P
Pierre Astier
Researcher at Pierre-and-Marie-Curie University
Publications - 106
Citations - 20181
Pierre Astier is an academic researcher from Pierre-and-Marie-Curie University. The author has contributed to research in topics: Supernova & Supernova Legacy Survey. The author has an hindex of 49, co-authored 105 publications receiving 18819 citations. Previous affiliations of Pierre Astier include Centre national de la recherche scientifique.
Papers
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Journal ArticleDOI
The Supernova Legacy Survey: Measurement of Omega_M, Omega_Lambda,and w from the First Year Data Set
Pierre Astier,Julien Guy,Nicolas Regnault,Reynald Pain,Éric Aubourg,David D. Balam,S. Basa,Raymond G. Carlberg,Sebastien Fabbro,Dominique Fouchez,I. M. Hook,D. A. Howell,H. Lafoux,James D. Neill,Nathalie Palanque-Delabrouille,K. Perrett,Christopher J. Pritchet,J. Rich,Mark Sullivan,Richard Taillet,Greg Aldering,P. Antilogus,V. Arsenijevic,Christophe Balland,S. Baumont,J. Bronder,Hélène M. Courtois,Rowan Ellis,M. Filiol,A. C. Gonçalves,Ariel Goobar,D. Guide,D. Hardin,V. Lusset,C. Lidman,Richard G. McMahon,M. Mouchet,A. Mourao,Saul Perlmutter,Saul Perlmutter,P. Ripoche,Charling Tao,Nicholas A. Walton +42 more
TL;DR: In this article, distance measurements to 71 high redshift type Ia supernovae discovered during the first year of the 5-year Supernova Legacy Survey (SNLS) were presented.
Journal ArticleDOI
Improved cosmological constraints from a joint analysis of the SDSS-II and SNLS supernova samples
Marc Betoule,Richard Kessler,Julien Guy,Julien Guy,J. Mosher,D. Hardin,Rahul Biswas,Pierre Astier,P. El-Hage,M. Konig,Steve Kuhlmann,John Marriner,Reynald Pain,Nicolas Regnault,Christophe Balland,Bruce A. Bassett,Bruce A. Bassett,Peter J. Brown,Heather Campbell,Heather Campbell,Raymond G. Carlberg,F. Cellier-Holzem,D. Cinabro,A. Conley,C. B. D'Andrea,Darren L. DePoy,M. Doi,Richard S. Ellis,Sebastien Fabbro,Alexei V. Filippenko,Ryan J. Foley,Joshua A. Frieman,Joshua A. Frieman,Dominique Fouchez,Lluís Galbany,Lluís Galbany,Ariel Goobar,Ravi R. Gupta,Ravi R. Gupta,Gary J. Hill,Renée Hlozek,Craig J. Hogan,Craig J. Hogan,Isobel Hook,Dale Andrew Howell,Dale Andrew Howell,Saurabh Jha,L. Le Guillou,Giorgos Leloudas,Giorgos Leloudas,C. Lidman,Jennifer L. Marshall,Anais Möller,A. Mourao,J. Neveu,Robert C. Nichol,Matthew D. Olmstead,Nathalie Palanque-Delabrouille,Saul Perlmutter,J. L. Prieto,Christopher J. Pritchet,Michael Richmond,Adam G. Riess,Adam G. Riess,V. Ruhlmann-Kleider,Masao Sako,K. Schahmaneche,D. P. Schneider,M. R. Smith,Jesper Sollerman,Mark Sullivan,Nicholas A. Walton,C. Wheeler +72 more
TL;DR: In this article, the authors presented cosmological constraints from a joint analysis of type Ia supernova (SN Ia) observations obtained by the SDSS-II and SNLS collaborations.
Journal ArticleDOI
New Constraints on ΩM, ΩΛ, and w from an Independent Set of 11 High-Redshift Supernovae Observed with the Hubble Space Telescope*
R. A. Knop,R. A. Knop,Greg Aldering,Greg Aldering,Rahman Amanullah,Pierre Astier,G. Blanc,G. Blanc,M. S. Burns,A. Conley,A. Conley,Susana E. Deustua,Susana E. Deustua,Mamoru Doi,Richard S. Ellis,Sebastien Fabbro,Sebastien Fabbro,Gastón Folatelli,A. S. Fruchter,G. Garavini,S. Garmond,S. Garmond,K. Garton,R. Gibbons,Gerson Goldhaber,Gerson Goldhaber,Ariel Goobar,Donald E. Groom,Donald E. Groom,D. Hardin,I. M. Hook,Dale Andrew Howell,A. G. Kim,A. G. Kim,Brian C. Lee,Christopher Lidman,Javier Méndez,S. Nobili,Peter Nugent,Peter Nugent,Reynald Pain,Nino Panagia,C. R. Pennypacker,Saul Perlmutter,Robert Quimby,J. Raux,N. Regnault,N. Regnault,Pilar Ruiz-Lapuente,G. Sainton,Bradley E. Schaefer,K. Schahmaneche,E. Smith,A. L. Spadafora,Vallery Stanishev,Mark Sullivan,Mark Sullivan,Nicholas A. Walton,Lifan Wang,W. M. Wood-Vasey,W. M. Wood-Vasey,Naoki Yasuda +61 more
TL;DR: In this paper, a set of high-redshift supernovae were used to confirm previous supernova evidence for an accelerating universe, and the supernova results were combined with independent flat-universe measurements of the mass density from CMB and galaxy redshift distortion data, they provided a measurement of $w=-1.05^{+0.15}-0.09$ if w is assumed to be constant in time.
Journal ArticleDOI
SPECTRA AND HUBBLE SPACE TELESCOPE LIGHT CURVES OF SIX TYPE Ia SUPERNOVAE AT 0.511 <z< 1.12 AND THE UNION2 COMPILATION ∗
Rahman Amanullah,Chris Lidman,David Rubin,David Rubin,Greg Aldering,Pierre Astier,Kyle Barbary,Kyle Barbary,M. S. Burns,A. Conley,Kyle S. Dawson,S. E. Deustua,Mamoru Doi,Sebastien Fabbro,L. Faccioli,L. Faccioli,H. K. Fakhouri,H. K. Fakhouri,Gastón Folatelli,A. S. Fruchter,Hisanori Furusawa,G. Garavini,G. Goldhaber,G. Goldhaber,Ariel Goobar,Donald E. Groom,I. M. Hook,I. M. Hook,D. A. Howell,D. A. Howell,Nobunari Kashikawa,A. G. Kim,R. A. Knop,M. Kowalski,Eric V. Linder,J. Meyers,J. Meyers,Tomoki Morokuma,S. Nobili,J. Nordin,Peter Nugent,Linda Ostman,Reynald Pain,Nino Panagia,Nino Panagia,Saul Perlmutter,Saul Perlmutter,J. Raux,Pilar Ruiz-Lapuente,A. L. Spadafora,M. Strovink,M. Strovink,Nao Suzuki,Lifan Wang,W. M. Wood-Vasey,Naoki Yasuda +55 more
TL;DR: Kowalski et al. as mentioned in this paper reported on work to increase the number of well-measured Type Ia supernovae (SNe Ia) at high redshifts.
Posted Content
Euclid Definition Study Report
René J. Laureijs,Jérôme Amiaux,S. Arduini,J.-L. Auguères,Jarle Brinchmann,R. Cole,Mark Cropper,Christophe Dabin,Ludovic Duvet,Anne Ealet,Bianca Garilli,Philippe Gondoin,Luigi Guzzo,J. Hoar,Henk Hoekstra,Rory Holmes,Thomas D. Kitching,T. Maciaszek,Yannick Mellier,F. Pasian,Will J. Percival,Jason Rhodes,G. Saavedra Criado,Marc Sauvage,Roberto Scaramella,Luca Valenziano,Stephen J. Warren,Ralf Bender,Francisco J. Castander,Alessandro Cimatti,O. Le Fèvre,Hannu Kurki-Suonio,Michael Levi,P. B. Lilje,Georges Meylan,Robert C. Nichol,Kristian Pedersen,V. Popa,R. Rebolo Lopez,Hans-Walter Rix,H. J. A. Röttgering,Werner W. Zeilinger,Frank Grupp,P. Hudelot,Richard Massey,Massimo Meneghetti,Lance Miller,Stéphane Paltani,Stephane Paulin-Henriksson,Sandrine Pires,Curtis J. Saxton,Tim Schrabback,Gregor Seidel,Jeremy R. Walsh,Nabila Aghanim,Luca Amendola,James G. Bartlett,Carlo Baccigalupi,J.-P. Beaulieu,K. Benabed,Jean-Gabriel Cuby,David Elbaz,Pablo Fosalba,Giuseppe Gavazzi,Amina Helmi,I. M. Hook,Michael G. Irwin,Jean-Paul Kneib,Martin Kunz,Filippo Mannucci,Lauro Moscardini,Charling Tao,Romain Teyssier,Jochen Weller,G. Zamorani,M. R. Zapatero Osorio,Olivier Boulade,J. J. Foumond,A. Di Giorgio,P. Guttridge,A. James,A. James,M. Kemp,J. Martignac,A. P. Spencer,D. Walton,T. Blümchen,Carlotta Bonoli,Favio Bortoletto,C. Cerna,Leonardo Corcione,Christophe Fabron,Knud Jahnke,Sebastiano Ligori,F. Madrid,Laurent Martin,Gianluca Morgante,Tony Pamplona,Eric Prieto,Marco Riva,R. Toledo,M. Trifoglio,Filippo Maria Zerbi,F. B. Abdalla,Marian Douspis,C. Grenet,Stefano Borgani,R. J. Bouwens,Frederic Courbin,J.-M. Delouis,Pierre Dubath,Adriano Fontana,M. Frailis,Andrea Grazian,J. Koppenhöfer,O. Mansutti,M. Melchior,M. Mignoli,Joseph J. Mohr,C. Neissner,K. Noddle,M. Poncet,Marco Scodeggio,Santiago Serrano,Neville Shane,Jean-Luc Starck,Christian Surace,Andy Taylor,G. Verdoes-Kleijn,Claudio Vuerli,O. R. Williams,Andrea Zacchei,Bruno Altieri,I. Escudero Sanz,R. Kohley,T. Oosterbroek,Pierre Astier,D. J. Bacon,S. Bardelli,Carlton M. Baugh,F. Bellagamba,C. Benoist,Davide Bianchi,Andrea Biviano,E. Branchini,Carmelita Carbone,Vincenzo F. Cardone,Dylan N. Clements,Stephane Colombi,Christopher J. Conselice,Giovanni Cresci,Niall R. Deacon,James Dunlop,Cosimo Fedeli,F. Fontanot,P. Franzetti,Carlo Giocoli,Juan Garcia-Bellido,Jason Gow,Alan Heavens,P. Hewett,Catherine Heymans,Andrew D. Holland,Zhuoyi Huang,Olivier Ilbert,Benjamin Joachimi,E. Jennins,Eamonn Kerins,Alina Kiessling,Donnacha Kirk,Rubina Kotak,Oliver Krause,Ofer Lahav,F. van Leeuwen,Julien Lesgourgues,Marco Lombardi,Manuela Magliocchetti,Kate Maguire,Elisabetta Majerotto,R. Maoli,Federico Marulli,Sophie Maurogordato,H. J. McCracken,Ross J. McLure,Alessandro Melchiorri,Alex Merson,Michele Moresco,Mario Nonino,Peder Norberg,John A. Peacock,R. Pello,Matthew T. Penny,Valeria Pettorino,C. Di Porto,Lucia Pozzetti,Claudia Quercellini,Mario Radovich,Anais Rassat,Nicolas J.-H. Roche,Samuel Ronayette,Emanuel Rossetti,Barbara Sartoris,Barbara Sartoris,Peter Schneider,Elisabetta Semboloni,Stephen Serjeant,Fergus Simpson,Constantinos Skordis,G. Smadja,Stephen J. Smartt,P. Spano,S. Spiro,Mark Sullivan,Andre Tilquin,Roberto Trotta,Licia Verde,Y. Wang,G. Williger,G. Zhao,Julien Zoubian,E. Zucca +220 more
TL;DR: Euclid as mentioned in this paper is a space-based survey mission from the European Space Agency designed to understand the origin of the universe's accelerating expansion, using cosmological probes to investigate the nature of dark energy, dark matter and gravity by tracking their observational signatures.