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Hydrodynamic Simulation of the Cosmological X-ray Background
Rupert A. C. Croft, Tiziana Di Matteo, Romeel Dav'e +4
(Abridged) We use a hydrodynamic simulation of a LambdaCDM model to predict the extragalactic X-ray background (XRB), focussing on emission from the intergalactic medium (IGM). We…
Baryons in the Warm-Hot Intergalactic Medium
Romeel Davé, Renyue Cen, Jeremiah P. Ostriker +6
Approximately 30-40% of all baryons in the present day universe reside in a warm-hot intergalactic medium (WHIM), with temperatures between 10^5<T<10^7 K. This is a generic predict…
Cooling Radiation and the Lyman-alpha Luminosity of Forming Galaxies
Mark A. Fardal, Neal Katz, Jeffrey P. Gardner +3
We examine the cooling radiation from forming galaxies in hydrodynamic simulations of the LCDM model (cold dark matter with a cosmological constant), focusing on the Ly-alpha line…
Halo Properties in Cosmological Simulations of Self-Interacting Cold Dark Matter
Romeel Davé, David N. Spergel, Paul J. Steinhardt +1
We present a comparison of halo properties in cosmological simulations of collisionless cold dark matter (CDM) and self-interacting dark matter (SIDM) for a range of dark matter cr…
Lyman-alpha Forest Constraints on the Mass of Warm Dark Matter and the Shape of the Linear Power Spectrum
Vijay K. Narayanan, David N. Spergel, Romeel Davé +1
High resolution N-body simulations of cold dark matter (CDM) models predict that galaxies and clusters have cuspy halos with excessive substructure. Observations reveal smooth halo…