Model- and calibration-independent test of cosmic acceleration

Seikel M, Schwarz D (2009)
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 2009(02): 024.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
Abstract / Bemerkung
We present a calibration-independent test of the accelerated expansion of the universe using supernova type Ia data. The test is also model-independent in the sense that no assumptions about the content of the universe or about the parameterization of the deceleration parameter are made and that it does not assume any dynamical equations of motion. Yet, the test assumes the universe and the distribution of supernovae to be statistically homogeneous and isotropic. A significant reduction of systematic effects, as compared to our previous, calibration-dependent test, is achieved. Accelerated expansion is detected at significant level (4.3 sigma in the 2007 Gold sample, 7.2 sigma in the 2008 Union sample) if the universe is spatially flat. This result depends, however, crucially on supernovae with a redshift smaller than 0.1, for which the assumption of statistical isotropy and homogeneity is less well established.
Erscheinungsjahr
Zeitschriftentitel
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Band
2009
Zeitschriftennummer
02
Artikelnummer
024
ISSN
eISSN
PUB-ID

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Seikel M, Schwarz D. Model- and calibration-independent test of cosmic acceleration. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS. 2009;2009(02): 024.
Seikel, M., & Schwarz, D. (2009). Model- and calibration-independent test of cosmic acceleration. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2009(02), 024. doi:10.1088/1475-7516/2009/02/024
Seikel, M., and Schwarz, D. (2009). Model- and calibration-independent test of cosmic acceleration. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 2009:024.
Seikel, M., & Schwarz, D., 2009. Model- and calibration-independent test of cosmic acceleration. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2009(02): 024.
M. Seikel and D. Schwarz, “Model- and calibration-independent test of cosmic acceleration”, JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, vol. 2009, 2009, : 024.
Seikel, M., Schwarz, D.: Model- and calibration-independent test of cosmic acceleration. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS. 2009, : 024 (2009).
Seikel, Marina, and Schwarz, Dominik. “Model- and calibration-independent test of cosmic acceleration”. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 2009.02 (2009): 024.

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arXiv: 0810.4484

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