This page covers the period from the 1st to the 25th of August, 2017, during which the Virgo detector took data alongside the two LIGO detectors at the end of the O2 data-taking period. It displays summary information regarding the detector status and performance over time.

Virgo completed its multi-year upgrade program, called "Advanced Virgo", at the end of 2016. After several months of intense commissioning, its sensitivity and duty cycle became good enough to join LIGO for a common data period.

For more information, see the LOSC webpages.

Detector status

Detector status

Status of the Advanced Virgo detector from August 1st to August 25, 2017. Top plot: stripchart of the detector status versus time; bottom plot: corresponding pie chart. Advanced Virgo is taking useful data for physics analysis when its status is 'Science' (green color). In average, its duty cycle over the whole data taking period is 85%.

Duty cycle

Duty cycle

More information on the Advanced Virgo duty cycle -- the fraction of the time during which the detector status is 'Science', meaning that it is taking useful science data. Top plot: daily duty cycle; bottom plot: integrated duty cycle over time. The dashed lines show the 100%, 75% and 50% duty cycle lines respectively.

BNS range

BNS range

Evolution of the Advanced Virgo binary-neutron star (BNS) range (in Mpc) versus time. The median range over the whole data taking period is 26.1 Mpc.

Universe time-integrated volume

ITF Mode

This plot shows a figure of merit of the time-integrated volume of Universe probed by the Advanced detector when looking for BNS gravitational-wave signals. Left plot: daily time-integrated volume; right plot: evolution of the cumulative time-integrated volume during the whole data taking period.