Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to https://gcn.nasa.gov.
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 15230

Subject
GRB 130606A: Chandra observation
Date
2013-09-17T13:12:11Z (11 years ago)
From
Tanmoy Laskar at Harvard U <tanmoylaskar@gmail.com>
W. Fong, T. Laskar, E. Berger, and R. Margutti (Harvard) report:

"We observed GRB 130606A (Ukwatta et al., GCN 14781) with the Chandra ACIS
instrument, starting on 2013 June 17 03:05:37 UT (10.3 days after the GRB
trigger), for a total exposure of 30 ks. We detect a point source at the
position of the Swift/XRT afterglow. Using the spectral parameters from the
Swift/XRT PC-mode spectrum (http://www.swift.ac.uk/xrt_products/00557589)
and a redshift of z=5.91 (Chornock et al. 2013, ApJ, 774, 26; Castro-Tirado
et al., GCN 14796; Lunnan et al., GCN 14798; Xu et al., GCN 14816), we find
an unabsorbed flux of (2.4 +/- 0.4)e-15 erg/(s cm^2) in the 0.3-10 keV
band. This measurement is consistent with an extrapolation of the Swift/XRT
observations and shows a continuing decline in flux with a power-law decay
slope of -1.8 +/- 0.1 between 0.1 and 10 days after the burst.

We thank Harvey Tananbaum for approving our DDT request and the CXC staff
for rapidly arranging and executing the observations."
Looking for U.S. government information and services? Visit USA.gov