Peak star formation and black hole activity in young galaxies (Lovar / Twitter)</p><div><div>
reveal telescope European wireless “Louvre” today, Wednesday, through a series of studies on images with unprecedented accuracy for 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 activity 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 the astronomer at the Paris Observatory, Cyril Tass.
Proud to have worked with an international team of astronomers to create the most sensitive images of the Universe ever taken at low radio frequencies✨. The use of LOFAR reveals images of Milky Way like galaxies in the most distant parts of the Universe https://t.co/k5lz8tfoeD pic.twitter.com/DJWTuCZYqy
— Low Frequency Array (@LOFAR) April 7, 2021
Tass participated in the preparation of 14 studies based on the “Louvre” data set, which were published on Wednesday in a special issue of the specialized journal “Astronomy and Astrophysics”.
The telescope focused on a wide field of the northern sky, with an exposure time ten times longer than that which allowed it to create its first cosmic map in 2019.
Tass explained, “This provides more accurate results, such as a picture taken in the dark, as the longer the exposure period, the more difficult to see” objects can be distinguished. “We are witnessing a peak in star formation and black hole activity” in young galaxies, about three billion years after the Big Bang, likening that to “fireworks.”
And “Louvre” monitored this indirectly, through cosmic radiation – the energy released by the galaxy – that is accelerated by supernovae, that is, stars that explode when they die.
The astronomer said, “When the galaxy forms stars, many stars explode at the same time, which accelerates the particles of very high energy, 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 methods that allow obtaining information about the early stages of the universe.