XRISM Reveals Black Hole Turbulence in M87 Galaxy

NASA's XRISM Spacecraft Peers Into the 'Eye of the Storm' Around Supermassive Black Holes

The joint NASA-JAXA X-ray mission XRISM has revealed the most violent turbulence ever detected in a galaxy cluster, centered on the supermassive black hole M87*. The spacecraft's unprecedented ability to measure gas velocities has transformed our understanding of how black holes shape their cosmic surroundings.

DT Editorial AI

Feb 21, 2026·5 min read·1,286 words

Measuring the Unmeasurable

For the first time, astronomers have peered directly into the metaphorical eye of the storm swirling around a supermassive black hole, measuring the velocities and turbulence of superheated gas with a precision that was previously impossible. The observations, published in Nature in late January 2026, were made possible by the X-Ray Imaging and Spectroscopy Mission, known as XRISM, a joint venture between the Japan Aerospace Exploration Agency and NASA with participation from the European Space Agency.

The target of these groundbreaking observations was M87*, the supermassive black hole at the center of the giant elliptical galaxy Messier 87, located approximately fifty-five million light-years from Earth in the Virgo Cluster. M87* holds a special place in astronomical history as the first black hole ever directly imaged, when the Event Horizon Telescope captured its iconic shadow in 2019. Now XRISM has added an entirely new dimension to our understanding of this cosmic giant by revealing the dynamic behavior of the gas surrounding it.

As one researcher described the advancement, before XRISM it was as though scientists could see a photograph of a storm. Now they can measure the speed of the cyclone itself.

The Strongest Turbulence Ever Seen

When XRISM zoomed into the relatively compact region immediately surrounding M87*, it discovered something extraordinary. The turbulence in the hot gas enveloping the black hole is the most violent ever recorded in any galaxy cluster, exceeding even the extreme conditions generated when entire galaxy clusters collide and merge, events that are among the most energetic phenomena in the universe.

Galaxy clusters are the largest gravitationally bound structures in the cosmos, containing hundreds or thousands of galaxies embedded in a vast atmosphere of hot gas called the intracluster medium. This gas typically reaches temperatures of tens of millions of degrees, hot enough to emit copious X-rays. Normally, the most extreme turbulence in the intracluster medium occurs during mergers, when two clusters smash together at thousands of kilometers per second.

The fact that a single supermassive black hole can generate turbulence exceeding even these cataclysmic events speaks to the extraordinary concentration of energy in the region immediately surrounding M87*. The black hole, through a combination of jets, outflows, and accretion processes, is stirring its surroundings with a ferocity that dwarfs the most violent large-scale events in the universe.

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Anatomy of a Black Hole Storm

The XRISM observations revealed a striking pattern in the velocity structure around M87*. The fastest gas motions are concentrated closest to the black hole and drop off rapidly with distance. This velocity gradient is consistent with a combination of two physical processes. The first is turbulent eddies, swirling vortices of gas stirred up by the black hole's gravitational influence and the interaction of its jets with the surrounding medium. The second is a shockwave of outflowing gas driven by energy released as matter falls toward the black hole.

Supermassive black holes like M87* are surrounded by accretion disks, vast flattened structures of gas and dust spiraling inward under gravitational attraction. As this material spirals closer, it heats to millions of degrees and releases enormous amounts of energy. Some of this energy is channeled into relativistic jets, narrow beams of plasma launched perpendicular to the accretion disk at speeds approaching that of light. M87* hosts one of the most spectacular jets known, extending thousands of light-years from the galaxy's center.

These jets do not simply pass through the surrounding gas without effect. They inflate enormous bubbles, or cavities, in the intracluster medium, displacing vast quantities of hot gas and driving shock waves outward. The XRISM observations have now quantified this interaction with unprecedented detail, revealing the velocity structure and turbulent energy content of the gas at various distances from the black hole.