LIGO/Virgo S190828l: No counterpart candidates in AGILE-MCAL observations
Abstract
In response to the LIGO/Virgo GW event S190828l at T0 = 2019-08-28 06:55:09 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 50% of the S190828l 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 S190828l localization region, from a minimum of 1.83E-06 erg cm^-2 to a maximum of 6.33E-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.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- August 2019
- Bibcode:
- 2019GCN.25510....1L