The discovery of Sagittarius A* therefore also affects how we look at gravity, says Radboud PhD student Jesse Daas. ‘This black hole is a lot smaller than M87. So research into black holes is not just about the holes themselves, but also about how they communicate with the universe.’ ‘These black holes can pull focused beams of gas, that are millions of times heavier than the black hole itself, through the universe. In the universe, we have black holes that are quite similar to M87 and Sagittarius A*, Markoff explains. ‘As well as being fun to test Einstein’s general theory of relativity, this type of research also helps us to better understand the role of black holes in the universe.’ This is very important, says Sara Markoff, professor of Theoretical High Energy Astrophysics at the Anton Pannekoek Institute in Amsterdam.
‘For the first time in history, we are looking at the physics that takes place around the observation horizon of black holes.’ Impact Nevertheless, it is quite a step forward. Although the results remain an ‘incomplete assembly of separate photographs’, according to EHT director Huib van Langevelde of Leiden University. The findings presented today take the team a lot further in that direction. ‘These black holes can pull focused beams of gas, that are millions of times heavier than the black hole itself, through the universe’ ‘After M87, the question was whether this discovery was a strange coincidence or whether we could confirm that this is how it works for many more galaxies.’ ‘We already knew that black holes that function as the centre of galaxies had to exist,’ professor of Astroparticle Physics Heino Falcke explained on Wednesday afternoon at a specially convened meeting for journalists at Radboud University. Today, at several simultaneous press conferences, scientists from the same group are presenting their latest ground-breaking result: a photograph of the black hole in our own galaxy (see above). With the constructed photograph of black hole ‘M87′, black holes as predicted by Einstein’s theory of relativity became visible for the first time. In 2019, the team at Event Horizon Telescope (EHT) made headlines around the world. ‘Through this research, we can better understand the role of black holes in the universe.’ This time of Sagittarius A*, a black hole that is the centre of our own galaxy. Three years after the first photograph of a black hole, scientists of Event Horizon Telescope (EHT) presented a new photograph yesterday.
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