A team of astronomers from the Leiden Observatory found a radio galaxy from times when the age of the universe was only 7% of the present. And it is located at a distance of 12 billion light years from Earth.
Radio galaxies are extremely rare objects in the universe. These are colossal galaxies with supermassive black holes in the center, which actively absorb gas and dust from the surrounding space. Such activity triggers high-energy rays, which can accelerate charged particles to near the speed of light. And such streams are easily fixed on radio waves.
The very fact that such galaxies exist surprised astronomers. Their discovery is extremely important for our understanding of how galaxies form and evolve. The study of similar objects can also shed light on the formation of black holes that have caused the formation and growth of galaxies.
A new discovery was made with the help of the Giant meter radio telescope in India, which originally identified a radio galaxy. The distance to it was then determined by measuring the redshift. Judging by the latter, the scientists fixed the galaxy in the state in which it was 12 billion years ago.
The measurement of the red shift told astronomers about the distance on which the galaxy is located. The further the galaxies are, the faster they move from us, and therefore the light from them seems more red due to the Doppler shift. Accordingly, the faster the galaxy moves from us, the stronger the red shift.
Previous long-range radio galaxies were recorded in 1999. Its redshift is 5.19, while for the new galaxy it is 5.72.