GRB 190821A: T60 Les Makes optical detection of the afterglow

  • Alain Klotz (Creator)
  • K. Noysena (Creator)
  • J.L. Atteia (Creator)
  • Michel Boer (Creator)
  • L. Eymar (Creator)
  • Bruce Gendre (Creator)
  • A. Peyrot (Creator)
  • J. P. Teng (Creator)
  • Pierre Thierry (Creator)



We imaged the field of GRB 190821A detected by SWIFT (trigger 921722)with the T60 tele-operated telescope (D=60cm) located at Les MakesObservatory, Reunion Island, France. The observations started 790safter the GRB trigger. On the first image of 120s (Clear filter) wedetect the optical afterglow compatible with the position of XRT (Lienet al. GCNC 25427). start end R (sec) (sec) 790 910 18.4 +/-0.2 Further images are comming. Magnitudes were estimated with thenearby NOMAD1 stars and are not corrected for galactic dust extinction.
Date made availableAug 2019
PublisherSAO/NASA Astrophysics Data System (ADS)

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