Kocevski et al. (GCN Circ. 15115) reported the GRB detection. At 16:10:28.011 UT on 21 Aug 2013, Fermi-LAT detected high energy emission from GRB 130821A, which was also detected by Fermi-GBM (trigger 398794231/130821674 -- GCN Circ. 15113). Table 1 contains the best reported positions from Swift.
Table 2 is a summary of GCN Circulars about this GRB from observatories other than Swift.
BAT results are not available.
We have analysed xx ks of XRT data for the Fermi/LAT-detected burst: GRB 130821A, from 0 s to 0 s after the Fermi/LAT trigger. The data are entirely in Photon Counting (PC) mode. We cannot determine at the present time whether the source is fading.
UVOT results are not available.
Figure 1. The BAT light curve is unavailable.
RA (J2000) | Dec (J2000) | Error | Note | Reference |
---|---|---|---|---|
20h56m38.44s | -12°02'36.53" | XRT | Page et al. GCN Circ. 15123 |
Band | Authors | GCN Circ. | Subject | Observatory | Notes |
---|---|---|---|---|---|
Optical | Xu et al. | 15124 | Weihai optical upper limit | Weihai | upper limits |
Gamma-ray | Jenke | 15113 | Fermi GBM Detection | Fermi GBM | Epeak = 165 ± 5 keV |
Gamma-ray | Kocevski et al. | 15115 | Fermi-LAT detection of a burst | Fermi LAT | detection |
Gamma-ray | Golenetskii et al. | 15125 | Konus-Wind observation | Konus-Wind | Epeak = 260 ± 47 keV |
Gamma-ray | Hurley et al. | 15127 | IPN triangulation | IPN | |
Gamma-ray | Hurley et al. | 15132 | IPN triangulation | IPN |