Results 111 to 120 of about 3,160,742 (266)

A Targeted Search for Variable Gravitationally Lensed Quasars

open access: yesThe Astrophysical Journal
We present a pipeline to identify photometric variability within strong gravitationally lensing candidates, in the Dark Energy Spectroscopic Instrument Legacy Imaging Surveys.
William Sheu   +6 more
doaj   +1 more source

Engineering an artificial trachea: Quantitative benchmarks and modular strategies for mechanics, epithelialization, and vascular integration

open access: yesFlexMat, EarlyView.
In this work, we first examine the limitations of surgical repair and stenting, including migration, granulation, mucus plugging, and infection. We then translate these failures into engineering constraints involving geometry, mechanics, fixation, degradation, junctional stress, and remodeling.
Yiwei Xu   +6 more
wiley   +1 more source

Strong deflection gravitational lensing

open access: yes, 2012
In this work are reviewed several aspects of gravitational lensing produced by astrophysical bodies that strongly curve the spacetime in their vicinity. When an object with a photon sphere (e.g. a black hole) is interposed between a source and an observer, in addition to primary and secondary images due to small deflections of the light rays, there are
openaire   +2 more sources

The Proper Motion of Strongly Lensed Binary Neutron Star Mergers in LIGO/Virgo/Kagra Can Be Constrained by Measuring Doppler-induced Gravitational-wave Dephasing

open access: yesThe Astrophysical Journal
Strongly lensed binary neutron star (NS–NS) mergers are expected to be observed once LIGO/Virgo/Kagra reaches the planned A+ or proposed A# sensitivity. We demonstrate that the relative transverse velocity of the source-lens system can be constrained by ...
Lorenz Zwick, Johan Samsing
doaj   +1 more source

Remote Sensing for Irrigation Water Management—The State of the Art and Prospects for Near‐Future Operations

open access: yesIrrigation and Drainage, EarlyView.
ABSTRACT A recent UN report describes many regions as facing ‘water bankruptcy,’ a condition in which available water resources can no longer meet existing demands. In practice, this means irrigation will likely bear the greatest burden of future water‐use reductions, a complicated and fraught decision to make given its critical role in food security ...
Wim G. M. Bastiaanssen   +30 more
wiley   +1 more source

COOL-LAMPS. VI. Lens Model and New Constraints on the Properties of COOL J1241+2219, a Bright z = 5 Lyman Break Galaxy and its z = 1 Cluster Lens

open access: yesThe Astrophysical Journal
We present a strong lensing analysis of COOL J1241+2219, the brightest known gravitationally lensed galaxy at z ≥ 5, based on new multiband Hubble Space Telescope (HST) imaging data. The lensed galaxy has a redshift of z = 5.043, placing it shortly after
Maxwell Klein   +22 more
doaj   +1 more source

Tailoring MXene Flake Morphology via Aerosol Jet Printing for Biological and Strain Sensor Applications

open access: yesSmall, EarlyView.
Aerosol Jet Printing (AJP), coupled with a novel in situ monitoring method, enabled the controlled fabrication of aligned and crumpled Ti3C2Tx MXenes for diverse applications. Demonstrated across multiple 2D materials, this scalable strategy stablishes flake morphology as a controllable design parameter for engineering application‐specific material ...
Javier Gutierrez‐Gonzalez   +18 more
wiley   +1 more source

The Shear TEsting Programme 1: Weak lensing analysis of simulated ground-based observations [PDF]

open access: yes
The Shear TEsting Programme, STEP, is a collaborative project to improve the accuracy and reliability of all weak lensing measurements in preparation for the next generation of wide-field surveys.
Wittman, D   +24 more
core  

Gravitational lensing by black holes: The case of Sgr A*

open access: yes, 2014
The strong gravitational fields created by black holes dramatically affect the propagation of photons by bending their trajectories. Gravitational lensing thus stands as the main source of information on the space-time structure in such extreme regimes ...
BOZZA, Valerio, V. Bozza
core   +1 more source

High-resolution ALMA Imaging for a Gravitationally Lensed Quasar at z = 6.5: Constraining the Active Galactic Nucleus Contribution to Galactic-scale Dust Heating

open access: yesThe Astrophysical Journal Letters
We present high-resolution (beam size $0\mathop{.}\limits{^{\prime\prime} }076\times 0\mathop{.}\limits{^{\prime\prime} }040$ ) Atacama Large Millimeter/submillimeter Array observations of the far-infrared ( λ _rest  = 162.7 μ m) dust continuum of J0439 ...
Minghao Yue   +8 more
doaj   +1 more source

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