scholarly journals COSMOS: Three‐dimensional Weak Lensing and the Growth of Structure

2007 ◽  
Vol 172 (1) ◽  
pp. 239-253 ◽  
Author(s):  
Richard Massey ◽  
Jason Rhodes ◽  
Alexie Leauthaud ◽  
Peter Capak ◽  
Richard Ellis ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Weak Lensing

scholarly journals Two- and three-dimensional wide-field weak lensing mass maps from the Hyper Suprime-Cam Subaru Strategic Program S16A data

2017 ◽  
Vol 70 (SP1) ◽  
Author(s):  
Masamune Oguri ◽  
Satoshi Miyazaki ◽  
Chiaki Hikage ◽  
Rachel Mandelbaum ◽  
Yousuke Utsumi ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Weak Lensing ◽  
Wide Field ◽  
Strategic Program

scholarly journals Evolution of the dark matter distribution with three-dimensional weak lensing

2005 ◽  
Vol 363 (3) ◽  
pp. 723-733 ◽  
Author(s):  
D. J. Bacon ◽  
A. N. Taylor ◽  
M. L. Brown ◽  
M. E. Gray ◽  
C. Wolf ◽  
...  
Keyword(s):  
Dark Matter ◽  
Three Dimensional ◽  
Weak Lensing ◽  
Matter Distribution ◽  
Dark Matter Distribution

scholarly journals A nulling strategy for modelling lensing convergence in cones with large deviation theory

2020 ◽  
Vol 492 (3) ◽  
pp. 3420-3439 ◽  
Author(s):  
A Barthelemy ◽  
S Codis ◽  
C Uhlemann ◽  
F Bernardeau ◽  
R Gavazzi
Keyword(s):  
Large Deviation ◽  
Three Dimensional ◽  
Analytical Approximation ◽  
Line Of Sight ◽  
Weak Lensing ◽  
Opening Angle ◽  
Practical Implementation ◽  
Spherical Cells ◽  
Non Gaussian ◽  
Tomographic Analysis

ABSTRACT The distribution of the cosmic convergence field is modelled using a large deviation principle where all non-Gaussian contributions are computed from first principles. The geometry of the past light-cone is accounted for by constructing the total weak-lensing signal from contributions of the matter density in thin disc slices. The prediction of this model is successfully tested against numerical simulation with ray-tracing, and found to be accurate within at least 5 per cent in the tails at redshift 1 and opening angle of 10 arcmin and even more so with increasing source redshift and opening angle. An accurate analytical approximation to the theory is also provided for practical implementation. The lensing kernel that mixes physical scales along the line of sight tends to reduce the domain of validity of this theoretical approach compared to the three-dimensional case of cosmic densities in spherical cells. This effect is shown to be avoidable if a nulling procedure is implemented in order to localize the lensing line-of-sight integrations in a tomographic analysis. Accuracy in the tails is thus achieved within a per cent for source redshifts between 0.5 and 1.5 and an opening angle of 10 arcmin. Applications to future weak-lensing surveys like Euclid and the specific issue of shape noise are discussed.

scholarly journals Subaru Hyper Suprime-Cam excavates colossal over- and under-dense structures over 360 deg2 out to z = 1

2021 ◽  
Author(s):  
Rhythm Shimakawa ◽  
Yuichi Higuchi ◽  
Masato Shirasaki ◽  
Masayuki Tanaka ◽  
Yen-Ting Lin ◽  
...  
Keyword(s):  
Dimensional Space ◽  
Grid Point ◽  
Three Dimensional ◽  
Weak Lensing ◽  
Density Peaks ◽  
Public Data ◽  
Data Release ◽  
Strategic Program ◽  
Point Data ◽  
Good Agreement

Abstract Subaru Strategic Program with the Hyper-Suprime Cam (HSC-SSP) has proven to be successful with its extremely-wide area coverage in past years. Taking advantages of this feature, we report initial results from exploration and research of expansive over- and under-dense structures at z = 0.3 – 1 based on the second Public Data Release where optical 5-band photometric data for ∼ eight million sources with i < 23 mag are available over ∼360 square degrees. We not only confirm known superclusters but also find candidates of titanic over- and under-dense regions out to z = 1. The mock data analysis suggests that the density peaks would involve one or more massive dark matter haloes (>1014 M⊙) of the redshift, and the density troughs tend to be empty of massive haloes over >10 comoving Mpc. Besides, the density peaks and troughs at z ≲ 0.6 are in part identified as positive and negative weak lensing signals respectively, in mean tangential shear profiles, showing a good agreement with those inferred from the full-sky weak lensing simulation. The coming extensive spectroscopic surveys will be able to resolve these colossal structures in three-dimensional space. The number density information over the entire survey field is available as grid-point data on the website of the HSC-SSP data release (https://hsc.mtk.nao.ac.jp/ssp/data-release/).

scholarly journals Three-dimensional Reconstruction of Weak-lensing Mass Maps with a Sparsity Prior. I. Cluster Detection

2021 ◽  
Vol 916 (2) ◽  
pp. 67
Author(s):  
Xiangchong Li ◽  
Naoki Yoshida ◽  
Masamune Oguri ◽  
Shiro Ikeda ◽  
Wentao Luo
Keyword(s):  
Three Dimensional ◽  
Cluster Detection ◽  
Weak Lensing ◽  
Three Dimensional Reconstruction ◽  
Dimensional Reconstruction

The orbit of Pluto over a long interval of time

1966 ◽  
Vol 25 ◽  
pp. 227-229 ◽  
Author(s):  
D. Brouwer
Keyword(s):  
Periodic Orbit ◽  
Numerical Integration ◽  
Restricted Problem ◽  
Three Dimensional ◽  
The Third ◽  
Circular Restricted Problem ◽  
Resonance Relation

The paper presents a summary of the results obtained by C. J. Cohen and E. C. Hubbard, who established by numerical integration that a resonance relation exists between the orbits of Neptune and Pluto. The problem may be explored further by approximating the motion of Pluto by that of a particle with negligible mass in the three-dimensional (circular) restricted problem. The mass of Pluto and the eccentricity of Neptune's orbit are ignored in this approximation. Significant features of the problem appear to be the presence of two critical arguments and the possibility that the orbit may be related to a periodic orbit of the third kind.

Conformation of Ribosomes from Escherichia Coli

1974 ◽  
Vol 32 ◽  
pp. 210-211
Author(s):  
M. Boublik ◽  
W. Hellmann ◽  
F. Jenkins
Keyword(s):  
Binding Sites ◽  
Ribosomal Proteins ◽  
Fluorescent Dyes ◽  
Protein Biosynthesis ◽  
Three Dimensional ◽  
Spatial Arrangement ◽  
Dimensional Structure ◽  
Complete Understanding ◽  
And Function

The present knowledge of the three-dimensional structure of ribosomes is far too limited to enable a complete understanding of the various roles which ribosomes play in protein biosynthesis. The spatial arrangement of proteins and ribonuclec acids in ribosomes can be analysed in many ways. Determination of binding sites for individual proteins on ribonuclec acid and locations of the mutual positions of proteins on the ribosome using labeling with fluorescent dyes, cross-linking reagents, neutron-diffraction or antibodies against ribosomal proteins seem to be most successful approaches. Structure and function of ribosomes can be correlated be depleting the complete ribosomes of some proteins to the functionally inactive core and by subsequent partial reconstitution in order to regain active ribosomal particles.

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