GCN Circular 25940

Subject

GRB 191001B: Optical Upper Limits with LCO

Event

GRB 191001B

Date

2019-10-03T18:30:36Z (6 years ago)

From

Robert Strausbaugh at U. of the Virgin Islands <robert.strausbaugh@uvi.edu>

R. Strausbaugh (U. of the Virgin Islands), A. Cucchiara (U. of the Virgin Islands/College of Marin) report on behalf of a larger collaboration:

We observed Swift GRB 191001B (Barthelmy et al., GCN 25902Loading...
 
 ) with the LCO 1-m Sinistro instrument on October 2, from 01:23 to 01:47 UT (corresponding to 5.73 to 6.2 hours from the GRB trigger time) with the SDSS r� and i� filters.

We performed a series of 5x120s exposures in each band. We do not detect any fading sources over the course of our observations in a 26.5' x 26.5' field of view centered around the Swift coordinates (Barthelmy et al., GCN 25902Loading...
 
 ).  Using the USNO-B.1 catalog as reference, we obtain the following 3-sigma upper limits:


r > 18.82

i > 16.98

These observations were possible thanks to the USVI NASA-EPSCoR Research Infrastructure Development (RID) grant NNX16AL44A.