Event type: 
GW
Event time: 
2024-10-12T06:18:26.358476 358476
GCN text: 

LIGO/Virgo S190425z: INTEGRAL prompt observation

We investigated serendipitous INTEGRAL observations carried out at the
time of the LIGO/Virgo burst candidate S190425z. The satellite was
covering the entire probability of the LIGO-Virgo
localization.

LIGO/Virgo S190425z: further analysis of INTEGRAL data

V. Savchenko, C. Ferrigno (ISDC/UniGE, Switzerland)
A. Martin-Carillo (UCD, Dublin)
J. Rodi (IAPS-Roma, Italy)
A. Coleiro (APC, France)
S. Mereghetti (INAF IASF-Milano, Italy)

on behalf of the INTEGRAL multi-messenger collaboration:
https://www.astro.unige.ch/cdci/integral-multimessenger-collaboration

We detect only one possible low-S/N excess after correcting
for the local background variance at 2019-04-25T08:18:05
(T0)+6s, as reported in Martin-Carillo 2019 (GCN 24169).
Its fluence strongly depends on the true source location,
Light Curves: 

INT-LC-LVC S190425z-SPI-ACS

Associated to: 
LVC S190425z
Instrument: 
SPI-ACS
Time range: 
2019-04-25T08:33:11.000000 to 2019-04-25T08:36:41.000000
Energy range: 
75-2000 keV
Light Curve Image: 
https://www.astro.unige.ch/cdci/sites/default/files/integral-transients/lightcurves/2019-04-25T08%3A35%3A01.004612.png
Units: 
counts
Comments: 
Possible signal at To+6s

INT-LC-LVC S190425z-SPI-ACS

Associated to: 
LVC S190425z
Instrument: 
SPI-ACS
Time range: 
2019-04-25T08:34:31.000000 to 2019-04-25T08:35:31.000000
Energy range: 
75-2000 keV
Light Curve Image: 
https://www.astro.unige.ch/cdci/sites/default/files/integral-transients/lightcurves/image.png
Units: 
counts
Comments: 
Optimized
SNR maps: 
INT-ISGRI-SNR-map-LVC S190425z

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