Trigger 1148770: Swift detection of Cyg X-1 due to Star Tracker loss of lock
Abstract
At 00:27:49 UT, the Swift Burst Alert Telescope (BAT) was triggered on a noise event (trigger=1148770). The BAT on-board calculated location is RA, Dec 299.512, +35.075, which is RA(J2000) = 19h 58m 03s Dec(J2000) = +35d 04' 288" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a signal which is typical for a rate trigger however there were Star Tracker problems.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- January 2023
- Bibcode:
- 2023GCN.33163....1G