Quasars tsunamis can prevent star formation. This conclusion was made by scientists from the Virginia Polytechnic University, who studied the emission of energy by quasars – the most energy flows ever observed in the Universe. The work was published in the journal Astrophysical Journal Supplements.
Quasars are considered the brightest objects in the universe. They arise when too much gas enters the supermassive black hole, which is located in the center of almost every galaxy. As a result, the gravitational energy of the fall turns into heat and light, and a bright jet appears around the black hole.
It is believed that quasars arise most often due to the collision of galaxies, when a gigantic amount of gas appears near a black hole. However, as a result, its radiation in the brightest stage pushes dust and gas out of the vicinity, the quasar itself goes out, and star formation stops in the galaxy itself.
This process occurs under the influence of quasar winds, extremely high-energy energy flows that propagate through the galactic disk, violently sweeping away the material that could form new stars
In a new study conducted with the Hubble telescope, scientists found that these winds – a kind of cosmic tsunami – dramatically heat the gas and dust through which they pass.
The material can warm up to a billion degrees, after which it begins to glow over the entire visible spectrum. According to the authors of the study, this effect may explain the reason why scientists still have not been able to detect a large number of large galaxies outside the Milky Way – it is likely that tsunamis on quasars create light pollution that does not allow them to be seen.