Two dwarf galaxies in the virgin cluster are connected by a huge bridge of neutral hydrogen.
Scientists working at the ICrar International Radioactive Research Center have discovered a huge structure that lasted up to 185,000 impressive lighting years between the galaxies of 4532 and DDO 137 in 53 million light years from the Earth. It extends a huge tail of 1.6 million years, which makes it the biggest ever observed. The opening article is published in the monthly notice of the Royal Astronomy Association.
It became a significant step in understanding the interaction of galaxies, Professor Lister Stevivl-Smith from the University of Western Australia (UWA), the leading author of the study, certainly.
Modeling shows the tidal forces operating between these galaxies, along with the closeness of the great accumulation of Virgo galaxies, playing a decisive role in the observed gas dynamics, he explained. – When the galaxies revolve around each other and move to the hot air clouds, cover the virgin cluster, 200 times from the sun, they have dynamic pressure – it pushes and heats the gas. This process is similar to burning in the atmosphere of a falling satellite, but lasts for a billion years. The density of the electrons and the speed that galaxies falling into a hot air is enough to explain why so many gases are extended from the galaxies and throw them into the vicinity. “
Observations are performed as part of the Map of the sky using the radio Askap telescope in Australia. This project studies the distribution of neutral hydrogen in space with high resolution.
Professor Uwa said neutral hydrogen plays an important role in the formation of stars, which makes this discovery basically to understand the interaction of the evolution of galaxies, especially in the dense media, Professor Uwa Kenji Beki, an ICrar astronomical physicist, synonyms of work.
According to Stevivl-Smite, the system was discovered to remind him of the relationship between our galaxies and Magellanic clouds, allowing you to study it from the outside.
Understanding the dynamics of these gas balls that come up with the idea of how galaxies grow over time how Galactic gas is redistributed and under what conditions, galaxies can or cannot form stars. This contributes our widest understanding of the largest structures in the universe and their life, helping us to better understand the complexity and history.
