GCN Circular 43845
Subject
EP260214a: VLA 6 GHz detection
Event
Date
2026-02-26T14:15:11Z (7 days ago)
From
Roberto Ricci at INAF-IRA <ricci@ira.inaf.it>
Via
Web form
R. Ricci, M. Yadav, Y.-H. Yang, N. Passaleva and E. Troja (U Rome) report:
We observed the Einstein Probe event EP260214a detected by EP/WXT (A. Li et al. GCN 43742) with Very Large Array in C-band at the centre frequency of 6 GHz with a bandwidth of 4 GHz on Feb 21st 2026, 6.6 days after the trigger.
Within the EP/FXT error circle (A. Li et al., GCN 43751) we detect a possible radio counterpart at RA, Dec (J2000) = 13:24:55.401, -29:02:32.97 with a flux density of about 60 uJy.
No source is visible at this position in our deep VLT/HAWKI image (N. Passaleva et al. GCN 43756). However, we note that the candidate counterpart lies 8.8” away from a bright galaxy (r=19.62 AB mag), corresponding to a chance alignment of Pcc~4% (Bloom et al. 2002). Assuming a photometric redshift of z=0.18±0.15 (PRLS, Zhou et al. 2021), this corresponds to a projected physical offset of 27 (+15, -22) kpc.
Further observations to assess the variability of the candidate radio counterpart are planned.
We thank the VLA staff for executing the observations