[vsnet-grb-info 22584] GRB 190530A: AGILE/GRID analysis

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  24683
SUBJECT: GRB 190530A: AGILE/GRID analysis
DATE:    19/05/30 20:36:47 GMT
FROM:    Francesco Verrecchia at ASDC  <francesco.verrecchia at ssdc.asi.it>

F. Verrecchia, F. Lucarelli, C. Pittori (SSDC, and INAF/OAR), G. Piano (INAF/IAPS),
M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata), M. Cardillo, Y. Evangelista,
A. Ursi (INAF/IAPS), (SSDC, and INAF/OAR), A. Bulgarelli, V. Fioretti, F. Fuschino
(INAF/OAS), M. Marisaldi (INAF/OAS, and Bergen University), M. Pilia, A. Trois
(INAF/OA-Cagliari), F. Longo (Univ. Trieste and INFN Trieste), I. Donnarumma
(ASI), A. Giuliani (INAF/IASF-Mi), report on behalf of the AGILE Team:

The Gamma-Ray Imaging Detector (GRID) of AGILE detected a gamma-ray transient
temporally coincident with the long  GRB 190530A reported by Lucarelli et al.,
GCN #24678 and also detected and localized by Fermi/GBM (GCN #24676) and
Fermi/LAT (GCN #24679).

A preliminary GRID analysis in the energy range 30 MeV - 1 GeV shows a
detection with a statistical significance of about 4 sigma, at the sky position
R.A., Decl. (J2000): 120,+34 ± 5 deg (Galactic coordinates l,b: 187,+28 deg),
over a time integration of 500 s starting from the T0 of GRB 190530A.

This preliminary estimated position was above 30 deg from the GRID boresight.

These measurements were obtained with AGILE observing a large portion of
the sky in spinning mode. Additional analysis of AGILE data is in progress.