Results 31 to 40 of about 12,864 (225)

The Advanced LIGO photon calibrators [PDF]

open access: yesReview of Scientific Instruments, 2016
The two interferometers of the Laser Interferometry Gravitational-wave Observatory (LIGO) recently detected gravitational waves from the mergers of binary black hole systems. Accurate calibration of the output of these detectors was crucial for the observation of these events and the extraction of parameters of the sources.
S. Karki   +27 more
openaire   +6 more sources

LIGO as a probe of dark sectors [PDF]

open access: yesPhysical Review D, 2021
We show how current LIGO data is able to probe interesting theories beyond the Standard Model, particularly Dark Sectors where a Dark Higgs triggers symmetry breaking via a first-order phase transition. We use publicly available LIGO O2 data to illustrate how these sectors, even if disconnected from the Standard Model, can be probed by Gravitational ...
Fei Huang   +3 more
openaire   +2 more sources

The science case for LIGO-India [PDF]

open access: yesClassical and Quantum Gravity, 2021
Abstract The global network of gravitational-wave detectors has completed three observing runs with ∼50 detections of merging compact binaries. A third LIGO detector, with comparable astrophysical reach, is to be built in India (LIGO-Aundha) and expected to be operational during the latter part of this decade.
M Saleem   +14 more
openaire   +4 more sources

GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo during the First Half of the Third Observing Run [PDF]

open access: yes, 2021
We report on gravitational-wave discoveries from compact binary coalescences detected by Advanced LIGO and Advanced Virgo in the first half of the third observing run (O3a) between 1 April 2019 15∶00 UTC and 1 October 2019 15∶00 UTC.
et al. (Ligo and Virgo Collaborations)   +2 more
core   +1 more source

Broadband Quantum Enhancement of the LIGO Detectors with Frequency-Dependent Squeezing

open access: yesPhysical Review X, 2023
Quantum noise imposes a fundamental limitation on the sensitivity of interferometric gravitational-wave detectors like LIGO, manifesting as shot noise and quantum radiation pressure noise.
D. Ganapathy   +182 more
doaj   +1 more source

Compact Binary Coalescences: Astrophysical Processes and Lessons Learned

open access: yesGalaxies, 2022
On 11 February 2016, the LIGO and Virgo scientific collaborations announced the first direct detection of gravitational waves, a signal caught by the LIGO interferometers on 14 September 2015, and produced by the coalescence of two stellar-mass black ...
Mario Spera   +2 more
doaj   +1 more source

Can we distinguish quark stars from neutron stars with measurements of global properties? [PDF]

open access: yesEPJ Web of Conferences, 2022
The phase state of the dense stellar matter is an exciting topic in the area of nuclear astrophysics. It may be probed by observed properties of neutron stars from, for example, the currently operating satellites (NICER, Neutron star Interior Composition
Li Ang
doaj   +1 more source

Observation of a kilogram-scale oscillator near its quantum ground state [PDF]

open access: yes, 2009
We introduce a novel cooling technique capable of approaching the quantum ground state of a kilogram-scale system—an interferometric gravitational wave detector.
Blair, D   +999 more
core   +1 more source

Structural thermal noise in gram-scale mirror oscillators

open access: yesNew Journal of Physics, 2012
The thermal noise associated with mechanical dissipation is a ubiquitous limitation to the sensitivity of precision experiments ranging from frequency stabilization to gravitational wave interferometry.
Abraham R Neben   +5 more
doaj   +1 more source

Parameter estimation for compact binary coalescence signals with the first generation gravitational-wave detector network [PDF]

open access: yes, 2013
Compact binary systems with neutron stars or black holes are one of the most promising sources for ground-based gravitational-wave detectors. Gravitational radiation encodes rich information about source physics; thus parameter estimation and model ...
Flaminio, R.   +999 more
core   +1 more source

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