{
  "version": 2,
  "format": "text/plain",
  "eventId": "GRB 261010A",
  "submitter": "Dmitry Frederiks at Ioffe Institute <fred@mail.ioffe.ru>",
  "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\nUsing the Konus-Wind spectrum of the short initial pulse of GRB 261010A\n(Ep = 847(-194,+299) keV; GCN 45925) and the KW-measured fluence of this\npulse (5.91+/-1.06)E-6 erg/cm2, we estimate the pulse's rest-frame energetics\nat two possible redshifts:\n\n- assuming the redshift z= 0.070 (Corcoran et al., GCN 45912),\nthe isotropic energy release E_iso to (7.1 ± 1.3)x10^49 erg,\nthe isotropic peak luminosity L_iso to (7.8 ± 1.4)x10^49 erg/s,\nand the rest-frame peak energy Ep,z to 906(-208,+320) keV.\n\n- at the redshift z=0.785 (Castro-Tirado et al., GCN 45928),\nE_iso is (1.02 ± 0.18)x10^52 erg, L_iso is (1.85 ± 0.3)x10^52 erg/s,\nand Ep,z is 1512(-346,+534) keV.\n\nWith the obtained estimates, GRB 261010A is an outlier (outside 90% prediction bands)\nof both 'Amati' and 'Yonetoku' relations derived for the sample of >300 long KW GRBs\nwith known redshifts (Tsvetkova et al., 2017; Tsvetkova et al., 2021),\nhowever is consistent with Type I (short/hard) GRB initial pulse energetics,\nplotted in the same rest-frame planes.\nSee http://www.ioffe.ru/LEA/GRBs/GRB261010_T69424/GRB261010A_rest_frame.pdf\n\nThis supports the hypothesis that the burst represents a merger-driven event\n(Zhu and Tam, GCN 45932; Maccary et al., GCN 45944), a scenario proposed\ntaking into account other  properties of the burst prompt emission.\n\nAll the quoted errors are estimated at the 68% confidence level.\nAll the presented results are preliminary.\n",
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Dmitry Frederiks at Ioffe Institute <ddfrederiks@gmail.com>",
  "editedOn": 1792009857672,
  "createdOn": 1791916448874,
  "eventType": [],
  "circularId": 45945,
  "subject": "GRB 261010A: initial pulse rest-frame energetics from Konus-Wind detection",
  "submittedHow": "email"
}