New tidal tails therefore indicate the quick merging, which could be the trigger of starburst activities in Ultra Luminous Infrared Galaxy
Using a millimeter-wave radio telescope in Granada, Spain, Philip Solomon of the State University of New York at Stony Brook and his colleagues found that the infrared galaxy
emits strong radio signals from carbon monoxide - a telltate sign of star formation.
In the center of NGC 6240, the two black holes in the cores will whip up a frenzy of radiation as they careen towards one another head-on, likely transforming the galaxy into a monster known as an ultra-luminous infrared galaxy
, thousands of times as bright in infrared as our Milky Way.