{
  "bibcode": "2019GCN.25671....1C",
  "body": "V. Cunningham (U of Maryland), J. D. Neill (Caltech), S. B. Cenko\n\n(NASA GSFC), and R. Walters (Caltech) report on behalf of the\n\nSEDM team:\n\n\nWe observed the optical counterpart to GRB 180620A (Evans, et al.,\n\nGCN 22798)  with the Spectral Energy Distribution Machine (SEDM)\n\non the 60 inch telescope at Palomar Observatory. The SEDM is a\n\nlow resolution (R ~ 100) integral field unit spectrometer with a multi-\n\nband (ugri) rainbow camera imager (see Blagorodnova et al. 2018,\n\nPASP, 130, 035003, and Rigault et al. 2019, A&A, 627, A115).\n\n\nThe SEDM began observing the optical counterpart at 9:37:37 UTC\n\n(63 minutes after the burst trigger time). We performed 2 x 1200 s\n\nexposures over the wavelength range 3800-9200 A. The continuum\n\nemission is well-fit by a power law spectrum with index alpha = 1.4\n\n(f_nu ~ nu^-alpha). We do not confidently identify any obvious\n\nemission or absorption features in the spectrum.",
  "circularId": 25671,
  "createdOn": 1567723593000,
  "email": "vcunning@astro.umd.edu",
  "subject": "GRB 180620A: SEDM Observations",
  "submitter": "Virginia Cunningham at U of MD  <vcunning@astro.umd.edu>",
  "eventId": "GRB 180620A"
}