{
  "bibcode": "2014GCN.17110....1P",
  "body": "A. Pozanenko (IKI), P. Minaev (IKI),  V. Vybornov (IKI), A. Volnova \n(IKI), E. Mazaeva (IKI)  report:\n\nWe inspected the SPI-ACS data  of INTEGRAL observatory covering trigger \ntime of the Swift GRB 141121A (Lien et al., GCN 17075) and MAXI/GSC \n(Honda et al., GCN 17077). At the BAT/Swift trigger time of the GRB \n141121A (UT) T0=03:50:43 we do not found any significant emission above \nbackground in SPI-ACS data in different time scales (0.05 s, 5 s, and 50 \ns).  We also do not find any activity at the second BAT episode (T0+550 \ns to T0+675 s).\n\nAt the time of about T0-800 s we found in SPI-ACS data the activity \ncorresponding to the first Konus-Wind episode (Golenetskii et al., GCN \n17108). The duration of the activity is about 200 s and clearly visible \nin SPI-ACS light curve. The start time of the maximal count rate of \nSPI-ACS light curve (binning with 50 s bin duration) is T0-725 s. In \nboth cases TO and T0-725 s the boresight of SPI-ACS is the same and \nequal to 119 degrees. If this episode is related to the GRB 141121A and \ntaking into account SPI-ACS energy threshold (>~ 80 keV) one can suggest \nthe this episode of GRB 141121A is harder than main activity detected by \nBAT/Swift.\n\nWe do not detect any significant activity at the time of the MAXI/GSC \ndetection (Honda et al., GCN 17077).\n\nThe SPI-ACS light curves can be found at\n\nhttp://grb.rssi.ru/GRB141121A/grb141121_spi-acs_50sec.png\nhttp://grb.rssi.ru/GRB141121A/grb141121_spi-acs_5sec.png",
  "circularId": 17110,
  "createdOn": 1417198204000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 141121A: SPI-ACS/INTEGRAL observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 141121A"
}