Galaxy Formation and the Intergalactic Medium Research Group

Department of Astronomy, University of Texas at Austin

Group Leader: Professor Paul Shapiro

RESEARCH (ALL YEARS)

PAUL R.SHAPIRO Professor (Astronomy) ADS astro-ph
HUGO MARTEL Professor (Université Laval) ADS astro-ph
ILIAN T. ILIEV Postdoctoral Researcher (Zuerich) ADS astro-ph
LEONID CHUZHOY Postdoctoral Fellow (U. Chicago) ADS astro-ph
KYUNGJIN AHN Postdoctoral Fellow (Astronomy) ADS astro-ph
MARCELO ALVAREZ Postdoctoral Fellow (Stanford) ADS astro-ph
JUN KODA Graduate Student (Physics) ADS astro-ph

RESEARCH SUMMARY (1992 - 2003)

A. COSMOLOGY

  1. Chemistry in the Early Universe: The Role of H2 Molecules in Galaxy and Primordial Star Formation
    1. Radiative Shocks and Hydrogen Molecules in Pregalactic Gas: The Effects of Postshock Radiation
    2. Radiative Shocks in Protogalaxies and the Origin of Globular Clusters
    3. Hydrogen Molecules in the Evolving Diffuse IGM in a Cold Dark Matter (CDM) Model Universe
  2. The Reionization of the Intergalactic Medium ("IGM")
    1. The Reionization of the Universe and its Observational Consequences
    2. Reionization in a Cold Dark Matter Universe: The Feedback of Galaxy Formation on the Intergalactic Medium
    3. Reionization Feedback and the Photoevaporation of Intergalactic Clouds
    4. Reionization of the Universe and the Photoevaporation of Cosmological Minihalos
  3. Adaptive Smoothed Particle Hydrodynamics ("ASPH"): A New Numerical Method With Application to Galaxy and Large-Scale Structure Formation
    1. The New ASPH Method
    2. ASPH Simulations of Cosmological Gas Dynamics in 2D
    3. Explosions During Galaxy Formation
    4. False Cooling
  4. Likely Values of the Cosmological Constant: A Probability Argument to Resolve the Cosmological Constant Problem
  5. The Dynamics of Cosmic Structure Formation. I: Analytical Studies
    1. Galaxy Formation and Number Counts in Lambda > 0 Friedmann Universes
    2. A Convenient Set of Comoving Cosmological Variables and Their Application
    3. Nonlinear Perturbation Theory in Cosmology
    4. Three-Dimensional Shape Statistics and Galaxy Clustering
    5. The Cosmological Evolution of Top-Hat Density Perturbations
    6. Postcollapse Equilibrium Structure of Cosmological Halos
    7. The Asymptotic Collapsed Fraction in an Eternal Universe
    8. Formation and Evolution of Self-Interacting Dark Matter Halos
  6. The Dynamics of Cosmic Structure Formation. II: Numerical Studies
    1. The Gravitational Instability of Cosmological Pancakes
    2. Morphological Evolution of Galaxies
    3. A Database of COBE-Normalized CDM Simulations
    4. The Origin and Evolution of Cosmological Halos
  7. Light Propagation and Gravitational Lensing in Inhomogeneous Universes
    1. An Improved Version of the Multiple Lens-Plane Method
    2. Cosmological Parameter Survey
    3. Magnification Bias and the Quasar Luminosity Functions
  8. The Cosmic Dark Ages
    1. On the Direct Detectability of the Cosmic Dark Ages: 21-cm Emission from Minihalos

B. THE INTERSTELLAR MEDIUM

  1. Superbubbles in the Galactic Disk and Halo: Magnetohydrodynamic Simulations
  2. Fragmentation of Molecular Clouds. The Effect of Rotation
  3. The Spectrum of Cooling Galactic Fountain Gas
  4. Dust Grain Carriers and the Diffuse Band Profiles
  5. Shadows Behind Neutral Clumps in Photoionized Regions

Simulations of Cosmological Structure Formation