{
  "format": "text/plain",
  "eventId": "EP260416a",
  "bibcode": "2026GCN.44336....1H",
  "createdOn": 1776488576881,
  "circularId": 44336,
  "subject": "EP260416a: NOT tentative spectroscopic redshift of z =1.909",
  "submittedHow": "web",
  "submitter": "L. B. He at NAOC <helb@bao.ac.cn>",
  "body": "L.B. He, X. Liu, Z.P. Zhu, S.Q. Jiang, J. An, D. Xu (NAOC), S.Y. Fu (HUST), J. P. U. Fynbo (DAWN/NBI), L. Fuglsang (NOT) report:\n\nWe observed the optical counterpart (e.g., Ducoin et al., 44310) of EP260416a (Hu et al., GCN 44307) using the Nordic Optical Telescope (NOT), equipped with the ALFOSC camera and spectrograph.\n\nObservations started at 2026-04-17T03:56:49, and 2x1800 s spectra were obtained, covering the wavelength range 3800-9000 AA.\n\nThe trace has quite low signal-to-noise. The continuum is throughout the wavelength range. We identify two relatively prominent absorption lines as Mg II doublet at z = 1.909. Based on it, other weak lines as due to Fe II 2600, Fe II 2374, 2383, Al II 1671 are consistent with this redshift.\n\nWe tentatively conclude that this is the redshift of EP260416a."
}