{
  "bibcode": "2021GCN.30304....1M",
  "body": "P. Minaev, A. Pozanenko, I. Chelovekov, S. Grebenev (IKI) report on \nbehalf of IKI GRB FuN:\n\nWe report observations of GRB 210619B with the INTEGRAL/SPI-ACS detector \n(publicly available data). The burst was previously detected in several \nX-/gamma-ray experiments (D'Avanzo et al., GCN 30261; Axelsson et al., \nGCN 30270; Poolakkil et al., GCN 30279; Levin et al., GCN 30283; \nKawakubo et al., GCN 30284).\nGRB 210619B  was detected by SPI-ACS at (UTC) 2021-06-19T23:59:25. Its \nduration in the SPI-ACS energy band (> 80 keV) is T_90 = 50.9 �� 0.1 s. \nComparing the fluxes measured from a number of long-duration GRBs \nsimultaneously recorded by SPI-ACS and Fermi/GBM (Chelovekov et al., in \npreparation) we estimated the GRB 210619B fluence  to be 1.7e-4 erg/cm^2 \nin the 10-1000 keV band (the 95% confidence region which includes \nsystematics was 4.9e-5 - 5.9e-4 erg/cm^2). We did not detect any \nprecursor with durations of 0.1 - 5 s during 500 s prior to the trigger \ntime. Also we did not detect any signature of an extended emission up to \n1000 s after the trigger time. The SPI-ACS light curve of GRB 210619B \ncan be found at\nhttp://grb.rssi.ru/GRB210619B/GRB210619B_SPI-ACS_LC.png",
  "circularId": 30304,
  "createdOn": 1624378673000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 210619B: SPI-ACS/INTEGRAL observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 210619B"
}