University of Illinois Urbana-Champaign

An Analytic Model of Environmental Effects on Cosmic Structure Formation and an Application to Cosmic Accretion Shock

Pavlidou, Vasiliki

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https://hdl.handle.net/2142/85178

Description

Title
An Analytic Model of Environmental Effects on Cosmic Structure Formation and an Application to Cosmic Accretion Shock
Author(s)
Pavlidou, Vasiliki
Issue Date
2005
Doctoral Committee Chair(s)
Fields, Brian D.
Department of Study
Astronomy
Discipline
Astronomy
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Physics, Astronomy and Astrophysics
Language
eng
Abstract
"We apply this new tool to the case of cosmic accretion shocks. We investigate and quantify the effect of environmental factors on the statistical properties of these shocks. For this purpose, we explore two different models. The first ""control"" model uses a Press-Schechter mass function to describe the population of collapsed structures, and assumes that all objects accrete gas of the same density and temperature. The second model treats the accreted material as a multi-temperature, multi-density medium with densities and temperatures derived from the double distribution. We find that the shock environment significantly alters the physical impact of cosmic accretion shocks on the intergalactic medium, as well as the cosmic history of their properties."
Graduation Semester
2005
Type of Resource
text
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http://hdl.handle.net/2142/85178

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