TITLE: GCN CIRCULAR NUMBER: 36336 SUBJECT: LIGO/Virgo/KAGRA S240422ed: DDOTI Optical Upper Limit for J-GEM24a DATE: 24/04/27 21:34:23 GMT FROM: Camila Angulo at UNAM camiangulo@astro.unam.mx
Camila Angulo Valdez (UNAM), Rosa L. Becerra (UTOV), Alan M. Watson (UNAM), Simone Dichiara (PSU), Eleonora Troja (UTOV), Nat Butler (ASU), William H. Lee (UNAM), Alexander Kutyrev (GSFC/UMD), Tsvetelina Dimitrova (ASU), Keneth Garcia Cifuentes (UNAM), Margarita Pereyra (UNAM) and Océlotl Lopez (UNAM) report:
Following the detection of a possible near-infrared counterpart J-GEM24a (GCN #36333) to LIGO/Virgo/KAGRA S240422ed (GCN #36236, #36240), we visually inspected the position of this candidate in the images obtained with the DDOTI wide-field imager at the Observatorio Astronomico Nacional on Sierra de San Pedro Martir (http://ddoti.astroscu.unam.mx) on the night of 2024-04-23 UTC (GCN #36256). We found no significant optical counterparts at the position of this source in our stacked unfiltered image, down to a limiting 5-sigma AB magnitude of w=20.2.
We thank the staff of the Observatorio Astronomico Nacional in San Pedro Martir.
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