Mathematics – Logic
Scientific paper
Aug 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..339...39r&link_type=abstract
Observing Dark Energy, ASP Conference Series, Vol. 339, Proceedings of a meeting held 18-20 March 2004 in Tucson, Arizona. Edit
Mathematics
Logic
Scientific paper
We have discovered 16 Type Ia supernovae (SNe Ia) with the Hubble Space Telescope (HST) and have used them to provide the first conclusive evidence for cosmic deceleration that preceded the current epoch of cosmic acceleration. Joint constraints on both the recent equation of state of dark energy, w0, and its time evolution, dw/dz, are a factor of ˜ 8 more precise than its first estimate, and twice as precise as those without the SNe Ia discovered with HST. Our constraints are consistent with the static nature and value of w expected for a cosmological constant (i.e., w0 = -1.0, dw/dz = 0), and are inconsistent with very rapid evolution of dark energy.
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