The European “Louvre” radio telescope revealed, on Wednesday, through a series of studies, images of unprecedented accuracy of tens of thousands of galaxies that form stars (or stellar nursery galaxies) in what is called the “young” universe.
This is the second time that data is available from this network, which includes about 70 thousand antennas distributed in ten European countries, that detect particles moving at speeds close to the speed of light, accelerated by events such as explosions of stars or collision of galaxy clusters or the activity of black holes.
“The scientific basis for the project is to study the formation of galaxies and the work of black holes in their midst,” explained astronomer at the Paris Observatory, Cyril Tass.
Tass participated in preparing 14 studies that were based on the “Louvre” data set, which were published on Wednesday in a special issue of the specialized journal “Astronomics and Astrophysics”.
The telescope focused on a wide field of northern sky, with an exposure time ten times longer than that which allowed it to create its first cosmic map in 2019.
“This provides more accurate results, such as a picture taken in the dark,” Tass said. The longer the exposure, the more difficult-to-see objects can be distinguished.
He added, “We are witnessing a peak in star formation and black hole activity” in young galaxies, about three billion years after the Big Bang, comparing that to “fireworks.”
And “Louvre” monitored this indirectly, through cosmic radiation (the energy released by the galaxy), which is accelerated by supernovae. Which stars explode when they die.
The astronomer added that “when the galaxy forms stars, many stars explode at the same time, which accelerates the very high-energy particles, and galaxies begin to radiate” in this range of radio waves that “Louvre” observed.
It is assumed that this data, along with those collected by other means to observe the sky, visually or in the x-ray and infrared ranges, should allow a better understanding of the evolution of the universe, pending the launch of new wireless means that allow obtaining information about the early stages of the universe.