints at the existence of several black holes in the Hyades cluster -- the closest open cluster to our solar system -- which would make them the closest black holes to Earth ever detected.
hints at the existence of several black holes in the Hyades cluster -- the closest open cluster to our solar system -- which would make them the closest black holes to Earth ever detected.
For the published study, the team of astrophysicists used simulations that track the motion and evolution of all the stars in the Hyades -- located at a distance from the Sun of about 45 parsecs or 150 light-years -- to reproduce their current state. "Our simulations can only simultaneously match the mass and size of the Hyades if some black holes are present at the centre of the cluster today ," says Stefano Torniamenti, postdoctoral researcher at the University of Padua and first author of the paper.
In recent years, the breakthrough of the Gaia space telescope has made it possible for the first time to study the position and velocity of open cluster stars in detail and to identify individual stars with confidence.
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