AGILE prompt follow-up of the LIGO/Virgo GW trigger event S190503bf

In response to the public LIGO/Virgo gravitational wave (GW) alert of the on-going osservative run O3, with trigger event name S190503bf at T0 = 2019-05-03 18:54:04.294 (UT), the AGILE Team performed a quick look follow-up analysis of the AGILE data.
The AGILE exposure at T0 shows that the S190503bf Ligo-Virgo localization region was almost completely occulted by the Earth, however, exposure of the field was obtained both before and after T0.

Preliminary results and AGILE GRID upper limits have been published in two GCN CIRCULARS:
GCN #24379: LIGO/Virgo S190503bf: AGILE MCAL observations (A. Ursi et al.)
GCN #24382: LIGO/Virgo S190503bf: AGILE-GRID Observations (G. Piano et al.)

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