[vsnet-grb-info 26568] GRB 201015A: classification as long GRB

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  28668
SUBJECT: GRB 201015A: classification as long GRB
DATE:    20/10/17 12:55:23 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at 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