Discover the fastest star in the Milky Way: travels at 25,000 km / s near a black hole
In the next 10 years, the team expects to achieve what would be the first direct measurement of the rotation of a black hole. "Without this star, we would have..
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Summary
They discover in Chile the fastest star in the Milky Way: they travel at 25,000 kilometers per second around a black hole. Scientists first observed S301 in spring 2023 and then followed it to determine its orbit. "The special thing about this star is that it orbits Sagittarius A * in a very closed orbit, taking only 8.7 years to complete it, and it approaches the black hole just 12 times the distance from Earth to Sun. The VLTI combines the light of four eight-meter telescopes to create a "virtual telescope" whose spatial resolution is 15 times higher than that of a single eight-meter telescope.
Furthermore, "Because it orbits so close to Sagittarius A, S301 opens a new window to study the fundamental properties of space - time in this extreme environment of black holes," explains Genzel, co-awarded in 2020 with the Nobel of Physics for the discovery of the central black hole of the Milky Way. Astronomers will continue to observe S301, which will make its next step through the nearest point to the black hole in 2031. This star, called S301 and detected from the Paranal Observatory in northern Chile, could in a decade determine the rotation of the black hole and test Albert Einstein's theory of space-time, as the scientists responsible for the finding, published in Nature magazine, foresee.
In addition, The observation of at least two of its complete orbits could make it possible to determine its trajectory with sufficient precision to measure the rotation of Sagittarius A *.
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They discover in Chile the fastest star in the Milky Way: they travel at 25,000 kilometers per second around a black hole.
reliability low1/2 sourcesScientists first observed S301 in spring 2023 and then followed it to determine its orbit. "The special thing about this star is that it orbits Sagittarius A * in a very closed orbit, taking only 8.7 years to complete it, and it approaches the black hole just 12 times the distance from Earth to Sun.
reliability low1/2 sourcesThe VLTI combines the light of four eight-meter telescopes to create a "virtual telescope" whose spatial resolution is 15 times higher than that of a single eight-meter telescope.
reliability low1/2 sources"Because it orbits so close to Sagittarius A, S301 opens a new window to study the fundamental properties of space - time in this extreme environment of black holes," explains Genzel, co-awarded in 2020 with the Nobel of Physics for the discovery of the central black hole of the Milky Way.
reliability low1/2 sourcesAstronomers will continue to observe S301, which will make its next step through the nearest point to the black hole in 2031.
reliability low1/2 sourcesThis star, called S301 and detected from the Paranal Observatory in northern Chile, could in a decade determine the rotation of the black hole and test Albert Einstein's theory of space-time, as the scientists responsible for the finding, published in Nature magazine, foresee.
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The observation of at least two of its complete orbits could make it possible to determine its trajectory with sufficient precision to measure the rotation of Sagittarius A *.
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