They detect movement “on unprecedented scales” in intergalactic space


June 15, 2021 23:20 GMT

Galaxies don’t just rotate: Scientists have discovered signs of rotation in the giant filaments that connect them.

the huge intergalactic threads, not directly visible but observed in space due to its effect on the light emitted by other distant celestial bodies, it is in motion. They are not only moving away from us or getting close to us, they are transforming Communication This Monday, the Leibniz Institute for Astrophysics in Potsdam, Germany.

The researchers were able to calculate the angular momentum of some of these movements. This moment is the primary function of accurately describing spin and shows that these conductors of matter spin on “unprecedented scales,” spanning hundreds of millions of light years.

The first author of this discovery, astrophysicist Bing Wang, refers to these barely detectable filaments as a kind of “Super Cosmic Roads”. These “fine cylinders,” whose proportions are comparable to a pencil, contain galaxies, but “at these scales, the galaxies within are themselves samples of dust.”

Flows usually matter From less dense regions to super dense regions They are displaced in vortices or in helix-shaped orbits. However, the forces responsible for this massive rotation are an unsolved problem for the Potsdam team, as “there is no primitive rotation in the early universe” and any rotation is created when structures form in space.

The team made this discovery using a sophisticated tool Mapping galaxy clusters From deep space and measurements Differences in redshift (The condition in which electromagnetic radiation emitted or reflected from an object turns red at the end of the electromagnetic spectrum) between visible adjacent regions in the sky that can combine with filaments. These differences in redshift, as a function of viewing angle, indicate the difference in velocity between galaxies moving away and approaching the putative drum.

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“The rotation of the filament is more clearly revealed when the tip is observed,” detail the investigators at published article June 14 This summarizes the measurements made. In addition, it was discovered The more rotation the more intense the auras that surround the light sources located at each end of the filament.

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