The article describes the observation of a cosmic duel between two galaxies, one of which is aggressively using radiation against its neighbor. This remarkable event, captured using advanced telescopes, emphasizes the dynamic nature of galactic interactions, notably through the presence of a quasar—a luminous entity powered by a supermassive black hole. The research highlights a crucial moment in cosmic history, shedding light on how such galactic mergers can influence star formation rates and possibly the evolution of galaxies. It's referred to as a 'cosmic joust' and redefines aspects of galaxy dynamics.
This lopsided showdown was reported in a new study set to be published in the journal Nature, marking the first observation of a galaxy blasting its neighbor with radiation.
Using observations made with the Very Large Telescope and the ALMA telescope in Chile, the astronomers determined that the galaxies are veering towards each other at astounding speeds exceeding 311 miles per second.
We discovered a quasar - likely triggered by the merging of two galaxies - that is actively transforming the gas structure in its companion galaxy.
We hence call this system the 'cosmic joust', said study co-lead author Pasquier Noterdaeme, a researcher at the Institut d'Astrophysique de Paris.
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