84 citations · 241 across the 5 of their papers we have counts for
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Combining WMAP and SDSS Quasar Data on Reionization Constrains Cosmological Parameters and the Star Formation Efficiency
Weihsueh A. Chiu, Xiaohui Fan, Jeremiah P. Ostriker
We present constraints on cosmological and star formation parameters based on combining observations of the Wilkinson Microwave Anisotropy Probe (WMAP) and high-redshift quasars fr…
The Expected Mass Function for Low Mass Galaxies in a CDM Cosmology: Is There a Problem?
Weihsueh A. Chiu, Nickolay Y. Gnedin, Jeremiah P. Ostriker
It is well known that the mass function for_halos_ in CDM cosmology is a relatively steep power law for low masses, possibly too steep to be consistent with observations. But how s…
A Semi-Analytic Model for Cosmological Reheating and Reionization Due to the Gravitational Collapse of Structure
Weihsueh A. Chiu, Jeremiah P. Ostriker
We present a semi-analytic model for the thermal and ionization history of the universe at 1000 >~ z >~ 3. This model incorporates much of the essential physics included in full-sc…
Stellar Atmospheres Near an AGN: The Importance of Radiation Pressure from Trapped Lyman-alpha Photons
Weihsueh A. Chiu, B. T. Draine
We derive an analytic expression for the intensity of resonance-line radiation ``trapped'' in a semi-infinite medium. Given a source function and destruction probability per scatte…
Using Cluster Abundances and Peculiar Velocities to Test the Gaussianity of the Cosmological Density Field
Weihsueh A. Chiu, Jeremiah P. Ostriker, Michael A. Strauss
(Abridged) By comparing the frequency of typical events with that of unusual events, one can test whether the cosmological density distribution function is consistent with the norm…