AGILE prompt follow-up of the LIGO/Virgo GW trigger event S190521g

In response to the public LIGO/Virgo gravitational wave (GW) alert of the on-going osservative run O3, with trigger event name S190521g at T0 = 2019-05-21 03:02:29 (UT), the AGILE Team performed a quick look follow-up analysis of the AGILE data.

Preliminary AGILE-MCAL and AGILE-GRID upper limits have been published in two GCN CIRCULARS:
GCN #24623: LIGO/Virgo S190521g: No counterpart candidates in AGILE-MCAL observations (C. Casentini et al.)
GCN #24626: LIGO-Virgo S190521g: Upper Limits from AGILE-GRID observations (F. Verrecchia et al.)

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