5 papers · 1 filter
Cosmic Reionisation by Stellar Sources: Population III Stars
Aaron Sokasian, Naoki Yoshida, Tom Abel +2
We combine fast radiative transfer calculations with high resolution hydrodynamical simulations to study an epoch of early hydrogen reionisation by primordial stellar sources at re…
Early Structure Formation and Reionization in a Cosmological Model with a Running Primordial Power Spectrum
Naoki Yoshida, Aaron Sokasian, Lars Hernquist +1
(abridged) We study high redshift structure formation and reionization in a LCDM universe under the assumption that the spectral power index of primordial density fluctuations is a…
Cosmic Reionisation by Stellar Sources: Population II Stars
Aaron Sokasian, Tom Abel, Lars Hernquist +1
We study the reionisation of the Universe by stellar sources using a numerical approach that combines fast 3D radiative transfer calculations with high resolution hydrodynamical si…
The Nature of the Ionising Background at z=2.5-5
Aaron Sokasian, Tom Abel, Lars E. Hernquist
Using radiative transfer calculations and cosmological simulations of structure formation, we study constraints that can be placed on the nature of the cosmic ultraviolet (UV) back…
Contribution of Bright Extragalactic Radio Sources to Microwave Anisotropy
Aaron Sokasian, Eric Gawiser, George F. Smoot
We estimate the contribution of extragalactic radio sources to fluctuations in sky temperature over the range of frequencies (10-300 GHz) used for Cosmic Microwave Background (CMB)…