Browsing by Author "Raab, F. J."

All-sky search for long-duration gravitational wave transients with initial LIGO

Abbott, B. P.; Abbott, R.; Abbott, T. D.; Abernathy, M. R.; Acernese, F.; e.a. (American Physical Society, 2016-02)

We present the results of a search for long-duration gravitational wave transients in two sets of data collected by the LIGO Hanford and LIGO Livingston detectors between November 5, 2005 and September 30, 2007, and July ...

All-sky search for periodic gravitational waves in the O1 LIGO data

Abbott, B. P.; Abbott, R.; Abbott, T. D.; Acernese, F.; Ackley, K.; e.a. (American Physical Society, 2017-09)

We report on an all-sky search for periodic gravitational waves in the frequency band 20–475 Hz and with a frequency time derivative in the range of [-1.0,+0.1]×10[superscript -8] Hz/s. Such a signal could be produced by ...

All-sky search for short gravitational-wave bursts in the first Advanced LIGO run

Abbott, B. P.; Abbott, R.; Abbott, T. D.; Abernathy, M. R.; Acernese, F.; e.a. (American Physical Society, 2017-02)

We present the results from an all-sky search for short-duration gravitational waves in the data of the first run of the Advanced LIGO detectors between September 2015 and January 2016. The search algorithms use minimal ...

Binary Black Hole Mergers in the First Advanced LIGO Observing Run

Abbott, B. P.; Abbott, R.; Abbott, T. D.; Abernathy, M. R.; Acernese, F.; e.a. (American Physical Society, 2016-10)

The first observational run of the Advanced LIGO detectors, from September 12, 2015 to January 19, 2016, saw the first detections of gravitational waves from binary black hole mergers. In this paper, we present full results ...

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

Abbott, B. P.; Abbott, R.; Abbott, T. D.; Abernathy, M. R.; Ackley, K.; e.a. (American Physical Society, 2017-03)

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 ...

Comprehensive all-sky search for periodic gravitational waves in the sixth science run LIGO data

Abbott, B. P.; Abbott, R.; Abbott, T. D.; Abernathy, M. R.; Acernese, F.; e.a. (American Physical Society, 2016-08)

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

Abbott, B. P.; Abbott, R.; Abbott, T. D.; Acernese, F.; Ackley, K.; e.a. (American Physical Society, 2018-05)

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 ...

Directed search for gravitational waves from Scorpius X-1 with initial LIGO data

Aasi, J.; Abbott, B. P.; Abbott, R.; Abbott, T.; Abernathy, M. R.; e.a. (American Physical Society, 2015-03)

We present results of a search for continuously emitted gravitational radiation, directed at the brightest low-mass x-ray binary, Scorpius X-1. Our semicoherent analysis covers 10 days of LIGO S5 data ranging from 50–550 Hz, ...

Directional Limits on Persistent Gravitational Waves from Advanced LIGO’s First Observing Run

Abbott, B. P.; Abbott, R.; Abbott, T. D.; Abernathy, M. R.; Acernese, F.; e.a. (American Physical Society, 2017-03)

We employ gravitational-wave radiometry to map the stochastic gravitational wave background expected from a variety of contributing mechanisms and test the assumption of isotropy using data from the Advanced Laser ...

Directly comparing GW150914 with numerical solutions of Einstein’s equations for binary black hole coalescence

Abbott, B. P.; Abbott, R.; Abbott, T. D.; Abernathy, M. R.; Acernese, F.; e.a. (American Physical Society, 2016-09)

We compare GW150914 directly to simulations of coalescing binary black holes in full general relativity, including several performed specifically to reproduce this event. Our calculations go beyond existing semianalytic ...

First Demonstration of Electrostatic Damping of Parametric Instability at Advanced LIGO

Blair, Carl; Abbott, Richard; Aston, Stuart; Betzwieser, Joseph; Blair, David; e.a. (American Physical Society, 2017-04)

Interferometric gravitational wave detectors operate with high optical power in their arms in order to achieve high shot-noise limited strain sensitivity. A significant limitation to increasing the optical power is the ...

First low frequency all-sky search for continuous gravitational wave signals

Aasi, J.; Abbott, B. P.; Abbott, R.; Abbott, T. D.; Abernathy, M. R.; e.a. (American Physical Society, 2016-02)

In this paper we present the results of the first low frequency all-sky search of continuous gravitational wave signals conducted on Virgo VSR2 and VSR4 data. The search covered the full sky, a frequency range between 20 ...

First low-frequency Einstein@Home all-sky search for continuous gravitational waves in Advanced LIGO data

Abbott, B. P.; Abbott, R.; Abbott, T. D.; Acernese, F.; Ackley, K.; e.a. (American Physical Society, 2017-12)

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

Abbott, B. P.; Abbott, R.; Abbott, T. D.; Acernese, F.; Ackley, K.; e.a. (American Physical Society, 2017-12)

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, ...

First Search for Nontensorial Gravitational Waves from Known Pulsars

Abbott, B. P.; Abbott, R.; Abbott, T. D.; Acernese, F.; Ackley, K.; e.a. (American Physical Society, 2018-01)

We present results from the first directed search for nontensorial gravitational waves. While general relativity allows for tensorial (plus and cross) modes only, a generic metric theory may, in principle, predict waves ...

First targeted search for gravitational-wave bursts from core-collapse supernovae in data of first-generation laser interferometer detectors

Abbott, B. P.; Abbott, R.; Abbott, T. D.; Abernathy, M. R.; Acernese, F.; e.a. (American Physical Society, 2016-11)

We present results from a search for gravitational-wave bursts coincident with two core-collapse supernovae observed optically in 2007 and 2011. We employ data from the Laser Interferometer Gravitational-wave Observatory ...

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