STARITHM
Einstein Probe detects X-ray transient EP261103a with optical counterpart observed
AI Summary
The Einstein Probe WXT detected an X-ray transient (EP261103a) on 2026-11-03. An optical counterpart was later identified in r-band with a magnitude of 24.10, contributing valuable data for further study.
Measurements
| Event ID | 01709322209 |
|---|---|
| Source | Einstein Probe WXT |
| Alert type | GRB |
| Significance | high |
| Trigger time (UTC) | Tue, 03 Nov 2026 20:18:26 GMT |
| Right ascension (J2000) | 81.849° |
| Declination (J2000) | -25.33° |
| Position error radius | 0.05093284° |
| Image SNR | 7.7 |
| GCN notices | 1 |
| GCN circulars | 2 |
Notices (1)
Einstein Probe WXT — GRB · Tue, 03 Nov 2026 20:18:26 GMT
GCN Circulars (2)
GCN-46148 — EP261103a
· Wed, 04 Nov 2026 12:38:05 GMT
The New Technology Telescope (NTT) observed the optical counterpart of the fast X-ray transient EP261103a, detecting it in the r-band with a magnitude of 24.10 +/- 0.13. The observations were conducted 8.67 hours after the initial trigger, providing significant data for further analysis.
GCN-46142 — EP261103a
· Wed, 04 Nov 2026 03:27:34 GMT
The Einstein Probe (EP) mission detected an X-ray transient, designated EP261103a, on November 3, 2026, at 20:18:26 UTC. The transient was initially observed by the Wide-field X-ray Telescope (WXT) and subsequently confirmed by the Follow-up X-ray Telescope (FXT).
AI summary generated Wed, 04 Nov 2026 13:30:05 GMT.