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Probing dark energy...
Probing dark energy inhomogeneities with supernovae
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- Blomqvist, Michael (author)
- Stockholms universitet,Institutionen för astronomi
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- Mörtsell, Edvard (author)
- Stockholms universitet,Fysikum
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- Noboli, Serena (author)
- Stockholms universitet,Fysikum
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(creator_code:org_t)
- 2008-06-23
- 2008
- English.
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In: Journal of Cosmology and Astroparticle Physics. - : IOP Publishing. - 1475-7516. ; 06, s. 027-
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Abstract
Subject headings
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- We discuss the possibility of identifying anisotropic and/or inhomogeneous cosmological models using type Ia supernova data. A search for correlations in current type Ia peak magnitudes over a large range of angular scales yields a null result. However, the same analysis limited to supernovae at low redshift shows a feeble anticorrelation at the 2σ level at angular scales θ≈40°. Upcoming data from, e.g., the SNLS (Supernova Legacy Survey) and the SDSS-II (SDSS: Sloan Digital Sky Survey) supernova searches will improve our limits on the size of—or possibly detect—possible correlations also at high redshift at the per cent level in the near future. With data from the proposed SNAP (SuperNova Acceleration Probe) satellite, we will be able to detect the induced correlations from gravitational lensing on type Ia peak magnitudes on scales less than a degree.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- Astronomy and astrophysics
- Astronomi och astrofysik
- Cosmology
- Kosmologi
- Astronomy
- astronomi
Publication and Content Type
- ref (subject category)
- art (subject category)
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