Publications (93)
Towards cosmology with Void Lensing: how to find voids sensitive to weak-lensing and numerically interpret them
Renan Boschetti, Pauline Vielzeuf, Marie-Claude Cousinou +2
In this work, we present a study of the void lensing signal or the excess surface mass density (ESMD) around cosmic voids. First, we propose a new void-finder algorithm that is des…
The Sixteenth Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra
Romina Ahumada, Carlos Allende Prieto, Andres Almeida +310
This paper documents the sixteenth data release (DR16) from the Sloan Digital Sky Surveys; the fourth and penultimate from the fourth phase (SDSS-IV). This is the first release of…
A statistical study of multiply-imaged systems in the lensing cluster Abell 68
Johan Richard, Jean-Paul Kneib, Eric Jullo +8
We have carried out an extensive spectroscopic survey with the Keck and VLT telescopes, targeting lensed galaxies in the background of the massive cluster Abell 68. Spectroscopic m…
Mapping substructure in the HST Frontier Fields cluster lenses and in cosmological simulations
Priyamvada Natarajan, Urmila Chadayammuri, Mathilde Jauzac +14
We map the lensing-inferred substructure in the first three clusters observed by the Hubble Space Telescope Frontier Fields Initiative (HSTFF): Abell 2744 (z = 0.308), MACSJ0416, (…
The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Large-scale Structure Catalogs for Cosmological Analysis
Ashley J. Ross, Julian Bautista, Rita Tojeiro +53
We present large-scale structure catalogs from the completed extended Baryon Oscillation Spectroscopic Survey (eBOSS). Derived from Sloan Digital Sky Survey (SDSS) -IV Data Release…
The behaviour of dark matter associated with 4 bright cluster galaxies in the 10kpc core of Abell 3827
Richard Massey, Liliya Williams, Renske Smit +20
Galaxy cluster Abell 3827 hosts the stellar remnants of four almost equally bright elliptical galaxies within a core of radius 10kpc. Such corrugation of the stellar distribution i…
The Completed SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: Growth rate of structure measurement from cosmic voids
Marie Aubert, Marie-Claude Cousinou, Stéphanie Escoffier +19
We present a void clustering analysis in configuration-space using the completed Sloan Digital Sky Survey IV (SDSS-IV) extended Baryon Oscillation Spectroscopic Survey (eBOSS) DR16…
Measuring the Geometry of the Universe from Weak Gravitational Lensing behind Galaxy Groups in the HST COSMOS survey
James E. Taylor, Richard J. Massey, Alexie Leauthaud +12
Gravitational lensing can provide pure geometric tests of the structure of space-time, for instance by determining empirically the angular diameter distance-redshift relation. This…
The Uchuu Simulations: Data Release 1 and Dark Matter Halo Concentrations
Tomoaki Ishiyama, Francisco Prada, Anatoly A. Klypin +11
We introduce the Uchuu suite of large high-resolution cosmological -body simulations. The largest simulation, named Uchuu, consists of 2.1 trillion () dark matter parti…
AMICO galaxy clusters in KiDS-DR3: Measurement of the halo bias and power spectrum normalization from a stacked weak lensing analysis
Lorenzo Ingoglia, Giovanni Covone, Mauro Sereno +19
Galaxy clusters are biased tracers of the underlying matter density field. At very large radii beyond about 10 Mpc/\textit{h}, the shear profile shows evidence of a second-halo ter…
Dark Matter Astrometry: Accuracy of sub-halo positions for the measurement of self-interaction cross sections
David Harvey, Richard Massey, Thomas Kitching +5
Direct evidence for the existence of dark matter and measurements of its interaction cross-section have been provided by the physical offset between dark matter and intra- cluster…
DESI-253.2534+26.8843: A New Einstein Cross Spectroscopically Confirmed with VLT/MUSE and Modeled with GIGA-Lens
Aleksandar Cikota, Ivonne Toro Bertolla, Xiaosheng Huang +10
Gravitational lensing provides unique insights into astrophysics and cosmology, including the determination of galaxy mass profiles and constraining cosmological parameters. We pre…
The Detailed Science Case for the Maunakea Spectroscopic Explorer, 2019 edition
The MSE Science Team, Carine Babusiaux, Maria Bergemann +258
(Abridged) The Maunakea Spectroscopic Explorer (MSE) is an end-to-end science platform for the design, execution and scientific exploitation of spectroscopic surveys. It will unvei…
Constraining self-interacting scalar field dark matter with strong gravitational lensing in cluster scale?
Raquel Galazo GarcÃa, Eric Jullo, Emmanuel Nezri +1
We present a method to investigate the properties of solitonic cores in the Thomas-Fermi regime under the self-interacting scalar field dark matter framework. Using semi-analytical…
Dark matter dynamics in Abell 3827: new data consistent with standard Cold Dark Matter
Richard Massey, David Harvey, Jori Liesenborgs +23
We present integral field spectroscopy of galaxy cluster Abell 3827, using ALMA and VLT/MUSE. It reveals an unusual configuration of strong gravitational lensing in the cluster cor…
Weak Lensing Galaxy Cluster Field Reconstruction
Eric Jullo, Sandrine Pires, Mathilde Jauzac +1
In this paper, we compare three methods to reconstruct galaxy cluster density fields with weak lensing data. The first method called FLens integrates an inpainting concept to inver…
Abell 370 revisited: refurbished Hubble imaging of the first strong lensing cluster
Johan Richard, Jean-Paul Kneib, Marceau Limousin +2
We present a strong lensing analysis of the galaxy cluster Abell 370 (z=0.375) based on the recent multicolor ACS images obtained as part of the Early Release Observation (ERO) tha…
Multi-scale cluster lens mass mapping I. Strong Lensing modelling
Eric Jullo, Jean-Paul Kneib
We propose a novel technique to refine the modelling of galaxy clusters mass distribution using gravitational lensing. The idea is to combine the strengths of both "parametric" and…
X-ray, lensing and Sunyaev Zel'dovich triaxial analysis of Abell 1835 out to R_{200}
Andrea Morandi, Marceau Limousin, Jack Sayers +6
Measuring the intrinsic shape and orientation of dark matter (DM) and intracluster (IC) gas in galaxy clusters is crucial to constraining their formation and evolution, and for enh…
DESI and DECaLS (D&D): galaxy-galaxy lensing measurements with 1% survey and its forecast
Ji Yao, Huanyuan Shan, Pengjie Zhang +19
The shear measurement from DECaLS (Dark Energy Camera Legacy Survey) provides an excellent opportunity for galaxy-galaxy lensing study with DESI (Dark Energy Spectroscopic Instrume…
The Hidden Fortress: Structure and substructure of the complex strong lensing cluster SDSS J1029+2623
Masamune Oguri, Tim Schrabback, Eric Jullo +8
We present Hubble Space Telescope (HST) ACS and WFC3 observations of SDSS J1029+2623, a three-image quasar lens system produced by a foreground cluster at z=0.584. Our strong lensi…
Warm-hot baryons comprise 5-10 per cent of filaments in the cosmic web
Dominique Eckert, Mathilde Jauzac, HuanYuan Shan +8
Observations of the cosmic microwave background indicate that baryons account for 5% of the Universe's total energy content. In the local Universe, the census of all observed baryo…
Hubble Space Telescope Observations of a Spectacular New Strong-lensing Galaxy Cluster - MACSJ1149.5+2223 at z=0.544
Graham P. Smith, Harald Ebeling, Marceau Limousin +9
We present Advanced Camera for Surveys observations of MACSJ1149.5+2223, an X-ray luminous galaxy cluster at z=0.544 discovered by the Massive Cluster Survey. The data reveal at le…
CURLING -- II. Improvement on the Inference from Pixelized Cluster Strong Lens Modeling
Yushan Xie, Huanyuan Shan, Yiping Shu +9
Strongly lensed supernovae (glSNe) provide a powerful, independent method to measure the Hubble constant, , through time delays between their multiple images. The accuracy o…
A magnified glance into the dark sector: probing cosmological models with strong lensing in A1689
Juan Magaña, V. Motta, Victor H. Cardenas +2
In this paper we constrain four alternative models to the late cosmic acceleration in the Universe: Chevallier-Polarski-Linder (CPL), interacting dark energy (IDE), Ricci holograph…
Probing dark energy with tomographic weak-lensing aperture mass statistics
Nicolas Martinet, Joachim Harnois-Déraps, Eric Jullo +1
We forecast and optimize the cosmological power of various weak-lensing aperture mass () map statistics for future cosmic shear surveys, including peaks, voids, and the…
XShooter DESI Lens Program: Sample characterization
Eric Jullo, Christophe Boghossian, Luderic Chapel +6
Large imaging surveys in cosmology are detecting orders of magnitude more lens systems than known so far. This unprecedented dataset will lead to robust constraints on cosmology an…
Scatter in the satellite galaxy SHMR: fitting functions, scaling relations & physical processes from the IllustrisTNG simulation
Anna Niemiec, Carlo Giocoli, Ethan Cohen +3
The connection between galaxies and their dark matter haloes is often described with the Stellar-to-Halo Mass relation (SHMR). Satellite galaxies in clusters have been shown to fol…
A Weak-Lensing Mass Reconstruction of the Large-Scale Filament Feeding the Massive Galaxy Cluster MACSJ0717.5+3745
Mathilde Jauzac, Eric Jullo, Jean-Paul Kneib +6
We report the first weak-lensing detection of a large-scale filament funneling matter onto the core of the massive galaxy cluster MACSJ0717.5+3745. Our analysis is based on a mosai…
Are Ultra-faint Galaxies at z=6-8 Responsible for Cosmic Reionization ? Combined Constraints from the Hubble Frontier Fields Clusters and Parallels
Hakim Atek, Johan Richard, Mathilde Jauzac +8
We use deep Hubble Space Telescope imaging of the Frontier Fields to accurately measure the galaxy rest-frame ultraviolet luminosity function (UV LF) in the redshift range $z \sim…
Weak lensing mass map and peak statistics in Canada-France-Hawaii Telescope Stripe 82 survey
HuanYuan Shan, Jean-Paul Kneib, Johan Comparat +10
We present a weak lensing mass map covering ~124 square degrees of the Canada-France-Hawaii Telescope Stripe 82 Survey (CS82). We study the statistics of rare peaks in the map, inc…
The BUFFALO HST Survey
Charles L. Steinhardt, Mathilde Jauzac, Ana Acebron +91
The Beyond Ultra-deep Frontier Fields and Legacy Observations (BUFFALO) is a 101 orbit + 101 parallel Cycle 25 Hubble Space Telescope Treasury program taking data from 2018-2020. B…
Strong Lensing as a Probe of the Mass Distribution Beyond the Einstein Radius. Mass & Light in SL2S J08544-0121, a Galaxy Group at z=0.35
Marceau Limousin, Eric Jullo, Johan Richard +6
Precise modelling of strong lensing systems can be affected by external mass distributions, e.g. the group or cluster within which the lens is embedded. In this article, we propose…
Stochastic bias of colour-selected BAO tracers by joint clustering-weak lensing analysis
Johan Comparat, Eric Jullo, Jean-Paul Kneib +15
The baryon acoustic oscillation (BAO) feature in the two-point correlation function of galaxies supplies a standard ruler to probe the expansion history of the Universe. We study h…
The evolution of the [OII], Hβ and [OIII] emission-line luminosity functions over the last nine billions years
Johan Comparat, Guangtun Zhu, Violeta Gonzalez-Perez +12
Emission line galaxies are one of the main tracers of the large-scale structure to be targeted by the next-generation dark energy surveys. To provide a better understanding of the…
Dark matter stripping in galaxy clusters: a look at the Stellar to Halo Mass relation in the Illustris simulation
Anna Niemiec, Eric Jullo, Carlo Giocoli +2
Satellite galaxies in galaxy clusters represent a significant fraction of the global galaxy population. Because of the unusual dense environment of clusters, their evolution is dri…
MultiDarkLens Simulations: weak lensing light-cones and data base presentation
Carlo Giocoli, Eric Jullo, R. Benton Metcalf +10
In this paper we present a large database of weak lensing light cones constructed using different snapshots from the Big MultiDark simulation (BigMDPL). The ray-tracing through dif…
The Density Profiles of Massive, Relaxed Galaxy Clusters. I. The Total Density Over Three Decades in Radius
Andrew B. Newman, Tommaso Treu, Richard S. Ellis +4
Clusters of galaxies are excellent locations to probe the distribution of baryons and dark matter (DM) over a wide range of scales. We study a sample of seven massive, relaxed gala…
Keck spectroscopic survey of strongly lensed galaxies in Abell 1703: further evidence for a relaxed, unimodal cluster
Johan Richard, Liuyi Pei, Marceau Limousin +2
Strong gravitational lensing is a unique tool to model with great accuracy the inner mass distribution of massive galaxy clusters. In particular, clusters with large Einstein radii…
Owl-z: a Bayesian tool to select z \geq 7 quasars
Meriam Ezziati, Roser Pello, Jean-Gabriel Cuby +9
This paper presents Owl-z, a Bayesian code aiming at identifying z \geq 7 quasars in wide field optical and near-infrared surveys. By construction,the code can also be used to sele…
Beyond the Ultra-deep Frontier Fields And Legacy Observations (BUFFALO): a high-resolution strong + weak-lensing view of Abell 370
Anna Niemiec, Mathilde Jauzac, Dominique Eckert +17
The HST treasury program BUFFALO provides extended wide-field imaging of the six Hubble Frontier Fields galaxy clusters. Here we present the combined strong and weak-lensing analys…
Fast Weak Lensing Simulations with Halo Model
Carlo Giocoli, Sandra Di Meo, Massimo Meneghetti +6
Full ray-tracing maps of gravitational lensing, constructed from N-Body simulations, represent a fundamental tool to interpret present and future weak lensing data. However the lim…
Clustering properties of -selected galaxies at
Ginevra Favole, Johan Comparat, Francisco Prada +15
Current and future large redshift surveys, as the Sloan Digital Sky Survey IV extended Baryon Oscillation Spectroscopic Survey (SDSS-IV/eBOSS) or the Dark Energy Spectroscopic Inst…
Hubble Frontier Fields : A High Precision Strong Lensing Analysis of Galaxy Cluster MACSJ0416.1-2403 using ~200 Multiple Images
Mathilde Jauzac, Benjamin Clément, Marceau Limousin +11
We present a high-precision mass model of the galaxy cluster MACSJ0416.1-2403, based on a strong-gravitational-lensing analysis of the recently acquired Hubble Space Telescope Fron…
CURLING - I. The Influence of Point-like Image Approximation on the Outcomes of Cluster Strong Lens Modeling
Yushan Xie, Huanyuan Shan, Nan Li +11
Cluster-scale strong lensing is a powerful tool for exploring the properties of dark matter and constraining cosmological models. However, due to the complex parameter space, pixel…
Probing the z>6 Universe with the first Hubble Frontier Fields cluster Abell 2744
Hakim Atek, Johan Richard, Jean-Paul Kneib +8
The Hubble Frontier Fields (HFF) program combines the capabilities of the Hubble Space Telescope (HST) with the gravitational lensing of massive galaxy clusters to probe the distan…
Weak Lensing Analysis of CODEX Clusters using Dark Energy Camera Legacy Survey : Mass-Richness Relation
Anirut Phriksee, Eric Jullo, Marceau Limousin +5
We present the weak lensing analysis of 279 CODEX clusters using imaging data from 4200 of the DECam Legacy Survey (DECaLS) Data Release 3. The cluster sample resu…
Observational evidence of galaxy assembly bias
Antonio D. Montero-Dorta, Enrique Perez, Francisco Prada +10
We analyze the spectra of 300,000 luminous red galaxies (LRGs) with stellar masses from the SDSS-III Baryon Oscillation Spectroscopic Survey (BOSS).…
The DESI Experiment Part II: Instrument Design
DESI Collaboration, Amir Aghamousa, Jessica Aguilar +290
DESI (Dark Energy Spectropic Instrument) is a Stage IV ground-based dark energy experiment that will study baryon acoustic oscillations and the growth of structure through redshift…
Synthetic light cone catalogues of modern redshift and weak lensing surveys with AbacusSummit
Boryana Hadzhiyska, Sihan Yuan, Chris Blake +32
The joint analysis of different cosmological probes, such as galaxy clustering and weak lensing, can potentially yield invaluable insights into the nature of the primordial Univers…
Does Concentration Drive the Scatter in the Stellar-to-Halo Mass Relation of Galaxy Clusters?
Ying Zu, Huanyuan Shan, Jun Zhang +10
Concentration is one of the key dark matter halo properties that could drive the scatter in the stellar-to-halo mass relation of massive clusters. We derive robust photometric stel…
The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the extended Baryon Oscillation Spectroscopic Survey and from the second phase of the Apache Point Observatory Galactic Evolution Experiment
Bela Abolfathi, D. S. Aguado, Gabriela Aguilar +344
The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since July 2014. This paper describes the second data release from this phase, and the fourtee…
The 0.1<z<1.65 evolution of the bright end of the [OII] luminosity function
Johan Comparat, Johan Richard, Jean-Paul Kneib +33
We present the [OII] luminosity function measured in the redshift range 0.1<z<1.65 with unprecedented depth and accuracy. Our measurements are based on medium resolution flux-calib…
Characterising Strong Lensing Galaxy Clusters using the Millennium-XXL and MOKA simulations
Carlo Giocoli, Mario Bonamigo, Marceau Limousin +5
In this paper we investigate the strong lensing statistics in galaxy clusters. We extract dark matter haloes from the Millennium-XXL simulation, compute their Einstein radius distr…
Dark Matter in Galaxy Clusters: a Parametric Strong Lensing Approach
Marceau Limousin, Benjamin Beauchesne, Eric Jullo
We present a parametric strong lensing analysis of three massive clusters. Our aim is to probe the inner shape of dark matter haloes, in particular the existence of a core. We adop…
First results from the VIMOS-IFU survey of gravitationally lensing clusters at z~0.2
Giovanni Covone, Jean-Paul Kneib, Genevieve Soucail +2
We present the on-going observational program of a VIMOS Integral Field Unit survey of the central regions of massive, gravitational lensing galaxy clusters at redshift z~0.2. We h…
Redshift evolution and covariances for joint lensing and clustering studies with DESI Y1
Sihan Yuan, Chris Blake, Alex Krolewski +48
Galaxy-galaxy lensing (GGL) and clustering measurements from the Dark Energy Spectroscopic Instrument Year 1 (DESI Y1) dataset promise to yield unprecedented combined-probe tests o…
The Spectroscopic Stage-5 Experiment
Robert Besuner, Arjun Dey, Alex Drlica-Wagner +106
The existence, properties, and dynamics of the dark sectors of our universe pose fundamental challenges to our current model of physics, and large-scale astronomical surveys may be…
Unveiling the Intrinsic Alignment of Galaxies with Self-Calibration and DECaLS DR3 data
Ji Yao, Huanyuan Shan, Pengjie Zhang +2
Galaxy intrinsic alignment (IA) is both a source of systematic contamination to cosmic shear measurement and its cosmological applications, and a source of valuable information on…
Measurement of a Metallicity Gradient in a z=2 Galaxy: Implications for Inside-Out Assembly Histories
Tucker Jones, Richard S. Ellis, Eric Jullo +1
We present near-infrared imaging spectroscopy of the strongly-lensed z=2.00 galaxy SDSS J120601.69+514227.8 (`the Clone arc'). Using OSIRIS on the Keck 2 telescope with laser guide…
Hubble Frontier Fields : A High-Precision Strong-Lensing Mass Model of the Massive Galaxy Cluster Abell 2744 using 180 Multiple Images
Mathilde Jauzac, Johan Richard, Eric Jullo +11
We present a high-precision mass model of galaxy cluster Abell 2744, based on a strong-gravitational-lensing analysis of the \emph{Hubble Space Telescope Frontier Fields} (HFF) ima…
COSMOS: Stochastic bias from measurements of weak lensing and galaxy clustering
Eric Jullo, Jason Rhodes, Alina Kiessling +6
In the theory of structure formation, galaxies are biased tracers of the underlying matter density field. The statistical relation between galaxy and matter density field is common…
A Telescope Search for Decaying Relic Axions
Daniel Grin, Giovanni Covone, Jean-Paul Kneib +3
A search for optical line emission from the two-photon decay of relic axions was conducted in the galaxy clusters Abell 2667 and 2390, using spectra from the VIMOS (Visible Multi-O…
LCDM halo substructure properties revealed with high resolution and large volume cosmological simulations
Ãngeles Moliné, Miguel A. Sánchez-Conde, Alejandra Aguirre-Santaella +8
We investigate the structural properties, distribution and abundance of LCDM dark matter subhaloes using the Phi-4096 and Uchuu suite of N-body cosmological simulations. Thanks to…
BUFFALO/Flashlights: Constraints on the abundance of lensed supergiant stars in the Spock galaxy at redshift 1
Jose M. Diego, Sung Kei Li, Ashish K. Meena +27
We present a constraint on the abundance of supergiant (SG) stars at redshift z approx. 1, based on recent observations of a strongly lensed arc at this redshift. First we derive a…
The Origin and Evolution of Metallicity Gradients: Probing the Mode of Mass Assembly at z=2
Tucker Jones, Richard S. Ellis, Johan Richard +1
We present and discuss measurements of the gas-phase metallicity gradient in gravitationally lensed galaxies at z=2.0-2.4 based on adaptive optics-assisted imaging spectroscopy wit…
Strong lensing modeling in galaxy clusters as a promising method to test cosmography I. Parametric dark energy models
Juan Magana, Ana Acebron, Veronica Motta +3
In this paper we probe five cosmological models for which the dark energy equation of state parameter, , is parameterized as a function of redshift using strong lensing data…
Halo Mass-Concentration Relation at High-Mass End
Weiwei Xu, Huanyuan Shan, Ran Li +6
The concentration-mass (c-M) relation encodes the key information of the assembly history of the dark matter halos, however its behavior at the high mass end has not been measured…
The Thirteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-IV Survey MApping Nearby Galaxies at Apache Point Observatory
SDSS Collaboration, Franco D. Albareti, Carlos Allende Prieto +335
The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) began observations in July 2014. It pursues three core programs: APOGEE-2, MaNGA, and eBOSS. In addition, eBOSS cont…
Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe
Michael R. Blanton, Matthew A. Bershady, Bela Abolfathi +350
We describe the Sloan Digital Sky Survey IV (SDSS-IV), a project encompassing three major spectroscopic programs. The Apache Point Observatory Galactic Evolution Experiment 2 (APOG…
The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Overview and Early Data
Kyle S. Dawson, Jean-Paul Kneib, Will J. Percival +143
The Extended Baryon Oscillation Spectroscopic Survey (eBOSS) will conduct novel cosmological observations using the BOSS spectrograph at Apache Point Observatory. Observations will…
Uchuu-GC galaxies and AGN: Cosmic variance forecasts of high-redshift AGN for JWST, Euclid, and LSST
Taira Oogi, Tomoaki Ishiyama, Francisco Prada +10
Measurements of the luminosity function of active galactic nuclei (AGN) at high redshift () are expected to suffer from field-to-field variance, including cosmic and Po…
SLICE -- Combining Strong Lensing and X-ray in AC 114. Further Insights into the Merger Scenario
Marceau Limousin, Benjamin Beauchesne, Keren Sharon +14
AC114 is a historically significant galaxy cluster, being one of the first strong lensing clusters detected from the ground in the early 1990s, prior to the launch of the HST. Desp…
Multi-wavelength lens reconstruction of a -detected star-bursting galaxy
Nicholas Timmons, Asantha Cooray, Dominik A. Riechers +21
We present a source-plane reconstruction of a and -detected gravitationally-lensed dusty star-forming galaxy (DSFG) at using {\it Hubble}, S…
LoCuSS: First Results from Strong-lensing Analysis of 20 Massive Galaxy Clusters at z~0.2
Johan Richard, Graham P. Smith, Jean-Paul Kneib +13
We present a statistical analysis of a sample of 20 strong lensing clusters drawn from the Local Cluster Substructure Survey (LoCuSS), based on high resolution Hubble Space Telesco…
Space-quality data from balloon-borne telescopes: the High Altitude Lensing Observatory (HALO)
Jason Rhodes, Benjamin Dobke, Jeffrey Booth +36
We present a method for attaining sub-arcsecond pointing stability during sub- orbital balloon flights, as designed for in the High Altitude Lensing Observatory (HALO) concept. The…
hybrid-Lenstool: A self-consistent algorithm to model galaxy clusters with strong- and weak-lensing simultaneously
Anna Niemiec, Mathilde Jauzac, Eric Jullo +5
We present a new galaxy cluster lens modeling approach, hybrid-Lenstool, that is implemented in the publicly available modeling software Lenstool. hybrid-Lenstool combines a parame…
Stellar-to-halo mass relation of cluster galaxies
Anna Niemiec, Eric Jullo, Marceau Limousin +12
In the hierarchical formation model, galaxy clusters grow by accretion of smaller groups or isolated galaxies. During the infall into the centre of a cluster, the properties of acc…
Hubble Frontier Fields: The Geometry and Dynamics of the Massive Galaxy Cluster Merger MACSJ0416.1-2403
Mathilde Jauzac, Eric Jullo, Dominique Eckert +13
We use a joint optical/X-ray analysis to constrain the geometry and history of the ongoing merging event in the massive galaxy cluster MACSJ0416.1-2403 (z=0.397). Our investigation…
Hubble Frontier Fields: systematic errors in strong lensing models of galaxy clusters - Implications for cosmography
Ana Acebron, Eric Jullo, Marceau Limousin +5
Strong gravitational lensing by galaxy clusters is a fundamental tool to study dark matter and constrain the geometry of the Universe. Recently, the Hubble Space Telescope Frontier…
Cosmological Constraints from Strong Gravitational Lensing in Galaxy Clusters
Eric Jullo, Priyamvada Natarajan, Jean-Paul Kneib +4
Current efforts in observational cosmology are focused on characterizing the mass-energy content of the Universe. We present results from a geometric test based on strong lensing i…
Source plane reconstruction of the giant gravitational arc in Abell 2667: a candidate Wolf-Rayet galaxy at z~1
Shuo Cao, Giovanni Covone, Eric Jullo +3
We present a new analysis of HST, Spitzer telescope imaging and VLT imaging and spectroscopic data of a bright lensed galaxy at =1.0334 in the lensing cluster Abell~2667. Using…
A Bayesian approach to strong lensing modelling of galaxy clusters
Eric Jullo, Jean-Paul Kneib, Marceau Limousin +3
In this paper, we describe a procedure for modelling strong lensing galaxy clusters with parametric methods, and to rank models quantitatively using the Bayesian evidence. We use a…
The Detailed Science Case for the Maunakea Spectroscopic Explorer: the Composition and Dynamics of the Faint Universe
Alan McConnachie, Carine Babusiaux, Michael Balogh +173
MSE is an 11.25m aperture observatory with a 1.5 square degree field of view that will be fully dedicated to multi-object spectroscopy. More than 3200 fibres will feed spectrograph…
Angular systematics-free cosmological analysis of galaxy clustering in configuration space
Romain Paviot, Sylvain de la Torre, Arnaud de Mattia +9
Galaxy redshift surveys are subject to incompleteness and inhomogeneous sampling due to the various constraints inherent to spectroscopic observations. This can introduce systemati…
PySCo-EFT and ECOSMOG-EFT: a tandem of N-body simulation codes for the Effective Field Theory of Dark Energy
Himanish Ganjoo, Yann Rasera, Emilio Bellini +18
Modified gravity theories constitute viable alternatives to the standard cosmological model for explaining the observed late-time accelerated expansion of the Universe. The Effecti…
Strong gravitational lensing probes of the particle nature of dark matter
Leonidas A. Moustakas, Kevork Abazajian, Andrew Benson +44
There is a vast menagerie of plausible candidates for the constituents of dark matter, both within and beyond extensions of the Standard Model of particle physics. Each of these ca…
An unbiased method of measuring the ratio of two data sets
Zeyang Sun, Pengjie Zhang, Fuyu Dong +5
In certain cases of astronomical data analysis, the meaningful physical quantity to extract is the ratio between two data sets. Examples include the lensing ratio, the interlop…
The Strong Gravitational Lens Finding Challenge
R. Benton Metcalf, M. Meneghetti, Camille Avestruz +33
Large scale imaging surveys will increase the number of galaxy-scale strong lensing candidates by maybe three orders of magnitudes beyond the number known today. Finding these rare…
Impact of baryons in cosmic shear analyses with tomographic aperture mass statistics
Nicolas Martinet, Tiago Castro, Joachim Harnois-Déraps +3
NonGaussian cosmic shear statistics based on weak-lensing aperture mass () maps can outperform the classical shear two-point correlation function (-2PCF) in terms o…
Where is the matter in the Merging Cluster Abell 2218?
ÃrdÃs ElÃasdóttir, Marceau Limousin, Johan Richard +6
We present a parametric strong lensing model of the cluster Abell 2218 based on HST ACS data. We constrain the lens model using 8 previously known multiply imaged systems, of which…
The DESI Experiment Part I: Science,Targeting, and Survey Design
DESI Collaboration, Amir Aghamousa, Jessica Aguilar +290
DESI (Dark Energy Spectroscopic Instrument) is a Stage IV ground-based dark energy experiment that will study baryon acoustic oscillations (BAO) and the growth of structure through…
New Constraints on the Faint-end of the UV Luminosity Function at z~7-8 using the Gravitational Lensing of the Hubble Frontier Fields Cluster A2744
Hakim Atek, Johan Richard, Jean-Paul Kneib +8
Exploiting the power of gravitational lensing, the Hubble Frontier Fields (HFF) program aims at observing six massive galaxy clusters to explore the distant Universe far beyond the…