Results 61 to 70 of about 1,077 (214)

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

Edges In Coadded Images

The Open Journal of Astrophysics
We investigate how discontinuities in the point spread function (PSF) and image noise affect weak gravitational lensing shear measurements. Our focus is on discontinuities that arise in coadded images, particularly when edges from input images cross the ...
Erin Sheldon
doaj   +1 more source

Accurate cosmological emulator for the probability distribution function of gravitational lensing of point sources

Astronomy & Astrophysics
Aims. We developed an accurate and computationally efficient emulator to model the gravitational lensing magnification probability distribution function (PDF), enabling robust cosmological inference of point sources such as supernovae and gravitational ...
Turker Tunç, Marra Valerio, Castro Tiago, Quartin Miguel, Borgani Stefano   +4 more
doaj   +1 more source

Turning Electrode Orientation into a Design Parameter: Gravity‐Driven Convection for Coupling Electrochemical and Enzymatic Reactions

ChemElectroChem, Volume 13, Issue 11, 3 June 2026.
Electrochemically induced density gradients are harnessed to drive gravity‐dependent convection at partially fouled electrodes. By controlling electrode orientation and surface heterogeneity, mass transport is enhanced without external stirring. This enables coupling of electrochemical reactions with enzyme catalysis on insulating domains, exemplified ...
Wathsala Prasadini Kapuralage, Jesse Fletcher, K. Swaminathan Iyer, Simone Ciampi   +3 more
wiley   +1 more source

Weak gravitational lensing of finite beams

, 2017
International audienceThe standard theory of weak gravitational lensing relies on the infinitesimal light beam approximation. In this context, images are distorted by convergence and shear, the respective sources of which unphysically depend on the ...
Fleury, Pierre, Larena, Julien, Jean-Philippe Uzan, Uzan, Jean-Philippe, Julien Larena, Pierre Fleury   +5 more
core   +1 more source

Validation of the DESI-DR1 3x2-pt analysis: scale cut and shear ratio tests

The Open Journal of Astrophysics
Combined survey analyses of galaxy clustering and weak gravitational lensing (3x2-pt studies) will allow new and accurate tests of the standard cosmological model. However, careful validation is necessary to ensure that these cosmological constraints are
Ni Putu Audita Placida Emas, A. Porredon, C. Blake, J. DeRose, J. Aguilar, S. Ahlen, D. Bianchi, D. Brooks, F. J. Castander, T. Claybaugh, A. Cuceu, A. de la Macorra, A. Dey, B. Dey, P. Doel, S. Ferraro, J. E. Forero-Romero, C. Garcia-Quintero, E. Gaztañaga, S. Gontcho A Gontcho, G. Gutierrez, S. Heydenreich, K. Honscheid, D. Huterer, M. Ishak, S. Joudaki, R. Joyce, E. Jullo, S. Juneau, R. Kehoe, D. Kirkby, T. Kisner, A. Kremin, A. Krolewski, O. Lahav, M. Landriau, J. U. Lange, L. Le Guillou, A. Leauthaud, M. Manera, R. Miquel, S. Nadathur, W. J. Percival, F. Prada, G. Rossi, R. Ruggeri, E. Sanchez, C. Saulder, A. Semenaite, H. Seo, J. Silber, D. Sprayberry, Z. Sun, G. Tarlé, B. A. Weaver, R. H. Wechsler, R. Zhou   +56 more
doaj   +1 more source

Euclid: Early Release Observations – Weak gravitational lensing analysis of Abell 2390 ★

Astronomy & Astrophysics
The Euclid space telescope of the European Space Agency (ESA) is designed to provide sensitive and accurate measurements of weak gravitational lensing distortions over wide areas on the sky. Here, we present a weak gravitational lensing analysis of early
Schrabback T., Congedo G., Gavazzi R., Hartley W. G., Jansen H., Kang Y., Kleinebreil F., Atek H., Bertin E., Cuillandre J.-C., Diego J. M., Grandis S., Hoekstra H., Kümmel M., Linke L., Miyatake H., Okabe N., Paltani S., Schefer M., Simon P., Tarsitano F., Taylor A. N., Weaver J. R., Bhatawdekar R., Montes M., Rosati P., Toft S., Altieri B., Amara A., Amendola L., Andreon S., Auricchio N., Baccigalupi C., Baldi M., Balestra A., Bardelli S., Battaglia P., Bender R., Biviano A., Branchini E., Brescia M., Brinchmann J., Camera S., Cañas-Herrera G., Candini G. P., Capobianco V., Carbone C., Cardone V. F., Carretero J., Casas S., Castander F. J., Castellano M., Castignani G., Cavuoti S., Chambers K. C., Cimatti A., Colodro-Conde C., Conselice C. J., Conversi L., Copin Y., Costille A., Courbin F., Courtois H. M., Cropper M., Da Silva A., Degaudenzi H., De Lucia G., Dole H., Douspis M., Dubath F., Dupac X., Dusini S., Escoffier S., Farina M., Farinelli R., Farrens S., Faustini F., Ferriol S., Finelli F., Fosalba P., Frailis M., Franceschi E., Fumana M., Galeotta S., George K., Gillard W., Gillis B., Giocoli C., Gracia-Carpio J., Grazian A., Grupp F., Haugan S. V. H., Hoar J., Holmes W., Hook I. M., Hormuth F., Hornstrup A., Hudelot P., Jahnke K., Jhabvala M., Joachimi B., Keihänen E., Kermiche S., Kilbinger M., Kubik B., Kuijken K., Kunz M., Kurki-Suonio H., Laureijs R., Le Brun A. M. C., Le Mignant D., Ligori S., Lilje P. B., Lindholm V., Lloro I., Mainetti G., Maino D., Maiorano E., Mansutti O., Marcin S., Marggraf O., Martinelli M., Martinet N., Marulli F., Massey R. J., Maurogordato S., Medinaceli E., Mei S., Mellier Y., Meneghetti M., Merlin E., Meylan G., Mohr J. J., Mora A., Moresco M., Moscardini L., Nakajima R., Neissner C., Nichol R. C., Niemi S.-M., Padilla C., Pasian F., Pedersen K., Percival W. J., Pettorino V., Pires S., Polenta G., Poncet M., Popa L. A., Pozzetti L., Raison F., Renzi A., Rhodes J., Riccio G., Romelli E., Roncarelli M., Rosset C., Saglia R., Sakr Z., Sapone D., Sartoris B., Schirmer M., Schneider P., Secroun A., Seidel G., Seiffert M., Serrano S., Sirignano C., Sirri G., Spurio Mancini A., Stanco L., Steinwagner J., Tallada-Crespí P., Tereno I., Tessore N., Toledo-Moreo R., Torradeflot F., Tutusaus I., Valentijn E. A., Valenziano L., Valiviita J., Vassallo T., Verdoes Kleijn G., Veropalumbo A., Wang Y., Weller J., Zamorani G., Zerbi F. M., Zucca E., Bolzonella M., Burigana C., Gabarra L., Martín-Fleitas J., Matthew S., Pezzotta A., Scottez V., Sereno M., Viel M., Scott D.   +198 more
doaj   +1 more source

DeepLSS: Breaking Parameter Degeneracies in Large-Scale Structure with Deep-Learning Analysis of Combined Probes

Physical Review X, 2022
In classical cosmological analysis of large-scale structure surveys with two-point functions, the parameter measurement precision is limited by several key degeneracies within the cosmology and astrophysics sectors. For cosmic shear, clustering amplitude
Tomasz Kacprzak, Janis Fluri
doaj   +1 more source

3D Printing Innovations in Polymeric Porous and Patterned Architecture

Advanced Functional Materials, Volume 36, Issue 50, 22 June 2026.
Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil, Sri Vaishnavi Thummalapalli, Clarissa Westover, Arunachalam Ramanathan, M. Taylor Sobzcak, Roumika Patil, Qixuan Xiang, Tiantian Li, Sui Yang, Timothy E. Long, Hongyue Sun, Xianqiao Wang, Yang Liu, Kenan Song   +13 more
wiley   +1 more source

Cosmology with the line-of-sight shear of strong gravitational lenses

Stage-IV photometric galaxy surveys are designed to measure the position and shapes of billions of galaxies. Their aim is to characterise the large-scale distribution of matter in the Universe using galaxy clustering and weak gravitational lensing. As a byproduct, stage-IV surveys are expected to detect more than a hundred thousand strong gravitational
Fleury, Pierre, Johnson, Daniel, Duboscq, Théo, Hogg, Natalie B., Larena, Julien   +4 more
openaire   +2 more sources