{"id":33782,"date":"2026-06-27T15:00:00","date_gmt":"2026-06-27T20:00:00","guid":{"rendered":"https:\/\/www.ecoticias.com\/en\/?p=33782"},"modified":"2026-06-27T07:48:34","modified_gmt":"2026-06-27T12:48:34","slug":"xrism-is-reading-the-perseus-clusters-elemental-gossip-one-x-ray-whisper-at-a-time","status":"publish","type":"post","link":"https:\/\/www.ecoticias.com\/en\/xrism-is-reading-the-perseus-clusters-elemental-gossip-one-x-ray-whisper-at-a-time\/33782\/","title":{"rendered":"XRISM is reading the Perseus cluster\u2019s elemental gossip, one X-ray whisper at a time"},"content":{"rendered":"\n

A new X-ray study has taken a sharper look at the hot gas inside the Perseus galaxy cluster<\/a>, one of the brightest galaxy clusters in the X-ray sky. The result challenges an old puzzle about whether iron really drops off at the very center of the cluster, where earlier instruments seemed to suggest something strange was happening.<\/p>\n\n\n\n

Using the Resolve instrument<\/a> aboard the X-Ray Imaging and Spectroscopy Mission (XRISM)<\/a>, researchers found no strong evidence for a deep central iron drop. They also found that several chemical elements<\/a> appear surprisingly uniform compared with iron across the cluster core, suggesting that much of this cosmic enrichment happened long ago, before or during the assembly of the cluster itself.<\/p>\n\n\n\n

A sharper cosmic fingerprint<\/h2>\n\n\n\n

The mission is a collaboration between the Japan Aerospace Exploration Agency (JAXA<\/a>) and NASA with participation from the European Space Agency (ESA)<\/a>. Its Resolve instrument reads X-ray light with unusual precision, helping astronomers identify elements by their \u201cfingerprints\u201d in space.<\/p>\n\n\n\n

That matters because galaxy clusters<\/a> are not just collections of galaxies. They are filled with extremely hot, thin gas that glows in X-rays, and that gas stores clues from billions of years of stellar explosions<\/a>.<\/p>\n\n\n\n

The XRISM Collaboration, with Marc Audard, Hisamitsu Awaki, and Ralf Ballhausen among the first names listed on the paper, used four separate views of Perseus. Together, those observations reached nearly 815,000 light-years from the cluster\u2019s center.<\/p>\n\n\n\n

\"XRISM
XRISM\u2019s spectrum of the Perseus cluster maps the X-ray fingerprints of elements forged by ancient supernovas.<\/figcaption><\/figure>\n\n\n\n

The gas between galaxies<\/h2>\n\n\n\n

The \u201cintracluster medium\u201d is the gas that sits between galaxies inside a galaxy cluster. It is not empty space. It is more like a vast, extremely hot mist spread across a region much larger than any single galaxy.<\/p>\n\n\n\n

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Read More: Neutron stars may double as dark-matter detectors \u2014\u00a0because who wouldn\u2019t use cosmic wrecking balls for science?<\/a><\/h3>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n

In Perseus, that gas contains chemical elements made by supernovas over roughly 12 billion years. Some came from massive stars that collapsed at the end of their lives, while others came from Type Ia supernovas, which involve exploding white dwarf stars.<\/p>\n\n\n\n

Why look at iron? Iron is one of the strongest chemical tracers in X-ray astronomy, and it can reveal how many stellar explosions helped seed a cluster with heavier elements<\/a>. In everyday terms, it is like finding soot patterns after a fire and trying to reconstruct where the sparks came from.<\/p>\n\n\n\n

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