R. Kennedy

Properties and Astrophysical Implications of the 150 M Binary Black Hole Merger GW190521

R. Abbott, T. Abbott, S. Abraham, F. Acernese et autres

The gravitational-wave signal GW190521 is consistent with a binary black hole merger source at redshift 0.8 with unusually high component masses, $85^{+21}_{-14}\\,M_{\\odot}$ and $66^{+17}_{-18}\\,M_{\\odot}$, compared to previously reported events, and shows mild evidence for spin-induced orbital precession. The primary falls in the …

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Constraints on cosmic strings using data from the first Advanced LIGO observing run

B. P. Abbott, R. Abbott, T. D. Abbott, F. Acernese et autres

Cosmic strings are topological defects which can be formed in grand unified theory scale phase transitions in the early universe. They are also predicted to form in the context of string theory. The main mechanism for a network of Nambu-Goto cosmic strings …

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

P. B. Covas, A. Effler, E. Goetz, P. M. Meyers et autres

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 …

First narrow-band search for continuous gravitational waves from known pulsars in advanced detector data

B. P. Abbott, R. Abbott, T. D. Abbott, F. Acernese et autres

Spinning neutron stars asymmetric with respect to their rotation axis are potential sources of continuous gravitational waves for ground-based interferometric detectors. In the case of known pulsars a fully coherent search, based on matched filtering, which uses the position and rotational parameters …

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A gravitational-wave standard siren measurement of the Hubble constant

B. P. Abbott, R. Abbott, T. D. Abbott, F. Acernese et autres

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Calibration of the Advanced LIGO detectors for the discovery of the binary black-hole merger GW150914

B. P. Abbott, R. Abbott, T. D. Abbott, M. R. Abernathy et autres

In Advanced LIGO, detection and astrophysical source parameter estimation of the binary black hole merger GW150914 requires a calibrated estimate of the gravitational-wave strain sensed by the detectors. Producing an estimate from each detector's differential arm length control loop readout signals requires …

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Search for transient gravitational waves in coincidence with short-duration radio transients during 2007–2013

B. P. Abbott, R. Abbott, T. D. Abbott, M. R. Abernathy et autres

We present an archival search for transient gravitational-wave bursts in coincidence with 27 single-pulse triggers from Green Bank Telescope pulsar surveys, using the LIGO, Virgo, and GEO interferometer network. We also discuss a check for gravitational-wave signals in coincidence with Parkes fast …

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