Improving astrophysical parameter estimation via offline noise subtraction for Advanced LIGO

(The LIGO Scientific Collaboration Instrument Science Authors)

Research output: Contribution to journalArticle

16 Scopus citations


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 (US)
Article number042001
JournalPhysical Review D
Issue number4
StatePublished - Feb 15 2019


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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