Reconstruction of the deceleration parameter and the equation of state of dark energy - INSPIRE

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Reconstruction of the deceleration parameter and the equation of state of dark energy

Yun-Gui Gong
(
- CUPT, Chongqing and
- Baylor U.
)
,
Anzhong Wang
(
- Baylor U.
)

Dec, 2006

Published in:

Phys.Rev.D 75 (2007) 043520

e-Print:

astro-ph/0612196 [astro-ph]

DOI:

10.1103/PhysRevD.75.043520

View in:

ADS Abstract Service

reference search208 citations

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Abstract: (arXiv)

The new 182 gold supernova Ia data, the baryon acoustic oscillation measurement and the shift parameter determined from the Sloan Digital Sky Survey and the three-year Wilkinson Microwave Anisotropy Probe data are combined to reconstruct the dark energy equation of state parameter

w(z)

and the deceleration parameter

q(z)

. We find that the strongest evidence of acceleration happens around the redshift

z\sim 0.2

and the stringent constraints on

w(z)

lie in the redshift range

z\sim 0.2-0.5

. At the sweet spot,

-1.2<w(z)<-0.6

for the dark energy parametrization

w(z)=w_0+w_a z/(1+z)^2

at the

3\sigma

confidence level. The transition redshift

z_t

when the Universe underwent the transition from deceleration to acceleration is derived to be

z_t=0.36^{+0.23}_{-0.08}

. The combined data is also applied to find out the geometry of the Universe, and we find that at the

3\sigma

confidence level, |\Omega_k|\alt 0.05 for the simple one parameter dark energy model, and

-0.064<\Omega_k<0.028

for the

\Lambda

CDM model.

95.36.+x
98.80.Es
dark energy: parametrization
equation of state
supernova
baryon: oscillation
oscillation: acoustic
cosmic background radiation
redshift
expansion: deceleration

References(56)

Figures(0)

Observational evidence from supernovae for an accelerating universe and a cosmological constant

et al.

- Astron.J. 116 (1998) 1009-1038
•
e-Print:
- astro-ph/9805201
•
DOI:
- 10.1086/300499

Measurements of $\Omega$ and $\Lambda$ from 42 High Redshift Supernovae

Supernova Cosmology Project

Collaboration

•

S. Perlmutter
(
- UC, Berkeley, CfPA
)

et al.

- Astrophys.J. 517 (1999) 565-586
•
e-Print:
- astro-ph/9812133
•
DOI:
- 10.1086/307221

Type Ia supernova discoveries at z > 1 from the Hubble Space Telescope: Evidence for past deceleration and constraints on dark energy evolution

et al.

- Astrophys.J. 607 (2004) 665-687
•
e-Print:
- astro-ph/0402512
•
DOI:
- 10.1086/383612

The Supernova Legacy Survey: Measurement of $\Omega_M$ , $\Omega_\Lambda$ and ${\cal w}$ from the first year data set

SNLS

Collaboration

•

P. Astier
(
- Paris U., VI-VII
)

et al.

- Astron.Astrophys. 447 (2006) 31-48
•
e-Print:
- astro-ph/0510447
•
DOI:
- 10.1051/0004-6361:20054185

New Hubble Space Telescope Discoveries of Type Ia Supernovae at z>=1: Narrowing Constraints on the Early Behavior of Dark Energy

et al.

- Astrophys.J. 659 (2007) 98-121
•
e-Print:
- astro-ph/0611572
•
DOI:
- 10.1086/510378

Wilkinson Microwave Anisotropy Probe (WMAP) three year results: implications for cosmology

WMAP

Collaboration

•

D.N. Spergel
(
- Princeton U., Astrophys. Sci. Dept. and
- Cerro-Tololo InterAmerican Obs.
)

et al.

- Astrophys.J.Suppl. 170 (2007) 377
•
e-Print:
- astro-ph/0603449
•
DOI:
- 10.1086/513700

Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies

SDSS

Collaboration

•

Daniel J. Eisenstein
(
- Arizona U.
)

et al.

- Astrophys.J. 633 (2005) 560-574
•
e-Print:
- astro-ph/0501171
•
DOI:
- 10.1086/466512

The Case for a positive cosmological Lambda term

Varun Sahni
(
- IUCAA, Pune
)
,
Alexei A. Starobinsky
(
- Landau Inst.
)

- Int.J.Mod.Phys.D 9 (2000) 373-444
•
e-Print:
- astro-ph/9904398
•
DOI:
- 10.1142/S0218271800000542

Cosmological constant: The Weight of the vacuum

T. Padmanabhan
(
- IUCAA, Pune
)

- Phys.Rept. 380 (2003) 235-320
•
e-Print:
- hep-th/0212290
•
DOI:
- 10.1016/S0370-1573(03)00120-0

The Cosmological Constant and Dark Energy

P.J.E. Peebles
(
- Princeton U.
)
,
Bharat Ratra
(
- Kansas State U.
)

- Rev.Mod.Phys. 75 (2003) 559-606,
•
e-Print:
- astro-ph/0207347
•
DOI:
- 10.1103/RevModPhys.75.559

Dynamics of dark energy

Edmund J. Copeland
(
- Nottingham U.
)
,
M. Sami
(
- Jamia Millia Islamia
)
,
Shinji Tsujikawa
(
- Gunma Coll. Tech.
)

- Int.J.Mod.Phys.D 15 (2006) 1753-1936
•
e-Print:
- hep-th/0603057
•
DOI:
- 10.1142/S021827180600942X

On the determination of the deceleration parameter from supernovae data

J.-M. Virey
(
- Marseille, CPT and
- Provence U.
)
,
P. Taxil
(
- Marseille, CPT and
- Provence U.
)
,
A. Tilquin
(
- Marseille, CPPM
)
,
A. Ealet
(
- Marseille, CPPM
)
,
C. Tao
(
- Marseille, CPPM
)

et al.

- Phys.Rev.D 72 (2005) 061302
•
e-Print:
- astro-ph/0502163
•
DOI:
- 10.1103/PhysRevD.72.061302

What do we really know about cosmic acceleration?

Charles Shapiro
(
- Chicago U. and
- Chicago U., KICP
)
,
Michael S. Turner
(
- Chicago U., KICP and
- Chicago U., Astron. Astrophys. Ctr.
)

- Astrophys.J. 649 (2006) 563-569
•
e-Print:
- astro-ph/0512586
•
DOI:
- 10.1086/506470

Observational constraints on the acceleration of the universe

Yungui Gong
(
- CUPT, Chongqing and
- Baylor U.
)
,
Anzhong Wang
(
- Baylor U.
)

- Phys.Rev.D 73 (2006) 083506
•
e-Print:
- astro-ph/0601453
•
DOI:
- 10.1103/PhysRevD.73.083506

Can luminosity distance measurements probe the equation of state of dark energy

Pierre Astier
(
- Paris U., VI-VII
)

- Phys.Lett.B 500 (2001) 8-15
•
e-Print:
- astro-ph/0008306
•
DOI:
- 10.1016/S0370-2693(01)00072-7

Probing the dark energy: Methods and strategies

Dragan Huterer
(
- Chicago U., EFI
)
,
Michael S. Turner
(
)

- Phys.Rev.D 64 (2001) 123527
•
e-Print:
- astro-ph/0012510
•
DOI:
- 10.1103/PhysRevD.64.123527

Future supernovae observations as a probe of dark energy

Jochen Weller
(
- Cambridge U., DAMTP
)
,
Andreas Albrecht
(
- UC, Davis
)

- Phys.Rev.D 65 (2002) 103512
•
e-Print:
- astro-ph/0106079
•
DOI:
- 10.1103/PhysRevD.65.103512

Is there supernova evidence for dark energy metamorphosis ?

Ujjaini Alam
(
- IUCAA, Pune
)
,
Varun Sahni
(
- IUCAA, Pune
)
,
Tarun Deep Saini
(
- Cambridge U., Inst. of Astron.
)
,
A.A. Starobinsky
(
- Landau Inst.
)

- Mon.Not.Roy.Astron.Soc. 354 (2004) 275
•
e-Print:
- astro-ph/0311364
•
DOI:
- 10.1111/j.1365-2966.2004.08189.x

Model independent analysis of dark energy. 1. Supernova fitting result

Yun-Gui Gong
(
- CUPT, Chongqing
)

- Class.Quant.Grav. 22 (2005) 2121-2133
•
e-Print:
- astro-ph/0405446
•
DOI:
- 10.1088/0264-9381/22/11/014

Probing the curvature and dark energy

- Phys.Rev.D 72 (2005) 043518
•
e-Print:
- astro-ph/0502262
•
DOI:
- 10.1103/PhysRevD.72.043518

Accelerating universes with scaling dark matter

Michel Chevallier
(
- Tours U., CNRS
)
,
David Polarski
(
- Tours U., CNRS and
- Montpellier U.
)

- Int.J.Mod.Phys.D 10 (2001) 213-224
•
e-Print:
- gr-qc/0009008
•
DOI:
- 10.1142/S0218271801000822

Exploring the expansion history of the universe

Eric V. Linder
(
- LBL, Berkeley
)

- Phys.Rev.Lett. 90 (2003) 091301
•
e-Print:
- astro-ph/0208512
•
DOI:
- 10.1103/PhysRevLett.90.091301

WMAP constraints on low redshift evolution of dark energy

H.K. Jassal
(
- IUCAA, Pune
)
,
J.S. Bagla
(
- Harish-Chandra Res. Inst.
)
,
T. Padmanabhan
(
- IUCAA, Pune
)

- Mon.Not.Roy.Astron.Soc. 356 (2005) L11-L16
•
e-Print:
- astro-ph/0404378
•
DOI:
- 10.1111/j.1745-3933.2005.08577.x

Cosmological parameters from supernova observations: A Critical comparison of three data sets

T.Roy Choudhury
(
- SISSA, Trieste
)
,
T. Padmanabhan
(
- IUCAA, Pune
)

- Astron.Astrophys. 429 (2005) 807
•
e-Print:
- astro-ph/0311622
•
DOI:
- 10.1051/0004-6361:20041168

Opportunities for future supernova studies of cosmic acceleration

Jochen Weller
(
- UC, Davis and
- Imperial Coll., London
)
,
Andreas Albrecht
(
- UC, Davis
)

- Phys.Rev.Lett. 86 (2001) 1939-1942
•
e-Print:
- astro-ph/0008314
•
DOI:
- 10.1103/PhysRevLett.86.1939

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