216 citations · 1.2k across the 41 of their papers we have counts for
5 papers · 2 filters
Comment on the Relativistic Galactic Model by Cooperstock and Tieu
Dylan Menzies, Grant J. Mathews
It has recently been suggested that observed galaxy rotation curves can be accounted for by general relativity without recourse to dark-matter halos. A number of objections have be…
Primordial magnetic field constrained from CMB anisotropies,and its generation and evolution before, during and after the BBN
Dai G. Yamazaki, Kiyotomo Ichiki, Toshitaka Kajino +1
The primordial magnetic field (PMF) can strongly affect the cosmic microwave background (CMB) power spectrum and the formation of large scale structure. In this presentation, we ca…
Bulk Viscosity, Decaying Dark Matter, and the Cosmic Acceleration
James R. Wilson, Grant J. Mathews, George M. Fuller
We discuss a cosmology in which cold dark-matter particles decay into relativistic particles. We argue that such decays could lead naturally to a bulk viscosity in the cosmic fluid…
Li Production by the Radiative Decay of Long-Lived Particles
Motohiko Kusakabe, Toshitaka Kajino, Grant J. Mathews
Recent spectroscopic observations of metal poor stars have indicated that both Li and Li have abundance plateaus with respect to the metallicity. Abundances of Li are a…
Neutron-capture elements in the metal-poor globular cluster M15
Kaori Otsuki, Satoshi Honda, Wako Aoki +2
We report on observations of six giants in the globular cluster M15 (NGC 7078) using the Subaru Telescope to measure neutron-capture elemental abundances. Our abundance analyses ba…