Publications de Céline Tchernin

The BUFFALO HST Survey

Jean-Paul Richard Kneib, Pascale Jablonka, David Richard Harvey, Benjamin Yvan Alexandre Clement, Mathilde Jauzac, Huanyuan Shan, Hakim Atek, Anja Von der Linden, Matthieu Schaller, Céline Tchernin

The Beyond Ultra-deep Frontier Fields and Legacy Observations (BUFFALO) is a 101 orbit + 101 parallel Cycle 25 Hubble Space Telescope (HST) Treasury program taking data from 2018 to 2020. BUFFALO will expand existing coverage of the Hubble Frontier Fields ...

IOP PUBLISHING LTD2020

The extraordinary amount of substructure in the Hubble Frontier Fields cluster Abell 2744

Jean-Paul Richard Kneib, David Richard Harvey, Huanyuan Shan, Benjamin Yvan Alexandre Clement, Hakim Atek, Mathilde Jauzac, Markus Rexroth, Céline Tchernin, Richard Massey, Johan Richard

We present a joint optical/X-ray analysis of the massive galaxy cluster Abell 2744 (z = 0.308). Our strong- and weak-lensing analysis within the central region of the cluster, i.e. at R < 1 Mpc from the brightest cluster galaxy, reveals eight substructures ...

Oxford Univ Press2016

A shock front at the radio relic of Abell 2744

Jean-Paul Richard Kneib, Mathilde Jauzac, Céline Tchernin

Radio relics are Mpc-scale diffuse radio sources at the peripheries of galaxy clusters which are thought to trace outgoing merger shocks. We present XMM-Newton and Suzaku observations of the galaxy cluster Abell 2744 (z = 0.306), which reveal the presence ...

Oxford Univ Press2016

Warm-hot baryons comprise 5-10 per cent of filaments in the cosmic web

Jean-Paul Richard Kneib, Huanyuan Shan, Mathilde Jauzac, Céline Tchernin, Richard Massey, Johan Richard

Observations of the cosmic microwave background indicate that baryons account for 5 per cent of the Universe's total energy content(1). In the local Universe, the census of all observed baryons falls short of this estimate by a factor of two(2,3). Cosmolog ...

Nature Publishing Group2015

Design concepts for the Cherenkov Telescope Array CTA: an advanced facility for ground-based high-energy gamma-ray astronomy

Mathieu Ribordy, Steve Couturier, Christophe Bauer, Thomas Günther Bretz, Francisco Sanchez, Etienne Antoine Julien Moulin, Pablo Roberto Ristori, Bruno Garcia, Céline Tchernin

Ground-based gamma-ray astronomy has had a major breakthrough with the impressive results obtained using systems of imaging atmospheric Cherenkov telescopes. Ground-based gamma-ray astronomy has a huge potential in astrophysics, particle physics and cosmol ...

2011