Publications (117)
Examining the local Universe isotropy with galaxy cluster velocity dispersion scaling relations
A. Pandya, K. Migkas, T. H. Reiprich +7
In standard cosmology, the late Universe is assumed to be statistically homogeneous and isotropic. However, a recent study based on galaxy clusters by Migkas et al. (2021, arXiv:21…
The 2-10 keV unabsorbed luminosity function of AGN from the XMM-Newton LSS, CDFS and COSMOS surveys
P. Ranalli, E. Koulouridis, I. Georgantopoulos +15
The XMM-LSS, XMM-COSMOS, and XMM-CDFS surveys are complementary in terms of sky coverage and depth. Together, they form a clean sample with the least possible variance in instrumen…
The SRG/eROSITA All-Sky Survey: SRG/eROSITA cross-calibration with Chandra and XMM-Newton using galaxy cluster gas temperatures
K. Migkas, D. Kox, G. Schellenberger +17
Galaxy cluster gas temperatures () play a crucial role in many cosmological and astrophysical studies. However, it has been shown that measurements can vary between differen…
The XMM-LSS cluster sample and its cosmological applications
M. Pierre, F. Pacaud, the XMM-LSS consortium
We present the X-ray source detection procedure that we have developed for the purpose of assembling and characterizing controlled samples of cluster of galaxies for the XMM Large…
Cosmology with XMM galaxy clusters: the X-CLASS/GROND catalogue and photometric redshifts
J. Ridl, N. Clerc, T. Sadibekova +11
The XMM Cluster Archive Super Survey (X-CLASS) is a serendipitously-detected X-ray-selected sample of 845 galaxy clusters based on 2774 XMM archival observations and covering appro…
EROSITA Spectro-Imaging Analysis of the Abell 3408 Galaxy Cluster
J. Iljenkarevic, T. H. Reiprich, F. Pacaud +11
The X-ray telescope eROSITA onboard the newly launched SRG mission serendipitously observed the galaxy cluster A3408 () during the PV observation of the AGN 1H0707-495. D…
The XXL Survey: I. Scientific motivations - XMM-Newton observing plan - Follow-up observations and simulation programme
M. Pierre, F. Pacaud, C. Adami +89
We present the XXL Survey, the largest XMM programme totaling some 6.9 Ms to date and involving an international consortium of roughly 100 members. The XXL Survey covers two extrag…
Structure detection in the D1 CFHTLS deep field using accurate photometric redshifts: a benchmark
A. Mazure, C. Adami, M. Pierre +9
We investigate structures in the D1 CFHTLS deep field in order to test the method that will be applied to generate homogeneous samples of clusters and groups of galaxies in order t…
The XXL Survey: XXXIII. Chandra Constraints on the AGN Contamination of z > 1 XXL Galaxy Clusters
C. H. A. Logan, B. J. Maughan, M. N. Bremer +11
Context. The XMM-XXL survey uses observations from XMM-Newton to detect clusters of galaxies over a wide range in mass and redshift. The moderate PSF of XMM-Newton means that point…
The XXL Survey LIV. X-ray Luminosity Function and Luminosity-Mass Relation of Optically Selected Galaxy Groups
C. Wood, B. J. Maughan, J. P. Crossett +10
The overlap between the GAMA spectroscopic survey and the XXL X-ray survey was used to study the X-ray properties of optically-selected groups of galaxies. Forced X-ray aperture ph…
The XXL Survey XIX. A realistic population of simulated X-ray AGN: Comparison of models with observations
E. Koulouridis, L. Faccioli, A. M. C. Le Brun +11
Modern cosmological simulations rely heavily on feedback from active galactic nuclei (AGN) in order to stave off overcooling in massive galaxies and galaxy groups and clusters. An…
The XXL Survey X: K-band luminosity - weak-lensing mass relation for groups and clusters of galaxies
F. Ziparo, G. P. Smith, S. L. Mulroy +15
We present the K-band luminosity-halo mass relation, , for a subsample of 20 of the 100 brightest clusters in the XXL Survey observed with WIRCam at the Canad…
The XXL survey: first results and future
M. Pierre, C. Adami, M. Birkinshaw +108
The XXL survey currently covers two 25 sq. deg. patches with XMM observations of ~10ks. We summarise the scientific results associated with the first release of the XXL data set, t…
The XXL Survey XXXII. Spatial clustering of the XXL-S AGN
M. Plionis, L. Koutoulidis, E. Koulouridis +9
The XMM-XXL Survey spans two fields of deg each observed for more than 6Ms with XMM, which provided a sample of tens of thousands of point sources with a flux limit of…
The cosmological analysis of X-ray cluster surveys: IV. Testing ASpiX with template-based cosmological simulations
A. Valotti, M. Pierre, A. Farahi +5
Following extensive tests on analytical toy-catalogues (paper III), we present the results of a more realistic study over a 711 deg2 template-based cosmological simulation. Dark ma…
The XXL Survey III. Luminosity-temperature relation of the Bright Cluster Sample
P. A. Giles, B. J. Maughan, F. Pacaud +13
The XXL Survey is the largest homogeneous survey carried out with XMM-Newton. Covering an area of 50 deg, the survey contains several hundred galaxy clusters out to a redshif…
The Abell 3391/95 galaxy cluster system: A 15 Mpc intergalactic medium emission filament, a warm gas bridge, infalling matter clumps, and (re-) accelerated plasma discovered by combining SRG/eROSITA data with ASKAP/EMU and DECam data
T. H. Reiprich, A. Veronica, F. Pacaud +44
We used dedicated SRG/eROSITA X-ray, ASKAP/EMU radio, and DECam optical observations of a 15 sq.deg region around the interacting galaxy cluster system A3391/95 to study the warm-h…
Non-parametric modeling of the intra-cluster gas using APEX-SZ bolometer imaging data
K. Basu, Y. -Y. Zhang, M. W. Sommer +23
We demonstrate the usability of mm-wavelength imaging data obtained from the APEX-SZ bolometer array to derive the radial temperature profile of the hot intra-cluster gas out to ra…
Understanding X-ray and optical selection of galaxy clusters: A comparison of the XXL and CAMIRA cluster catalogues obtained in the common XXL-HSC SSP area
J. P. Willis, M. Oguri, M. E. Ramos-Ceja +31
Large samples of galaxy clusters provide knowledge of both astrophysics in the most massive virialised environments and the properties of the cosmological model that defines our Un…
Galaxy cluster scaling relations measured with APEX-SZ
A. N. Bender, J. Kennedy, P. A. R. Ade +30
We present thermal Sunyaev-Zel'dovich effect (SZE) measurements for 42 galaxy clusters observed at 150 GHz with the APEX-SZ experiment. For each cluster, we model the pressure prof…
The XMM large scale structure survey: optical vs. X-ray classifications of active galactic nuclei and the unified scheme
O. Garcet, P. Gandhi, E. Gosset +25
Our goal is to characterize AGN populations by comparing their X-ray and optical classifications. We present a sample of 99 spectroscopically identified X-ray point sources in the…
Discovery of a >13 Mpc long X-ray filament between two galaxy clusters beyond three times their virial radii
J. Dietl, F. Pacaud, T. H. Reiprich +5
The new Spectrum Roentgen Gamma (SRG) eROSITA X-ray telescope has a superior response to extended soft X-rays, which makes it ideal for studying low X-ray surface brightness emissi…
The XMM-LSS survey. Survey design and first results
M. Pierre, I. Valtchanov, B. Altieri +36
We have designed a medium deep large area X-ray survey with XMM - the XMM Large Scale Structure survey, XMM-LSS - with the scope of extending the cosmological tests attempted using…
Galaxy evolution in clusters from z=1 to z=0
S. Andreon, J. Willis, H. Quintana +3
The XMM--LSS project is detecting distant clusters of low mass, quite comparable in mass to the ones in the local universe. This allows a direct comparison of galaxy properties at…
The SRG/eROSITA All-Sky Survey: X-ray selection function models for the eRASS1 galaxy cluster cosmology
N. Clerc, J. Comparat, R. Seppi +17
Characterising galaxy cluster populations from catalog of sources selected in astronomical surveys requires knowledge of sample incompleteness, known as selection function. The fir…
Probing cosmic isotropy with a new X-ray galaxy cluster sample through the scaling relation
K. Migkas, G. Schellenberger, T. H. Reiprich +3
The isotropy of the late Universe is an assumption greatly used in astronomy. However, many studies have recently reported deviations from isotropy with a definitive conclusion yet…
Colour-detected clusters in the XMM Large Scale Structure Survey
S. Andreon, J. Willis, H. Quintana +3
We present first results on the use of a colour space filter for detecting galaxy clusters at cosmological redshifts in the XMM Large Scale Structure Survey. All clusters studied,…
The SRG-eROSITA All-Sky Survey : Constraints on f(R) Gravity from Cluster Abundance
E. Artis, V. Ghirardini, E. Bulbul +28
The evolution of the cluster mass function traces the growth of the linear density perturbations and can be utilized for constraining the parameters of cosmological and alternative…
NIKA2 observations of 3 low-mass galaxy clusters at : pressure profile and - relation
R. Adam, M. Ricci, D. Eckert +64
Three galaxy clusters selected from the XXL X-ray survey at high redshift and low mass ( and M) were observed with NIKA2 to imag…
The XXL Survey: XXIII. The Mass Scale of XXL Clusters from Ensemble Spectroscopy
A. Farahi, V. Guglielmo, A. E. Evrard +34
An X-ray survey with the XMM-Newton telescope, XMM-XXL, has identified hundreds of galaxy groups and clusters in two 25 deg fields. Combining spectroscopic and X-ray observatio…
The cosmological analysis of X-ray cluster surveys; III. 4D X-ray observable diagrams
M. Pierre, A. Valotti, L. Faccioli +4
Despite compelling theoretical arguments, the use of clusters as cosmological probes is, in practice, frequently questioned because of the many uncertainties impinging on cluster m…
The XMM-LSS survey: the Class 1 cluster sample over the extended 11 deg and its spatial distribution
N. Clerc, C. Adami, M. Lieu +10
This paper presents 52 X-ray bright galaxy clusters selected within the 11 deg XMM-LSS survey. 51 of them have spectroscopic redshifts (), one is identified at $z_…
The XXL Survey XXV. Cosmological analysis of the C1 cluster number counts
F. Pacaud, M. Pierre, J. -B. Melin +25
Context. We present an estimation of cosmological parameters with clusters of galaxies. Aims. We constrain the , , and parameters from a stand-alone sample of X-ray…
Projection effects in galaxy cluster samples: insights from X-ray redshifts
M. E. Ramos-Ceja, F. Pacaud, T. H. Reiprich +3
Up to now, the largest sample of galaxy clusters selected in X-rays comes from the ROSAT All-Sky Survey (RASS). Although there have been many interesting clusters discovered with t…
Angular correlation functions of X-ray point-like sources in the full exposure XMM-LSS field
A. Elyiv, N. Clerc, M. Plionis +8
Our aim is to study the large-scale structure of different types of AGN using the medium-deep XMM-LSS survey. We measure the two-point angular correlation function of ~ 5700 and 25…
The SRG/eROSITA All-Sky Survey DR2: Cumulative X-ray catalogues from the first three surveys and multi-wavelength counterparts in the western Galactic hemisphere
M. E. Ramos-Ceja, G. Lamer, M. Salvato +111
The paper presents the second data release of the SRG/eROSITA all‑sky survey, providing catalogues of nearly two million X‑ray sources (point‑like and extended) from the first thre…
Weak-lensing mass calibration of the Sunyaev-Zel'dovich effect using APEX-SZ galaxy clusters
A. Nagarajan, F. Pacaud, M. Sommer +16
The use of galaxy clusters as precision cosmological probes relies on an accurate determination of their masses. However, inferring the relationship between cluster mass and observ…
Simulation-Based Inference for Cluster Cosmology with Set-Based Neural Network Architectures
S. Zelmer, E. Bulbul, K. Lehman +18
The unprecedented statistical power of galaxy cluster catalogs from the SRG (Spectrum Roentgen Gamma)/eROSITA All-Sky Survey provides a unique opportunity to place stringent constr…
The XXL Survey XXVIII. Galaxy luminosity functions of the XXL-N clusters
M. Ricci, C. Benoist, S. Maurogordato +13
The main goal of this study is to investigate the LF of a sample of 142 X-ray selected clusters, with spectroscopic redshift confirmation and a well defined selection function, spa…
Synthetic simulations of the extragalactic sky seen by eROSITA. I. Pre-launch selection functions from Monte-Carlo simulations
N. Clerc, M. E. Ramos-Ceja, J. Ridl +15
Studies of galaxy clusters provide stringent constraints on models of structure formation. Provided that selection effects are under control, large X-ray surveys are well suited to…
The XXL Survey: XXXIV. Double irony in XXL-North. A tale of two radio galaxies in a supercluster at z = 0.14
C. Horellou, H. T. Intema, V. SmolÄiÄ +21
We show how the XXL multiwavelength survey can be used to shed light on radio galaxies and their environment. Two prominent radio galaxies were identified in a visual examination o…
The XXL Survey XXIV. The final detection pipeline
L. Faccioli, F. Pacaud, J. -L. Sauvageot +7
A well characterised detection pipeline is an important ingredient for X-ray cluster surveys. We present the final development of the XXL Survey pipeline. The pipeline optimally us…
The SRG/eROSITA all-sky survey: First X-ray catalogues and data release of the western Galactic hemisphere
A. Merloni, G. Lamer, T. Liu +142
The eROSITA telescope array aboard the Spektrum Roentgen Gamma (SRG) satellite began surveying the sky in December 2019, with the aim of producing all-sky X-ray source lists and sk…
The eROSITA Final Equatorial-Depth Survey (eFEDS): X-ray stacking analysis of Subaru's optically selected clusters spanning low richness regime
N. T. Nguyen-Dang, N. Ota, N. Okabe +17
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/eROS…
Multi-frequency imaging of the galaxy cluster Abell 2163 using the Sunyaev-Zel'dovich Effect
M. Nord, K. Basu, F. Pacaud +30
We used the APEX-SZ and LABOCA bolometer cameras on the APEX telescope to map the decrement of the Sunyaev-Zeldovich effect at 150 GHz and the increment at 345 GHz toward the galax…
The XMM Large Scale Structure survey: The X-ray pipeline and survey selection function
F. Pacaud, M. Pierre, A. Refregier +11
We present the X-ray pipeline developed for the purpose of the cluster search in the XMM-LSS survey. It is based on a two-stage procedure via a dedicated handling of the Poisson na…
Euclid preparation: TBD. The impact of line-of-sight projections on the covariance between galaxy cluster multi-wavelength observable properties -- insights from hydrodynamic simulations
Euclid Collaboration, A. Ragagnin, A. Saro +240
Cluster cosmology can benefit from combining multi-wavelength studies, which can benefit from characterising the correlation coefficients between different mass-observable relation…
Euclid preparation. Methodology for validating the Euclid Catalogue of Galaxy Clusters using external data
Euclid Collaboration, J. -B. Melin, S. A. Stanford +315
We present our methodology for identifying known clusters as counterparts to objects in the Euclid Catalogue of Galaxy Clusters (ECGC). Euclid is expected to detect a large number…
The SRG/eROSITA All-Sky Survey: The first catalog of galaxy clusters and groups in the Western Galactic Hemisphere
E. Bulbul, A. Liu, M. Kluge +31
Clusters of galaxies can be used as powerful probes to study astrophysical processes on large scales, test theories of the growth of structure, and constrain cosmological models. T…
The XMM-LSS cluster sample and its cosmological applications. Prospects for the XMM next decade
M. Pierre, F. Pacaud, J. B. Melin +1
The well defined selection function of the XMM-LSS survey enables a simultaneous modelling of the observed cluster number counts and of the evolution of the L-T relation. We presen…
The SRG/eROSITA all-sky survey: The morphologies of clusters of galaxies: II. The intrinsic distributions of morphological parameters
J. S. Sanders, Y. E. Bahar, E. Bulbul +11
X-ray selected surveys of clusters of galaxies have been reported to contain more regular cool core clusters compared to samples selected using the Sunyaev-Zel'dovich (SZ) effect.…
Galaxy groups and low mass clusters at z<0.6: A perspective from the XMM Large Scale Structure survey
J. P. Willis, F. Pacaud, M. Pierre
Galaxy groups and low-mass clusters provide important laboratories in which to study X-ray gas physics and the interplay between galaxy evolution and environmental effects. The X-r…
The XXL survey XXXV. The role of cluster mass in AGN activity
E. Koulouridis, M. Ricci, P. Giles +15
We present the results of a study of the AGN density in a homogeneous and well-studied sample of 167 bona fide X-ray galaxy clusters () from the XXL Survey. The results…
The XXL Survey XLIV. Sunyaev-Zel'dovich mapping of a low-mass cluster at z~1: a multi-wavelength approach
M. Ricci, R. Adam, D. Eckert +62
In this paper, we present resolved observations of the Sunyaev-Zel'dovich (SZ) effect, obtained with the NIKA2 camera, towards the cluster of galaxies XLSSC102, a relatively low-ma…
Redshift evolution of the 1.4 GHz volume averaged radio luminosity function in clusters of galaxies
M. W. Sommer, K. Basu, F. Pacaud +2
By cross-correlating large samples of galaxy clusters with publicly available radio source catalogs, we construct the volume-averaged radio luminosity function (RLF) in clusters of…
The eROSITA Final Equatorial-Depth Survey (eFEDS): LOFAR view of brightest cluster galaxies and AGN feedback
T. Pasini, M. Brüggen, D. N. Hoang +15
During the performance verification phase of the SRG/eROSITA telescope, the eROSITA Final Equatorial-Depth Survey (eFEDS) has been carried out. It covers a 140 deg field locate…
Cosmological implications of the anisotropy of ten galaxy cluster scaling relations
K. Migkas, F. Pacaud, G. Schellenberger +5
The hypothesis that the late Universe is isotropic and homogeneous is adopted by most cosmological studies. The expansion rate is thought to be spatially constant, while bulk…
The XMM Large-Scale Structure Survey: An initial sample of galaxy groups and clusters to a redshift z<0.6
J. P. Willis, F. Pacaud, I. Valtchanov +14
We present X-ray and optical spectroscopic observations of twelve galaxy groups and clusters identified within the XMM Large-Scale Structure (LSS) survey. Groups and clusters are s…
The Spitzer-South Pole Telescope Deep Field: Survey Design and IRAC Catalogs
M. L. N. Ashby, S. A. Stanford, M. Brodwin +18
The Spitzer-South Pole Telescope Deep Field (SSDF) is a wide-area survey using Spitzer's Infrared Array Camera (IRAC) to cover 94 square degrees of extragalactic sky, making it the…
The eROSITA Final Equatorial Depth Survey (eFEDS): The X-ray catalog
H. Brunner, T. Liu, G. Lamer +35
Context. The eROSITA X-ray telescope on board the Spectrum-Roentgen-Gamma (SRG) observatory combines a large field of view and collecting area in the energy range 0.2 to $\si…
The XXL Survey VIII: MUSE characterisation of intracluster light in a z0.53 cluster of galaxies
C. Adami, E. Pompei, T. Sadibekova +11
Within a cluster, gravitational effects can lead to the removal of stars from their parent galaxies. Gas hydrodynamical effects can additionally strip gas and dust from galaxies. T…
The XXL survey XIV. AAOmega redshifts for the southern XXL field
C. Lidman, F. Ardila, M. Owers +15
We present a catalogue containing the redshifts of 3,660 X-ray selected targets in the XXL southern field. The redshifts were obtained with the AAOmega spectrograph and 2dF fibre p…
The Hot and Energetic Universe: The evolution of galaxy groups and clusters
E. Pointecouteau, T. H. Reiprich, C. Adami +45
Major astrophysical questions related to the formation and evolution of structures, and more specifically of galaxy groups and clusters, will still be open in the coming decade and…
The XXL Survey: VI. The 1000 brightest X-ray point sources
S. Fotopoulou, F. Pacaud, S. Paltani +36
X-ray extragalactic surveys are ideal laboratories for the study of the evolution and clustering of active galactic nuclei (AGN). The XXL Survey spans two fields of a combined 50 $…
The XXL survey XV: Evidence for dry merger driven BCG growth in XXL-100-GC X-ray clusters
S. Lavoie, J. P. Willis, J. Democles +33
The growth of brightest cluster galaxies is closely related to the properties of their host cluster. We present evidence for dry mergers as the dominant source of BCG mass growth a…
The X-CLASS survey: A catalogue of 1646 X-ray-selected galaxy clusters up to z1.5
E. Koulouridis, N. Clerc, T. Sadibekova +25
Cosmological probes based on galaxy clusters rely on cluster number counts and large-scale structure information. X-ray cluster surveys are well suited for this purpose, since they…
The eROSITA Final Equatorial-Depth Survey (eFEDS): A complete census of X-ray properties of Subaru Hyper Suprime-Cam weak lensing shear-selected clusters in the eFEDS footprint
Miriam E. Ramos-Ceja, M. Oguri, S. Miyazaki +23
The eFEDS survey is a proof-of-concept mini-survey designed to demonstrate the survey science capabilities of SRG/eROSITA. It covers an area of 140 square degrees where 542 galaxy…
The XXL survey: XLII. Detection and characterization of the galaxy population of distant galaxy clusters in the XXL-N/VIDEO field: A tale of variety
A. Trudeau, C. Garrel, J. Willis +16
Context. Distant galaxy clusters provide an effective laboratory in which to study galaxy evolution in dense environments and at early cosmic times. Aims. We aim to identify distan…
The XMM Large Scale Structure Survey: Properties and Two-Point Angular Correlations of Point-like Sources
P. Gandhi, O. Garcet, L. Disseau +9
We analyze X-ray sources detected over 4.2 pseudo-contiguous sq. deg. in the 0.5-2 keV and 2-10 keV bands down to fluxes of 2x10^{-15} and 8x10^{-15} erg/s/cm^2 respectively, as pa…
X-ray versus infrared selection of distant galaxy clusters: A case study using the XMM-LSS and SpARCS cluster samples
J. P. Willis, M. E. Ramos-Ceja, A. Muzzin +3
We present a comparison of two samples of z>0.8 galaxy clusters selected using different wavelength-dependent techniques and examine the physical differences between them. We consi…
Euclid. I. Overview of the Euclid mission
Euclid Collaboration, Y. Mellier, Abdurro'uf +1134
The current standard model of cosmology successfully describes a variety of measurements, but the nature of its main ingredients, dark matter and dark energy, remains unknown. Eucl…
Discovery of a Supercluster in the eROSITA Final Equatorial Depth Survey: X-ray Properties, Radio Halo, and Double Relics
V. Ghirardini, E. Bulbul, D. N. Hoang +27
We examine the X-ray, optical, and radio properties for the members clusters of a new supercluster discovered during the SRG/eROSITA Performance Verification phase. In the 140 deg2…
The XXL Survey: XXII. The XXL-North spectrophotometric sample and galaxy stellar mass function in X-ray detected groups and clusters
V. Guglielmo, B. M. Poggianti, B. Vulcani +42
The fraction of galaxies bound in groups in the nearby Universe is high (50% at z~0). Systematic studies of galaxy properties in groups are important in order to improve our unders…
The eROSITA Final Equatorial-Depth Survey (eFEDS): Characterization of Morphological Properties of Galaxy Groups and Clusters
V. Ghirardini, E. Bahar, E. Bulbul +16
Understanding the cluster population of clusters of galaxies is of the utmost importance for using cluster samples in both astrophysical and cosmological studies. We present an in-…
Sunyaev-Zel'dovich Effect Observations of the Bullet Cluster (1E 0657-56) with APEX-SZ
N. W. Halverson, T. Lanting, P. A. R. Ade +33
We present observations of the Sunyaev-Zel'dovich effect (SZE) in the Bullet cluster (1E 0657--56) using the APEX-SZ instrument at 150 GHz with a resolution of 1 arcmin. The main r…
The SRG/eROSITA all-sky survey: X-ray scaling relations of galaxy groups and clusters in the western Galactic hemisphere
M. E. Ramos-Ceja, L. Fiorino, E. Bulbul +19
The soft X-ray telescope on board the Spectrum-Roentgen-Gamma (SRG) mission, eROSITA (extended ROentgen Survey with an Imaging Telescope Array), has produced the largest sample to…
The SRG/eROSITA All-Sky Survey : Constraints on the structure growth from cluster number counts
E. Artis, E. Bulbul, S. Grandis +29
Beyond testing the current cosmological paradigm, cluster number counts can also be utilized to investigate the discrepancies currently affecting current cosmological measurements.…
The XMM-LSS survey: the Class 1 cluster sample over the initial 5 square degrees and its cosmological modelling
F. Pacaud, M. Pierre, C. Adami +30
We present a sample of 29 galaxy clusters from the XMM-LSS survey over an area of some 5deg2 out to a redshift of z=1.05. The sample clusters, which represent about half of the X-r…
The XXL Survey VII: A supercluster of galaxies at z=0.43
E. Pompei, C. Adami, D. Eckert +15
The XXL Survey is the largest homogeneous and contiguous survey carried out with XMM-Newton. Covering an area of 50 square degrees distributed over two fields, it primarily investi…
The XXL Survey. XIII. Baryon content of the bright cluster sample
D. Eckert, S. Ettori, J. Coupon +20
Traditionally, galaxy clusters have been expected to retain all the material accreted since their formation epoch. For this reason, their matter content should be representative of…
The XXL Survey: XVI. The clustering of X-ray selected galaxy clusters at z~0.3
F. Marulli, A. Veropalumbo, M. Sereno +20
Galaxy clusters trace the highest density peaks in the large-scale structure of the Universe. Their clustering provides a powerful probe that can be exploited in combination with c…
The XXL Survey: XXX. Characterisation of the XLSSsC N01 supercluster and analysis of the galaxy stellar populations
V. Guglielmo, B. M. Poggianti, B. Vulcani +34
Superclusters form from the largest enhancements in the primordial density perturbation field and extend for tens of Mpc, tracing the large-scale structure of the Universe. We char…
Galaxy evolution in clusters up to z=1.0
S. Andreon, J. Willis, H. Quintana +3
We present a combined study of the colour-magnitude relation, colour distribution and luminosity function of a sample of 24 clusters at redshifts 0.3<z<1. The sample is largely com…
The eROSITA Final Equatorial-Depth Survey (eFEDS): Optical confirmation, redshifts, and properties of the cluster and group catalog
M. Klein, M. Oguri, J. J. Mohr +19
The eROSITA Final Equatorial-Depth Survey (eFEDS), covering ~140 square degrees, was performed as part of the performance verification phase of the eROSITA telescope on board of th…
XMM-LSS discovery of a z=1.22 galaxy cluster
M. N. Bremer, I. Valtchanov, J. P. Willis +11
We present details of the discovery of XLSSJ022303.0-043622, a z=1.2 cluster of galaxies. This cluster was identified from its X-ray properties and selected as a z>1 candidate from…
X-Ray Studies of the Abell 3158 Galaxy Cluster with eROSITA
B. Whelan, A. Veronica, F. Pacaud +13
The most nearby clusters are the best places to study physical and enrichment effects in the faint cluster outskirts. A3158 located at z=0.059 is quite extended with a characterist…
The XXL Survey. II. The bright cluster sample: catalogue and luminosity function
F. Pacaud, N. Clerc, P. A. Giles +40
Context. The XXL Survey is the largest survey carried out by the XMM-Newton satellite and covers a total area of 50 square degrees distributed over two fields. It primarily aims at…
Radio observations of the merging galaxy cluster system Abell 3391-Abell 3395
M. Brüggen, T. H. Reiprich, E. Bulbul +20
The pre-merging system of galaxy clusters Abell 3391-Abell 3395 located at a mean redshift of 0.053 has been observed at 1 GHz in an ASKAP/EMU Early Science observation as well as…
The XMM-LSS catalogue: X-ray sources and associated optical data. Version I
M. Pierre, L. Chiappetti, F. Pacaud +34
Following the presentation of the XMM-LSS X-ray source detection package by Pacaud et al., we provide the source lists for the first 5.5 surveyed square degrees. The catalogues per…
The SRG/eROSITA all-sky survey: View of the Fornax galaxy cluster
T. H. Reiprich, A. Veronica, F. Pacaud +18
The Fornax cluster is one of the closest X-ray-bright galaxy clusters. Previous observations of the intracluster medium were limited to less than R500. We aim to significantly exte…
The eROSITA Final Equatorial-Depth Survey (eFEDS): X-ray properties of Subaru optically-selected clusters
N. Ota, N. T. Nguyen-Dang, I. Mitsuishi +17
We present the results of a systematic X-ray analysis of optically rich galaxy clusters detected by the Subaru HSC survey in the eROSITA eFEDS field. Through a joint analysis of SR…
The XXL Survey: XXVII. The 3XLSS point source catalogue
L. Chiappetti, S. Fotopoulou, C. Lidman +35
We present the version of the point source catalogue of the XXL Survey that was used, in part, in the first series of XXL papers. In this paper we release, in our database in Milan…
The XXL Survey XX: The 365 cluster catalogue
C. Adami, P. Giles, E. Koulouridis +54
In the currently debated context of using clusters of galaxies as cosmological probes, the need for well-defined cluster samples is critical. The XXL Survey has been specifically d…
Constraining the intracluster pressure profile from the thermal SZ power spectrum
M. E. Ramos-Ceja, K. Basu, F. Pacaud +1
The angular power spectrum of the thermal Sunyaev-Zel'dovich (tSZ) effect is highly sensitive to cosmological parameters such as sigma_8 and Omega_m, but its use as a precision cos…
A Chandra view of the z=1.62 galaxy cluster IRC-0218A
M. Pierre, N. Clerc, B. Maughan +3
Context: Very few z > 1.5 clusters of galaxies are known. It is important to study the properties of galaxies in these clusters and the ICM and, further, to cross-check the reliabi…
ViCTORIA project: The LOFAR HBA Virgo Cluster Survey
H. W. Edler, F. de Gasperin, T. W. Shimwell +15
The Virgo cluster is the nearest massive galaxy cluster and thus a prime target to study astrophysical processes in dense large-scale environments. In the radio band, we can probe…
Euclid Quick Data Release (Q1). First detections from the galaxy cluster workflow
Euclid Collaboration, S. Bhargava, C. Benoist +351
The first survey data release by the Euclid mission covers approximately in the Euclid Deep Fields to the same depth as the Euclid Wide Survey. This paper show…
The eROSITA X-ray telescope on SRG
P. Predehl, R. Andritschke, V. Arefiev +90
eROSITA (extended ROentgen Survey with an Imaging Telescope Array) is the primary instrument on the Spectrum-Roentgen-Gamma (SRG) mission, which was successfully launched on July 1…
A Spitzer-Selected Galaxy Cluster at z=1.62
C. Papovich, I. Momcheva, C. N. A. Willmer +15
We report the discovery of a galaxy cluster at z=1.62 located in the Spitzer Wide-Area Infrared Extragalactic survey XMM-LSS field. This structure was selected solely as an overden…
The XMM-LSS catalogue: X-ray sources and associated multiwavelength data. Version II
L. Chiappetti, N. Clerc, F. Pacaud +8
We present the final release of the multi-wavelength XMM-LSS data set,covering the full survey area of 11.1 square degrees, with X-ray data processed with the latest XMM-LSS pipeli…