STARITHM
CHIME detects high-significance Fast Radio Burst at RA 312.54°, Dec 19.62°
AI Summary
CHIME/FRB Real-time Search Pipeline identified a Fast Radio Burst (FRB) on 2026-10-19 at 03:02:43 UTC with exceptional confidence (importance: 0.9999637). The burst exhibits a dispersion measure of 890.03 pc/cm³ (error: 0.40), significantly exceeding the Galactic maximum of 93.40 pc/cm³, indicating an extragalactic origin. Detected across 400-800 MHz with SNR of 20.14 and localized to ~0.47° uncertainty, the event warrants multi-wavelength follow-up observations to constrain the source properties and potential host galaxy.
Measurements
| Event ID | 1182475843 |
|---|---|
| Source | CHIME |
| Alert type | FRB |
| Significance | medium |
| Trigger time (UTC) | Mon, 19 Oct 2026 03:02:43 GMT |
| Right ascension (J2000) | 312.5435568° |
| Declination (J2000) | 19.6186729° |
| Dispersion measure | 890.027771 pc/cm³ |
| SNR | 20.1423283 |
| GCN notices | 1 |
| GCN circulars | 0 |
Notices (1)
CHIME — FRB · Mon, 19 Oct 2026 03:02:43 GMT
AI summary generated Mon, 19 Oct 2026 06:01:54 GMT.