Author pages are created from data sourced from our academic publisher partnerships and public sources.
Share This Author
Primordial nucleosynthesis redux
The abundances of D, He-3, He-4, and Li-7, are presently recalculated within the framework of primordial nucleosynthesis in the standard hot big band model, in order to estimate the primordial…
Nucleosynthesis, neutrino bursts and γ-rays from coalescing neutron stars
NEUTRON-STAR collisions occur inevitably when binary neutron stars spiral into each other as a result of damping of gravitational radiation. Such collisions will produce a characteristic burst of…
Big-bang nucleosynthesis enters the precision era
The last parameter of big-bang nucleosynthesis, the baryon density, is being pinned down by measurements of the deuterium abundance in high-redshift hydrogen clouds. When it is determined, it will
Geological Isotope Anomalies as Signatures of Nearby Supernovae
Nearby supernova explosions may cause geological isotope anomalies via the direct deposition of debris or by cosmic-ray spallation in the earth's atmosphere. We estimate the mass of material…
Could a nearby supernova explosion have caused a mass extinction?
It is examined the possibility that a nearby supernova explosion could have caused one or more of the mass extinctions identified by paleontologists, and the possible rate of such events is discussed.
Neutrino Opacities at High Temperatures and Densities
A detailed calculation is made of the major cross sections contributing to neutrino opacities at high temperatures and densities such as those encountered in gravitational collapse. These…
The tidal disruption of neutron stars by black holes in close binaries.
The formation of close, doubly compact binary systems from close massive binaries is considered. Massive X-ray binaries are shown to be possible progenitors of these systems. The recent observation…
Cosmological Limits to the Number of Massive Leptons