London / Pune: Astronomers have used an Indian telescope to detect the most remote radio galaxy ever known, located at a distance of 12 billion light years.
The galaxy from a time when the universe was only seven percent of its present age was found using the Giant Meter-Wave Radio Telescope (GMRT) in Pune.
The GMRT is a set of thirty fully controllable satellite radio telescopes with a diameter of 45 meters. It is run by the National Center for Radio Astrophysics.
The distance to this galaxy was then determined with the Gemini North Telescope in Hawaii and the Great Binoculars Telescope in Arizona.
The galaxies are perceived as it was when the universe was only one billion years old, according to the study published in the magazine Monthly Notices of the Royal Astronomical Society.
This also means that the light from this galaxy is almost 1
2 billion years old.
“It is very surprising how these galaxies have built up their mass in such a short time,” says Aayush Saxena of Leiden Observatory in the Netherlands.
“Bright radio axes have super massive black holes. It’s great to find such items so early in the history of the universe, the time for these super-massive black holes to be formed and grow must have been very short, “says Huub Rottgering, also from Leiden Observatory.
Radiogalaxes are very rare objects in un inverse. They are colossal galaxies with a super-massive black hole in their center that actively accents gas and dust from the surroundings.
This activity initiates the launch of high energy beam currents that can accelerate charged particles around the super massive black hole to almost the speed of light.
These rays are observed very clearly at radio wavelengths. The fact that such galaxies exist in the remote universe have surprised astronauts.