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Search for the isotropic stochastic background using data from Advanced LIGO's second observing run

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Search for the isotropic stochastic background using data from Advanced LIGO's second observing run. / LIGO Scientific Collaboration and Virgo Collaboration.

In: Physical Review D, Vol. 100, No. 6, 061101, 15.09.2019.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

LIGO Scientific Collaboration and Virgo Collaboration 2019, 'Search for the isotropic stochastic background using data from Advanced LIGO's second observing run', Physical Review D, vol. 100, no. 6, 061101. https://doi.org/10.1103/PhysRevD.100.061101

APA

LIGO Scientific Collaboration and Virgo Collaboration (2019). Search for the isotropic stochastic background using data from Advanced LIGO's second observing run. Physical Review D, 100(6), [061101]. https://doi.org/10.1103/PhysRevD.100.061101

Vancouver

LIGO Scientific Collaboration and Virgo Collaboration. Search for the isotropic stochastic background using data from Advanced LIGO's second observing run. Physical Review D. 2019 Sep 15;100(6). 061101. https://doi.org/10.1103/PhysRevD.100.061101

Author

LIGO Scientific Collaboration and Virgo Collaboration. / Search for the isotropic stochastic background using data from Advanced LIGO's second observing run. In: Physical Review D. 2019 ; Vol. 100, No. 6.

Bibtex

@article{3a4e95f876894718afea17fad047b124,
title = "Search for the isotropic stochastic background using data from Advanced LIGO's second observing run",
abstract = "The stochastic gravitational-wave background is a superposition of sources that are either too weak or too numerous to detect individually. In this study, we present the results from a cross-correlation analysis on data from Advanced LIGO{\textquoteright}s second observing run (O2), which we combine with the results of the first observing run (O1). We do not find evidence for a stochastic background, so we place upper limits on the normalized energy density in gravitational waves at the 95% credible level of Ω GW < 6.0 × 10 − 8 for a frequency-independent (flat) background and Ω GW < 4.8 × 10 − 8 at 25 Hz for a background of compact binary coalescences. The upper limit improves over the O1 result by a factor of 2.8. Additionally, we place upper limits on the energy density in an isotropic background of scalar- and vector-polarized gravitational waves, and we discuss the implication of these results for models of compact binaries and cosmic string backgrounds. Finally, we present a conservative estimate of the correlated broadband noise due to the magnetic Schumann resonances in O2, based on magnetometer measurements at both the LIGO Hanford and LIGO Livingston observatories. We find that correlated noise is well below the O2 sensitivity.",
keywords = "General Relativity and Quantum Cosmology",
author = "{LIGO Scientific Collaboration and Virgo Collaboration} and M. Pitkin",
year = "2019",
month = sep,
day = "15",
doi = "10.1103/PhysRevD.100.061101",
language = "English",
volume = "100",
journal = "Physical Review D",
issn = "1550-7998",
publisher = "American Physical Society",
number = "6",

}

RIS

TY - JOUR

T1 - Search for the isotropic stochastic background using data from Advanced LIGO's second observing run

AU - LIGO Scientific Collaboration and Virgo Collaboration

AU - Pitkin, M.

PY - 2019/9/15

Y1 - 2019/9/15

N2 - The stochastic gravitational-wave background is a superposition of sources that are either too weak or too numerous to detect individually. In this study, we present the results from a cross-correlation analysis on data from Advanced LIGO’s second observing run (O2), which we combine with the results of the first observing run (O1). We do not find evidence for a stochastic background, so we place upper limits on the normalized energy density in gravitational waves at the 95% credible level of Ω GW < 6.0 × 10 − 8 for a frequency-independent (flat) background and Ω GW < 4.8 × 10 − 8 at 25 Hz for a background of compact binary coalescences. The upper limit improves over the O1 result by a factor of 2.8. Additionally, we place upper limits on the energy density in an isotropic background of scalar- and vector-polarized gravitational waves, and we discuss the implication of these results for models of compact binaries and cosmic string backgrounds. Finally, we present a conservative estimate of the correlated broadband noise due to the magnetic Schumann resonances in O2, based on magnetometer measurements at both the LIGO Hanford and LIGO Livingston observatories. We find that correlated noise is well below the O2 sensitivity.

AB - The stochastic gravitational-wave background is a superposition of sources that are either too weak or too numerous to detect individually. In this study, we present the results from a cross-correlation analysis on data from Advanced LIGO’s second observing run (O2), which we combine with the results of the first observing run (O1). We do not find evidence for a stochastic background, so we place upper limits on the normalized energy density in gravitational waves at the 95% credible level of Ω GW < 6.0 × 10 − 8 for a frequency-independent (flat) background and Ω GW < 4.8 × 10 − 8 at 25 Hz for a background of compact binary coalescences. The upper limit improves over the O1 result by a factor of 2.8. Additionally, we place upper limits on the energy density in an isotropic background of scalar- and vector-polarized gravitational waves, and we discuss the implication of these results for models of compact binaries and cosmic string backgrounds. Finally, we present a conservative estimate of the correlated broadband noise due to the magnetic Schumann resonances in O2, based on magnetometer measurements at both the LIGO Hanford and LIGO Livingston observatories. We find that correlated noise is well below the O2 sensitivity.

KW - General Relativity and Quantum Cosmology

U2 - 10.1103/PhysRevD.100.061101

DO - 10.1103/PhysRevD.100.061101

M3 - Journal article

VL - 100

JO - Physical Review D

JF - Physical Review D

SN - 1550-7998

IS - 6

M1 - 061101

ER -