The DOI matches its Crossref record; 80 of the 80 references it cites were found in a registry or an index.
Is there supernova evidence for dark energy metamorphosis?
Open accessAbstract
We reconstruct the equation of state w(z) of dark energy (DE) using a recently released data set containing 172 Type Ia supernovae (SNe) without assuming the prior w(z) ≥−1 (in contrast to previous studies). We find that DE evolves rapidly and metamorphoses from dust‐like behaviour at high z (w≃ 0 at z∼ 1) to a strongly negative equation of state at present (w≲−1 at z≃ 0). DE metamorphosis appears to be a robust phenomenon which manifests for a large variety of SNe data samples provided one does not invoke the weak energy prior ρ+p≥ 0. Invoking this prior considerably weakens the rate of growth of w(z). These results demonstrate that DE with an evolving equation of state provides a compelling alternative to a cosmological constant if data are analysed in a prior‐free manner and the weak energy condition is not imposed by hand.
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Cites
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Cited by
Bamba, K., Capozziello, S., Nojiri, S., & Odintsov, S. D. (2012) · Astrophysics and Space Science · doi:10.1007/s10509-012-1181-8 · Cited by 2,387
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Self-citationTwo new diagnostics of dark energy
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Self-citation
Metadata
- Authors
- Alam, U., Sahni, V., Deep Saini, T., & Starobinsky, A. A.
- Venue
- Monthly Notices of the Royal Astronomical Society
- Publisher
- Oxford University Press (OUP)
- Published
- 2004-10
- Volume
- 354
- Issue
- 1
- Pages
- 275-291
- ISSN
- 0035-8711 (ISSN-L)
- 1365-2966
- OpenAlex
- W2038283991
- Cited by
- 484
- References
- 80
- FWCI
- 36.43
- Type
- journal article
- Language
- en
- Open access
- green
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