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GCN Circular 36111

GRB 240414A: AKO Optical Upper Limit
2024-04-15T10:28:18Z (a month ago)
Mohammad Odeh at Al Khatim Observatory M44 <>
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Mohammad Odeh (Al-Khatim Observatory, AKO, operated by the International
Astronomical Center in Abu Dhabi, UAE), Nidhal Guessoum and Dalya Akl
(American University of Sharjah, UAE), report:

As a follow-up for the GRB 240414A (Caputo et al., GCN 36083), where the
optical afterglow was detected by (Schneider et al., GCN 36084; Adami et
al., GCN 36085; de Ugarte Postigo et. al., GCN 36087; Dutton et al., GCN
36097; Turpin et. al., GCN 36101).

We observed the field of this GRB using our 0.36m f/7.7 robotic telescope.
Our observation started on 14 April 2024 at 21:00:26 UT, 18.7 hours after
the GRB trigger. No new optical source was detected within the error box
(Osborne et al., GCN 36102) down to 19.9 magnitude in the stacked image
(total 20x180s, Ic band). The magnitude was estimated using the Atlas
catalogue as a reference, and it is not corrected for galactic extinction.

Our non-detection is consistent with the results of (Niwano et al., GCN
36088; Peretto et al., GCN 36100; Karambelkar et al., GCN 36103).

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