CHIME detects FRB 1171352361 with DM=1555.6 at high significance
AI Summary
CHIME/FRB Real-time Search Pipeline detected a fast radio burst on 2026-07-26 at 22:15:19.616 UTC with a signal-to-noise ratio of 13.1 and importance score of 0.9999. The burst exhibits a dispersion measure of 1555.6±0.4 pc/cm³, significantly exceeding the Galactic maximum (34.6 pc/cm³), indicating an extragalactic origin. The event was localized to RA=158.52°, Dec=16.23° with ~0.56° positional uncertainty across the 400-800 MHz band. No follow-up observations or additional detections have been reported.
Measurements
| Event ID | 1171352361 |
|---|---|
| Source | CHIME |
| Alert type | FRB |
| Significance | medium |
| Trigger time (UTC) | Sun, 26 Jul 2026 22:15:19 GMT |
| Right ascension (J2000) | 158.5168477° |
| Declination (J2000) | 16.2265445° |
| Dispersion measure | 1555.6278076 pc/cm³ |
| SNR | 13.1467142 |
| GCN notices | 1 |
| GCN circulars | 0 |
Notices (1)
CHIME — FRB · Sun, 26 Jul 2026 22:15:19 GMT
AI summary generated Thu, 30 Jul 2026 13:55:36 GMT.