Astronomers through ground-based and space telescopes have discovered in the system of merging clusters of galaxies Abell 2384 the radio galaxy, the activity of which is responsible for the curvature form of a bridge of hot gas connecting the clusters. Article published in the journal Monthly Notices of the Royal Astronomical Society, briefly about it it is told on the website of the Observatory “Chandra”.
Clusters of galaxies represent some of the largest gravitationally bound systems in the Universe that can contain hundreds or thousands of galaxies and large stocks of hot intergalactic gas and are optically invisible dark matter. A major role in their evolution and growth played by the collision and merger of two galaxies with each other. Features of these processes depend on the parameters of the merging galaxies is poorly studied. In particular, scientists are interested in how the spread and dissipate the shock waves and how vnutrikletochnaya environment in the course of mergers.
A team of astronomers led by Verulam Pareja (Viral Parekh) of the South African radio astronomy Observatory and Rhodes University has published the results of research Abell 2384 in the constellation of Capricorn, the light of which went to Earth 1.2 billion years. The observations were carried out using x-ray space Observatory “Chandra” and “XMM-Newton”, as well as ground-based radio telescope GMRT (Giant Metrewave Radio Telescope).
Abell 2384 is a unique system that formed several million years ago, when two clusters of galaxies A2384 (N) and A2384 (S) having different masses, collided, and then passed through each other, starting the process of merging. They are connected by a bridge of dense hot gas, visible in x-rays, with a length of three million light years. An overall assessment of the mass of the system amounted to 260 trillion solar masses, of which the bridge accounts for about six trillion solar masses.
Observations have shown that in the outer part of the A2384 cluster (S) is an active radio galaxy LEDA 851827 related to the type I FR. The activity of a supermassive black hole in its center led to the formation of relativistic jets and extended structures, bright in the radio (radiobuzz), the length of which is 1.2 and 1.7 million light years. It turned out that one of radiofutura faced with a gas bridge, forcing his stuff to the sides and forming a shock front, intensively radiating in x-rays. This has led to a noticeable distortion of the shape of the bridge. The similar situation is considered unique, and the subsequent monitoring of the system should help to establish the age of the radio galaxies to make a map of the intensity of radio emission from it, to understand the processes of interaction of active galaxies with vnutrikletochnaya environment in clusters.
Earlier we talked about how the Telescope event horizon got the most detailed image of the jet of the blazar 3C 279 and that heated the plasma in the jets of SS 433 microquasar.