A team of more than 200 astronomers from 18 countries has concluded that the Universe has new members: thanks to the low frequency Frequency Array (LOFAR) sensors network, it has found some 300,000 radio sources that correspond to distant galaxies, Publishes Astronomy & Astrophysics magazine.
This is a first step to obtain information about black holes and how the galaxy clusters evolve, as these specialists have only inspected the 2% of the space and they estimate that they could find about 15 million cosmic radio sources.
"We hope to answer a fascinating question: where black holes come from?", Which are "rather disordered dining rooms" and that, "when the gas falls on them, they emit jets of material that can be seen in the wavelengths of radio, "said Huub Rottgering, a researcher at the University of Leiden (Netherlands).
The LOFAR radio telescope, operated by the Radioastronomy Institute of the Netherlands (ASTRON), "has a remarkable sensitivity" and allows to observe "the jets" that "are present in the most massive galaxies," which means that "Your black holes never stop eating", said Philip Best, a member of the University of Edinburgh (Scotland, United Kingdom).
Annalisa Bonafede, from the University of Bologna (Italy), explained that when two galaxy clusters merge they can produce radio broadcasts, the origin of which would be in the particles that accelerate during the fusion.
Thanks to LOFAR, they found that "galaxy clusters that are not merging can also show this emission, although at a very low level that was previously undetectable" and that, "in addition to the fusion events, there are other phenomena that can trigger the acceleration of particles on huge scales ".
The LOFAR telescope is the only one that has the ability to map the sky with so much detail and according to Carole Jackson, general manager of ASTRON, "will be a wonderful scientific legacy for the future."