Аннотация:MASTER Global robotic net (MASTER-Net:http://observ.pereplet.ru Lipunov etal.,2010,Advances in Astronomy,2010,30L) started Fermi (GCN 35100) and Swift (Evans et al. GCN 35101, GCN 35104, GCN 35106) GRB 231118A error box observation at 2023-11-18 20:19:50 UT by MASTER-SAAO (Lipunov et al. GCN 35107). There is optical counterpart MASTER OT J001919.45-480224.7 with m_OT=19.2m+-0.2m at 2023-11-18 20:26:40 and next 5 expositions (automatic, unfiltered, mlim=19.5), at Skynet position (discovered by Dutton et al. GCN 35103, GCN 35108) Observations started at 70deg.altitude. Observation and reduction will be continued.
https://ui.adsabs.harvard.edu/abs/2023GCN.35109....1L/abstract