The PASJ ( Publications of the Astronomical Society of Japan) special issue on XRISM has been published.
News PASJ Special Issue: Initial Results from XRISM
Related Topics
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XRISM International Conference 2025 Successfully Held
The 1st XRISM International Conference was held from October 20 to 24, 2025, at Kyoto Terrsa near Kyoto Station. Unlike the previous internal XRISM Science Team meetings, this was the first international conference open to the broader scientific community. The event brought together around 380 participants from 18 countries, including about 300 in-person attendees.
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XRISM Unveils a Bipolar Ejecta Structure in the Peculiar Supernova Remnant W49B
An international collaboration team using the X-Ray Imaging and Spectroscopy Mission (XRISM) has successfully mapped the three-dimensional structure of the supernova remnant W49B, revealing that heavy elements are streaming outward in two opposite directions. Thanks to the exceptional energy resolution of XRISM’s Resolve spectrometer, the scientists were able to measure the motion of iron and other heavy elements with unprecedented precision. These findings suggest that W49B may represent a previously unrecognized type of supernova remnant, challenging current theories of how massive stars explode and distribute the elements that enrich the universe.
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XRISM Reveals the Hidden Sulfur in the Milky Way
The X-ray Imaging and Spectroscopy Mission (XRISM) has measured the amount and state of sulfur in the Milky Way’s interstellar medium with unprecedented precision. Using its high-resolution Resolve spectrometer, XRISM analyzed X-ray absorption from bright X-ray binaries GX 340+0 and 4U 1630–472, detecting both gaseous and solid sulfur along the same lines of sight.