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GCN Circular 16026

GRB 140320A: RATIR Optical and NIR Observations
2014-03-21T23:44:39Z (10 years ago)
Owen Littlejohns at Az State U <>
Owen Littlejohns (ASU), Nat Butler (ASU), Alan M. Watson (UNAM),
Alexander Kutyrev (GSFC), William H. Lee (UNAM), Michael G. Richer
(UNAM), Chris Klein (UCB), Ori Fox (UCB), J. Xavier Prochaska
(UCSC), Josh Bloom (UCB), Antonino Cucchiara (ORAU/GSFC), Eleonora
Troja (GSFC), Enrico Ramirez-Ruiz (UCSC), Jos� A. de Diego (UNAM),
Leonid Georgiev (UNAM), Jes�s Gonz�lez (UNAM), Carlos Rom�n-Z��iga
(UNAM), Neil Gehrels (GSFC), and Harvey Moseley (GSFC) report:

We observed the field of GRB 140320A (Cannizzo, et al., GCN 16000) with
the Reionization and Transients Infrared Camera (RATIR;
on the 1.5m Harold Johnson Telescope at the Observatorio Astron�mico
Nacional on Sierra San Pedro M�rtir from 2014/03 21.42 to 2014/03 21.51
UTC (31.77 to 33.94 hours after the BAT trigger), obtaining a total of
1.40 hours exposure in the r and i bands and 0.56 hours exposure in the
Z, Y, J, and H bands.

For a source within the Swift-XRT error circle, in comparison with 2MASS,
we obtain the following upper limits (3-sigma):

  r     > 22.70
  i     > 22.38
  Z     > 21.23
  Y     > 21.27
  J     > 20.82
  H     > 20.24

These magnitudes are in the AB system and are not corrected for Galactic
extinction in the direction of the GRB.

We thank the staff of the Observatorio Astron�mico Nacional in San Pedro
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