GCN 44441: EP260502a: Las Cumbres upper limit

2026-05-02T07:43:21.082Z | rev 0 | event: EP260502a

Wenxiong Li (NAOC), Iair Arcavi (TAU), Runduo Liang (NAOC), Ido Keinan (TAU), David Sand (U of Arizona)
We observed the position of EP260502a (Liu et al., GCN 44440) with a Las Cumbres 1m telescope at Cerro Tololo Interamerican Observatory, Chile, 19 mins after the Einstein Probe WXT trigger. We took 2x300s exposures in each visit in the broad optical w band.
We didn’t detect any uncataloged source within the EP-FXT error circle down to a 3-sigma limiting r-band mag of 20.0 mag.