Add to ORKGWeak lensing is commonly measured using shear through galaxy ellipticities or using the effect of magnification bias on galaxy number densities. Here, we report on the first detection of weak-lensing magnification with a new, independent technique using the distribution of galaxy sizes and magnitudes. These data come for free in galaxy surveys designed for measuring shear. We present the magnification estimator and apply it to an X-ray-selected sample of galaxy groups in the COSMOS Hubble Space Telescope survey. The measurement of the projected surface density Σ(r) is consistent with the shear measurements within the uncertainties and has roughly 40% of the signal to noise of the latter. We discuss systematic issues and challenges to realiz...
Galaxy-galaxy lensing has emerged as a powerful probe of the dark matter haloes of galaxies, but is ...
We present first results from the third GRavitational lEnsing Accuracy Testing (GREAT3) challenge, t...
The first half of this paper explores the origin of systematic biases in the measurement of weak gra...
Weak lensing is commonly measured using shear through galaxy ellipticities or using the effect of ma...
Weak lensing is commonly measured using shear through galaxy ellipticities or using the effect of ma...
Context. Weak lensing is one of the most readily available diagnostic tools to measure the total den...
We measure the weak lensing shear around galaxy troughs, i.e. the radial alignment of background gal...
Clusters of galaxies offer a unique window for studying the Universe on the largest scales. As the m...
With a primary goal of conducting precision weak-lensing measurements from space, the COSMOS survey ...
In this paper, the effect of weak lensing magnification on galaxy number counts is studied by cross-...
The high sensitivity of the new generation of radio telescopes such as the Square Kilometre Array (S...
Gravitational lensing can provide pure geometric tests of the structure of spacetime, for instance b...
Ignoring redshift dependence, the statistical performance of a weak lensing survey is set by two num...
Recent works have shown that weak lensing magnification must be included in upcoming large-scale str...
Current constraints on dark matter density profiles from weak lensing are typically limited to radia...
Galaxy-galaxy lensing has emerged as a powerful probe of the dark matter haloes of galaxies, but is ...
We present first results from the third GRavitational lEnsing Accuracy Testing (GREAT3) challenge, t...
The first half of this paper explores the origin of systematic biases in the measurement of weak gra...
Weak lensing is commonly measured using shear through galaxy ellipticities or using the effect of ma...
Weak lensing is commonly measured using shear through galaxy ellipticities or using the effect of ma...
Context. Weak lensing is one of the most readily available diagnostic tools to measure the total den...
We measure the weak lensing shear around galaxy troughs, i.e. the radial alignment of background gal...
Clusters of galaxies offer a unique window for studying the Universe on the largest scales. As the m...
With a primary goal of conducting precision weak-lensing measurements from space, the COSMOS survey ...
In this paper, the effect of weak lensing magnification on galaxy number counts is studied by cross-...
The high sensitivity of the new generation of radio telescopes such as the Square Kilometre Array (S...
Gravitational lensing can provide pure geometric tests of the structure of spacetime, for instance b...
Ignoring redshift dependence, the statistical performance of a weak lensing survey is set by two num...
Recent works have shown that weak lensing magnification must be included in upcoming large-scale str...
Current constraints on dark matter density profiles from weak lensing are typically limited to radia...
Galaxy-galaxy lensing has emerged as a powerful probe of the dark matter haloes of galaxies, but is ...
We present first results from the third GRavitational lEnsing Accuracy Testing (GREAT3) challenge, t...
The first half of this paper explores the origin of systematic biases in the measurement of weak gra...