English
Related papers

Related papers: BAX: A dedicated X-Rays galaxy clusters Database

200 papers

(Abridged) Context. This is the second paper of a series devoted to the WIde Field Nearby Galaxy-cluster Survey (WINGS). WINGS is a long term project which is gathering wide-field, multi-band imaging and spectroscopy of galaxies in a…

Cosmology and Nongalactic Astrophysics · Physics 2009-11-13 J. Varela , M. D'Onofrio , C. Marmo , G. Fasano , D. Bettoni , A. Cava , W. J. Couch , A. Dressler , P. Kjaergaard , M. Moles , E. Pignatelli , B. M. Poggianti , T. Valentinuzzi

We use a cluster sample selected independently of the intracluster medium content with reliable masses to measure the mean gas mass fraction and its scatter, the biases of the X-ray selection on gas mass fraction, and the covariance between…

Cosmology and Nongalactic Astrophysics · Physics 2017-10-04 S. Andreon , J. Wang , G. Trinchieri , A. Moretti , A. L. Serra

A combined BATSE-GBM hard X-ray catalog is presented based on Earth Occultation Imaging applied to a reanalysis of BATSE data. An imaging approach has been developed for the reanalysis of Earth Occultation analysis of BATSE data. The…

High Energy Astrophysical Phenomena · Physics 2013-03-12 Yuan Zhang , Michael Cherry , Gary Case , James Ling , William Wheaton

Galaxy clusters appear as extended sources in XMM-Newton images, but not all extended sources are clusters. So, their proper classification requires visual inspection with optical images, which is a slow process with biases that are almost…

The development of successful artificial intelligence models for chest X-ray analysis relies on large, diverse datasets with high-quality annotations. While several databases of chest X-ray images have been released, most include disease…

Image and Video Processing · Electrical Eng. & Systems 2024-05-21 Nicolás Gaggion , Candelaria Mosquera , Lucas Mansilla , Julia Mariel Saidman , Martina Aineseder , Diego H. Milone , Enzo Ferrante

Star-forming regions have been the targets of X-ray observations since the dawn of satellite X-ray astronomy. The increase in sensitivity and/or spatial resolution offered by XMM-Newton and Chandra allows a dramatic improvement, both…

Astrophysics · Physics 2007-05-23 T. Montmerle , N. Grosso , E. D. Feigelson , L. Townsley

[Abridged] We study the X-ray properties of a color-selected sample of clusters at 0.1<z<0.3, to quantify the real aboundance of the population of X-ray dark or underluminous clusters and at the same time the spurious detection…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 S. Andreon , A. Moretti

Despite compelling theoretical arguments, the use of clusters as cosmological probes is, in practice, frequently questioned because of the many uncertainties impinging on cluster mass estimates. Our aim is to develop a fully self-consistent…

Cosmology and Nongalactic Astrophysics · Physics 2017-11-29 M. Pierre , A. Valotti , L. Faccioli , N. Clerc , R. Gastaud , E. Koulouridis , F. Pacaud

We present the work of an international team at the International Space Science Institute (ISSI) in Bern that worked together to review the current observational and theoretical status of the non-virialised X-ray emission components in…

We study the distribution of X-ray selected clusters of galaxies with respect to superclusters determined by Abell clusters of galaxies and show that the distribution of X-ray clusters follows the supercluster-void network determined by…

Astrophysics · Physics 2009-10-31 M. Einasto , J. Einasto , E. Tago , V. M"uller , H. Andernach

Be/X-ray binaries are the most numerous class of X-ray binaries. They constitute an excellent tracer of star formation and can be used to study several aspects of astrophysics, from mass loss in massive stars to binary evolution. This short…

Astrophysics · Physics 2009-03-24 Ignacio Negueruela

Considerable progress has been made over the last decade in the study of the evolutionary trends of the population of galaxy clusters in the Universe. In this review we focus on observations in the X-ray band. X-ray surveys with the ROSAT…

Astrophysics · Physics 2008-11-26 Piero Rosati , Stefano Borgani , Colin Norman

The CFHTLS presents a unique data set for weak lensing studies, having high quality imaging and deep multi-band photometry. We have initiated an XMM-CFHTLS project to provide X-ray observations of the brightest X-ray selected clusters…

The selection of clusters of galaxies through their X-ray emission has proved to be an extremely powerful technique over the past four decades. The growth of X-ray astronomy has provided the community with a steadily more detailed view of…

Astrophysics · Physics 2007-05-23 Alastair C. Edge

Today's sensistive, high resolution Chandra X-ray observations allow the study of many populations of X-ray sources. The traditional astronomical tools of photometric diagrams and luminosity functions are now applied to these populations,…

Astrophysics · Physics 2009-11-11 G. Fabbiano

We discuss the central role played by the X-ray study of hot baryons within galaxy clusters to reconstruct the assembly of cosmic structures and to trace the past history of star formation and accretion onto supermassive Black Holes (BHs).…

The abundance and internal characteristics of rich clusters of galaxies can provide useful constraints on models of large--scale structure formation. This article will review some recent three dimensional, multi--fluid simulations of…

Astrophysics · Physics 2007-05-23 August E. Evrard

We have simulated the evolution of a large sample of X-ray clusters in a Lambda-CDM universe at high spatial resolution using adaptive mesh refinement and placed the results in an online archive for public access. The Simulated Cluster…

The MATLAS project explores the surroundings of a complete sample of nearby massive early-type galaxies with multi-colour deep optical images obtained at the Canada-France Hawaii Telescope. The observing and data reduction techniques…

Astrophysics of Galaxies · Physics 2020-07-29 Pierre-Alain Duc

We review the latest developments in our X-ray observational and theoretical understanding of the outskirts of galaxy clusters, and their connection to the cosmic web. The faint cluster outskirts are challenging regions to observe in…

Cosmology and Nongalactic Astrophysics · Physics 2023-04-05 Stephen Walker , Erwin Lau