First photo of giant black hole in the Milky Way
The giant black hole called Sagittarius A* at the center of the Milky Way Galaxy has been photographed for the first time. An international organization called the Event Horizon Telescope (EHT) used the Very Long Base Interferometry (VLBI) system, which mimics an Earth-sized telescope and is set up with 8 radio antennas, to take the picture.
The photograph shows a dark region in which the black hole is located, surrounded by ring-shaped light emitted by high-temperature gases actuated by gravitational force.
Speaking to the BBC, one of the European partners of the EHT project, Prof. Heino Falcke said that Sagittarius A* is very special because it is a supermassive black hole.
From the EHT team, Dr. Ziri Younsi, on the other hand, explained that Sagittarius A* is dynamic, and the hot gases seen in the ring around it are moving. These gases move inside the black hole at a speed of 300,000 kilometers per second. In EHT 2019, he photographed a black hole in another galaxy called Messier 87, which is 55 million light-years from Earth.
Feryal Özel, Professor of Astrophysics at the University of Arizona, who is the first and only Turkish scientist accepted to NASA Hubble staff, made the presentation of the study. Özel stated that the black hole, which she describes as “the gentle giant in the center of the galaxy”, is named “Sagittarius A”, which is near the border of the constellations of Sagittarius and Scorpio, and is 4 million times larger than the Sun. Özel was among the 200 scientists who photographed the first black hole in 2019.