Results 51 to 60 of about 206 (178)

THE SYSTEMATIC ERROR TEST FOR PSF CORRECTION IN WEAK GRAVITATIONAL LENSING SHEAR MEASUREMENT BY THE ERA METHOD BY IDEALIZING PSF [PDF]

The Astrophysical Journal, 2016
ABSTRACT We improve the ellipticity of re-smeared artificial image (ERA) method of point-spread function (PSF) correction in a weak lensing shear analysis in order to treat the realistic shape of galaxies and the PSF. This is done by re-smearing the PSF and the observed galaxy image using a re-smearing function (RSF) and allows us to use
Okura, Yuki, Futamase, Toshifumi
openaire   +2 more sources

Gravity‐Driven Assembly Dynamics of Liquid Metal Microdroplets for Functional Composite Films

Small, EarlyView.
This article presents a new understanding of the gravitational settling of liquid metal microdroplets in polymer resin films. It employs an experimental and analysis platform for quantification of the process‐structure relationships to inform the dynamics of gravity‐driven assembly in soft circuit architectures. ABSTRACT Liquid metal (LM) microdroplets
Brittan T. Wilcox, Ryan C. Rothermel, Michael D. Bartlett   +2 more
wiley   +1 more source

Improving Precision in Kinematic Weak Lensing with MIRoRS: Model-independent Restoration of Reflection Symmetries

The Astrophysical Journal
We present a novel, model-independent technique for fitting the cross-component of weak lensing shear, γ _× , along a line of sight by combining kinematic and photometric measurements of a single lensed galaxy.
Christopher Hopp, David Wittman
doaj   +1 more source

When Thriving for More Collapses the System: The Academic Reproduction of Uncaring Structures

British Journal of Management, EarlyView.
Abstract This essay argues that the widening gap between aspirational aims and visionary orientations and the prevailing practices in neoliberal academia stems from deeper, historically rooted, market‐based logics shaping our institutions, increasingly governed by economic values and academic subjectivities therein.
Lara Pecis, Florian Bauer
wiley   +1 more source

Preliminary Evidence for Lensing-induced Alignments of High-redshift Galaxies in JWST-CEERS

The Astrophysical Journal
The majority of low-mass ( ${\mathrm{log}}_{10}{M}_{* }/{M}_{\odot }=9\mbox{--}10$ ) galaxies at high redshift ( z  > 1) appear elongated in projection. We use JWST-CEERS observations to explore the role of gravitational lensing in this puzzle.
Viraj Pandya, Abraham Loeb, Elizabeth J. McGrath, Guillermo Barro, Steven L. Finkelstein, Henry C. Ferguson, Norman A. Grogin, Jeyhan S. Kartaltepe, Anton M. Koekemoer, Casey Papovich, Nor Pirzkal, L. Y. Aaron Yung   +11 more
doaj   +1 more source

Lodge moraines: a common yet underreported end‐moraine type—a review

Boreas, EarlyView.
Lodge moraines are a distinct genetic type of end moraine formed by submarginal accretion of subglacial till; they are some of the largest end moraines in the world. Although underreported in the literature, they are of equal importance to push, dump and hummocky end moraines. End moraines are formed at glacier ice margins and show the extent of former
Mark D. Johnson, Jose Luis Antinao, Ívar Örn Benediktsson, David A. Grimley, Carrie E. Jennings, Henry M. Loope, Tom V. Lowell, David M. Mickelson, Peter L. Moore, Thomas A. Nash, J. Elmo Rawling III, Jamey Stutz   +11 more
wiley   +1 more source

Ellipticities of Galaxy Cluster Halos from Halo–Shear–Shear Correlations

The Astrophysical Journal
We report the first detection of the halo ellipticities of galaxy clusters by applying the halo–shear–shear correlations (HSSCs), without the necessity of using major axis determination.
Zhenjie Liu, Jun Zhang, Cong Liu, Hekun Li   +3 more
doaj   +1 more source

Alluvial ridge morphology on avulsing rivers

Sedimentology, EarlyView.
ABSTRACT Alluvial ridges are built by preferential channel‐belt deposition and control river avulsions, yet a systematic analysis of their morphology has been missing. To address this gap, we analyse a globally distributed dataset of 8970 alluvial ridge flanks on 14 different rivers.
James H. Gearon, Douglas A. Edmonds
wiley   +1 more source

The stellar and dark matter distributions in early-type galaxies measured by stacked weak gravitational lensing

The Open Journal of Astrophysics
We investigate stellar mass and central dark matter density profiles of photometric luminous red galaxies with stellar masses of $\sim10^{10}-10^{12}M_\odot$ using weak gravitational lensing measurements from the Hyper Suprime-Cam Subaru Strategic ...
Momoka Fujikawa, Masamune Oguri
doaj   +1 more source

The ERA Method with Idealizing PSF for Precise Weak Gravitational Lensing Shear Analysis

, 2015
We generalize ERA method of PSF correction for more realistic situations. The method re-smears the observed galaxy image(galaxy image smeared by PSF) and PSF image by an appropriate function called Re-Smearing Function(RSF) to make new images which have the same ellipticity with the lensed (before smeared by PSF) galaxy image.
Okura, Yuki, Futamase, Toshifumi
openaire   +2 more sources