Improving astrophysical parameter estimation via offline noise subtraction for Advanced LIGO

J. C. Driggers et al. (The LIGO Scientific Collaboration Instrument Science Authors)
Phys. Rev. D 99, 042001 – Published 20 February 2019

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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  • Received 11 July 2018

DOI:https://doi.org/10.1103/PhysRevD.99.042001

© 2019 American Physical Society

Physics Subject Headings (PhySH)

Gravitation, Cosmology & Astrophysics

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Vol. 99, Iss. 4 — 15 February 2019

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