{
  "bibcode": "2019GCN.24492....1M",
  "body": "Daniele B. Malesani (DAWN/NBI and DARK/NBI), Dong Xu (NAOC/CAS), Joonas \nViuho (NOT and DAWN/NBI) report on behalf of a larger collaboration:\n\nWe observed the field of the Swift and Fermi GRB 190511A (Bernardini et \nal., GCN 24472; von Kienlin, GCN 24482; Axelsson et al., GCN 24483) \nusing the Nordic Optical Telescope (NOT) equipped with the AlFOSC \ncamera. Observations started in twilight and were carried out at high \nairmass due to the poor target visibility.\n\nJust outside the enhanced XRT error position (Goad et al., GCN 24481), \nwe clearly detect a source not visible in the archival Pan-STARRS images \nof the same area, which we suggest to be the optical afterglow of GRB \n190511A. Its coordinates are (J2000):\n\nRA = 08:25:46.46\nDec = -20:15:33.4\n\nUsing nearby stars from the Pan-STARRS survey as calibrators, we measure \nfor the afterglow a magnitude r = 20.89 +- 0.09 AB, at a mean epoch May \n11.8648 UT (13.51 hr after the trigger).",
  "circularId": 24492,
  "createdOn": 1557612803000,
  "email": "malesani@dark-cosmology.dk",
  "subject": "GRB 190511A: NOT optical afterglow",
  "submitter": "Daniele Malesani at Dark Cosmology Centre, Niels Bohr Inst  <malesani@dark-cosmology.dk>",
  "eventId": "GRB 190511A"
}