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Dive into the research topics where Robert D. Gibbons is active.

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Featured researches published by Robert D. Gibbons.


The Astrophysical Journal | 2003

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; G. Aldering; Rahman Amanullah; P. Astier; G. Blanc; M. S. Burns; A. Conley; S. E. Deustua; Mamoru Doi; Richard S. Ellis; Sebastien Fabbro; G. Folatelli; Andrew S. Fruchter; G. Garavini; S. Garmond; K. Garton; Robert D. Gibbons; G. Goldhaber; Ariel Goobar; Donald E. Groom; D. Hardin; I. M. Hook; Dale Andrew Howell; A. G. Kim; Ben Lee; C. Lidman; J. Mendez; S. Nobili; P. Nugent; R. Pain

We report measurements of


Astronomy and Astrophysics | 2005

Spectroscopic confirmation of high-redshift supernovae with the ESO VLT

C. Lidman; D. A. Howell; G. Folatelli; G. Garavini; S. Nobili; Gregory Scott Aldering; Rahman Amanullah; P. Antilogus; P. Astier; G. Blanc; M. S. Burns; A. Conley; Susana Elizabeth Deustua; Mamoru Doi; Richard S. Ellis; S. Fabbro; V. Fadeyev; Robert D. Gibbons; G. Goldhaber; Ariel Goobar; Donald E. Groom; I. M. Hook; Nobunari Kashikawa; A. G. Kim; R. A. Knop; Ben Lee; J. Mendez; Kentaro Motohara; Peter E. Nugent; R. Pain

\Omega_M


The Astronomical Journal | 2004

Spectroscopic Observations and Analysis of the Peculiar SN 1999aa

G. Garavini; G. Folatelli; Ariel Goobar; S. Nobili; G. Aldering; A. Amadon; Rahman Amanullah; P. Astier; C. Balland; G. Blanc; M. S. Burns; A. Conley; T. Dahlén; S. E. Deustua; Richard S. Ellis; S. Fabbro; Xiaohui Fan; B. Frye; Elinor L. Gates; Robert D. Gibbons; G. Goldhaber; B. Goldman; Donald E. Groom; J. Haissinski; D. Hardin; I. M. Hook; D. A. Howell; D. Kasen; Steve Kent; Alex G. Kim

,


Astronomy and Astrophysics | 2005

Restframe I-band Hubble diagram for type Ia supernovae up to redshift z~0.5

S. Nobili; Rahman Amanullah; G. Garavini; Ariel Goobar; C. Lidman; V. Stanishev; Gregory Scott Aldering; P. Antilogus; P. Astier; M. S. Burns; A. Conley; Susana Elizabeth Deustua; Richard S. Ellis; S. Fabbro; V. Fadeyev; G. Folatelli; Robert D. Gibbons; G. Goldhaber; Donald E. Groom; I. M. Hook; Da A. Howell; A. G. Kim; Robert Andrew Knop; Peter E. Nugent; R. Pain; S. Perlmutter; Robert Michael Quimby; J. Raux; N. Regnault; Pilar Ruiz-Lapuente

\Omega_\Lambda


Archive | 1999

Late-time HST/STIS observations of GRB 990510.

Andrew S. Fruchter; Henry C. Ferguson; John V. Pepper; Robert D. Gibbons; Kailash C. Sahu; E. Pian

, and w from eleven supernovae at z=0.36-0.86 with high-quality lightcurves measured using WFPC-2 on the HST. This is an independent set of high-redshift supernovae that confirms previous supernova evidence for an accelerating Universe. Combined with earlier Supernova Cosmology Project data, the new supernovae yield a flat-universe measurement of the mass density


The Astrophysical Journal | 2007

Quantitative Comparison Between Type Ia Supernova Spectra at Low and High Redshifts: A Case Study

G. Garavini; Gaston Folatelli; S. Nobili; Gregory Scott Aldering; Rahman Amanullah; P. Antilogus; P. Astier; G. Blanc; J Bronder; M. S. Burns; A. Conley; Susana Elizabeth Deustua; Mamoru Doi; S. Fabbro; Fadeyev; Robert D. Gibbons; G. Goldhaber; Ariel Goobar; Donald E. Groom; I. M. Hook; Dale Andrew Howell; Nobunari Kashikawa; A. G. Kim; M. Kowalski; Natalia V. Kuznetsova; Ben Lee; C. Lidman; J. Mendez; Kentaro Motohara; Peter E. Nugent

\Omega_M=0.25^{+0.07}_{-0.06}


Archive | 2006

Restframe I-band light curves of SN Ia (Nobili+, 2005)

S. Nobili; Rahman Amanullah; G. Garavini; Ariel Goobar; C. Lidman; V. Stanishev; Gregory Scott Aldering; P. Antilogus; Pierre Astier; M. S. Burns; A. Conley; Susana Elizabeth Deustua; Richard S. Ellis; Sebastien Fabbro; V. Fadeyev; Gaston Folatelli; Robert D. Gibbons; G. Goldhaber; Donald E. Groom; Isobel M. Hook; Dale Andrew Howell; Alex G. Kim; Robert Andrew Knop; Peter E. Nugent; R. Pain; S. Perlmutter; Robert Michael Quimby; J. Raux; Nicolas Regnault; Pilar Ruiz-Lapuente

(statistical)


Lawrence Berkeley National Laboratory | 2005

Restframe I-band Hubble diagram for type Ia supernovae up to redshift z ~; 0.5

S. Nobili; Rahman Amanullah; G. Garavini; Ariel Goobar; C. Lidman; V. Stanishev; Gregory Scott Aldering; P. Antilogus; P. Astier; Burns; A. Conley; Susana Elizabeth Deustua; Richard S. Ellis; S. Fabbro; V. Fadeyev; Gaston Folatelli; Robert D. Gibbons; G. Goldhaber; Donald E. Groom; I. M. Hook; Dale Andrew Howell; A. G. Kim; Robert Andrew Knop; Peter E. Nugent; R. Pain; S. Perlmutter; Robert Michael Quimby; J. Raux; Nicolas Regnault; Pilar Ruiz-Lapuente

\pm0.04


Archive | 2004

A Set of Nearby SNe Ia Lightcurves

Marc E. Kowalski; Gregory Scott Aldering; A. Conley; B. Farris; V. Fadeyev; Brenda Frye; Robert D. Gibbons; G. Goldhaber; Donald E. Groom; Dale Andrew Howell; Daniel Kasen; Alex G. Kim; Ben Lee; Peter E. Nugent; S. Perlmutter; V. Kamakshi Prasad; Robert Michael Quimby; Nicolas Regnault; A. L. Spadafora; Richard C. Thomas; Lu Wang; William Michael Wood-Vasey; A. Amadon; Rahman Amanullah; Gaston Folatelli; G. Garavini; Ariel Goobar; S. Nobili; V. Stanishev; Pierre Astier

(identified systematics), or equivalently, a cosmological constant of


Archive | 2004

Cosmological Constraints from the First Supernova Discovered above Redshift of One.

V. Fadeyev; Gregory Scott Aldering; Rahman Amanullah; Pierre Astier; M. S. Burns; A. Conley; Richard S. Ellis; Sebastien Fabbro; Gaston Folatelli; Andrew S. Fruchter; G. Garavini; Robert D. Gibbons; Gerson Goldhaber; Ariel Goobar; Donald E. Groom; Isobel M. Hook; Dale Andrew Howell; Alex G. Kim; Robert Andrew Knop; M. Kowalski; C. Lidman; Juan E. Mendez; S. Nobili; Peter Edward Nugent; Reynald Pain; N. Panagia; Saul Perlmutter; J. Raux; Pilar Ruiz-Lapuente; G. Sainton

\Omega_\Lambda=0.75^{+0.06}_{-0.07}

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A. Conley

University of Colorado Boulder

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Donald E. Groom

Lawrence Berkeley National Laboratory

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Gregory Scott Aldering

Lawrence Berkeley National Laboratory

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Dale Andrew Howell

Las Cumbres Observatory Global Telescope Network

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G. Goldhaber

University of California

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Ariel Goobar

Lawrence Berkeley National Laboratory

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