![\"IRAS](\"https:\/\/techfragments.com\/wp-content\/uploads\/2015\/03\/IRAS-F111193257.jpg\")
Artist’s impression shows how the supermassive black hole at the center of IRAS F11119+3257 gathers surrounding matter from a disc (orange) and pushes it away in a powerful wind (blue). This wind powers a large-scale galactic outflow of molecular gas (reddish purple).
Credit: Copyright ESA\/ATG medialab<\/p><\/div>\n
The galaxy highlighted in the study, known as IRAS F11119+3257, has an actively growing supermassive black hole<\/a> at its center. This means that, unlike the large black hole at the center of our own Milky Way galaxy, this black hole is actively consuming large amounts of gas. As material enters the black hole, it creates friction, which in turn gives off electromagnetic radiation, including X-rays and visible light.<\/p>\n Black holes that fit this description are called active galactic nuclei<\/a> (AGN), and their intense radiation output also generate powerful winds that force material away from the galactic center. The study found that these AGN winds are powerful enough to drive the large molecular outflows that reach the edges of the galaxy’s borders.<\/p>\n Although theorists have suspected a connection between AGN winds and molecular outflows, the current study is the first to confirm the connection with observational evidence.<\/p>\n According to lead author Francesco Tombesi:<\/p>\n “This is the first galaxy in which we can see both the wind from the active galactic nucleus and the large-scale outflow of molecular gas at the same time.”<\/p><\/blockquote>\n Tombesi is an assistant research scientist in UMD’s astronomy department. He has a joint appointment at NASA’s Goddard Space Flight Center via the Center for Research and Exploration in Space Science and Technology.<\/p>\n The team analyzed data collected in 2013 by Suzaku, an X-ray satellite operated by the Japan Aerospace Exploration Agency (JAXA) and NASA, as well as data from the European Space Agency’s Herschel Space Observatory<\/a>.<\/p>\n While many previous studies independently described AGN winds and molecular outflows in separate galaxies, Tombesi and his colleagues needed to find a galaxy in which they could see both at the same time. IRAS F11119+3257 turned out to be a perfect candidate.<\/p>\n An alternate theory says that active star formation<\/a> near the galactic center could drive molecular outflows. However, the brightness of IRAS F11119+3257’s active nucleus – which is responsible for about 80 percent of the galaxy’s overall radiation – suggested otherwise.<\/p>\n Star formation alone cannot explain this intense concentration of energy, leading the researchers to conclude that the AGN winds must be the primary driver.<\/p>\n Said Marcio Mel\u00e9ndez, a research associate in UMD’s astronomy department and a co-author of the study:<\/p>\n “The temptation is to ignore the supermassive black hole when studying galactic dynamics and evolution, but our study shows that you can’t because it influences galaxies on the larger scale.”<\/p><\/blockquote>\n Limited satellite time means that, at least for now, the team has only this one galaxy as a baseline for study. But now that they have a better idea of what they are looking for, they will be able to find more candidate galaxies in the future.<\/p>\nX-ray Satellite Suzaku<\/h2>\n