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    XRISM gives sharpest-ever glimpse at growth of a rapidly-spinning black hole

    January 6, 2026, Categories  Astronomy/Space

    Image: Artist’s rendering of the innermost regions around the supermassive black hole in the active galaxy MCG-6-30-15.  The event horizon (black region in center) marks the boundary between the black hole and the surrounding accretion disk, where the gas orbits at nearly the speed of light before plunging in. The extreme gravity and spin of the black hole combine to warp the shape of both the event horizon and the accretion disk as predicted by general relativity, even bending the light from the back side of the disk up into our line of sight. The wind driven from the innermost regions of this system is depicted by outflowing streamlines.  The component of this wind along our line of sight absorbs some of the X-rays emitted from the innermost disk. 

    Astronomers have obtained the sharp...

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    XRISM catches a pulsar’s cosmic wind—and sees a surprising result

    October 28, 2025, Categories  Astronomy/Space

    XRISM catches a pulsar's cosmic wind—and sees a surprising result
    An artist’s conception of a pulsar/main sequence star pair, similar to the one featured in the study. Credit: ESA

    The universe is a strange place. The X-ray Imaging and Spectroscopy Mission (XRISM) orbiting observatory recently highlighted this fact, when it was turned on a pulsar to document its powerful cosmic winds.

    The XRISM observatory is a joint mission for NASA, the European Space Agency (ESA), and the Japan Aerospace Exploration Agency (JAXA). The mission was also a replacement for the ill-fated Hitomi X-ray observatory, which failed shortly after launch in 2016.

    The discovery comes courtesy of ESA’s Resolve instrument, a soft X-ray spectrometer aboard XRISM. The study looked at neutron star GX 13+1...

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