GCN Circular 37468
Subject
Fast X-ray Transient EP240801a: GMRT radio observations
Date
2024-09-12T06:28:01Z (22 days ago)
From
Arvind Balasubramanian <arvind6895@gmail.com>
Via
Web form
A. Balasubramanian (IIA), D. Eappachen (IIA), J. Quirola-Vasquez (Radboud Univ.), D. K. Sahu (IIA), and G.C. Anupama (IIA) report:
We observed the field of the fast X-ray transient EP240801a (Zhou et al., GCN 36997) with GMRT under the DDT ( PI: D. Eappachen, ddtC385) on 22nd August 2024 in bands 4 (650 MHz) and 5 (1260 MHz) for a total of 4 hours starting from 19:30 UT.
We do not detect any radio source coincident with the position of the optical counterpart reported by Fu et al. (GCN 36998). We used 3C48 for the flux calibration and J2236+284 for complex gain and phase calibration. The CAPTURE-CASA6 pipeline was used for data calibration and imaging. We estimate a 3-sigma radio upper limit of 75 uJy in band 4 and 52 uJy in band 5.
We thank the staff of the GMRT that made these observations possible. GMRT is run by the National Centre for Radio Astrophysics of the Tata Institute of Fundamental Research.