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GCN Circular 36336

Subject

LIGO/Virgo/KAGRA S240422ed: DDOTI Optical Upper Limit for J-GEM24a

Date

2024-04-27T21:34:23Z (7 months ago)

From

Camila Angulo at UNAM <camiangulo@astro.unam.mx>

Via

Web form

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 #36333Not found
 
 
) to LIGO/Virgo/KAGRA S240422ed (GCN #36236Not found
 
 
, #36240Not found
 
 
), 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 #36256Not found
 
 
).
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.