Mathematics – Logic
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...191.9501k&link_type=abstract
American Astronomical Society, 191st AAS Meeting, #95.01; Bulletin of the American Astronomical Society, Vol. 29, p.1363
Mathematics
Logic
Scientific paper
High-redshift supernovae are a significant new tool for measuring the cosmological parameters Omega_0 and Lambda that describe our expanding universe. We have shown that the rare, random, and transient supernovae can be systematically detected and studied at high redshifts. So far, we have discovered and studied ~ 50 supernovae at redshifts z = 0.18 -- 0.83, and identified most of these as Type Ia supernovae. Using these supernovae as ``calibrated candles,'' we can perform measurements of the cosmological parameters. Our first seven supernovae produced a confidence strip on the Omega -Lambda plane. Recent results with supernovae at higher redshifts, coupled with high quality light curves measured by the HST, allow us to close the contours in this confidence region, providing independent measurements of Omega_M and Lambda .
Aldering Greg
Cosmology Project Supernova
Della Valle Massimo
Deustua Susana
Ellis Richard S.
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