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INTEGRAL observations are available for 20 out of the 25 events from the complete GWTC-1 sample, consistent with the INTEGRAL duty cycle of about 85%. In particular, the observations are available for 7 out of 11 (64%) of the high-confidence gravitational wave events and 13 out of 14 (93%) of the marginal ones.
For each of the observed events, INTEGRAL was sensitive to the entire LIGO/Virgo localization region. Our preliminary search did not reveal any new significant impulsive gamma-ray counterparts, setting typical upper limits on the 1-s peak flux ranging from 1e-7 to 1e-6 erg/cm2/s in 75-2000 keV energy range.
Detailed analysis and upper limits will be reported in a forthcoming paper.
|Publication date||7 Dec 2018|
|Number of pages||1|
|Publication status||Published - 7 Dec 2018|
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