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The Full Re-Ionization of Helium
James W. Wadsley, Craig J. Hogan, Scott F. Anderson
Observations of resolved HeII Lyman alpha absorption in spectra of two QSO's suggest that the epoch of helium ionization occurred at z~3. Proximity zones in the spectra of the quas…
Theoretical Tools for Large Scale Structure
J. R. Bond, L. Kofman, D. Pogosyan +1
We review the main theoretical aspects of the structure formation paradigm which impinge upon wide angle surveys: the early universe generation of gravitational metric fluctuations…
Cosmic Web: Origin and Observables
D. Pogosyan, J. R. Bond, L. Kofman +1
Simple analytic arguments are used to understand the predominantly filamentary web in the large-scale distribution of galaxies. Numerical simulations of superclusters are performed…