R
R. Gibbons
Researcher at Lawrence Berkeley National Laboratory
Publications - 14
Citations - 2157
R. Gibbons is an academic researcher from Lawrence Berkeley National Laboratory. The author has contributed to research in topics: Supernova & Redshift. The author has an hindex of 10, co-authored 14 publications receiving 2095 citations.
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Journal ArticleDOI
New Constraints on $\Omega_M$, $\Omega_\Lambda$, and w from an Independent Set of Eleven High-Redshift Supernovae Observed with HST
R. A. Knop,Greg Aldering,Rahman Amanullah,Pierre Astier,Guillermo A. Blanc,M. S. Burns,Alex Conley,Susana E. Deustua,Masao Doi,Richard Ellis,Sebastien Fabbro,G. Folatelli,A. S. Fruchter,G. Garavini,S. Garmond,K. Garton,R. Gibbons,G. Goldhaber,A. Goobar,D. E. Groom,D. Hardin,I. M. Hook,D. A. Howell,A. G. Kim,Brian C. Lee,C. Lidman,Javier Méndez,S. Nobili,Peter Nugent,R. Pain,Nino Panagia,C. R. Pennypacker,Saul Perlmutter,R. M. Quimby,J. Raux,Nicolas Regnault,P. Ruiz-Lapuente,G. Sainton,B. E. Schaefer,K. Schahmaneche,Eric P. Smith,A. L. Spadafora,Vallery Stanishev,Mark Sullivan,N. A. Walton,Lingyu Wang,W. M. Wood-Vasey,Naoki Yasuda +47 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
Spectroscopic observations and analysis of the peculiar SN 1999aa
G. Garavini,Gastón Folatelli,Ariel Goobar,S. Nobili,Greg Aldering,Greg Aldering,Alexis Amadon,Rahman Amanullah,Pierre Astier,Christophe Balland,Christophe Balland,G. Blanc,G. Blanc,M. S. Burns,A. Conley,A. Conley,A. Conley,Tomas Dahlen,Susana E. Deustua,Susana E. Deustua,Richard S. Ellis,Sebastien Fabbro,Xiaohui Fan,Brenda Frye,E. L. Gates,R. Gibbons,Gerson Goldhaber,Gerson Goldhaber,Bertrand Goldman,Donald E. Groom,J. Haissinski,D. Hardin,I. M. Hook,Dale Andrew Howell,Daniel Kasen,Steve Kent,Alex G. Kim,R. A. Knop,Brian C. Lee,Christopher Lidman,Javier Méndez,G. J. Miller,G. J. Miller,M. Moniez,A. Mourao,Heidi Jo Newberg,Peter Nugent,Reynald Pain,O. Perdereau,Saul Perlmutter,V. Prasad,Robert Quimby,J. Raux,N. Regnault,Jeffrey A. Rich,Gordon T. Richards,Pilar Ruiz-Lapuente,G. Sainton,Bradley E. Schaefer,K. Schahmaneche,E. Smith,A. L. Spadafora,Vallery Stanishev,Nicholas A. Walton,L. Wang,W. M. Wood-Vasey,W. M. Wood-Vasey +66 more
TL;DR: In this paper, an extensive time series of spectroscopic data of the peculiar SN 1999aa in NGC 2595 is presented, including 25 optical spectra between -11 and +58 days with respect to B-band maximum light, providing an unusually complete time history.
Journal ArticleDOI
Spectroscopic Observations and Analysis of the Peculiar SN 1999aa
G. Garavini,Gastón Folatelli,A. Goobar,S. Nobili,Greg Aldering,Alexis Amadon,Rahman Amanullah,Pierre Astier,C. Balland,Guillermo A. Blanc,M. S. Burns,Alex Conley,Tomas Dahlen,Susana E. Deustua,Richard S. Ellis,Sebastien Fabbro,Xiaohui Fan,Brenda Frye,Elinor L. Gates,R. Gibbons,G. Goldhaber,Bertrand Goldman,D. E. Groom,J. Haissinski,D. Hardin,I. M. Hook,D. A. Howell,Dan Kasen,Steve Kent,A. G. Kim,R. A. Knop,Brian C. Lee,C. Lidman,Javier Méndez,G. J. Miller,M. Moniez,A. Mourao,Heidi Jo Newberg,Peter Nugent,R. Pain,O. Perdereau,Saul Perlmutter,V. Prasad,R. M. Quimby,J. Raux,Nicolas Regnault,Jeffrey A. Rich,Gordon T. Richards,P. Ruiz-Lapuente,G. Sainton,B. E. Schaefer,K. Schahmaneche,Eric P. Smith,A. L. Spadafora,Vallery Stanishev,Nicholas A. Walton,Lian-Tao Wang,W. M. Wood-Vasey +57 more
TL;DR: In this article, the authors presented an extensive new time-series of spectroscopic data of the peculiar SN 1999aa in NGC 2595, including 25 optical spectra between -11 and +58 days with respect to B-band maximum light, providing an unusually complete time history.
Journal ArticleDOI
A New Determination of the High Redshift Type Ia Supernova Rates with the Hubble Space Telescope Advanced Camera for Surveys
N. Kuznetsova,Kyle Barbary,B.M. Connolly,A. G. Kim,R. Pain,Natalie A. Roe,Greg Aldering,Rahman Amanullah,Kyle Dawson,Masao Doi,Vitaliy Fadeyev,A. S. Fruchter,R. Gibbons,G. Goldhaber,A. Goobar,Alexander Gude,R. A. Knop,M. Kowalski,C. Lidman,Tomoki Morokuma,J. Meyers,Saul Perlmutter,David Rubin,David J. Schlegel,A. L. Spadafora,Vallery Stanishev,M. Strovink,N. Suzuki,Ling-Jun Wang,Naoki Yasuda +29 more
TL;DR: In this paper, a new measurement of the volumetric rate of Type Ia supernova up to a redshift of 1.7 was presented, using the Hubble Space Telescope (HST) GOODS data combined with an additional HST dataset covering the North GOODS field collected in 2004.
Journal ArticleDOI
Measurement of \Omega_m, \Omega_{\Lambda} from a blind analysis of Type Ia supernovae with CMAGIC: Using color information to verify the acceleration of the Universe
Alex Conley,G. Goldhaber,Lingyu Wang,Greg Aldering,Rahman Amanullah,Eugene D. Commins,Vitaliy Fadeyev,G. Folatelli,G. Garavini,R. Gibbons,A. Goobar,D. E. Groom,I. M. Hook,D. A. Howell,A. G. Kim,R. A. Knop,M. Kowalski,N. Kuznetsova,C. Lidman,S. Nobili,Peter Nugent,R. Pain,Saul Perlmutter,Eric P. Smith,A. L. Spadafora,Vallery Stanishev,M. Strovink,R. C. Thomas,W. M. Wood-Vasey +28 more
TL;DR: In this paper, a blind analysis of 21 high-redshift supernovae using a new technique (CMAGIC) for fitting the multi-color lightcurves of Type Ia supernova was presented.