Improved Cosmological Constraints from New, Old and Combined Supernova Datasets
M. Kowalski,David Rubin,Greg Aldering,Rui J. Agostinho,Alexis Amadon,Rahman Amanullah,C. Balland,Kyle Barbary,Guillermo A. Blanc,Peter Challis,Alex Conley,Natalia Connolly,R. A. Covarrubias,Kyle S. Dawson,Susana E. Deustua,Richard S. Ellis,Sebastien Fabbro,Vitaliy Fadeyev,Xiaohui Fan,B. Farris,G. Folatelli,Brenda Frye,G. Garavini,Elinor L. Gates,G. Goldhaber,Bertrand Goldman,A. Goobar,D. E. Groom,J. Haissinski,D. Hardin,I. M. Hook,Steve Kent,A. G. Kim,R. A. Knop,C. Lidman,Eric V. Linder,Javier Méndez,J. Meyers,G. J. Miller,M. Moniez,A. Mourao,Heidi Jo Newberg,S. Nobili,Peter Nugent,Reynald Pain,O. Perdereau,Saul Perlmutter,M. M. Phillips,V. Prasad,R. M. Quimby,Nicolas Regnault,Jeffrey A. Rich,E. P. Rubenstein,P. Ruiz-Lapuente,F. D. Santos,B. E. Schaefer,R. A. Schommer,Robert Connon Smith,Alicia M. Soderberg,A. L. Spadafora,M. Strovink,N. B. Suntzeff,Nao Suzuki,R. C. Thomas,N. A. Walton,Lian-Tao Wang,W. M. Wood-Vasey,Joao Lin Yun +67 more
TLDR
In this article, the authors present a new compilation of Type Ia supernovae (SNe Ia), a new dataset of low-redshift nearby-Hubble-flow SNe and new analysis procedures to work with these heterogeneous compilations.Abstract:
We present a new compilation of Type Ia supernovae (SNe Ia), a new dataset of low-redshift nearby-Hubble-flow SNe and new analysis procedures to work with these heterogeneous compilations. This ``Union'' compilation of 414 SN Ia, which reduces to 307 SNe after selection cuts, includes the recent large samples of SNe Ia from the Supernova Legacy Survey and ESSENCE Survey, the older datasets, as well as the recently extended dataset of distant supernovae observed with HST. A single, consistent and blind analysis procedure is used for all the various SN Ia subsamples, and a new procedure is implemented that consistently weights the heterogeneous data sets and rejects outliers. We present the latest results from this Union compilation and discuss the cosmological constraints from this new compilation and its combination with other cosmological measurements (CMB and BAO). The constraint we obtain from supernovae on the dark energy density is $\Omega_\Lambda= 0.713^{+0.027}_{-0.029} (stat)}^{+0.036}_{-0.039} (sys)}$, for a flat, LCDM Universe. Assuming a constant equation of state parameter, $w$, the combined constraints from SNe, BAO and CMB give $w=-0.969^{+0.059}_{-0.063}(stat)^{+0.063}_{-0.066} (sys)$. While our results are consistent with a cosmological constant, we obtain only relatively weak constraints on a $w$ that varies with redshift. In particular, the current SN data do not yet significantly constrain $w$ at $z>1$. With the addition of our new nearby Hubble-flow SNe Ia, these resulting cosmological constraints are currently the tightest available.read more
Citations
More filters
Journal ArticleDOI
Bound dark energy: Towards understanding the nature of dark energy
Erick Almaraz,Axel de la Macorra +1 more
TL;DR: In this article, the authors present a complete analysis of the observational constraints and cosmological implications of the bound dark energy (BDE) model which aims to explain the late-time cosmic acceleration of the Universe.
Journal ArticleDOI
Conformally Friedmann-Lemaitre-Robertson-Walker cosmologies
TL;DR: In a universe where, according to the standard cosmological models, some 97% of the total mass-energy is still "missing in action" it behooves us to spend at least a little effort critically assessing and exploring radical alternatives as discussed by the authors.
Journal ArticleDOI
Crossing $w=-1$ by a single scalar field coupling with matter and the observational constraints
TL;DR: In this article, a logarithmic correction was introduced to the Yang-Mills dark energy model to avoid the coincidence problem naturally and give an equation of state $w$ smoothly crossing -1 if an interaction between dark energy and dark matter exists.
Journal ArticleDOI
Stability of a modified Jordan-Brans-Dicke theory in the dilatonic frame
TL;DR: In this paper, the Jordan-Brans-Dicke action in the cosmological scenario of FLRW spacetime with zero spatially curvature and with an extra scalar field minimally coupled to gravity as a matter source was investigated.
Journal ArticleDOI
Interacting dark energy collapse with matter components separation
Morgan Le Delliou,Tiago Barreiro +1 more
TL;DR: In this paper, the authors used the spherical collapse model of structure formation to investigate the separation in the collapse of uncoupled matter (essentially baryons) and coupled dark matter in an interacting dark energy scenario.
References
More filters
Journal ArticleDOI
Measurements of Omega and Lambda from 42 High-Redshift Supernovae
Saul Perlmutter,Saul Perlmutter,Greg Aldering,Gerson Goldhaber,Gerson Goldhaber,R. A. Knop,Peter Nugent,P. G. Castro,P. G. Castro,Susana E. Deustua,Sebastien Fabbro,Sebastien Fabbro,A. Goobar,A. Goobar,Donald E. Groom,I. M. Hook,I. M. Hook,A. G. Kim,A. G. Kim,A. G. Kim,M. Y. Kim,Julia C. Lee,Julia C. Lee,Nelson J. Nunes,Nelson J. Nunes,Reynald Pain,Reynald Pain,C. R. Pennypacker,C. R. Pennypacker,Robert Quimby,Christopher Lidman,Richard S. Ellis,Mike Irwin,Richard G. McMahon,Pilar Ruiz-Lapuente,Nicholas A. Walton,Bradley E. Schaefer,B. J. Boyle,Alexei V. Filippenko,Thomas Matheson,A. S. Fruchter,Nino Panagia,Nino Panagia,Heidi Jo Newberg,Warrick J. Couch +44 more
TL;DR: In this paper, the mass density, Omega_M, and cosmological-constant energy density of the universe were measured using the analysis of 42 Type Ia supernovae discovered by the Supernova Cosmology project.
Journal ArticleDOI
Maps of Dust Infrared Emission for Use in Estimation of Reddening and Cosmic Microwave Background Radiation Foregrounds
TL;DR: In this article, a reprocessed composite of the COBE/DIRBE and IRAS/ISSA maps, with the zodiacal foreground and confirmed point sources removed, is presented.
Journal ArticleDOI
The relationship between infrared, optical, and ultraviolet extinction
TL;DR: In this article, the average extinction law over the 3.5 micron to 0.125 wavelength range was derived for both diffuse and dense regions of the interstellar medium. And the validity of the law over a large wavelength interval suggests that the processes which modify the sizes and compositions of grains are stochastic in nature.
Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant To Appear in the Astronomical Journal
Adam G. Riess,Alexei V. Filippenko,Peter Challis,A. Clocchiatti,Alan H. Diercks,R. L. Gilliland,Craig J. Hogan,Saurabh Jha,Robert P. Kirshner,Bruno Leibundgut,David J Reiss,Brian P. Schmidt,Robert A. Schommer,R. Chris Smith,Jason Spyromilio,Christopher W. Stubbs,Nicholas B. Suntzeff,John L. Tonry +17 more
TL;DR: The spectral and photometric observations of 10 type Ia supernovae (SNe Ia) in the redshift range 0.16 � z � 0.62 were presented in this paper.
Journal ArticleDOI
Detection of the baryon acoustic peak in the large-scale correlation function of SDSS luminous red galaxies
Daniel J. Eisenstein,Daniel J. Eisenstein,Idit Zehavi,David W. Hogg,Roman Scoccimarro,Michael R. Blanton,Robert C. Nichol,Ryan Scranton,Hee-Jong Seo,Max Tegmark,Max Tegmark,Zheng Zheng,Scott F. Anderson,James Annis,Neta A. Bahcall,Jon Brinkmann,Scott Burles,Francisco J. Castander,Andrew J. Connolly,István Csabai,Mamoru Doi,Masataka Fukugita,Joshua A. Frieman,Joshua A. Frieman,Karl Glazebrook,James E. Gunn,John S. Hendry,Greg Hennessy,Zeljko Ivezic,Stephen M. Kent,Gillian R. Knapp,Huan Lin,Yeong Shang Loh,Robert H. Lupton,Bruce Margon,Timothy A. McKay,Avery Meiksin,Jeffrey A. Munn,Adrian Pope,Michael W. Richmond,David J. Schlegel,Donald P. Schneider,Kazuhiro Shimasaku,Chris Stoughton,Michael A. Strauss,Mark SubbaRao,Mark SubbaRao,Alexander S. Szalay,István Szapudi,Douglas L. Tucker,Brian Yanny,Donald G. York +51 more
TL;DR: In this paper, a large-scale correlation function measured from a spectroscopic sample of 46,748 luminous red galaxies from the Sloan Digital Sky Survey is presented, which demonstrates the linear growth of structure by gravitational instability between z ≈ 1000 and the present and confirms a firm prediction of the standard cosmological theory.
Related Papers (5)
Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
Adam G. Riess,Alexei V. Filippenko,Peter Challis,Alejandro Clocchiattia,Alan H. Diercks,Peter M. Garnavich,R. L. Gilliland,Craig J. Hogan,Saurabh Jha,Robert P. Kirshner,Bruno Leibundgut,Mark M. Phillips,David J Reiss,Brian P. Schmidt,Robert A. Schommer,R. Chris Smith,Jason Spyromilio,Christopher W. Stubbs,Nicholas B. Suntzeff,John L. Tonry +19 more
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
Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
Detection of the baryon acoustic peak in the large-scale correlation function of SDSS luminous red galaxies
Daniel J. Eisenstein,Daniel J. Eisenstein,Idit Zehavi,David W. Hogg,Roman Scoccimarro,Michael R. Blanton,Robert C. Nichol,Ryan Scranton,Hee-Jong Seo,Max Tegmark,Max Tegmark,Zheng Zheng,Scott F. Anderson,James Annis,Neta A. Bahcall,Jon Brinkmann,Scott Burles,Francisco J. Castander,Andrew J. Connolly,István Csabai,Mamoru Doi,Masataka Fukugita,Joshua A. Frieman,Joshua A. Frieman,Karl Glazebrook,James E. Gunn,John S. Hendry,Greg Hennessy,Zeljko Ivezic,Stephen M. Kent,Gillian R. Knapp,Huan Lin,Yeong Shang Loh,Robert H. Lupton,Bruce Margon,Timothy A. McKay,Avery Meiksin,Jeffrey A. Munn,Adrian Pope,Michael W. Richmond,David J. Schlegel,Donald P. Schneider,Kazuhiro Shimasaku,Chris Stoughton,Michael A. Strauss,Mark SubbaRao,Mark SubbaRao,Alexander S. Szalay,István Szapudi,Douglas L. Tucker,Brian Yanny,Donald G. York +51 more