67 citations · 400 across the 18 of their papers we have counts for
10 papers · 1 filter
Astrophysical evidence for the existence of black holes
Annalisa Celotti, John C. Miller, Dennis W. Sciama
Following a short account of the history of the idea of black holes, we present a review of the current status of the search for observational evidence of their existence aimed at…
On the Interaction Between Cosmic Rays and Dark Matter Molecular Clouds - II. The Age Distribution of Cosmic Ray Electrons
D. W. Sciama
We explore further the proposal in paper I of this series that the confinement time of cosmic ray nuclei in the Milky Way is determined by their interaction with dark matter molecu…
On the Interaction Between Cosmic Rays and Dark Matter Molecular Clouds in the Milky Way. l Basic Considerations
D. W. Sciama
We explore some basic observational consequences of assuming that the dark matter in the Milky Way consists mainly of molecular clouds, and that cosmic rays can penetrate these clo…
Are Neutrino Oscillations Compatible with the Decaying Neutrino Theory for the Ionisation of Hydrogen in the Interstellar Medium?
D. W. Sciama
Recent Super-Kamiokande data have greatly strengthened the hypothesis that the atmospheric neutrino anomaly is mainly due to nearly maximal oscillations between and either $ν…
Optical Emission Lines from Warm Interstellar Clouds - a Decisive Test of the Decaying Neutrino Theory
D. W. Sciama
Recently developed instruments such as the Taurus Tunable Filter and WHAM should be able to detect some or all of the optical emission lines H, [OI] 6300, [SII] 6717, [NI]…
Updated Parameters for the Decaying Neutrino Theory and EURD Observations of the Diffuse UV Background
D. W. Sciama
Various recent observational developments are here used to make a more critical analysis of the parameter space of the decaying neutrino theory for the ionisation of the interstell…
Decaying Neutrinos and the Flattening of the Galactic Halo
D. W. Sciama
The recently constructed Dehnen-Binney set of mass models for the Galaxy is used to show that the decaying neutrino theory for the ionisation of the interstellar medium (Sciama 199…
An updated precision estimate of the Hubble constant and the age and density of the Universe in the decaying neutrino theory
D. W. Sciama
We here update the derivation of precise values for the Hubble constant H_0, the age t_0 and the density parameter Omega*h^2 of the universe in the decaying neutrino theory for the…
On the Ionisation of Warm Opaque Interstellar Clouds and the Intercloud Medium
D. W. Sciama
In this paper we use a number of observations to construct an integrated picture of the ionisation in the interiors of quiescent warm opaque interstellar clouds and in the interclo…
Reconstructing Positions \& Peculiar Velocities of Galaxy Clusters within 25000 km/sec: The Bulk Velocity
Enzo Branchini, Manolis Plionis, Dennis W. Sciama
Using a dynamical 3-D reconstruction procedure we estimate the peculiar velocities of Abell/ACO galaxy clusters from their measured redshift within 25000 km/sec. The recons…