LIGO/Virgo S200213t: upper limits from AGILE/GRID observations

Journal
Date Issued
2020
Author(s)
Longo, F.
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Agile Team
Abstract
In response to the LIGO-Virgo GW event S200213t at T0 = 2020-02-13 04:10:40.328 (UTC) a preliminary analysis of the AGILE exposure at T0 shows that the Gamma-Ray Imaging Detector (GRID) exposure covered the 32% of the 90% c.l. localization region (LR) (4% of 90% c.l. LR is occulted by Earth). We performed an analysis of the GRID data in the energy range 50 MeV - 10 GeV on T0, where good exposure of the S200213t 90% c.l. LR was available. No candidate gamma-ray transient was detected. The following preliminary GRID values of 3-sigma upper limit (UL) are obtained: from 8.7e-07 to 7.2e-06 erg cm^-2 s^-1, with exposure of about 32% of the LR over the time interval ( T0 -2s ; T0 + 2s ); from 3.3e-07 to 6.4e-06 erg cm^-2 s^-1, with exposure of about 38% of the LR over the time interval ( T0s ; T0 + 10s ); from 3e-08 to 1.5e-06 erg cm^-2 s^-1, with exposure of about 48% of the LR over the time interval ( T0s ; T0 + 100s ); These measurements were obtained with AGILE observing a large portion of the sky in spinning mode. Additional analysis of AGILE data is in progress.
Volume
27055
Start page
1
Uri
Url
Ads BibCode
2020GCN.27055....1L
Rights
open.access
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