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GCN Circular 25327

Subject
LIGO/Virgo S190814bv: No counterpart candidates in AGILE-MCAL observations
Date
2019-08-15T06:46:03Z (5 years ago)
From
Maura Pillia at INAF <maura.pilia@inaf.it>
M. Pilia (INAF/OA-Cagliari), C.Pittori (SSDC, and INAF/OAR), M. Tavani
(INAF/IAPS, and Univ. Roma Tor Vergata),

M. Cardillo, C. Casentini, G. Piano, A. Ursi (INAF/IAPS), F. Lucarelli, F.
Verrecchia (SSDC, and INAF/OAR),

A. Bulgarelli, V. Fioretti, N. Parmiggiani (INAF/OAS-Bologna), F. Longo
(Univ. Trieste, and INFN Trieste)

report on behalf of the AGILE Team:


In response to the LIGO/Virgo GW event S190814bv at T0 = 2019-08-14
21:10:39 UTC,

a preliminary analysis of the AGILE minicalorimeter (MCAL) triggered data
found no

event candidates within a time interval covering -/+ 15 sec from the
LIGO/Virgo T0.


At the T0, 100% of the S190814bv 90% c.l. localization region was
accessible to

the AGILE-MCAL. Three-sigma upper limits (ULs) are obtained for a 1 s
integration

time at different celestial positions within the accessible S190814bv
localization

region, from a minimum of 2.0E-06 erg cm^-2 to a maximum of 1.1E-06 erg
cm^-2 (assuming

as spectral model a single power law with photon index 1.5).


The AGILE-MCAL detector is a CsI detector with a 4 pi FoV, sensitive in the
energy

range 0.4-100 MeV. Additional analysis of AGILE data is in progress.
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