GCN Circular 38208

J. Freeburn (Swinburne/OzGrav), I. Andreoni (UNC), J. Carney (UNC)

We observed the optical counterpart to EP241107a (Zhou et al., GCN 38112
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) with the Goodman High Throughput Spectrograph mounted on the SOAR telescope in imaging mode (Prop. ID: SOAR2024B-021). We took two 300s exposures each in g, r and i-band between 2024-11-11T03:05:18 and 2024-11-11T03:38:26 UTC corresponding to ~3.5 days after the initial trigger.

Our observations do not reveal the optical counterpart associated with EP241107a (Odeh et al., GCN 38115
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; SVOM/C-GFT team, GCN 38116
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; Lipunov et al., GCN 38117
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; Mohan et al., GCN 38118
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; Busmann et al., GCN 38120
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; Adami et al., GCN 38122
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; Quirola-Vasquez et al., GCN 38126
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; Li et al., 38127; Odeh et al., GCN 38128
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; Kong et al., GCN 38131
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; Zheng et al., GCN 38136
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; Pankov et al, GCN 38147
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).  With photometric calibration using the Pan-STARRS1 catalogue, we provide the following AB magnitude upper limits:
g > 22.4
r > 22.9
i > 22.7