Shockwaves in the ‘cosmic web’ connecting galaxies seen for 1st time

Shockwaves in the ‘cosmic web’ connecting galaxies seen for 1st time

A composite image of the prior 3 images data-based simulations, including radio, magnetic fields and gases. (Image credit: F. Vazza, D. Wittor and J. West)

Scientists have discovered the first evidence of shockwaves rippling through the “cosmic web,” a massive network of interweaving filaments that represents the largest structure in the universe. 

The discovery represents tantalizing evidence of magnetic fields weaving through the gas, dust, and dark matter tendrils which link galaxies together.

Scientists first began to think that on the largest scales, the universe is ordered in a web-like pattern with filaments that cross vast voids in space and pull galaxies into clusters in the 1960s. Two decades later using computer modeling, researchers were able to determine what this vast universal network might look like for the first time.

Astronomers have since mapped the cosmic web with actual observations in the process answering questions about its structure. One element

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Astronomers spotted shock waves shaking the cosmic web

Astronomers spotted shock waves shaking the cosmic web

For the first time, astronomers have caught a glimpse of shock waves rippling along strands of the cosmic web — the enormous tangle of galaxies, gas and dark matter that fills the observable universe.

Combining hundreds of thousands of radio telescope images revealed the faint glow cast as shock waves send charged particles flying through the magnetic fields that run along the cosmic web. Spotting these shock waves could give astronomers a better look at these large-scale magnetic fields, whose properties and origins are largely mysterious, researchers report in the Feb. 17 Science Advances.

Finally, astronomers “can confirm what so far has only been predicted by simulations — that these shock waves exist,” says astrophysicist

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