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We use measurements from the South Pole Telescope (SPT) Sunyaev Zel'dovich (SZ) cluster survey in combination with X-ray measurements to constrain cosmological parameters. We present a statistical method that fits for the scaling relations…

We present the first weak-lensing-based scaling relation between galaxy cluster mass, M_wl, and integrated Compton parameter Y_sph. Observations of 18 galaxy clusters at z~0.2 were obtained with the Subaru 8.2-m telescope and the…

We present cosmology results combining galaxy clustering and weak gravitational lensing measured in the full six years (Y6) of observations by the Dark Energy Survey (DES) covering $\sim$5000 deg$^2$. We perform a large-scale structure…

Cosmology and Nongalactic Astrophysics · Physics 2026-01-30 DES Collaboration , T. M. C. Abbott , M. Adamow , M. Aguena , A. Alarcon , S. S. Allam , O. Alves , A. Amon , D. Anbajagane , F. Andrade-Oliveira , S. Avila , D. Bacon , E. J. Baxter , J. Beas-Gonzalez , K. Bechtol , M. R. Becker , G. M. Bernstein , E. Bertin , J. Blazek , S. Bocquet , D. Brooks , D. Brout , H. Camacho , G. Camacho-Ciurana , R. Camilleri , G. Campailla , A. Campos , A. Carnero Rosell , M. Carrasco Kind , J. Carretero , P. Carrilho , F. J. Castander , R. Cawthon , C. Chang , A. Choi , J. M. Coloma-Nadal , M. Costanzi , M. Crocce , W. d'Assignies , L. N. da Costa , M. E. da Silva Pereira , T. M. Davis , J. De Vicente , J. DeRose , H. T. Diehl , S. Dodelson , P. Doel , C. Doux , A. Drlica-Wagner , T. F. Eifler , J. Elvin-Poole , J. Estrada , S. Everett , A. E. Evrard , J. Fang , A. Farahi , A. Ferté , B. Flaugher , P. Fosalba , J. Frieman , J. García-Bellido , M. Gatti , E. Gaztanaga , G. Giannini , P. Giles , K. Glazebrook , M. Gorsuch , D. Gruen , R. A. Gruendl , J. Gschwend , G. Gutierrez , I. Harrison , W. G. Hartley , E. Henning , K. Herner , S. R. Hinton , D. L. Hollowood , K. Honscheid , E. M. Huff , D. Huterer , B. Jain , D. J. James , M. Jarvis , N. Jeffrey , T. Jeltema , T. Kacprzak , S. Kent , A. Kovacs , E. Krause , R. Kron , K. Kuehn , O. Lahav , S. Lee , E. Legnani , C. Lidman , H. Lin , N. MacCrann , M. Manera , T. Manning , J. L. Marshall , S. Mau , J. McCullough , J. Mena-Fernández , F. Menanteau , R. Miquel , J. J. Mohr , J. Muir , J. Myles , R. C. Nichol , B. Nord , J. H. O'Donnell , R. L. C. Ogando , A. Palmese , M. Paterno , J. Peoples , W. J. Percival , D. Petravick , A. Pieres , A. A. Plazas Malagón , A. Porredon , A. Pourtsidou , J. Prat , C. Preston , M. Raveri , W. Riquelme , M. Rodriguez-Monroy , P. Rogozenski , A. K. Romer , A. Roodman , R. Rosenfeld , A. J. Ross , E. Rozo , E. S. Rykoff , S. Samuroff , C. Sánchez , E. Sanchez , D. Sanchez Cid , T. Schutt , I. Sevilla-Noarbe , E. Sheldon , N. Sherman , T. Shin , M. Smith , M. Soares-Santos , E. Suchyta , M. E. C. Swanson , M. Tabbutt , G. Tarle , D. Thomas , C. To , A. Tong , L. Toribio San Cipriano , M. A. Troxel , M. Tsedrik , D. L. Tucker , V. Vikram , A. R. Walker , N. Weaverdyck , R. H. Wechsler , D. H. Weinberg , J. Weller , V. Wetzell , A. Whyley , R. D. Wilkinson , P. Wiseman , H. -Y. Wu , M. Yamamoto , B. Yanny , B. Yin , G. Zacharegkas , Y. Zhang , J. Zuntz

We present an analysis aimed at combining cosmological constraints from number counts of galaxy clusters identified through the Sunyaev-Zeldovich effect, obtained with the South Pole Telescope (SPT), and from Lyman-$\alpha$ spectra obtained…

Cosmology and Nongalactic Astrophysics · Physics 2022-07-20 Matteo Esposito , Vid Iršič , Matteo Costanzi , Stefano Borgani , Alexandro Saro , Matteo Viel

We examine the relation between the galaxy cluster mass M and Sunyaev-Zeldovich (SZ) effect signal D_A^2 Y for a sample of 19 objects for which weak lensing (WL) mass measurements obtained from Subaru Telescope data are available in the…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-20 Planck Collaboration , P. A. R. Ade , N. Aghanim , M. Arnaud , M. Ashdown , F. Atrio-Barandela , J. Aumont , C. Baccigalupi , A. Balbi , A. J. Banday , R. B. Barreiro , J. G. Bartlett , E. Battaner , R. Battye , K. Benabed , J. -P. Bernard , M. Bersanelli , R. Bhatia , I. Bikmaev , H. Böhringer , A. Bonaldi , J. R. Bond , S. Borgani , J. Borrill , F. R. Bouchet , H. Bourdin , M. L. Brown , M. Bucher , R. Burenin , C. Burigana , R. C. Butler , P. Cabella , J. -F. Cardoso , P. Carvalho , A. Chamballu , L. -Y Chiang , G. Chon , D. L. Clements , S. Colafrancesco , A. Coulais , F. Cuttaia , A. Da Silva , H. Dahle , R. J. Davis , P. de Bernardis , G. de Gasperis , J. Delabrouille , J. Démoclès , F. -X. Désert , J. M. Diego , K. Dolag , H. Dole , S. Donzelli , O. Doré , M. Douspis , X. Dupac , G. Efstathiou , T. A. Enßlin , H. K. Eriksen , F. Finelli , I. Flores-Cacho , O. Forni , M. Frailis , E. Franceschi , M. Frommert , S. Galeotta , K. Ganga , R. T. Génova-Santos , M. Giard , Y. Giraud-Héraud , J. González-Nuevo , K. M. Górski , A. Gregorio , A. Gruppuso , F. K. Hansen , D. Harrison , C. Hernández-Monteagudo , D. Herranz , S. R. Hildebrandt , E. Hivon , M. Hobson , W. A. Holmes , K. M. Huffenberger , G. Hurier , T. Jagemann , M. Juvela , E. Keihänen , I. Khamitov , R. Kneissl , J. Knoche , M. Kunz , H. Kurki-Suonio , G. Lagache , J. -M. Lamarre , A. Lasenby , C. R. Lawrence , M. Le Jeune , S. Leach , R. Leonardi , A. Liddle , P. B. Lilje , M. Linden-Vørnle , M. López-Caniego , G. Luzzi , J. F. Macías-Pérez , D. Maino , N. Mandolesi , M. Maris , F. Marleau , D. J. Marshall , E. Martínez-González , S. Masi , S. Matarrese , F. Matthai , P. Mazzotta , P. R. Meinhold , A. Melchiorri , J. -B. Melin , L. Mendes , S. Mitra , M. -A. Miville-Deschênes , L. Montier , G. Morgante , D. Munshi , P. Natoli , H. U. Nørgaard-Nielsen , F. Noviello , S. Osborne , F. Pajot , D. Paoletti , B. Partridge , T. J. Pearson , O. Perdereau , F. Perrotta , F. Piacentini , M. Piat , E. Pierpaoli , R. Piffaretti , P. Platania , E. Pointecouteau , G. Polenta , N. Ponthieu , L. Popa , T. Poutanen , G. W. Pratt , S. Prunet , J. -L. Puget , J. P. Rachen , R. Rebolo , M. Reinecke , M. Remazeilles , C. Renault , S. Ricciardi , I. Ristorcelli , G. Rocha , C. Rosset , M. Rossetti , J. A. Rubiño-Martín , B. Rusholme , M. Sandri , G. Savini , D. Scott , J. -L. Starck , F. Stivoli , V. Stolyarov , R. Sudiwala , R. Sunyaev , D. Sutton , A. -S. Suur-Uski , J. -F. Sygnet , J. A. Tauber , L. Terenzi , L. Toffolatti , M. Tomasi , M. Tristram , L. Valenziano , B. Van Tent , P. Vielva , F. Villa , N. Vittorio , B. D. Wandelt , J. Weller , S. D. M. White , D. Yvon , A. Zacchei , A. Zonca

We forecast the impact of weak lensing (WL) cluster mass calibration on the cosmological constraints from the X-ray selected galaxy cluster counts in the upcoming eROSITA survey. We employ a prototype cosmology pipeline to analyze mock…

Cosmology and Nongalactic Astrophysics · Physics 2019-07-10 Sebastian Grandis , Joseph J. Mohr , Joerg P. Dietrich , Sebastian Bocquet , Alexandro Saro , Matthias Klein , Maria Paulus , Raffaella Capasso

We measure the weak-lensing masses and galaxy distributions of four massive galaxy clusters observed during the Science Verification phase of the Dark Energy Survey. This pathfinder study is meant to 1) validate the DECam imager for the…

The thermal Sunyaev-Zel'dovich (tSZ) effect signal is widely recognized as a robust mass proxy of galaxy clusters with small intrinsic scatter. However, recent observational calibration of the tSZ scaling relation using weak lensing (WL)…

Cosmology and Nongalactic Astrophysics · Physics 2016-07-27 Masato Shirasaki , Daisuke Nagai , Erwin T. Lau

We show how to place constraints on cluster physics by stacking the weak lensing signals from multiple clusters found through the Sunyaev-Zeldovich (SZ) effect. For a survey that covers about 200 sq. deg. both in SZ and weak lensing…

Astrophysics · Physics 2008-11-26 Carolyn Sealfon , Licia Verde , Raul Jimenez

Ongoing and future wide-field galaxy surveys can be used to locate a number of clusters of galaxies with cosmic shear measurement alone. We study constraints on cosmological models using statistics of weak lensing selected galaxy clusters.…

Cosmology and Nongalactic Astrophysics · Physics 2016-02-17 Masato Shirasaki , Takashi Hamana , Naoki Yoshida

The South Pole Telescope (SPT) is conducting a Sunyaev-Zel'dovich (SZ) effect survey over large areas of the southern sky, searching for massive galaxy clusters to high redshift. In this preliminary study, we focus on a 40 square-degree…

We propose counting peaks in weak lensing (WL) maps, as a function of their height, to probe models of dark energy and to constrain cosmological parameters. Because peaks can be identified in two-dimensional WL maps directly, they can…

Cosmology and Nongalactic Astrophysics · Physics 2010-04-06 Jan M. Kratochvil , Zoltán Haiman , Morgan May

Weak gravitational lensing allows one to reconstruct the spatial distribution of the projected mass density across the sky. These "mass maps" provide a powerful tool for studying cosmology as they probe both luminous and dark matter. In…

Scaling properties of galaxy cluster observables with mass provide central insights into the processes shaping clusters. Calibrating proxies for cluster mass will be crucial to cluster cosmology with upcoming surveys like eROSITA and…

Cosmology and Nongalactic Astrophysics · Physics 2014-05-08 Holger Israel , Thomas H. Reiprich , Thomas Erben , Richard J. Massey , Craig L. Sarazin , Peter Schneider , Alexey Vikhlinin

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…