A paper published in the journal Monthly Notices of the Royal Astronomical Society 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.
Specifically, the finding took place during a research stay of the expert Stefano Torniamenti at the ICCUB, one of the research units that make up the IEEC.Since their discovery, black holes have been one of the most mysterious and fascinating phenomena in the universe and have become the object of study for researchers all over the world. This is particularly true for small black holes because they have been observed during the detection of gravitational waves.
Open clusters are loosely bound groups of hundreds of stars that share certain properties such as age and chemical characteristics. Thewere compared with the actual positions and velocities of the stars in the Hyades, which are now known precisely from observations made by the European Space Agency's Gaia satellite.
The observed properties of the Hyades are best reproduced by simulations with two or three black holes at present, although simulations where all the black holes have been ejected can still give a good match, because the evolution of the cluster could not erase the traces of its previous black hole population.
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