Space photo of the week: ‘El Gordo’ galaxy cluster shakes its guts in largest-ever magnetic field map of space | Space

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What it is: A gigantic map of a galaxy cluster’s magnetic field.

Where it is: El Gordo galaxy cluster, around 7 billion light-years from Earth.

Why it’s so special: For the first time, researchers have sketched out the invisible magnetic field of a gigantic galaxy cluster. The resulting map is the largest of its kind.

Galaxy clusters are the biggest structures in the universe that are bound by gravity. The cluster in question is El Gordo (Spanish for “the Fat One”), which is located around 7 billion light-years from Earth and contains hundreds of galaxies with a combined mass equivalent to more than 2 quadrillion suns.

Scientists revealed the new map, which spans around 6 million light-years across (the width of roughly 60 Milky Way galaxies side by side) in a new study published Feb. 6 in the journal Nature Communications. The researchers also mapped the magnetic fields of four other large galaxy clusters.

Related: Space photo of the week: Hubble catches a ‘baseball galaxy’ with a black hole heart

“These are the first maps of the detailed structure of magnetic fields on an unprecedentedly large scale,” study co-author Alexandre Lazarian, an astronomer at the University of Wisconsin-Madison, told Quanta Magazine.

A recent James Webb Space Telescope image of the “El Gordo” galaxy cluster (sans magentic field lines). (Image credit: NASA, ESA, CSA, J. Diego (Instituto de Física de Cantabria), B. Frye (University of Arizona), P. Kamieneski (Arizona State University), T. Carleton (Arizona State University), and R. Windhorst (University of Arizona), A. Pagan (STScI), J. Summers (Arizona State University), J. D’Silva (University of Western Australia), A. Koekemoer (STScI), A. Robotham (University of Western Australia), and R. Windhorst (University of Arizona))

Researchers created the maps by measuring the movements and energy levels of conductive fluids, such as plasma, that are influenced by the invisible magnetic field lines. The team then used computer simulations to…

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