CHIME detects Fast Radio Burst with DM=98.67 pc/cm³ at high significance
AI Summary
CHIME/FRB Real-time Search Pipeline detected FRB 1169918463 on 2026-07-10 at 05:49:35 UTC with a signal-to-noise ratio of 12.77 and high importance score (0.923). The burst is localized to RA=255.27°, Dec=2.99° with ~0.71° positional uncertainty, and exhibits a dispersion measure of 98.67±1.62 pc/cm³ (exceeding the Galactic maximum of 70.61 pc/cm³), indicating an extragalactic origin. Observations span 400-800 MHz with dual polarization; no follow-up observations have been reported yet.
Measurements
| Event ID | 1169918463 |
|---|---|
| Source | CHIME |
| Alert type | FRB |
| Significance | medium |
| Trigger time (UTC) | Fri, 10 Jul 2026 05:49:35 GMT |
| Right ascension (J2000) | 255.2690485° |
| Declination (J2000) | 2.9851818° |
| Dispersion measure | 98.6673203 pc/cm³ |
| SNR | 12.7736158 |
| GCN notices | 1 |
| GCN circulars | 0 |
Notices (1)
CHIME — FRB · Fri, 10 Jul 2026 05:49:35 GMT
AI summary generated Tue, 21 Jul 2026 20:49:26 GMT.