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, Universitat de les Illes Balears
A. Effler, LIGO Livingston
E. Goetz, University of Michigan, Ann Arbor
P. M. Meyers, University of Minnesota Twin Cities
A. Neunzert, University of Michigan, Ann Arbor
M. Oliver, Universitat de les Illes Balears
B. L. Pearlstone, University of Glasgow
V. J. Roma, University of Oregon
R. M.S. Schofield, University of Oregon
V. B. Adya, Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
P. Astone, Istituto Nazionale di Fisica Nucleare - INFN
S. Biscoveanu, Pennsylvania State University
T. A. Callister, California Institute of Technology
N. Christensen, Carleton College, USA
A. Colla, Istituto Nazionale di Fisica Nucleare - INFN
E. Coughlin, Carleton College, USA
M. W. Coughlin, California Institute of Technology
S. G. Crowder, Bellevue College
S. E. Dwyer, LIGO Hanford
H. B. Eggenstein, Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
S. Hourihane, University of Michigan, Ann Arbor
S. Kandhasamy, LIGO Livingston
W. Liu, University of Michigan, Ann Arbor
A. P. Lundgren, Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
A. Matas, University of Minnesota Twin Cities
R. McCarthy, LIGO Hanford
J. McIver, California Institute of Technology
G. Mendell, LIGO Hanford
R. Ormiston, University of Minnesota Twin Cities
C. Palomba, Istituto Nazionale di Fisica Nucleare - INFN
M. A. Papa, Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
O. J. Piccinni, Istituto Nazionale di Fisica Nucleare - INFN
K. Rao, University of Michigan, Ann Arbor

Document Type

Article

Publication Date

4-23-2018

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.

Publication Source (Journal or Book title)

Physical Review D

Recommended Citation

Covas, P., Effler, A., Goetz, E., Meyers, P., Neunzert, A., Oliver, M., Pearlstone, B., Roma, V., Schofield, R., Adya, V., Astone, P., Biscoveanu, S., Callister, T., Christensen, N., Colla, A., Coughlin, E., Coughlin, M., Crowder, S., Dwyer, S., Eggenstein, H., Hourihane, S., Kandhasamy, S., Liu, W., Lundgren, A., Matas, A., McCarthy, R., McIver, J., Mendell, G., Ormiston, R., Palomba, C., Papa, M., Piccinni, O., & Rao, K. (2018). 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) https://doi.org/10.1103/PhysRevD.97.082002