{
  "bibcode": "2022GCN.32033....1F",
  "body": "D. Frederiks, A.Lysenko, A. Ridnaia, D. Svinkin,\nA. Tsvetkova,  M. Ulanov, and T. Cline,\non behalf of the Konus-Wind team, report:\n\nThe long GRB 220511A (AGILE detection: Ursi et al., GCN 32021;\nAstroSat CZTI detection: Gopalakrishnan  et al., GCN 32028;\nFermi-GBM observation: Veres & Meegan, GCN 32030)\ntriggered Konus-Wind (KW) at T0=49319.624 s UT (13:41:59.624).\n\nThe burst light curve shows a single emission pulse,\nwhich starts at ~T0-1 s and has a total duration of ~6 s.\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB220511_T49319/\n\nAs observed by Konus-Wind, the burst had\na fluence of (7.8 �� 1.5)x10^-6 erg/cm^2 and\na 64-ms peak energy flux, measured from T0 + 0.832 s,\nof (4.2 �� 0.7)x10^-6 erg/cm^2/s (both in the 20 keV - 10 MeV energy range).\n\nThe time-integrated spectrum (measured from T0 to T0+8.448 s)\nis best fit in the 20 keV - 1.5 MeV range\nby the GRB (Band) function with the following model parameters:\nthe low-energy photon index alpha = -0.75 (-0.19,+0.42),\nthe high energy photon index beta = -3.1 (-6.9,+0.8),\nthe peak energy Ep = 159 (-34,+21) keV,\nchi2 = 57/59 dof.\n\nAll the quoted errors are estimated at the 90% confidence level.\nAll the presented results are preliminary.",
  "circularId": 32033,
  "createdOn": 1652447088000,
  "email": "fred@mail.ioffe.ru",
  "subject": "Konus-Wind detection of GRB 220511A",
  "submitter": "Dmitry Frederiks at Ioffe Institute  <fred@mail.ioffe.ru>",
  "eventId": "GRB 220511A"
}