Skip to main content

Home/ Gravitational Lensing/ Group items tagged paper

Rss Feed Group items tagged

Douglas Clowe

The Shear Testing Programme - I. Weak lensing analysis of simulated ground-based observ... - 0 views

  •  
    Results from a large blind analysis study of shear measurements of galaxies. This paper contains good summaries of various methods to correct shear measurements for PSF smearing. (A)
Douglas Clowe

Catastrophic photometric redshift errors: weak-lensing survey requirements: G. Bernstei... - 0 views

  •  
    This paper discusses the impact on cosmological-parameter measurement from cosmic-shear surveys owing to catastrophic errors in photometric redshifts measurements. (A)
Douglas Clowe

Systematic effects on dark energy from 3D weak shear: T. D. Kitching, A. N. Taylor, A. ... - 0 views

  •  
    This paper discusses the impact on cosmological-parameter measurement from cosmic-shear surveys owing to a variety of systematic errors. Of particular importance are the intrinsic alignments of galaxy shapes (prior to their being lensed) and the accuracy with which the lensed-galaxies redshifts can be estimated from their colors alone. (A)
Douglas Clowe

Weak Gravitational Lensing by Galaxies: T. G. Brainerd, R. D. Blandford, and I. Smail, ... - 0 views

  •  
    This paper introduced the concept of galaxy-galaxy lensing, and provides scaling relations for predicting the number of background galaxies that will be needed to measure the mean mass profile around a given type of galaxy to a given accuracy. (A)
Douglas Clowe

Shear and magnification: cosmic complementarity: L. van Waerbeke, Mon. Not. R. Astron. ... - 0 views

  •  
    This paper described the methodology behind using weak lensing magnification of high-redshift galaxies as a probe of comological parameters. (A)
Douglas Clowe

CARS: The CFHTLS-Archive-Research Survey. III. First detection of cosmic magnification ... - 0 views

  •  
    This paper studies how the distribution of faint, background galaxies is affected by the presence of bright, foreground galaxies, and models this as a product of weak lensing magnification. (A)
Douglas Clowe

Detection of Cosmic Magnification with the Sloan Digital Sky Survey: R. Scranton, et al... - 0 views

  •  
    This paper studies the change in number density of quasars with distance from bright galaxies and models the results as a gravitational lensing signal from the bright galaxies. It includes a discussion of the potential systematic errors in the measurements and why previous attempts at making this measurement were limited by the systematic errors. (A)
Tommaso Treu

Massive Dark Matter Halos and Evolution of Early-Type Galaxies to z ~ 1. T. Treu and L.... - 0 views

  •  
    A clear illustration of the power of combining gravitational lensing with other diagnostics (in this case stellar kinematics) for the study of stars and dark matter in galaxies and their evolution over cosmic time. (A)
Tommaso Treu

Detection of a dark substructure through gravitational imaging, S. Vegetti, L.V.E. Koop... - 0 views

  •  
    Describes a dark galactic satellite detected at cosmological distances, purely based on the strong gravitational lensing effect. (A)
Tommaso Treu

The SWELLS survey - I. A large spectroscopically selected sample of edge-on latelatetyp... - 0 views

  •  
    A recent description of the rationale for studying spiral galaxies with strong gravitational lensing and the challenges associated with finding large samples of them. (A)
Tommaso Treu

Effects of dark matter substructures on gravitational lensing: results from the Aquariu... - 0 views

  •  
    A recent treatment of the substructure problem from a theoretical point of view. The authors compare predictions from numerical simulations with observations of strong lens flux-ratio anomalies and find that strong lenses may even indicate an excess of massive satellites. (A)
Tommaso Treu

The Dark Matter Distribution in A383: Evidence for a Shallow Density Cusp from Improved... - 0 views

  •  
    A good example of astronomers attempting to combine information from several sources to constrain a self-consistent model of a cluster gravitational potential. (A)
Tommaso Treu

The Survival of Dark Matter Halos in the Cluster Cl 0024+16, P. Natarajan, J.-P. Kneib,... - 0 views

  •  
    This study of dark matter substructure in a cluster of galaxies, using both strong and weak lensing, covered an unprecedently wide dynamic range of cluster mass density and infalling group environments, and provided comparison with simulations regarding the cluster dark matter density profile. (A)
Tommaso Treu

The formation and assembly of a typical star-forming galaxy at redshift z~3, D.P. Stark... - 0 views

  •  
    A very nice recent illustration of the power of gravitational lensing to magnify the distant universe. (A)
Tommaso Treu

Quantitative Interpretation of Quasar Microlensing Light Curves. C.S. Kochanek, Astroph... - 0 views

  •  
    Introduced a new method to analyze and interpret quasar microlensing light curves. In the process it gave a good description of the physical picture. (A)
Tommaso Treu

X-Ray and Optical Flux Ratio Anomalies in Quadruply Lensed Quasars. II. Mapping the Dar... - 0 views

  •  
    Used microlensing to learn about the granularity of the mass distribution in galaxies and therefore infer an absolute measurement of the dark matter and stellar content. This is a beautiful example of single-epoch microlensing applications. (A)
Tommaso Treu

Discovery of a cool planet of 5.5 Earth masses through gravitational microlensing, J.-P... - 0 views

  •  
    The fascinating discovery of an Earth-like planet using gravitational microlensing. (A)
Tommaso Treu

The Cosmic Lens All-Sky Survey - II. Gravitational lens candidate selection and follow-... - 0 views

  •  
    The CLASS survey involved a hierarchical tree of ever-higher resolution radio imaging of flat spectrum radio sources with unusual morphologies. By focusing on the sources, not the lenses, the team was able to select the first well-defined, statistically complete sample of lensed objects. (A)
Tommaso Treu

A New Survey for Giant Arcs, J. F. Hennawi, et al., Astronom J. 135, 664-681 (2008) - 0 views

  •  
    Gravitational lensing on the cluster scale is readily observed in almost all of the most massive systems, provided the image resolution and depth are high enough. "Blind" imaging surveys have also been carried out, most notably using SDSS data. Describes the candidate selection and confirmation of 16 new cluster-scale lenses. (A)
Tommaso Treu

The Sloan Digital Sky Survey Quasar Lens Search. I. Candidate Selection Algorithm, M. O... - 0 views

  •  
    The SQLS project was similar to the CLASS survey in that a combination of spectra and imaging was used to make a statistical lens sample, but the data was all taken in the optical and near infrared. (A)
« First ‹ Previous 41 - 60 of 67 Next ›
Showing 20 items per page