GCN Circular 21446
Subject
LIGO/Virgo G296853: Super-AGILE observations
Date
2017-08-10T17:54:06Z (8 years ago)
From
Francesco Verrecchia at ASDC, INAF-OAR <verrecchia@asdc.asi.it>
Y. Evangelista (INAF/IAPS), E. Del Monte (INAF/IAPS), F. Verrecchia (SSDC
and INAF/OAR), M. Feroci (INAF/IAPS), E. Costa (ASI), A. Trois
(INAF/OA-Cagliari), G. Piano (INAF/IAPS), M. Pilia (INAF/OA-Cagliari), M.
Tavani (INAF/IAPS, and Univ. Roma Tor Vergata), A. Ursi (INAF/IAPS), M.
Cardillo, A. Bulgarelli (INAF/IASF-Bo), C. Pittori (SSDC and INAF/OAR), N.
Parmiggiani (INAF/IASF-Bo), I. Donnarumma (ASI), A. Giuliani (INAF/IASF-Mi),
F. Lucarelli (ASDC and INAF/OAR), G. Minervini (INAF/IAPS), F. Longo (Univ.
Trieste and INFN Trieste), F. Fuschino (INAF/IASF-Bo), M. Marisaldi
(INAF/IASF-Bo and Bergen University), A. Argan (INAF/IAPS), V. Fioretti
(INAF/IASF-Bo), report on behalf of the AGILE Team:
In response to the LIGO/Virgo GW trigger G296853 (GCN #21431, T0=2017-08-09
08:28:21.747 UTC) we analyzed the AGILE/Super-AGILE (SA) photon-by-photon data
obtaining no significant detection in the 20-60 keV light curve for the
interval T0 +/- 100s with different bin sizes (from 0.05 s to 16 s). The
Super-AGILE FoV covered about 20% of the LIGO 90% localization region,
observed at off-axis angles between 10 and 35 deg.
A 3-sigma upper-limit (UL) in the 20-60 keV energy band has been derived for
an integration time of 1 s, and varies between 2.2 x 10^-8 erg cm^-2 for
10� off-axis position to 7.0 x10^-8 erg cm^-2 at 30� off-axis position.
These measurements were obtained with AGILE observing a large portion of the
sky in spinning mode. Additional analysis of SuperAGILE data is in progress.
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