2007A&A...473..727O

Query : 2007A&A...473..727O

2007A&A...473..727O - Astronomy and Astrophysics, volume 473727-731 (2007/10-3)

Decaying dark energy in higher-dimensional gravity.

OVERDUIN J.M., WESSON P.S. and MASHHOON B.

Abstract (from CDS):

We use data from observational cosmology to put constraints on higher-dimensional extensions of general relativity in which the effective four-dimensional dark-energy density (or cosmological ``constant'') decays with time.In particular we study the implications of this decaying dark energy for the age of the universe, large-scale structure formation, big-bang nucleosynthesis and the magnitude-redshift relation for type Ia supernovae. Two of these tests (age and the magnitude-redshift relation) place modest lower limits on the free parameter of the theory, a cosmological length scale L akin to the de Sitter radius. These limits will improve if experimental uncertainties on supernova magnitudes can be reduced around z∼1.

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Journal keyword(s): cosmology: theory - stars: supernovae: general

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 SN 1997ff SN* 12 36 44.10 +62 12 44.7         26.77 SNIa 67 1

Query : 2007A&A...473..727O

Basic data :
SN 1997ff -- SuperNova
Other object types: otypes_help 		SN* (2012A&A,SN)
ICRS coord. (ep=J2000) : 		12 36 44.10 +62 12 44.7 [ ] D 2008yCat.2283....0B
FK4 coord. (ep=B1950 eq=1950) : 		12 34 30.08 +62 29 14.6 [ ]
Gal coord. (ep=J2000) : 		125.90627 +54.83084 [ ]
Radial velocity / Redshift / cz : 		V(km/s) 229992 [~] / z(~) 1.755 [~] / cz 526136 [~]
   D 2004ApJ...602...12Z
Spectral type: 		SNIa C 2008yCat....1.2024B
Fluxes (1) :
I 26.77 [~] D 2008yCat.2283....0B
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Identifiers (1) :
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SN 1997ff

References (67 between 1850 and 2026) (Total 67)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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