GCN Circular 20867
Subject
LIGO/Virgo G277583: INTEGRAL was inactive at the time of the event
Date
2017-03-14T13:15:44Z (8 years ago)
From
Volodymyr Savchenko at APC,Paris <savchenk@apc.in2p3.fr>
V. Savchenko (ISDC, University of Geneva, CH)
on behalf of the INTEGRAL group:
S. Mereghetti (IASF-Milano, Italy),
C. Ferrigno ((ISDC, University of Geneva, CH),
E. Kuulkers (ESTEC/ESA, The Netherlands),
A. Bazzano (IAPS-Roma, Italy), E. Bozzo,
T. J.-L. Courvoisier (ISDC, University of Geneva, CH)
S. Brandt (DTU - Denmark) R. Diehl (MPE-Garching, Germany)
L. Hanlon (UCD, Ireland) P. Laurent (APC, Saclay/CEA, France)
A. Lutovinov (IKI, Russia) J.P. Roques (CESR, France)
R. Sunyaev (IKI, Russia) P. Ubertini (IAPS-Roma, Italy)
The INTEGRAL spacecraft has a highly elliptical orbit and the
instruments are switched off around the perigee passage, every 2.6
days, to prevent radiation-induced damages. Unfortunately, at the time
of the LIGO/Virgo trigger G211117 (2017-03-13 22:40:09.59 UTC) the
spacecraft was preparing to the perigee passage between the orbits
number 1792 and 1793, and no scientific instrument data are available
after 2017-03-13T22:25:25.