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XRISM Unveils Surprising Cosmic Wind Dynamics from Neutron Star

9/18/2025

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Summary

Story summary

The X-Ray Imaging and Spectroscopy Mission (XRISM) found unexpected differences in cosmic winds from neutron star GX13+1 and supermassive black holes.
On February 25, 2024, GX13+1's winds were denser but slower than expected, traveling at about 1 million km/h.
The neutron star's accretion disc brightened, reaching the Eddington limit, affecting cosmic wind dynamics.
Winds from supermassive black holes were observed to be faster and clumpier due to cooler, ultraviolet-emitting accretion discs.
These findings may alter our understanding of cosmic wind dynamics and galaxy formation.

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Story summary

The X-Ray Imaging and Spectroscopy Mission (XRISM) found unexpected differences in cosmic winds from neutron star GX13+1 and supermassive black holes.
On February 25, 2024, GX13+1's winds were denser but slower than expected, traveling at about 1 million km/h.
The neutron star's accretion disc brightened, reaching the Eddington limit, affecting cosmic wind dynamics.
Winds from supermassive black holes were observed to be faster and clumpier due to cooler, ultraviolet-emitting accretion discs.
These findings may alter our understanding of cosmic wind dynamics and galaxy formation.