Improving astrophysical parameter estimation via offline noise subtraction for Advanced LIGO

J. C. Driggers; E. D. Hall; J. Hanson; J. Hough; J. Liu; B. Smith; N. A. Lockerbie; L. Zhang; LIGO Scientific Collaboration

doi:10.1103/PhysRevD.99.042001

Improving astrophysical parameter estimation via offline noise subtraction for Advanced LIGO

J. C. Driggers^*, E. D. Hall, J. Hanson, J. Hough, J. Liu, B. Smith, N. A. Lockerbie, L. Zhang, LIGO Scientific Collaboration

^*Corresponding author for this work

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Abstract

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 language	English
Article number	042001
Number of pages	9
Journal	Physical Review D
Volume	99
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevD.99.042001
Publication status	Published - 20 Feb 2019

Keywords

LIGO detectors
gravitational waves
noise subtraction

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abstract = "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.",

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AU - Hough, J.

AU - Liu, J.

AU - Smith, B.

AU - Lockerbie, N. A.

AU - Zhang, L.

AU - LIGO Scientific Collaboration

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N2 - 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.

AB - 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.

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Improving astrophysical parameter estimation via offline noise subtraction for Advanced LIGO

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Keywords

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