GW170608

This page has been prepared by the LIGO Scientific Collaboration (LSC) and the Virgo Collaboration. The event was observed by data from the LIGO Hanford (H1) and LIGO Livingston (L1) detectors. Note: Virgo joined the O2 observing run on August 1st, 2017. At the time of the event the Advanced Virgo detector was in a commissioning phase in preparation for the O2 science run. The detector was operating with limited sensitivity. No fully characterized strain data from Virgo is available for this event Data usage notes: Please Read This First! The data are provided in three formats. HDF5 , Frame (.gwf) , and gzipped ascii text. Many data analysis environments can read in data from HDF5 files, including Python (see the h5py package), MATLAB, C/C++, and IDL. Tutorials provide an introduction to strain data. Software libraries are available for data analysis. After data collection, several independently-measured terrestrial contributions to the detector noise were subtracted from the LIGO data using Wiener filtering. This subtraction removed calibration lines and 60 Hz AC power mains harmonics from both LIGO data streams. At times near GW170608, the sensitivity of LIGO-Hanford was particularly improved by the subtraction of laser pointing noise; several broad peaks in the 150 - 800 Hz region were effectively removed, increasing the Binary Neutron Star horizon distance of that detector by typically 25%. For reference: 32 seconds (event signal reaches peak amplitude 16.49 seconds ± 10 msec from start†) hdf5 gwf txt.gz hdf5 gwf txt.gz 512 seconds (event signal reaches peak amplitude 256.49 seconds ± 10 msec from start†) hdf5 gwf txt.gz hdf5 gwf txt.gz 32 seconds (event signal reaches peak amplitude 16.49 seconds ± 10 msec from start†) hdf5 gwf txt.gz hdf5 gwf txt.gz 512 seconds (event signal reaches peak amplitude 256.49 seconds ± 10 msec from start†) hdf5 gwf txt.gz hdf5 gwf txt.gz 32 seconds(event signal reaches peak amplitude 16.49 seconds ± 10 msec from start†) hdf5 gwf txt.gz hdf5 gwf txt.gz 4096 seconds(event signal reaches peak amplitude 2048.49 seconds ± 10 msec from start†) hdf5 gwf txt.gz hdf5 gwf txt.gz 32 seconds (event signal reaches peak amplitude 16.49 seconds ± 10 msec from start†) hdf5 gwf txt.gz hdf5 gwf txt.gz 4096 seconds (event signal reaches peak amplitude 2048.49 seconds ± 10 msec from start†) hdf5 gwf txt.gz hdf5 gwf txt.gz See the About the Detectors Page to learn about the instruments and collaborations.