Identification and mitigation of narrow spectral artifacts that degrade searches for persistent gravitational waves in the first two observing runs of Advanced LIGO

Authors

P. B. Covas
A. Effler
E. Goetz
P. M. Meyers
A. Neunzert
M. Oliver
B. L. Pearlstone
Volker Quetschke, The University of Texas Rio Grande Valley
Karla E. Ramirez, The University of Texas Rio Grande Valley
Darkhan Tuyenbayev, The University of Texas Rio Grande Valley

Document Type

Article

Publication Date

2018

Abstract

Searches are under way in Advanced LIGO and Virgo data for persistent gravitational waves from continuous sources, e.g. rapidly rotating galactic neutron stars, and stochastic sources, e.g. relic gravitational waves from the Big Bang or superposition of distant astrophysical events such as mergers of black holes or neutron stars. These searches can be degraded by the presence of narrow spectral artifacts (lines) due to instrumental or environmental disturbances. We describe a variety of methods used for finding, identifying and mitigating these artifacts, illustrated with particular examples. Results are provided in the form of lists of line artifacts that can safely be treated as non-astrophysical. Such lists are used to improve the efficiencies and sensitivities of continuous and stochastic gravitational wave searches by allowing vetoes of false outliers and permitting data cleaning.

Comments

© 2018 American Physical Society

Recommended Citation

Covas, P. B., et al. "Identification and mitigation of narrow spectral artifacts that degrade searches for persistent gravitational waves in the first two observing runs of Advanced LIGO." Physical Review D 97.8 (2018): 082002. https://doi.org/10.1103/PhysRevD.97.082002

Publication Title

Physical Review D

DOI

10.1103/PhysRevD.97.082002