STARITHM
Einstein Probe WXT detected a stellar flare from LP 705-28
AI Summary
The EP-WXT instrument detected trigger 01709320726 on 2026-09-26 at 11:52:25 UTC, initially classified as a GRB candidate with an image SNR of 7.4 in the 0.5-4 keV band. Follow-up analysis by the Einstein Probe team identified this as a stellar flare from the star LP 705-28, with an estimated X-ray flux of 8×10⁻¹¹ erg/s/cm² and luminosity of ~1×10³¹ erg/s. This represents a stellar activity event rather than a genuine transient astrophysical source.
Measurements
| Event ID | 01709320726 |
|---|---|
| Source | Einstein Probe WXT |
| Alert type | GRB |
| Significance | low |
| Trigger time (UTC) | Sat, 26 Sep 2026 11:52:25 GMT |
| Right ascension (J2000) | 6.447° |
| Declination (J2000) | -9.954° |
| Position error radius | 0.05168889° |
| Image SNR | 7.4 |
| GCN notices | 1 |
| GCN circulars | 1 |
Notices (1)
Einstein Probe WXT — GRB · Sat, 26 Sep 2026 11:52:25 GMT
GCN Circulars (1)
GCN-45760 — The EP-WXT trigger 01709320726 is likely a flaring star
· Sat, 26 Sep 2026 13:17:20 GMT
The Einstein Probe (EP) detected a likely stellar flare from the star LP 705-28 on September 26, 2026, with an estimated flux of 8e-11 erg/s/cm^2 in the 0.5-4.0 keV range and an X-ray luminosity of around 1e31 erg/s. This event was identified by the EP-WXT instrument, which is designed to monitor the soft X-ray sky.
AI summary generated Tue, 29 Sep 2026 15:13:54 GMT.