K
Karim Benabed
Researcher at Institut d'Astrophysique de Paris
Publications - 78
Citations - 7802
Karim Benabed is an academic researcher from Institut d'Astrophysique de Paris. The author has contributed to research in topics: Weak gravitational lensing & Cosmic microwave background. The author has an hindex of 37, co-authored 78 publications receiving 6624 citations.
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Journal ArticleDOI
Dancing in the dark: galactic properties trace spin swings along the cosmic web
Y. Dubois,C. Pichon,C. Welker,C. Welker,D. Le Borgne,Julien Devriendt,Clotilde Laigle,Sandrine Codis,Dmitry Pogosyan,Stéphane Arnouts,Karim Benabed,E. Bertin,J. Blaizot,François R. Bouchet,Jean-François Cardoso,Stéphane Colombi,V. de Lapparent,Vincent Desjacques,Raphael Gavazzi,Susan A. Kassin,Taysun Kimm,H. J. McCracken,B. Milliard,Sébastien Peirani,Simon Prunet,S. Rouberol,Joseph Silk,Adrianne Slyz,Thierry Sousbie,Romain Teyssier,Laurence Tresse,Marie Treyer,D. Vibert,M. Volonteri +33 more
TL;DR: In this paper, a large-scale hydrodynamical cosmological simulation, Horizon-AGN, is used to investigate the alignment between the spin of galaxies and the largescale cosmic filaments above red-shift one.
Journal ArticleDOI
Conservative Constraints on Early Cosmology: an illustration of the Monte Python cosmological parameter inference code
TL;DR: In this article, Monte Python is used to obtain robust bounds on the effective neutrino number and neutrinos mass, showing no hints for extra relativistic degrees of freedom, and proving in a robust way that neutinos experienced their non-relativistic transition after the time of photon decoupling.
Journal ArticleDOI
Conservative constraints on early cosmology with MONTE PYTHON
Benjamin Audren,Julien Lesgourgues,Julien Lesgourgues,Julien Lesgourgues,Karim Benabed,Simon Prunet +5 more
TL;DR: In this article, Monte-Python was used to obtain conservative bounds on the effective neutrino number and neutrinos mass, showing no hints for extra relativistic degrees of freedom, and proving in a robust way that neutinos experienced their non-relativistic transition after the photon decoupling.
Journal ArticleDOI
CFHTLenS: combined probe cosmological model comparison using 2D weak gravitational lensing
Martin Kilbinger,Liping Fu,Catherine Heymans,Fergus Simpson,J. Benjamin,Thomas Erben,Joachim Harnois-Déraps,Henk Hoekstra,Henk Hoekstra,Hendrik Hildebrandt,Hendrik Hildebrandt,Thomas D. Kitching,Yannick Mellier,Lance Miller,Ludovic Van Waerbeke,Karim Benabed,Christopher Bonnett,Jean Coupon,Michael J. Hudson,Michael J. Hudson,Konrad Kuijken,Barnaby Rowe,Barnaby Rowe,Tim Schrabback,Tim Schrabback,Tim Schrabback,E. Semboloni,Sanaz Vafaei,Malin Velander,Malin Velander +29 more
TL;DR: In this paper, the cosmological constraints from 2D weak gravitational lensing by the large-scale structure in the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS) are presented.
Journal ArticleDOI
Evidence for the accelerated expansion of the Universe from weak lensing tomography with COSMOS
Tim Schrabback,Jan Hartlap,Benjamin Joachimi,Martin Kilbinger,Patrick Simon,Karim Benabed,Marusa Bradac,Tim Eifler,Thomas Erben,Christopher D. Fassnacht,F. William High,Stefan Hilbert,Hendrik Hildebrandt,Henk Hoekstra,Konrad Kuijken,Phil Marshall,Yannick Mellier,Eric Morganson,Peter Schneider,Elisabetta Semboloni,Ludovic Van Waerbeke,Malin Velander +21 more
TL;DR: In this article, a tomographic cosmological weak lensing analysis of the HST COSMOS Survey is presented, which is consistent with pure gravitational modes and no significant shape systematics.