Concept
Temps cosmique
Publications associées (32)
Molecular gas and star formation activity in luminous infrared galaxies in clusters at intermediate redshifts
Pascale Jablonka, Gianluca Castignani, Mathilde Jauzac, Damien Louis Alexandre Spérone-Longin
We investigate the role of dense megaparsec-scale environments in processing molecular gas of cluster galaxies as they fall into the cluster cores. We selected a sample of similar to 20 luminous infrared galaxies (LIRGs) belonging to intermediate-redshift ...
EDP SCIENCES S A2020Probing the gravitational wave background from cosmic strings with LISA
Cosmic string networks offer one of the best prospects for detection of cosmological gravitational waves (GWs). The combined incoherent GW emission of a large number of string loops leads to a stochastic GW background (SGWB), which encodes the properties o ...
2020Molecular gas in distant brightest cluster galaxies
The mechanisms governing the stellar mass assembly and star formation history of brightest cluster galaxies (BCGs) are still being debated. By means of new and archival molecular gas observations we investigate the role of dense megaparsec-scale environmen ...
2020The GOGREEN survey: the environmental dependence of the star-forming galaxy main sequence at 1.0 < z < 1.5
Pascale Jablonka, Hung-Hsu Chan
We present results on the environmental dependence of the star-forming galaxy main sequence in 11 galaxy cluster fields at 1.0 < z < 1.5 from the Gemini Observations of Galaxies in Rich Early Environments Survey (GOGREEN) survey. We use a homogeneously sel ...
OXFORD UNIV PRESS2020H0LiCOW-V. New COSMOGRAIL time delays of HE 0435-1223: H-0 to 3.8 per cent precision from strong lensing in a flat Lambda CDM model
Frédéric Courbin, Georges Meylan, Malte Tewes, Vivien François Bonvin
We present a new measurement of the Hubble Constant H-0 and other cosmological parameters based on the joint analysis of three multiply imaged quasar systems with measured gravitational time delays. First, we measure the time delay of HE 0435-1223 from 13- ...
Oxford Univ Press2017COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses XV. Assessing the achievability and precision of time-delay measurements
Frédéric Courbin, Georges Meylan, Thibault Adrien Kuntzer, Malte Tewes, Vivien François Bonvin
COSMOGRAIL is a long-term photometric monitoring of gravitationally lensed quasars aimed at implementing Refsdal's time-delay method to measure cosmological parameters, in particular H-0. Given the long and well sampled light curves of strongly lensed quas ...
Edp Sciences S A2016MultiDarkLens Simulations: weak lensing light-cones and data base presentation
Jean-Paul Richard Kneib, Johan Comparat, Huanyuan Shan
In this paper we present a large data base of weak lensing light cones constructed using different snapshots from the Big MultiDark simulation (BigMDPL). The ray-tracing through different multiple plane has been performed with the GLAMER code accounting bo ...
Oxford Univ Press2016The Sdss-Iv Extended Baryon Oscillation Spectroscopic Survey: Overview And Early Data
Jean-Paul Richard Kneib, Zheng Zheng, Cheng Zhao, Johan Comparat, Anand Stéphane Raichoor, David Schlegel, Timothée Guy Olivier Delubac, Yuting Wang, Pierre Laurent, Cheng Li, Yu Liang
In a six-year program started in 2014 July, the Extended Baryon Oscillation Spectroscopic Survey (eBOSS) will conduct novel cosmological observations using the BOSS spectrograph at Apache Point Observatory. These observations will be conducted simultaneous ...
Iop Publishing Ltd2016Completing Lorentz violating massive gravity at high energies
Sergey Sibiryakov, Diego Blas Temino
Theories with massive gravitons are interesting for a variety of physical applications, ranging from cosmological phenomena to holographic modeling of condensed matter systems. To date, they have been formulated as effective field theories with a cutoff pr ...
Springer Verlag2015Strongest model-independent bound on the lifetime of Dark Matter
Julien Lesgourgues, Benjamin Audren
Dark Matter is essential for structured formation in the late Universe so it must be stable on cosmological time scales. But how stable exactly? Only assuming decays into relativistic on particles, we report an otherwise model independent bound on the life ...
Iop Publishing Ltd2014