Improving astrophysical parameter estimation via offline noise subtraction for Advanced LIGO

Research output: Contribution to journalArticlepeer-review


  • LIGO Scientific Collaboration Instrument Science

Colleges, School and Institutes

External organisations

  • LIGO Hanford Observatory
  • Massachusetts Institute of Technology
  • Max Planck Institute for Gravitational Physics (Albert Einstein Institute) Am Mühlenberg 1, D-14476 Potsdam, Germany
  • University of Oregon
  • LIGO Livingston Observatory
  • California Institute of Technology
  • Louisiana State University
  • Syracuse University, Syracuse, New York 13244, USA
  • University of Glasgow
  • University of Florida
  • University of Adelaide, Adelaide, SA 5005, Australia
  • Columbia University in the City of New York
  • Universitat de les Illes Balears


The Advanced LIGO detectors have recently completed their second observation run successfully. The run lasted for approximately 10 months and led to multiple new discoveries. The sensitivity to gravitational waves was partially limited by laser noise. Here, we utilize auxiliary sensors that witness these correlated noise sources, and use them for noise subtraction in the time domain data. This noise and line removal is particularly significant for the LIGO Hanford Observatory, where the improvement in sensitivity is greater than 20%. Consequently, we were also able to improve the astrophysical estimation for the location, masses, spins, and orbital parameters of the gravitational wave progenitors.


Original languageEnglish
Article number042001
JournalPhysical Review D
Issue number4
Publication statusPublished - 15 Feb 2019

ASJC Scopus subject areas