Results 21 to 30 of about 88,496 (262)

Measuring the eccentricity of GW170817 and GW190425 [PDF]

open access: yes, 2020
Two binary neutron star mergers, GW170817 and GW190425, have been detected by Advanced LIGO and Virgo. These signals were detected by matched-filter searches that assume the star's orbit has circularized by the time their gravitational-wave emission is ...
A. Lenon, A. Nitz, Duncan A. Brown
semanticscholar   +1 more source

Searching for eccentricity: signatures of dynamical formation in the first gravitational-wave transient catalogue of LIGO and Virgo [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2019
Binary black holes are thought to form primarily via two channels: isolated evolution and dynamical formation. The component masses, spins, and eccentricity of a binary black hole system provide clues to its formation history. We focus on eccentricity,
I. Romero-Shaw, P. Lasky, E. Thrane
semanticscholar   +1 more source

Leaf Morpho-Colorimetric Characterization of Different Grapevine Varieties through Changes on Plant Water Status

open access: yesHorticulturae, 2021
(1) Background: Currently, some ampelographic methods are developing in order to identify grapevine varieties. For this purpose, morpho-colorimetric parameters in leaves have been analyzed by digital imagen analysis, but some environmental conditions may
Gastón Gutiérrez-Gamboa   +6 more
doaj   +1 more source

Study on the Effect of the Position of X-bracing Arrangement in the Steel Structures with a Triangular Plan [PDF]

open access: yesNumerical Methods in Civil Engineering, 2017
In buildings with triangular plan, the center of mass and rigidity cannot geometrically match all possible directions of the earthquake. This will result in torsional moments in the stories causing the building to rotate around the center of rigidity. In
A. Kheyroddin, A. R. Ezoddin
doaj   +1 more source

Behaviour of Slender Hybrid Rubberised Concrete Double Skin Tubular Columns under Eccentric Loading

open access: yesBuildings, 2023
Rubberised concrete, utilised as infill material within single- or double-skin confinements, has emerged as a sustainable solution, offering improved ductility in structures.
Shovona Khusru   +3 more
doaj   +1 more source

The GAPS Programme with HARPS-N at TNG - XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets [PDF]

open access: yes, 2017
We carried out a Bayesian homogeneous determination of the orbital parameters of 231 transiting giant planets (TGPs) that are alone or have distant companions; we employed differential evolution Markov chain Monte Carlo methods to analyse radial-velocity
A. Bonomo   +40 more
semanticscholar   +1 more source

Eccentricity evolution of compact binaries and applications to gravitational-wave physics [PDF]

open access: yes, 2020
Searches for gravitational waves from compact binaries focus mostly on quasicircular motion with the rationale that wave emission circularizes the orbit. Here, we study the generality of this result, when astrophysical environments (e.g., accretion disks)
V. Cardoso, C. F. Macedo, R. Vicente
semanticscholar   +1 more source

Measuring the eccentricity of binary black holes in GWTC-1 by using the inspiral-only waveform [PDF]

open access: yes, 2020
In this paper, we estimate the eccentricity of the 10 BBHs in GWTC-1 by using the inspiral-only BBH waveform template EccentricFD. Firstly, we test our method with simulated eccentric BBHs.
Shichao Wu, Zhoujian Cao, Zong-hong Zhu
semanticscholar   +1 more source

Behavior of Quarry Rock Dust, Fly Ash and Slag Based Geopolymer Concrete Columns Reinforced with Steel Fibers under Eccentric Loading

open access: yesApplied Sciences, 2021
Geopolymer concrete, also known as an earth-friendly concrete, has been under continuous study due to its environmental benefits and a sustainable alternative to conventional concrete construction.
Rana Muhammad Waqas, Faheem Butt
doaj   +1 more source

A New Analytical Method for Modeling the Effect of Assembly Errors on a Motor-Gearbox System

open access: yesEnergies, 2021
The well-known gear tooth defects such as root cracks and flank spalls have been widely investigated in previous studies to model their effects on the time varying mesh stiffness (TVMS) and consequently the dynamic response of motor-gearbox systems ...
Bilal El Yousfi   +3 more
doaj   +1 more source

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