[vsnet-grb-info 24207] LIGO/Virgo S191129u: upper limits from AGILE/MCAL observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  26306
SUBJECT: LIGO/Virgo S191129u: upper limits from AGILE/MCAL observations
DATE:    19/11/29 15:14:45 GMT
FROM:    Martina Cardillo at INAF-IAPS  <martina.cardillo at inaf.it>

M. Cardillo (INAF/IAPS), C.Pittori (SSDC, and INAF/OAR), M. Tavani
(INAF/IAPS, and Univ. Roma Tor Vergata), 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), 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 S191129u at T0 = 2019-11-29
13:40:29 (UT), 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, about 70% of the S191129u 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 S191129u localization region, from a minimum of
1.64E-06 erg cm^-2  to a maximum of 7.59E-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.