X-ray burst from Mrk 421 detected by Einstein Probe WXT.
Event ID: 01709258519
Significance: medium
Notices: 1
Circulars: 3
Generated: Tue, 30 Jun 2026 07:46:04 GMT
AI Summary
An X-ray burst was detected from the known blazar Mrk 421 on 2026-02-21T08:28:55.699Z with a net count rate of 0.03 counts/s. Follow-up optical observations 11 hours and 3 days post-burst did not reveal any new optical transients.