Observation of cosmic acceleration and determining the fate of the universe - INSPIRE

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Observation of cosmic acceleration and determining the fate of the universe

Jan, 1999

4 pages

Published in:

Phys.Rev.Lett. 83 (1999) 1510-1513

e-Print:

astro-ph/9901405 [astro-ph]

DOI:

10.1103/PhysRevLett.83.1510

Report number:

CWRU-P10-99

View in:

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Abstract: (arXiv)

Current observations of Type Ia supernovae provide evidence for cosmic acceleration out to a redshift of z \lsim 1, leading to the possibility that the universe is entering an inflationary epoch. However, inflation can take place only if vacuum-energy (or other sufficiently slowly redshifting source of energy density) dominates the energy density of a region of physical radius 1/H. We argue that for the best-fit values of

\Omega_\Lambda

and

\Omega_m

inferred from the supernovae data, one must confirm cosmic acceleration out to at least

z \simeq 1.8

to infer that the universe is inflating.

supernova
astrophysics: acceleration
inflation
vacuum state: energy
energy: density
numerical calculations

References(7)

Figures(0)

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

Supernova Cosmology Project

Collaboration

•

S. Perlmutter
(
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)

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

et al.

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e-Print:
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•
DOI:
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Lawrence M. Krauss
(
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)
,
Michael S. Turner
(
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e-Print:
- astro-ph/9504003
•
DOI:
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J.P. Ostriker
(
- Princeton U.
)
,
Paul J. Steinhardt
(
- Pennsylvania U.
)

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•
DOI:
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Lawrence M. Krauss
(
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)

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•
e-Print:
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•
DOI:
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Causality and cosmic inflation

- Phys.Rev.D 61 (1999) 023502
•
e-Print:
- gr-qc/9811037
•
DOI:
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The HST Key Project on the extragalactic distance scale. 15. A Cepheid distance to the Fornax cluster and its implications

et al.

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e-Print:
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•
DOI:
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