Einstein Probe detects fast X-ray transient EP260728a with follow-up confirmation
AI Summary
The Einstein Probe's Wide-field X-ray Telescope detected a fast X-ray transient lasting about 70 seconds, followed by detailed spectral analysis showing an absorbed power law fit with a photon index of 1.63. A subsequent observation by the Follow-up X-ray Telescope confirmed the presence of an uncatalogued source within the initial error circle.
Measurements
| Event ID | 01709276975 |
|---|---|
| Source | Einstein Probe WXT |
| Alert type | GRB |
| Significance | high |
| Trigger time (UTC) | Tue, 28 Jul 2026 16:46:27 GMT |
| Right ascension (J2000) | 302.867° |
| Declination (J2000) | -31.71° |
| Position error radius | 0.05063105° |
| Image SNR | 12.3 |
| GCN notices | 1 |
| GCN circulars | 2 |
Notices (1)
Einstein Probe WXT — GRB · Tue, 28 Jul 2026 16:46:27 GMT
GCN Circulars (2)
GCN-45250 — EP260728a
· Wed, 29 Jul 2026 07:40:29 GMT
The Einstein Probe (EP) performed a follow-up observation of the fast X-ray transient EP260728a, detecting an uncatalogued source with specific coordinates and spectral properties. The observation, conducted by EP-FXT, provided detailed spectral and flux measurements of the transient event.
GCN-45248 — EP260728a
· Wed, 29 Jul 2026 02:47:29 GMT
The Einstein Probe mission detected a fast X-ray transient, designated EP260728a, on July 28, 2026. The event lasted approximately 70 seconds and was followed up by the Follow-up X-ray Telescope, which detected an uncatalogued X-ray source within the error circle.
AI summary generated Wed, 29 Jul 2026 08:47:21 GMT.