A
Ami Choi
Researcher at Ohio State University
Publications - 114
Citations - 8889
Ami Choi is an academic researcher from Ohio State University. The author has contributed to research in topics: Weak gravitational lensing & Galaxy. The author has an hindex of 37, co-authored 90 publications receiving 6846 citations. Previous affiliations of Ami Choi include University of Edinburgh & University College London.
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Journal ArticleDOI
Dark Energy Survey year 1 results: Cosmological constraints from galaxy clustering and weak lensing
T. M. C. Abbott,Filipe B. Abdalla,A. Alarcon,Jelena Aleksić,S. Allam,Steven W. Allen,A. Amara,J. Annis,Jacobo Asorey,Santiago Avila,David Bacon,Eduardo Balbinot,Manda Banerji,Nilanjan Banik,Wayne A. Barkhouse,M. Baumer,Eric J. Baxter,Keith Bechtol,Matthew R. Becker,A. Benoit-Lévy,Bradford Benson,Gary Bernstein,E. Bertin,Jonathan Blazek,Sarah Bridle,David J. Brooks,D. Brout,E. Buckley-Geer,D. L. Burke,M. T. Busha,Antonio Campos,Diego Capozzi,A. Carnero Rosell,M. Carrasco Kind,J. Carretero,F. J. Castander,R. Cawthon,Chihway Chang,N. Chen,M. J. Childress,Ami Choi,Christopher J. Conselice,Robert Crittenden,Martin Crocce,Carlos E. Cunha,C. B. D'Andrea,L. N. da Costa,R. Das,Tamara M. Davis,C. L. Davis,J. De Vicente,Darren L. DePoy,J. DeRose,Shantanu Desai,H. T. Diehl,J. P. Dietrich,Scott Dodelson,P. Doel,Alex Drlica-Wagner,Tim Eifler,Ann Elliott,F. Elsner,Jack Elvin-Poole,Juan Estrada,August E. Evrard,Yongqi Fang,Enrique J. Fernández,Agnès Ferté,D. A. Finley,B. Flaugher,Pablo Fosalba,Oliver Friedrich,Joshua A. Frieman,Juan Garcia-Bellido,M. Garcia-Fernandez,M. Gatti,Enrique Gaztanaga,D. W. Gerdes,Tommaso Giannantonio,M. S. S. Gill,Karl Glazebrook,Daniel A. Goldstein,Daniel Gruen,Robert A. Gruendl,J. Gschwend,G. Gutierrez,S. Hamilton,W. G. Hartley,Samuel Hinton,K. Honscheid,Ben Hoyle,Dragan Huterer,Bhuvnesh Jain,David J. James,Matt J. Jarvis,Tesla E. Jeltema,Michael D. Johnson,Marvin Johnson,T. Kacprzak,Steve Kent,A. G. Kim,Andrew J. King,D. Kirk,N. Kokron,András Kovács,Elisabeth Krause,C. Krawiec,A. Kremin,Kyler Kuehn,S. E. Kuhlmann,N. Kuropatkin,F. Lacasa,Ofer Lahav,Tianjun Li,Andrew R. Liddle,C. Lidman,Marcos Lima,Huan Lin,Niall MacCrann,Marcio A. G. Maia,Martin Makler,M. Manera,M. March,Jennifer L. Marshall,Paul Martini,Richard G. McMahon,Peter Melchior,Felipe Menanteau,Ramon Miquel,V. Miranda,D. Mudd,J. Muir,Anais Möller,Eric H. Neilsen,Robert C. Nichol,Brian Nord,Peter Nugent,Ricardo L. C. Ogando,Antonella Palmese,John A. Peacock,Hiranya V. Peiris,John Peoples,Will J. Percival,Don Petravick,A. A. Plazas,A. Porredon,J. Prat,A. Pujol,Markus Rau,Alexandre Refregier,Paul M. Ricker,Natalie A. Roe,R. P. Rollins,A. K. Romer,A. Roodman,Rogerio Rosenfeld,A. J. Ross,E. Rozo,E. S. Rykoff,Masao Sako,Ana Salvador,S. Samuroff,Carles Sanchez,E. J. Sanchez,Basilio X. Santiago,V. Scarpine,R. H. Schindler,Daniel Scolnic,L. F. Secco,S. Serrano,I. Sevilla-Noarbe,Erin Sheldon,R. C. Smith,M. N. K. Smith,J. G. Smith,Marcelle Soares-Santos,Flavia Sobreira,E. Suchyta,Gregory Tarle,Daniel B. Thomas,Michael Troxel,Douglas L. Tucker,Brad E. Tucker,S. A. Uddin,T. N. Varga,P. Vielzeuf,Vinu Vikram,A. K. Vivas,Alistair R. Walker,M. H.L.S. Wang,Risa H. Wechsler,Jochen Weller,W. C. Wester,R. C. Wolf,Brian Yanny,Fang Yuan,Alfredo Zenteno,Bonnie Zhang,Yanxi Zhang,Joe Zuntz +199 more
TL;DR: In this paper, the cosmological results from a combined analysis of galaxy clustering and weak gravitational lensing, using 1321 deg2 of griz imaging data from the first year of the Dark Energy Survey (DES Y1), were presented.
Journal ArticleDOI
KiDS-450: cosmological parameter constraints from tomographic weak gravitational lensing
Hendrik Hildebrandt,Massimo Viola,Catherine Heymans,Shahab Joudaki,Konrad Kuijken,Chris Blake,Thomas Erben,Benjamin Joachimi,Dominik Klaes,Lance Miller,Carole Morrison,R. Nakajima,G. A. Verdoes Kleijn,Alexandra Amon,Ami Choi,Giovanni Covone,J. T. A. de Jong,Andrej Dvornik,I. Fenech Conti,Aniello Grado,Joachim Harnois-Déraps,Joachim Harnois-Déraps,Ricardo Herbonnet,Henk Hoekstra,Fabian Köhlinger,John McFarland,Alexander Mead,Julian Merten,Nicola R. Napolitano,John A. Peacock,Mario Radovich,Petra Schneider,Patrick Simon,Edwin A. Valentijn,J. L. van den Busch,E. van Uitert,L. van Waerbeke +36 more
TL;DR: In this article, the authors present cosmological parameter constraints from a tomographic weak gravitational lensing analysis of ~450deg$^2$ of imaging data from the Kilo Degree Survey (KiDS) for a flat Lambda$CDM cosmology with a prior on $H_0$ that encompasses the most recent direct measurements.
Journal ArticleDOI
Dark Energy Survey Year 1 results: cosmological constraints from cosmic shear
Michael Troxel,N. MacCrann,N. MacCrann,Joe Zuntz,Tim Eifler,Elisabeth Krause,Scott Dodelson,Daniel Gruen,Jonathan Blazek,Oliver Friedrich,S. Samuroff,J. Prat,L. F. Secco,C. L. Davis,Agnès Ferté,J. DeRose,A. Alarcon,Adam Amara,Eric J. Baxter,Matthew R. Becker,Gary Bernstein,Sarah Bridle,R. Cawthon,Chihway Chang,Ami Choi,J. De Vicente,Alex Drlica-Wagner,Jack Elvin-Poole,Joshua A. Frieman,M. Gatti,W. G. Hartley,K. Honscheid,Ben Hoyle,E. M. Huff,Dragan Huterer,Bhuvnesh Jain,Matt J. Jarvis,T. Kacprzak,D. Kirk,N. Kokron,C. Krawiec,O. Lahav,Andrew R. Liddle,John A. Peacock,Markus Rau,Alexandre Refregier,R. P. Rollins,E. Rozo,E. S. Rykoff,Carles Sanchez,I. Sevilla-Noarbe,Erin Sheldon,Albert Stebbins,T. N. Varga,P. Vielzeuf,M. H.L.S. Wang,Risa H. Wechsler,B. Yanny,T. M. C. Abbott,Filipe B. Abdalla,S. Allam,J. Annis,Keith Bechtol,A. Benoit-Lévy,E. Bertin,David J. Brooks,E. Buckley-Geer,D. L. Burke,A. Carnero Rosell,M. Carrasco Kind,J. Carretero,F. J. Castander,Martin Crocce,Carlos E. Cunha,C. B. D'Andrea,C. B. D'Andrea,L. N. da Costa,Darren L. DePoy,Shantanu Desai,H. T. Diehl,J. P. Dietrich,P. Doel,Enrique J. Fernández,B. Flaugher,Pablo Fosalba,Juan Garcia-Bellido,Enrique Gaztanaga,D. W. Gerdes,Tommaso Giannantonio,Daniel A. Goldstein,Robert A. Gruendl,J. Gschwend,G. Gutierrez,David J. James,Tesla E. Jeltema,Marvin Johnson,Michael D. Johnson,Steve Kent,Kyler Kuehn,S. E. Kuhlmann,N. Kuropatkin,Tianjun Li,Marcos Lima,Huan Lin,Marcio A. G. Maia,M. March,Jennifer L. Marshall,Paul Martini,Peter Melchior,Felipe Menanteau,Ramon Miquel,Joseph J. Mohr,Eric H. Neilsen,Robert C. Nichol,Brian Nord,Don Petravick,A. A. Plazas,A. K. Romer,A. Roodman,Masao Sako,E. J. Sanchez,V. Scarpine,R. H. Schindler,Michael Schubnell,Mathew Smith,R. C. Smith,Marcelle Soares-Santos,Flavia Sobreira,E. Suchyta,M. E. C. Swanson,G. Tarle,Daniel Thomas,Douglas L. Tucker,Vinu Vikram,Alistair R. Walker,Jochen Weller,Yanxi Zhang +136 more
TL;DR: In this paper, a 3.5% fractional uncertainty on σ8(Ωm/0.3)0.5 = 0.782-0.33 at 68% C.L.
Journal ArticleDOI
Gravitational lensing analysis of the Kilo-Degree Survey
Konrad Kuijken,Catherine Heymans,Hendrik Hildebrandt,R. Nakajima,Thomas Erben,Jelte T. A. de Jong,Massimo Viola,Ami Choi,Henk Hoekstra,Lance Miller,Edo van Uitert,Edo van Uitert,Alexandra Amon,Chris Blake,Margot M. Brouwer,Axel Buddendiek,Ian Fenech Conti,Martin Eriksen,Aniello Grado,Joachim Harnois-Déraps,E. Helmich,Ricardo Herbonnet,N. Irisarri,Thomas D. Kitching,Dominik Klaes,Francesco La Barbera,Nicola R. Napolitano,Mario Radovich,Peter Schneider,Cristóbal Sifón,Gert Sikkema,Patrick Simon,A. Tudorica,Edwin A. Valentijn,Gijs Verdoes Kleijn,Ludovic Van Waerbeke +35 more
TL;DR: The Kilo-Degree Survey (KiDS) as mentioned in this paper is a multi-band imaging survey designed for cosmological studies from weak lensing and photometric redshifts.
Journal ArticleDOI
KiDS+VIKING-450: Cosmic shear tomography with optical and infrared data
Hendrik Hildebrandt,Hendrik Hildebrandt,F. Köhlinger,J. L. van den Busch,J. L. van den Busch,Benjamin Joachimi,Catherine Heymans,Arun Kannawadi,A. H. Wright,A. H. Wright,Marika Asgari,Chris Blake,Henk Hoekstra,Shahab Joudaki,Konrad Kuijken,Lance Miller,Christopher B. Morrison,Tilman Tröster,Alexandra Amon,Maria Archidiacono,S. Brieden,S. Brieden,Ami Choi,J. T. A. de Jong,Thomas Erben,Benjamin Giblin,Alexander Mead,John A. Peacock,Mario Radovich,Peter Schneider,Cristóbal Sifón,Cristóbal Sifón,M. Tewes +32 more
TL;DR: In this article, a tomographic cosmic shear analysis of the Kilo-Degree Survey (KiDS) combined with the VISTA Kilo Degree Infrared Galaxy Survey is presented.