STARITHM
CHIME detects Fast Radio Burst with DM 140.7 pc/cm³ at high significance
AI Summary
CHIME/FRB Real-time Search Pipeline detected FRB 1181331085 on 2026-10-11 at 14:46:46 UTC with a signal-to-noise ratio of 13.3 and high importance score (0.933). The burst was localized to RA 121.55°, Dec 10.90° with ~0.63° positional uncertainty, and exhibits a dispersion measure of 140.7±1.6 pc/cm³, suggesting an extragalactic origin. The event was observed in the 400-800 MHz band with dual polarization, though no follow-up observations or GCN circulars have been reported at this time.
Measurements
| Event ID | 1181331085 |
|---|---|
| Source | CHIME |
| Alert type | FRB |
| Significance | medium |
| Trigger time (UTC) | Sun, 11 Oct 2026 14:46:46 GMT |
| Right ascension (J2000) | 121.5493482° |
| Declination (J2000) | 10.8970396° |
| Dispersion measure | 140.7222443 pc/cm³ |
| SNR | 13.3067284 |
| GCN notices | 1 |
| GCN circulars | 0 |
Notices (1)
CHIME — FRB · Sun, 11 Oct 2026 14:46:46 GMT
AI summary generated Mon, 12 Oct 2026 10:43:16 GMT.