STARITHM
CHIME detects high-confidence FRB with DM 442.79 pc/cm³ at RA 327.15°, Dec -3.14°
AI Summary
CHIME/FRB Real-time Search Pipeline identified a fast radio burst (FRB) on 2026-10-16 at 04:07:50.666 UTC with exceptional confidence (importance: 0.9999). The burst exhibits a dispersion measure of 442.79±0.40 pc/cm³, significantly exceeding the maximum Galactic contribution (42.14 pc/cm³), confirming extragalactic origin. Detection parameters include SNR 25.15, dual-polarization observation, and localization uncertainty of ~0.64° in both coordinates. No follow-up observations or human-written circulars have been reported at this time.
Measurements
| Event ID | 1182123812 |
|---|---|
| Source | CHIME |
| Alert type | FRB |
| Significance | medium |
| Trigger time (UTC) | Fri, 16 Oct 2026 04:07:50 GMT |
| Right ascension (J2000) | 327.1487922° |
| Declination (J2000) | -3.1427798° |
| Dispersion measure | 442.7898254 pc/cm³ |
| SNR | 25.1509228 |
| GCN notices | 1 |
| GCN circulars | 0 |
Notices (1)
CHIME — FRB · Fri, 16 Oct 2026 04:07:50 GMT
AI summary generated Fri, 16 Oct 2026 04:50:10 GMT.