Back

GCN Circular 18001

Subject

GRB 150710A: RATIR Observations

Date

2015-07-10T04:58:33Z (9 years ago)

From

Nat Butler at Az State U <natbutler@asu.edu>

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), Owen Littlejohns (ASU), 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 possible GRB 150710A (trigger 648437; Bernardini,
et al., GCN 18000Not found
 
 
) with the Reionization and Transients Infrared Camera
(RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the
Observatorio Astron��mico Nacional on Sierra San Pedro M��rtir from 2015/07
10.16 to 2015/07 10.20 UTC (3.47 to 4.31 hours after the BAT trigger),
obtaining a total of 0.71 hours exposure in the r, i, and z bands.

For a source within the Swift-XRT error circle, in comparison with the SDSS
DR9 catalog, we obtain the following upper limits (3-sigma):

  r > 23.4
  i > 23.2
  z > 19.4

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

We thank the staff of the Observatorio Astron��mico Nacional in San Pedro
M��rtir.  Further observations are ongoing.