A burst of X-rays was picked up by Einstein Probe, a Chinese-led space X-ray telescope, on 7 October 2026. The same spot on the sky was also linked to a gamma-ray burst seen by another satellite, SVOM. A follow-up X-ray telescope found a previously unknown X-ray source within the first position, which was in the southern sky at roughly right ascension 11.6 degrees, declination -17.7 degrees. About 8 hours after the trigger, a ground telescope at Xinglong Observatory in China detected a fading visible-light afterglow, about 20th magnitude, which is far too faint to see without a large telescope. Together these point to an ordinary gamma-ray burst, most likely from a distant exploding star. The reports give no distance yet, and no data on how long or how bright the burst was.

How unusual is it? A gamma-ray burst with an X-ray and optical afterglow is typical, since Fermi and Swift report a few hundred bursts a year and many have afterglows. A measured distance (redshift) or unusual brightness or duration would make it notable.

Written by an AI model (claude-sonnet-5-5) from the official reports in this thread, and rewritten as new reports arrived (version 2); last updated 10/8/2026 11:10:42 AM. It may contain mistakes: the reports themselves are the authority.