We have discovered galaxies that previously had no traces of jets, but now have them. This
happened relatively recently, which means they are still young.Christina Niland, NRC research scientist working at the Naval Research Laboratory
Such jets can greatly influence the growth and evolution of their galaxies, but we still do not fully understand how they form and what task they perform.
All observations were made by VLASS researchers -is a large group working on a unique all-sky radio survey. Observations began in 2017 and the first of three scans has now been completed. As a result, they are about 2,000 objects that appear in VLASS images but were not detected in the previous FIRST survey.
Of these, they selected 26 objects that had previouslywere classified as galaxies with active nuclei powered by supermassive blacks. FIRST observations were carried out between 1994 and 2001, and VLASS in 2019. Thus, the intervals between observations ranged from 18 to 25 years. It was during this period that jets formed in galaxies.
Scientists are already preparing for a new phase of observations: they will also explore galaxies with an X-ray observatory and telescopes in the visible and infrared range.
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