[vsnet-grb-info 22429] LIGO/Virgo S190513bm: AGILE GRID observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  24528
SUBJECT: LIGO/Virgo S190513bm: AGILE GRID observations
DATE:    19/05/14 00:13:57 GMT
FROM:    Fabrizio Lucarelli at SSDC/INAF-OAR  <fabrizio.lucarelli at ssdc.asi.it>

F. Lucarelli (SSDC, and INAF-OAR), C. Casentini (INAF/IAPS), M. Tavani (INAF/IAPS,
and Univ. Roma Tor Vergata), C. Pittori, F. Verrecchia (SSDC, and INAF-OAR),
M. Cardillo, G. Piano, A. Ursi (INAF/IAPS), A. Bulgarelli, N. Parmiggiani
(INAF/OAS-Bologna), M. Pilia (INAF/OA-Cagliari), F. Longo (Univ. Trieste, and
INFN Trieste) report on behalf of the AGILE Team:

In response to the LIGO-Virgo GW event S190513bm at T0 = 2019-05-13 20:54:28 (UT)
(GCN #24522), we performed an analysis of the AGILE Gamma-Ray Imaging Detector
(GRID) data.

An analysis of the data in the energy range 50 MeV - 10 GeV was performed over
the time interval (T0 - 100s; T0), where an exposure of about 40% of the S190513bm
90% c.l. localization region was available.

The following preliminary GRID values of 3-sigma upper limits (UL) are obtained:

from 5.0e-08 to 5.0e-07 erg cm^-2 s^-1.

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