W
W. J. Couch
Researcher at American Academy of Ophthalmology
Publications - 64
Citations - 20649
W. J. Couch is an academic researcher from American Academy of Ophthalmology. The author has contributed to research in topics: Galaxy & Redshift. The author has an hindex of 29, co-authored 64 publications receiving 19398 citations. Previous affiliations of W. J. Couch include Durham University.
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Journal ArticleDOI
Measurements of Omega and Lambda from 42 High-Redshift Supernovae
Saul Perlmutter,Greg Aldering,G. Goldhaber,R. A. Knop,Peter Nugent,P. G. Castro,Susana E. Deustua,Sebastien Fabbro,A. Goobar,D. E. Groom,I. M. Hook,A. G. Kim,M. Y. Kim,Julia C. Lee,Nelson J. Nunes,Reynald Pain,C. R. Pennypacker,R. M. Quimby,C. Lidman,Richard S. Ellis,Michael G. Irwin,Richard G. McMahon,P. Ruiz-Lapuente,Nicholas A. Walton,Bradley E. Schaefer,B. J. Boyle,Alexei V. Filippenko,Thomas Matheson,A. S. Fruchter,Nino Panagia,Heidi Jo Newberg,W. J. Couch +31 more
TL;DR: In this paper, the mass density, Omega_M, and cosmological-constant energy density of the universe were measured by the analysis of 42 Type Ia supernovae discovered by the Supernova Cosmology Project.
Journal ArticleDOI
The 2dF Galaxy Redshift Survey: Power-spectrum analysis of the final dataset and cosmological implications
Shaun Cole,Will J. Percival,John A. Peacock,Peder Norberg,Carlton M. Baugh,Carlos S. Frenk,Ivan K. Baldry,J. Bland-Hawthorn,T. Bridges,R. D. Cannon,Matthew Colless,Chris A. Collins,W. J. Couch,Nicholas Cross,Gary Dalton,Vince Eke,R. De Propris,Simon P. Driver,George Efstathiou,Richard S. Ellis,Karl Glazebrook,Carole Jackson,Adrian Jenkins,O. Lahav,Ian Lewis,Stuart Lumsden,Steve Maddox,Darren Madgwick,Bruce A. Peterson,William J. Sutherland,Keith Taylor +30 more
TL;DR: In this paper, a power spectrum analysis of the final 2dF Galaxy Redshift Survey is presented, employing a direct Fourier method, and the covariance matrix for the power-spectrum estimates is determined using two different approaches to the construction of mock surveys.
Journal ArticleDOI
Measurements of the Cosmological Parameters Omega and Lambda from the First 7 Supernovae at z >= 0.35
Saul Perlmutter,S. Gabi,G. Goldhaber,D. E. Groom,I. M. Hook,A. G. Kim,M. Y. Kim,Janice C. Lee,C. R. Pennypacker,I. Small,A. Goobar,R. Pain,Richard S. Ellis,R. G. McMahon,B. J. Boyle,P. S. Bunclark,D. Carter,Mike Irwin,Karl Glazebrook,Heidi Jo Newberg,Alexei V. Filippenko,Thomas Matheson,Michael A. Dopita,W. J. Couch +23 more
TL;DR: In this paper, a technique to systematically discover and study high-redshift supernovae that can be used to measure the cosmological parameters has been developed, based on the initial seven of >28 supernova discovered to date in the Supernova Cosmology Project.
Journal ArticleDOI
The 2dF Galaxy Redshift Survey: Luminosity dependence of galaxy clustering
Peder Norberg,Carlton M. Baugh,Ed Hawkins,Steve Maddox,John A. Peacock,Shaun Cole,Carlos S. Frenk,Joss Bland-Hawthorn,T. Bridges,R. D. Cannon,Matthew Colless,Chris A. Collins,W. J. Couch,Gavin Dalton,Simon P. Driver,George Efstathiou,Richard S. Ellis,Karl Glazebrook,Carole Jackson,O. Lahav,Ian Lewis,Stuart Lumsden,Bruce A. Peterson,William J. Sutherland,Keith Taylor +24 more
TL;DR: In this paper, the authors measured the projected two-point correlation function of galaxies in a series of volume-limited samples and found that the clustering amplitude increases slowly with absolute magnitude for galaxies fainter than M*, but rises more strongly at higher luminosities.
Journal ArticleDOI
The 2dF Galaxy Redshift Survey: The b_J-band galaxy luminosity function and survey selection function
Peder Norberg,Shaun Cole,Carlton M. Baugh,Carlos S. Frenk,Ivan K. Baldry,J. Bland-Hawthorn,T. Bridges,R. D. Cannon,Matthew Colless,Chris A. Collins,W. J. Couch,Nicholas C.P. Cross,Gary Dalton,R. De Propris,Simon P. Driver,George Efstathiou,Richard J. Ellis,Karl Glazebrook,Carole Jackson,O. Lahav,Ian Lewis,Stuart Lumsden,Steve Maddox,Darren Madgwick,John A. Peacock,Bruce A. Peterson,William J. Sutherland,Keith Taylor +27 more
TL;DR: In this article, the authors used more than 110500 galaxies from the 2dF galaxy redshift survey (2dFGRS) to estimate the b_J-band galaxy luminosity function at redshift z = 0, taking account of evolution, the distribution of magnitude measurement errors and small corrections for incompleteness in the galaxy catalogue.