STARITHM
High-significance FRB detected by CHIME with DM 865 pc/cm³ at RA 316.2°, Dec 55.4°
AI Summary
CHIME/FRB Real-time Search Pipeline detected a fast radio burst (FRB 1182247490) on 2026-10-17 at 03:27:26.944 UTC with an exceptionally high importance score of 0.9999. The burst exhibits a dispersion measure of 864.96 ± 0.40 pc/cm³, significantly exceeding the maximum galactic contribution (208.83 pc/cm³), indicating an extragalactic origin. The event was detected with SNR 22.26 across 400-800 MHz with 2 polarizations and localized to ±0.86° precision. No follow-up observations have been reported to date.
Measurements
| Event ID | 1182247490 |
|---|---|
| Source | CHIME |
| Alert type | FRB |
| Significance | high |
| Trigger time (UTC) | Sat, 17 Oct 2026 03:27:26 GMT |
| Right ascension (J2000) | 316.205643° |
| Declination (J2000) | 55.4206659° |
| Dispersion measure | 864.956543 pc/cm³ |
| SNR | 22.2600975 |
| GCN notices | 1 |
| GCN circulars | 0 |
Notices (1)
CHIME — FRB · Sat, 17 Oct 2026 03:27:26 GMT
AI summary generated Sat, 17 Oct 2026 05:29:17 GMT.