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Open AccessJournal ArticleDOI

GW170814: A three-detector observation of gravitational waves from a binary black hole coalescence

B. P. Abbott, +1116 more
- 06 Oct 2017 - 
- Vol. 119, Iss: 14, pp 141101-141101
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TLDR
For the first time, the nature of gravitational-wave polarizations from the antenna response of the LIGO-Virgo network is tested, thus enabling a new class of phenomenological tests of gravity.
Abstract
On August 14, 2017 at 10∶30:43 UTC, the Advanced Virgo detector and the two Advanced LIGO detectors coherently observed a transient gravitational-wave signal produced by the coalescence of two stellar mass black holes, with a false-alarm rate of ≲1 in 27 000 years. The signal was observed with a three-detector network matched-filter signal-to-noise ratio of 18. The inferred masses of the initial black holes are 30.5-3.0+5.7M⊙ and 25.3-4.2+2.8M⊙ (at the 90% credible level). The luminosity distance of the source is 540-210+130  Mpc, corresponding to a redshift of z=0.11-0.04+0.03. A network of three detectors improves the sky localization of the source, reducing the area of the 90% credible region from 1160   deg2 using only the two LIGO detectors to 60  deg2 using all three detectors. For the first time, we can test the nature of gravitational-wave polarizations from the antenna response of the LIGO-Virgo network, thus enabling a new class of phenomenological tests of gravity.

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Journal ArticleDOI

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

B. P. Abbott, +1133 more
- 15 Sep 2019 - 
TL;DR: In this article, a cross-correlation analysis on the data from Advanced LIGO's second observing run (O2) is presented, which combines with the results of the first observing run, and upper limits on the normalized energy density in gravitational waves at the 95% credible level of ΩGW < 6.0 × 10−8 at 25 Hz for a background of compact binary coalescences.
Journal ArticleDOI

Merging black hole binaries: the effects of progenitor's metallicity, mass-loss rate and Eddington factor

TL;DR: In this paper, the authors used the population-synthesis code MOBSE to investigate the demography of merging BHs. And they found a much higher number of mergers from metalpoor progenitors than from metal-rich ones: the number of BHB mergers per unit mass is ~10^-4 Msun^-1 at low metallicity (Z = 0.0002 - 0.002) and drops to ~ 10^-7 Msun+1 at high METALITY (Z ~ 0.02).
Journal ArticleDOI

Black Hole Mergers in Galactic Nuclei Induced by the Eccentric Kozai-Lidov Effect

TL;DR: In this article, the effect of the eccentric Kozai-Lidov mechanism for unequal mass binaries was explored and a set of Monte Carlo simulations on BH-BH binaries in galactic nuclei with quadrupole and octupole-level secular perturbations, general relativistic precession, and gravitational wave emission.
Journal ArticleDOI

Eccentric Black Hole Mergers Forming in Globular Clusters

TL;DR: In this paper, the authors derived the probability for a newly formed binary black hole (BBH) to undergo an eccentric gravitational wave (GW) merger during binary-single interactions inside a stellar cluster and showed that the observable rate of BBH mergers with eccentricity $g 0.1$ at 10 Hz relative to the rate of circular mergers can be as high as $\ensuremath{\sim}5%$ for a typical globular cluster.
Journal ArticleDOI

Deep Neural Networks to Enable Real-time Multimessenger Astrophysics

TL;DR: Deep Filtering is introduced, a new highly scalable method for end-to-end time-series signal processing, based on a system of two deep convolutional neural networks, which is designed for classification and regression to rapidly detect and estimate parameters of signals in highly noisy time- series data streams.
References
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Journal ArticleDOI

Planck 2015 results - XIII. Cosmological parameters

Peter A. R. Ade, +337 more
TL;DR: In this article, the authors present a cosmological analysis based on full-mission Planck observations of temperature and polarization anisotropies of the cosmic microwave background (CMB) radiation.
Journal ArticleDOI

Planck 2015 results. XIII. Cosmological parameters

Peter A. R. Ade, +260 more
TL;DR: In this paper, the authors present results based on full-mission Planck observations of temperature and polarization anisotropies of the CMB, which are consistent with the six-parameter inflationary LCDM cosmology.
Journal ArticleDOI

Observation of Gravitational Waves from a Binary Black Hole Merger

B. P. Abbott, +1011 more
TL;DR: This is the first direct detection of gravitational waves and the first observation of a binary black hole merger, and these observations demonstrate the existence of binary stellar-mass black hole systems.
Journal ArticleDOI

GW151226: observation of gravitational waves from a 22-solar-mass binary black hole coalescence

B. P. Abbott, +973 more
TL;DR: This second gravitational-wave observation provides improved constraints on stellar populations and on deviations from general relativity.
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