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Dark Energy and the New Cosmology
Michael S. Turner
A successor to the standard hot big-bang cosmology is emerging. It greatly extends the highly successful hot big-bang model. A key element of the New Standard Cosmology is dark ene…
Do SNe Ia Provide Direct Evidence for Past Deceleration of the Universe?
Michael S. Turner, Adam Riess
Observations of SN 1997ff at z ~ 1.7 favor the accelerating Universe interpretation of the high-redshift type Ia supernova data over simple models of intergalactic dust or SN lumin…
The Case for Omega_M = 0.33 +/- 0.035
Michael S. Turner
For decades, the determination of the mean density of matter(Omega_M) has been tied to the distribution of light. This has led to a ``bias,'' perhaps as large as a factor of 2, in…
New HST spectra indicate the QSO PG1718+4807 will not give the primordial deuterium abundance
David Kirkman, David Tytler, John M. O'Meara +6
The z ~ 0.701 absorption system towards the QSO PG1718+4807 is the only example of a QSO absorption system which might have a deuterium/hydrogen ratio approximately ten times the v…
Constraining the Properties of Dark Energy
Dragan Huterer, Michael S. Turner
The presence of dark energy in the Universe is inferred directly from the accelerated expansion of the Universe, and indirectly, from measurements of cosmic microwave background (C…
A Sober Assessment of Cosmology at the New Millennium
Michael S. Turner
Cosmology is the dot com of the sciences. Boom or bust. It is about nothing less than the origin and evolution of the Universe, the all of everything. It is the boldest of enterpri…