GCN Circular 28668
Subject
GRB 201015A: classification as long GRB
Date
2020-10-17T12:55:23Z (4 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
P. Minaev (IKI) and A. Pozanenko (IKI) report on behalf of larger GRB
follow-up collaboration:
We analyzed GRB 201015A detected by Swift (D'Elia et al., GCN 28632)
using GBM/Fermi spectral data (Fletcher et al., GCN 28663) and redshift
of z = 0.426 (de Ugarte Postigo et al., GCN 28649; Izzo et al., GCN
28661). GRB 201015A has a low luminosity, Eiso = (1.1 +/- 0.2)*10^50
erg, and well consistent with the Ep,i ��� Eiso correlation (Amati
relation) for type II (long) bursts, see [1] for details and Figure at
http://grb.rssi.ru/GRB201015A/GRB201015A_Epi_Eiso.png
The position of the burst is within 1-sigma confidence area of the
cluster of type II (long) bursts on the EH ��� T90,i diagram (see [2] for
details), indicating strong association with type II bursts, see Figure at
http://grb.rssi.ru/GRB201015A/GRB201015A_EH_T90i.png
We encourage follow-up optical observations to search for associated
supernova.
[1] - Minaev et al., MNRAS, 492, 1919, 2020
[2] - Minaev et al., arXiv:2008.12752
