GCN Circular 37989
Subject
GRB241030B: GRANDMA/TAROT Upper Limit
Date
2024-10-30T22:54:02Z (a month ago)
From
Cristina Andrade at UMN <andra104@umn.edu>
Via
Web form
A. Klotz (IRAP), C. Andrade (UMN), S. Antier, I. Abdi (AUS), Y. Rajabov (UBAI), M. Masek (FZU), E. de Bruin (UMN), M. Boer; C. Limonta (OCA), S. Karpov (FZU), M. Coughlin (UMN), I. Tosta e Melo (UniCT-DFA), P. Hello, N. Leroy (IJCLAB), P-A Duverne (APC), T. Pradier (Unistra/IPHC), N. Guessoum (AUS), M. Tanasan (NARIT), K. Noysena (NARIT), D.Turpin (CEA-Saclay/Irfu), on behalf of the GRANDMA collaboration:
We observed the field of GRB 241030B, detected by SWIFT (GCN 37981) and SVOM/ECLAIRs (GCN 37984), using TAROT, TCA at Calern and TRE at La Réunion observatories. Observations began 1 minute after T0 for TCA and 10 minutes after the trigger for TRE and both without a filter.
No afterglow candidate was detected the first min with an upper limit of 16.2 mag in r (5 sigma) and the first 15 min with an upper limit of 17.4 in r (5 sigma). It is consistent with Nanshan/HMT detection (GCN 37985), SAO RAS detection (GCN 37987) and AKO (GCN37986).
All the data have been reduced by a single data processing pipeline, STDPipe (Karpov et al., 2022). We use the SkyPortal application (skyportal.io) to monitor our observational campaign.
GRANDMA is a worldwide telescope network (grandma.ijclab.in2p3.fr) devoted to the observation of transients in the context of multi-messenger astrophysics (Antier et al. 2020 MNRAS 497, 5518). Kilonova-Catcher (KNC) is the citizen science program of GRANDMA (http://kilonovacatcher.in2p3.fr/).