相关论文: ShapePipe: a new shape measurement pipeline and we…

Euclid preparation. Refining input galaxy shape distributions for shear calibration simulations

The Euclid Wide Survey (EWS) will cover the majority of the extragalactic sky with a resolution similar to the Hubble Space Telescope. This unprecedented data set will introduce a new era of precision cosmology. However, systematic effects…

宇宙学与河外天体物理 · 物理学 2026-04-30 Euclid Collaboration , H. Jansen , N. Martinet , S. Grandis , H. Hoekstra , S. -S. Li , T. Schrabback , G. Congedo , B. Csizi , F. Kleinebreil , G. Mankar , N. Zimmermann , B. Altieri , S. Andreon , N. Auricchio , C. Baccigalupi , M. Baldi , S. Bardelli , P. Battaglia , A. Biviano , E. Branchini , M. Brescia , S. Camera , V. Capobianco , C. Carbone , V. F. Cardone , J. Carretero , S. Casas , F. J. Castander , M. Castellano , G. Castignani , S. Cavuoti , A. Cimatti , C. Colodro-Conde , L. Conversi , Y. Copin , F. Courbin , H. M. Courtois , M. Cropper , H. Degaudenzi , G. De Lucia , H. Dole , F. Dubath , X. Dupac , S. Escoffier , M. Farina , R. Farinelli , S. Farrens , S. Ferriol , P. Fosalba , S. Fotopoulou , N. Fourmanoit , M. Frailis , E. Franceschi , M. Fumana , S. Galeotta , K. George , B. Gillis , C. Giocoli , J. Gracia-Carpio , A. Grazian , F. Grupp , S. V. H. Haugan , W. Holmes , I. M. Hook , F. Hormuth , A. Hornstrup , K. Jahnke , M. Jhabvala , B. Joachimi , S. Kermiche , A. Kiessling , B. Kubik , K. Kuijken , M. Kümmel , M. Kunz , H. Kurki-Suonio , A. M. C. Le Brun , S. Ligori , P. B. Lilje , V. Lindholm , I. Lloro , G. Mainetti , O. Mansutti , O. Marggraf , M. Martinelli , F. Marulli , R. J. Massey , E. Medinaceli , M. Meneghetti , E. Merlin , G. Meylan , A. Mora , M. Moresco , B. Morin , L. Moscardini , R. Nakajima , C. Neissner , S. -M. Niemi , J. W. Nightingale , C. Padilla , S. Paltani , F. Pasian , K. Pedersen , W. J. Percival , V. Pettorino , S. Pires , G. Polenta , L. A. Popa , F. Raison , A. Renzi , J. Rhodes , G. Riccio , M. Roncarelli , R. Saglia , Z. Sakr , D. Sapone , P. Schneider , A. Secroun , E. Sihvola , P. Simon , C. Sirignano , G. Sirri , L. Stanco , P. Tallada-Crespí , A. N. Taylor , I. Tereno , N. Tessore , S. Toft , R. Toledo-Moreo , F. Torradeflot , I. Tutusaus , J. Valiviita , T. Vassallo , G. Verdoes Kleijn , Y. Wang , J. Weller , G. Zamorani , F. M. Zerbi , E. Zucca , M. Ballardini , A. Boucaud , E. Bozzo , C. Burigana , R. Cabanac , M. Calabrese , A. Cappi , T. Castro , J. A. Escartin Vigo , J. García-Bellido , S. Hemmati , E. Jullo , J. Macias-Perez , R. Maoli , J. Martín-Fleitas , N. Mauri , R. B. Metcalf , P. Monaco , A. Pezzotta , M. Pöntinen , I. Risso , V. Scottez , M. Sereno , M. Tenti , M. Tucci , M. Viel , M. Wiesmann , Y. Akrami , I. T. Andika , G. Angora , S. Anselmi , M. Archidiacono , F. Atrio-Barandela , L. Baumont , L. Bazzanini , D. Bertacca , M. Bethermin , F. Beutler , A. Blanchard , L. Blot , M. Bonici , S. Borgani , M. L. Brown , S. Bruton , A. Calabro , B. Camacho Quevedo , F. Caro , C. S. Carvalho , F. Cogato , A. R. Cooray , O. Cucciati , J. E. Davies , T. de Boer , G. Desprez , A. Díaz-Sánchez , S. Di Domizio , J. M. Diego , V. Duret , M. Y. Elkhashab , Y. Fang , A. Finoguenov , A. Franco , K. Ganga , R. Gavazzi , E. Gaztanaga , F. Giacomini , F. Gianotti , G. Gozaliasl , A. Gruppuso , M. Guidi , C. M. Gutierrez , A. Hall , C. Hernández-Monteagudo , H. Hildebrandt , J. J. E. Kajava , Y. Kang , V. Kansal , D. Karagiannis , K. Kiiveri , J. Kim , C. C. Kirkpatrick , K. Koyama , S. Kruk , M. C. Lam , M. Lattanzi , L. Legrand , M. Lembo , F. Lepori , G. Leroy , G. F. Lesci , J. Lesgourgues , T. I. Liaudat , S. J. Liu , M. Magliocchetti , F. Mannucci , C. J. A. P. Martins , L. Maurin , M. Miluzio , C. Moretti , G. Morgante , S. Nadathur , K. Naidoo , A. Navarro-Alsina , S. Nesseris , F. Pace , D. Paoletti , F. Passalacqua , K. Paterson , L. Patrizii , C. Pattison , A. Pisani , D. Potter , G. W. Pratt , S. Quai , M. Radovich , K. Rojas , W. Roster , S. Sacquegna , M. Sahlén , D. B. Sanders , E. Sarpa , A. Schneider , D. Sciotti , D. Scognamiglio , E. Sellentin , L. C. Smith , E. Soubrie , I. Szapudi , K. Tanidis , F. Tarsitano , G. Testera , M. Tewes , R. Teyssier , S. Tosi , A. Troja , C. Uhlemann , C. Valieri , A. Venhola , D. Vergani , G. Verza , E. Vilenius , S. Vinciguerra , M. von Wietersheim-Kramsta , N. A. Walton , A. H. Wright

Combined analysis of weak lensing and X-ray blind surveys

We present a joint weak lensing and X-ray analysis of 4 deg$^2$ from the CFHTLS and XMM-LSS surveys. Our weak lensing analysis is the first analysis of a real survey using shapelets, a new generation weak lensing analysis method. We create…

天体物理学 · 物理学 2015-12-15 Joel Bergé , Florian Pacaud , Alexandre Réfrégier , Richard Massey , Marguerite Pierre , Adam Amara , Mark Birkinshaw , Stéphane Paulin-Henriksson , Graham P. Smith , Jon Willis

Weak Lensing Measurements of 42 SDSS/RASS Galaxy Clusters

We present a lensing study of 42 galaxy clusters imaged in Sloan Digital Sky Survey (SDSS) commissioning data. Cluster candidates are selected optically from SDSS imaging data and confirmed for this study by matching to X-ray sources found…

天体物理学 · 物理学 2009-11-06 Erin Scott Sheldon , James Annis , Hans Bohringer , Philippe Fischer , Joshua A. Frieman , Michael Joffre , David Johnston , Timothy A. McKay , Christopher Miller , Robert C. Nichol , Albert Stebbins , Wolfgang Voges , Scott F. Anderson , Neta A. Bahcall , J. Brinkmann , Robert Brunner , Istvan Csabai , Masataka Fukugita , G. S. Hennessy , Zeljko Ivezic , Robert H. Lupton , Jeffrey A. Munn , Jeffrey R. Pier , Donald G. York

Weak lensing from space: first cosmological constraints from three-point shear statistics

We use weak lensing data from the Hubble Space Telescope COSMOS survey to measure the second- and third-moments of the cosmic shear field, estimated from about 450,000 galaxies with average redshift <z> ~ 1.3. We measure two- and…

宇宙学与河外天体物理 · 物理学 2015-05-19 Elisabetta Semboloni , Tim Schrabback , Ludovic van Waerbeke , Sanaz Vafaei , Jan Hartlap , Stefan Hilbert

Cosmology with shear ratios: a joint study of weak lensing and spectroscopic redshift datasets

The ratio of the average tangential shear signal of different weak lensing source populations around the same lens galaxies, also known as a shear ratio, provides an important test of lensing systematics and a potential source of…

宇宙学与河外天体物理 · 物理学 2024-11-01 Ni Emas , Chris Blake , Rossana Ruggeri , Anna Porredon

Radio Weak Lensing Shear Measurement in the Visibility Domain - I. Methodology

The high sensitivity of the new generation of radio telescopes such as the Square Kilometre Array (SKA) will allow cosmological weak lensing measurements at radio wavelengths that are competitive with optical surveys. We present an…

天体物理仪器与方法 · 物理学 2016-09-23 Marzia Rivi , Lance Miller , Sphesihle Makhathini , Filipe Batoni Abdalla

Discovery of Strongly Lensed Quasars in the Ultraviolet Near Infrared Optical Northern Survey (UNIONS)

We report the discovery of five new doubly-imaged lensed quasars from the first 2500 square degrees of the ongoing Canada-France Imaging Survey (CFIS), which is a component of the Ultraviolet Near Infrared Optical Northern Survey (UNIONS),…

星系天体物理 · 物理学 2022-03-23 J. H. H. Chan , C. Lemon , F. Courbin , R. Gavazzi , B. Clément , M. Millon , E. Paic , K. Rojas , E. Savary , G. Vernardos , J. -C. Cuillandre , S. Fabbro , S. Gwyn , M. J. Hudson , M. Kilbinger , A. McConnachie

CFHTLenS: Weak lensing constraints on the ellipticity of galaxy-scale matter haloes and the galaxy-halo misalignment

We present weak lensing constraints on the ellipticity of galaxy-scale matter haloes and the galaxy-halo misalignment. Using data from the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS), we measure the weighted-average ratio of…

星系天体物理 · 物理学 2016-07-07 Tim Schrabback , Stefan Hilbert , Henk Hoekstra , Patrick Simon , Edo van Uitert , Thomas Erben , Catherine Heymans , Hendrik Hildebrandt , Thomas D. Kitching , Yannick Mellier , Lance Miller , Ludovic Van Waerbeke , Philip Bett , Jean Coupon , Liping Fu , Michael J. Hudson , Benjamin Joachimi , Martin Kilbinger , Konrad Kuijken

Verifying the Australian MWA EoR pipeline I: 21-cm sky model and correlated measurement density

We present the first of two papers dedicated to verifying the Australian Epoch of Reionisation pipeline (AusEoRPipe) through simulation. The AusEoRPipe aims to disentangle 21-cm radiation emitted by gas surrounding the very first stars from…

天体物理仪器与方法 · 物理学 2024-04-09 J. L. B. Line , C. M. Trott , J. H. Cook , B. Greig , N. Barry , C. H. Jordan

Euclid preparation. LXVII. Deep learning true galaxy morphologies for weak lensing shear bias calibration

To date, galaxy image simulations for weak lensing surveys usually approximate the light profiles of all galaxies as a single or double S\'ersic profile, neglecting the influence of galaxy substructures and morphologies deviating from such…

宇宙学与河外天体物理 · 物理学 2025-04-09 Euclid Collaboration , B. Csizi , T. Schrabback , S. Grandis , H. Hoekstra , H. Jansen , L. Linke , G. Congedo , A. N. Taylor , A. Amara , S. Andreon , C. Baccigalupi , M. Baldi , S. Bardelli , P. Battaglia , R. Bender , A. Biviano , C. Bodendorf , D. Bonino , E. Branchini , M. Brescia , J. Brinchmann , S. Camera , G. Cañas-Herrera , V. Capobianco , C. Carbone , J. Carretero , S. Casas , F. J. Castander , M. Castellano , G. Castignani , S. Cavuoti , K. C. Chambers , A. Cimatti , C. Colodro-Conde , C. J. Conselice , L. Conversi , Y. Copin , F. Courbin , H. M. Courtois , M. Cropper , A. Da Silva , H. Degaudenzi , G. De Lucia , J. Dinis , H. Dole , M. Douspis , F. Dubath , X. Dupac , S. Dusini , S. Escoffier , M. Farina , R. Farinelli , S. Farrens , F. Faustini , S. Ferriol , S. Fotopoulou , M. Frailis , E. Franceschi , S. Galeotta , B. Gillis , C. Giocoli , J. Gracia-Carpio , A. Grazian , F. Grupp , L. Guzzo , S. V. H. Haugan , W. Holmes , I. Hook , F. Hormuth , A. Hornstrup , P. Hudelot , S. Ilić , K. Jahnke , M. Jhabvala , B. Joachimi , E. Keihänen , S. Kermiche , A. Kiessling , M. Kilbinger , B. Kubik , K. Kuijken , M. Kümmel , M. Kunz , H. Kurki-Suonio , A. M. C. Le Brun , S. Ligori , P. B. Lilje , V. Lindholm , I. Lloro , D. Maino , E. Maiorano , O. Mansutti , S. Marcin , O. Marggraf , K. Markovic , M. Martinelli , N. Martinet , F. Marulli , R. Massey , E. Medinaceli , S. Mei , M. Melchior , Y. Mellier , M. Meneghetti , G. Meylan , A. Mora , M. Moresco , L. Moscardini , S. -M. Niemi , C. Padilla , S. Paltani , F. Pasian , K. Pedersen , V. Pettorino , S. Pires , G. Polenta , M. Poncet , L. A. Popa , F. Raison , A. Renzi , J. Rhodes , G. Riccio , E. Romelli , M. Roncarelli , E. Rossetti , R. Saglia , Z. Sakr , A. G. Sánchez , B. Sartoris , P. Schneider , A. Secroun , G. Seidel , S. Serrano , P. Simon , C. Sirignano , G. Sirri , A. Spurio Mancini , L. Stanco , J. Steinwagner , P. Tallada-Crespí , D. Tavagnacco , H. I. Teplitz , I. Tereno , N. Tessore , S. Toft , R. Toledo-Moreo , F. Torradeflot , I. Tutusaus , E. A. Valentijn , L. Valenziano , J. Valiviita , T. Vassallo , G. Verdoes Kleijn , A. Veropalumbo , Y. Wang , J. Weller , G. Zamorani , E. Zucca , M. Bolzonella , E. Bozzo , C. Burigana , M. Calabrese , D. Di Ferdinando , J. A. Escartin Vigo , S. Matthew , N. Mauri , A. Pezzotta , M. Pöntinen , V. Scottez , M. Tenti , M. Viel , M. Wiesmann , Y. Akrami , V. Allevato , S. Anselmi , M. Archidiacono , F. Atrio-Barandela , M. Ballardini , A. Blanchard , L. Blot , S. Borgani , S. Bruton , R. Cabanac , A. Calabro , A. Cappi , F. Caro , C. S. Carvalho , T. Castro , S. Contarini , A. R. Cooray , G. Desprez , A. Díaz-Sánchez , J. J. Diaz , S. Di Domizio , A. G. Ferrari , P. G. Ferreira , I. Ferrero , A. Finoguenov , A. Fontana , F. Fornari , L. Gabarra , K. Ganga , J. García-Bellido , T. Gasparetto , E. Gaztanaga , F. Giacomini , F. Gianotti , G. Gozaliasl , C. M. Gutierrez , A. Hall , H. Hildebrandt , J. Hjorth , A. Jimenez Muñoz , S. Joudaki , J. J. E. Kajava , V. Kansal , D. Karagiannis , C. C. Kirkpatrick , J. Le Graet , L. Legrand , J. Lesgourgues , T. I. Liaudat , A. Loureiro , J. Macias-Perez , G. Maggio , M. Magliocchetti , C. Mancini , F. Mannucci , R. Maoli , J. Martín-Fleitas , C. J. A. P. Martins , L. Maurin , R. B. Metcalf , M. Miluzio , P. Monaco , A. Montoro , C. Moretti , G. Morgante , Nicholas A. Walton , L. Pagano , L. Patrizii , V. Popa , D. Potter , I. Risso , P. -F. Rocci , M. Sahlén , E. Sarpa , A. Schneider , M. Sereno , J. Stadel , K. Tanidis , C. Tao , G. Testera , R. Teyssier , S. Tosi , A. Troja , M. Tucci , C. Valieri , D. Vergani , G. Verza , P. Vielzeuf

Calibration of weak-lensing shear in the Kilo-Degree Survey

We describe and test the pipeline used to measure the weak lensing shear signal from the Kilo Degree Survey (KiDS). It includes a novel method of `self-calibration' that partially corrects for the effect of noise bias. We also discuss the…

宇宙学与河外天体物理 · 物理学 2017-04-12 Ian Fenech Conti , Ricardo Herbonnet , Henk Hoekstra , Julian Merten , Lance Miller , Massimo Viola

Systematic Bias in Cosmic Shear: Beyond the Fisher Matrix

We describe a method for computing the biases that systematic signals introduce in parameter estimation using a simple extension of the Fisher matrix formalism. This allows us to calculate the offset of the best fit parameters relative to…

天体物理学 · 物理学 2009-11-13 Adam Amara , Alexandre Refregier

Impact of line-of-sight structure on weak lensing observables of galaxy clusters

Weak gravitational lensing observations of galaxy clusters are sensitive to all mass along the line-of-sight, introducing systematic and additional statistical uncertainties due to intervening structures. We quantify their impact on the…

宇宙学与河外天体物理 · 物理学 2025-11-18 Felix Vecchi , David Harvey , James Nightingale , Matthieu Schaller , Joop Schaye , Ethan Tregidga

Shapley Supercluster Survey: mapping the dark matter distribution

We present a 23deg$^2$ weak gravitational lensing survey of the Shapley supercluster core and its surroundings using $gri$ VST images as part of the Shapley Supercluster Survey (ShaSS). This study reveals the overall matter distribution…

宇宙学与河外天体物理 · 物理学 2020-06-24 Yuichi Higuchi , Nobuhiro Okabe , Paola Merluzzi , Christopher Paul Haines , Giovanni Busarello , Aniello Grado , Amata Mercurio

COSMOS: 3D weak lensing and the growth of structure

We present a three dimensional cosmic shear analysis of the Hubble Space Telescope COSMOS survey, the largest ever optical imaging program performed in space. We have measured the shapes of galaxies for the tell-tale distortions caused by…

天体物理学 · 物理学 2009-08-26 Richard Massey , Jason Rhodes , Alexie Leauthaud , Peter Capak , Richard Ellis , Anton Koekemoer , Alexandre Refregier , Nick Scoville , James E. Taylor , Justin Albert , Joel Berge , Catherine Heymans , David Johnston , Jean-Paul Kneib , Yannick Mellier , Bahram Mobasher , Elisabetta Semboloni , Patrick Shopbell , Lidia Tasca , Ludovic Van Waerbeke

UNIONS-3500 Weak Lensing: II. B-mode validation for cosmic shear

At Stage-III sensitivities, cosmic shear $B$ modes unambiguously indicate systematic contamination and are often used to inform data selection and scale cuts for cosmological inference. We validate $B$ modes for the Ultraviolet…

宇宙学与河外天体物理 · 物理学 2026-04-06 C. Daley , A. Guinot , S. Guerrini , F. Hervas-Peters , L. W. K. Goh , C. Murray , M. Kilbinger , A. Wittje , M. J. Hudson , H. Hildebrandt , L. van Waerbeke , A. W. McConnachie

KiDS-1000 cosmic shear reanalysis using MetaCalibration

A number of cosmic shear studies have reported results that are in mild tension with the Planck cosmic microwave measurement. To explore if this can be caused by biases in the shear estimation, we revisit the analysis of data from the…

宇宙学与河外天体物理 · 物理学 2025-10-02 Mijin Yoon , Henk Hoekstra , Shun-Sheng Li , Konrad Kuijken , Lance Miller , Hendrik Hildebrandt , Catherine Heymans , Benjamin Joachimi , Angus H. Wright , Marika Asgari , Jan Luca van den Busch , Robert Reischke , Benjamin Stölzner

Point-Spread Function errors for weak lensing - density cross-correlations. Application to UNIONS

Aims:Calibrating the point spread function (PSF) is a fundamental part of weak gravitational lensing analyses. Even with corrected galaxy images, imperfect calibrations can introduce biases. We propose an analytical framework for…

宇宙学与河外天体物理 · 物理学 2024-10-30 Ziwen Zhang , Martin Kilbinger , Fabian Hervas Peters , Qinxun Li , Wentao Luo , Lucie Baumont , Jean-Charles Cuillandre , Sebastien Fabbro , Stephen Gwyn , Alan McConnachie , Anna Wittje

The DECADE cosmic shear project I: A new weak lensing shape catalog of 107 million galaxies

We present the Dark Energy Camera All Data Everywhere (DECADE) weak lensing dataset: a catalog of 107 million galaxies observed by the Dark Energy Camera (DECam) in the northern Galactic cap. This catalog was assembled from public DECam…

宇宙学与河外天体物理 · 物理学 2025-10-24 D. Anbajagane , C. Chang , Z. Zhang , C. Y. Tan , M. Adamow , L. F. Secco , M. R. Becker , P. S. Ferguson , A. Drlica-Wagner , R. A. Gruendl , K. Herron , A. Tong , M. A. Troxel , D. Sanchez-Cid , I. Sevilla-Noarbe , N. Chicoine , R. Teixeira , A. Alarcon , D. Suson , A. N. Alsina , A. Amon , C. R. Bom , J. A. Carballo-Bello , W. Cerny , A. Choi , Y. Choi , C. Doux , K. Eckert , M. Gatti , D. Gruen , D. J. James , M. Jarvis , N. Kuropatkin , C. E. Martínez-Vázquez , P. Massana , S. Mau , J. McCullough , G. E. Medina , B. Mutlu-Pakdil , M. Navabi , N. E. D. Noël , A. B. Pace , J. Prat , M. Raveri , A. H. Riley , E. S. Rykoff , J. D. Sakowska , D. J. Sand , L. Santana-Silva , T. Shin , M. Soares-Santos , G. S. Stringfellow , A. K. Vivas , M. Yamamoto

A systematic study of projection biases in the Weak Lensing analysis of cosmic shear and the combination of galaxy clustering and galaxy-galaxy lensing

This paper presents the results of a systematic study of projection biases in the Weak Lensing analysis of cosmic shear and the combination of galaxy clustering and galaxy-galaxy lensing using data collected during the first-year of running…

宇宙学与河外天体物理 · 物理学 2024-11-27 P. R. V. Chintalapati , G. Gutierrez , M. H. L. S. Wang