Results 131 to 140 of about 1,077 (214)

CANUCS: An Updated Mass and Magnification Model of A370 with JWST

The Astrophysical Journal
We present an updated mass and magnification model of galaxy cluster A370 using new NIRCam, NIRISS, and NIRSpec data from the Canadian NIRISS Unbiased Cluster Survey (CANUCS).
Rachel Gledhill, Victoria Strait, Guillaume Desprez, Gregor Rihtaršič, Maruša Bradač, Gabriel Brammer, Chris J. Willott, Nicholas Martis, Marcin Sawicki, Gaël Noirot, Ghassan T. E. Sarrouh, Adam Muzzin   +11 more
doaj   +1 more source

How accurately can we measure weak gravitational shear?

, 2001
With the recent detection of cosmic shear, the most challenging effect of weak gravitational lensing has been observed. The main difficulties for this detection were the need for a large amount of high quality data and the control of systematics during ...
Bertin, E., Y. Mellier, Mellier, Y., E. Bertin, T. Erben, Erben, T., Schneider, P., L. Van Waerbeke, P. Schneider, van Waerbeke, L.   +9 more
core   +1 more source

Accurate Measurement of the Lensing Magnification by BOSS CMASS Galaxies and Its Implications for Cosmology and Dark Matter

The Astrophysical Journal
Magnification serves as an independent and complementary gravitational lensing measurement to shear. We develop a novel method to achieve an accurate and robust magnification measurement around BOSS CMASS galaxies across physical scales of 0.016 h ^−1 ...
Kun Xu, Y. P. Jing, Hongyu Gao, Xiaolin Luo, Ming Li   +4 more
doaj   +1 more source

Supermassive Dark Star candidates seen by JWST. [PDF]

Proc Natl Acad Sci U S A, 2023
Ilie C, Paulin J, Freese K.
europepmc   +1 more source

Detection of early-universe gravitational-wave signatures and fundamental physics. [PDF]

Gen Relativ Gravit, 2022
Caldwell R, Cui Y, Guo HK, Mandic V, Mariotti A, No JM, Ramsey-Musolf MJ, Sakellariadou M, Sinha K, Wang LT, White G, Zhao Y, An H, Bian L, Caprini C, Clesse S, Cline JM, Cusin G, Fornal B, Jinno R, Laurent B, Levi N, Lyu KF, Martinez M, Miller AL, Redigolo D, Scarlata C, Sevrin A, Haghi BSE, Shu J, Siemens X, Steer DA, Sundrum R, Tamarit C, Weir DJ, Xie KP, Yang FW, Zhou S.   +37 more
europepmc   +1 more source

Weak Gravitational Lensing Shear and Magnification Analysis of Hydrodynamic Simulations and Application to Weak Lensing Data

, 2019
In the main part of this dissertation we study the impact of baryonic processes and massive neutrinos on weak lensing peak statistics that can be used to constrain cosmological parame­ters.
Choi, Miyoung
core  

Gravitational Lensing and Telescope Aberrations

, 2014
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2014.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.Cataloged from student ...
Levinson, Rebecca S
core  

Cosmological Constraints from Combining Photometric Galaxy Surveys and Gravitational Wave Observatories

The Open Journal of Astrophysics
Spatial variations in survey properties due to selection effects generate substantial systematic errors in large-scale structure measurements in optical galaxy surveys on very large scales.
E.L. Gagnon, D. Anbajagane, J. Prat, C. Chang, J. Frieman   +4 more
doaj   +1 more source

Poisson equation for weak gravitational lensing

, 2008
Using the Newman and Penrose [ E. T. Newman and R. Penrose J. Math. Phys. (N.Y.) 3 566 (1962)] spin-coefficient formalism, we examine the full Bianchi identities of general relativity in the context of gravitational lensing, where the matter and space ...
Kling, Thomas P., Campbell, B.
core  

Polarized thermal emission from dust in a galaxy at redshift 2.6. [PDF]

Nature, 2023
Geach JE, Lopez-Rodriguez E, Doherty MJ, Chen J, Ivison RJ, Bendo GJ, Dye S, Coppin KEK.   +7 more
europepmc   +1 more source