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A Fresh Look at Axions and SN 1987A
Wolfgang Keil, Hans-Thomas Janka, David N. Schramm +3
We re-examine the very stringent limits on the axion mass based on the strength and duration of the neutrino signal from SN 1987A, in the light of new measurements of the axial-vec…
Detectability of inflation-produced gravitational waves
Michael S. Turner
Detection of the gravitational waves excited during inflation as quantum mechanical fluctuations is a key test of inflation and crucial to learning about the specifics of the infla…
Comment on ``The Dispersion Velocity of Galactic Dark Matter Particles''
Evalyn Gates, Marc Kamionkowski, Michael S. Turner
In a recent Letter (astro-ph/9605001), Cowsik et al. claim that a self-consistent treatment of the dark Galactic halo requires that the local velocity dispersion of dark-matter par…
The Big-Bang Nucleosynthesis Limit to the Number of Neutrino Species
Craig J Copi, David N. Schramm, Michael S. Turner
Concern about systematic uncertainty in the He abundance as well as the chemical evolution of He leads us to re-examine this important limit. It is shown that with conserva…
Cold Dark Matter Models
Scott Dodelson, Evalyn Gates, Michael S. Turner
Motivated by inflation, the theory of big-bang nucleosynthesis and the quest for a deeper understanding of the fundamental forces and particles, a very successful paradigm for the…
Cosmological Implications of the First Measurement of the Local ISM Abundance of He
Michael S. Turner, James W. Truran, David N. Schramm +1
Deuterium plays a crucial role in testing big-bang nucleosynthesis. Its chemical evolution, while simple (it is burned to He), is intertwined with the more complicated evolutio…
MACHOs: The Plot Thickens
Michael S. Turner, Evalyn I. Gates, Geza Gyuk
We discuss the implications of the recent upward revision of the LMC microlensing rate by the MACHO Collaboration. We conclude: (i) A good case for the existence of baryonic dark m…
Gamma Rays and the Decay of Neutrinos from SN1987A
A. Jaffe, M. S. Turner
We calculate limits to the properties of massive, unstable neutrinos using data from gamma-ray detectors on the Pioneer Venus Orbiter Satellite; a massive neutrino emitted from SN1…