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We aim at investigating potential biases in lensing and X-ray methods to measure the cluster mass profiles. We do so by performing realistic simulations of lensing and X-ray observations that are subsequently analyzed using observational…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 M. Meneghetti , E. Rasia , J. Merten , F. Bellagamba , S. Ettori , P. Mazzotta , K. Dolag

This is the second paper in a series exploring the X-ray properties of galaxy clusters optically selected by the Subaru Hyper Suprime-Cam (HSC) survey, using data from the SRG/eROSITA Final Equatorial-Depth Survey (eFEDS). We aim to…

We use gravitational lens models and X-ray spectral analysis of ten X-ray luminous galaxy clusters at z~0.2 to study the impact of cluster substructure on attempts to normalize the matter power spectrum. We estimate that unrelaxed clusters…

We present a Hubble Space Telescope (HST) weak gravitational lensing study of nine distant and massive galaxy clusters with redshifts $1.0 \lesssim z \lesssim 1.7$ ($z_\mathrm{median} = 1.4$) and Sunyaev Zel'dovich (SZ) detection…

We study the bias and scatter in mass measurements of galaxy clusters resulting from fitting a spherically-symmetric Navarro, Frenk & White model to the reduced tangential shear profile measured in weak lensing observations. The reduced…

Cosmology and Nongalactic Astrophysics · Physics 2011-09-23 Matthew R. Becker , Andrey V. Kravtsov

We present results from a weak lensing analysis of the galaxy cluster A1689 (z=0.183) based on deep wide-field imaging data taken with Suprime-Cam on Subaru telescope. A maximum entropy method has been used to reconstruct directly the…

Astrophysics · Physics 2008-11-26 Keiichi Umetsu , Masahiro Takada , Tom Broadhurst

Kaiser & Squires have proposed a technique for mapping the dark matter in galaxy clusters using the coherent weak distortion of background galaxy images caused by gravitational lensing. We investigate the effectiveness of this technique…

Astrophysics · Physics 2015-06-24 Gillian Wilson , Shaun Cole , Carlos S. Frenk

We have developed a method for detecting clusters in large imaging surveys, based on the detection of structures in galaxy density maps made in slices of photometric redshifts. This method was first applied to the Canada France Hawaii…

We describe the construction of the Brera Multi-scale Wavelet (BMW) HRI Cluster Survey, a deep sample of serendipitous X-ray selected clusters of galaxies based on the ROSAT HRI archive. This is the first cluster catalog exploiting the high…

This paper presents 52 X-ray bright galaxy clusters selected within the 11 deg$^2$ XMM-LSS survey. 51 of them have spectroscopic redshifts ($0.05<z<1.06$), one is identified at $z_{\rm phot}=1.9$, and all together make the high-purity…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-22 N. Clerc , C. Adami , M. Lieu , B. Maughan , F. Pacaud , M. Pierre , T. Sadibekova , G. P. Smith , P. Valageas , B. Altieri , C. Benoist , S. Maurogordato , J. P. Willis

We have started PISCES project; a panoramic imaging and spectroscopic survey of distant clusters on Subaru. It exploits the unique wide-field imaging capability of Suprime-Cam, which provides a 34'x27' field of view corresponding to a…

Astrophysics · Physics 2015-06-24 Tadayuki Kodama , the PISCES team

Galaxy cluster-scale strong gravitational lensing systems are rare yet valuable tools for investigating the properties of dark matter and dark energy, as well as providing the opportunity to study the distant universe at flux levels and…

Astrophysics of Galaxies · Physics 2026-01-19 Zhejian Zhang , Nan Li , Shude Mao , Hu Zou , Zizhao He , Mingxiang Fu , Shenzhe Cui

The lensing signal around galaxy clusters can, in principle, be used to test detailed predictions for their average mass profile from numerical simulations. However, the intrinsic shape of the profiles can be smeared out when a sample that…

Cosmology and Nongalactic Astrophysics · Physics 2017-03-08 Keiichi Umetsu , Benedikt Diemer

Masses of clusters of galaxies from weak gravitational lensing analyses of ever larger samples are increasingly used as the reference to which baryonic scaling relations are compared. In this paper we revisit the analysis of a sample of 50…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-23 Henk Hoekstra , Ricardo Herbonnet , Adam Muzzin , Arif Babul , Andisheh Mahdavi , Massimo Viola , Marcello Cacciato

We study the radial total mass profiles of nine massive galaxy clusters ($M_\mathrm{200c}>5\times10^{14}$ M$_\odot$) in the redshift range $0.2 < z < 0.9$. These clusters were observed as part of the CLASH, HFF, BUFFALO, and CLASH-VLT…

Cosmology and Nongalactic Astrophysics · Physics 2025-06-25 Enrico Maraboli , Claudio Grillo , Pietro Bergamini , Carlo Giocoli

There are only two methods for estimating the mass distribution in the outer regions of galaxy clusters, where virial equilibrium does not hold: weak gravitational lensing and identification of caustics in redshift space. For the first…

Astrophysics · Physics 2009-11-13 Antonaldo Diaferio , Margaret J. Geller , Kenneth J. Rines

We introduce a new method to determine galaxy cluster membership based solely on photometric properties. We adopt a machine learning approach to recover a cluster membership probability from galaxy photometric parameters and finally derive…

Cosmology and Nongalactic Astrophysics · Physics 2020-02-26 P. A. A. Lopes , A. L. B. Ribeiro

We present a Bayesian population modeling method to analyze the abundance of galaxy clusters identified by the South Pole Telescope (SPT) with a simultaneous mass calibration using weak gravitational lensing data from the Dark Energy Survey…

Cosmology and Nongalactic Astrophysics · Physics 2024-06-24 S. Bocquet , S. Grandis , L. E. Bleem , M. Klein , J. J. Mohr , M. Aguena , A. Alarcon , S. Allam , S. W. Allen , O. Alves , A. Amon , B. Ansarinejad , D. Bacon , M. Bayliss , K. Bechtol , M. R. Becker , B. A. Benson , G. M. Bernstein , M. Brodwin , D. Brooks , A. Campos , R. E. A. Canning , J. E. Carlstrom , A. Carnero Rosell , M. Carrasco Kind , J. Carretero , R. Cawthon , C. Chang , R. Chen , A. Choi , J. Cordero , M. Costanzi , L. N. da Costa , M. E. S. Pereira , C. Davis , T. de Haan , J. DeRose , S. Desai , H. T. Diehl , S. Dodelson , P. Doel , C. Doux , A. Drlica-Wagner , K. Eckert , J. Elvin-Poole , S. Everett , I. Ferrero , A. Ferté , A. M. Flores , J. Frieman , J. García-Bellido , M. Gatti , G. Giannini , M. D. Gladders , D. Gruen , R. A. Gruendl , I. Harrison , W. G. Hartley , K. Herner , S. R. Hinton , D. L. Hollowood , W. L. Holzapfel , K. Honscheid , N. Huang , E. M. Huff , D. J. James , M. Jarvis , F. Kéruzoré , G. Khullar , K. Kim , R. Kraft , K. Kuehn , N. Kuropatkin , S. Lee , P. -F. Leget , N. MacCrann , G. Mahler , A. Mantz , J. L. Marshall , J. McCullough , M. McDonald , J. Mena-Fernández , R. Miquel , J. Myles , A. Navarro-Alsina , R. L. C. Ogando , A. Palmese , S. Pandey , A. Pieres , A. A. Plazas Malagón , J. Prat , M. Raveri , C. L. Reichardt , J. Roberson , R. P. Rollins , A. K. Romer , C. Romero , A. Roodman , A. J. Ross , E. S. Rykoff , L. Salvati , C. Sánchez , E. Sanchez , D. Sanchez Cid , A. Saro , T. Schrabback , M. Schubnell , L. F. Secco , I. Sevilla-Noarbe , K. Sharon , E. Sheldon , T. Shin , M. Smith , T. Somboonpanyakul , B. Stalder , A. A. Stark , V. Strazzullo , E. Suchyta , M. E. C. Swanson , G. Tarle , C. To , M. A. Troxel , I. Tutusaus , T. N. Varga , A. von der Linden , N. Weaverdyck , J. Weller , P. Wiseman , B. Yanny , B. Yin , M. Young , Y. Zhang , J. Zuntz

Galaxy clusters provide an excellent probe in various research fields in astrophysics and cosmology. However, the number of galaxy clusters detected so far in the $AKARI$ North Ecliptic Pole (NEP) field is limited. In this work, we provide…

We present a spectroscopic survey of field galaxies and lensed sources in the vicinity of the strong lensing galaxy cluster known as the Carousel lens at z=0.49. Using both Gemini/GMOS slitmask spectra and deep VLT/MUSE observations, we…

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