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The halo model and numerical simulations
Martin White, Lars Hernquist, Volker Springel
Recently there has been a lot of attention focussed on a virialized halo-based approach to understanding the properties of the matter and galaxy power spectrum. A key ingredient in…
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…
Disks irradiated by beamed radiation from compact objects
Rosalba Perna, Lars Hernquist
We examine the reprocessing of X-ray radiation from compact objects by accretion disks when the X-ray emission from the star is highly beamed. The reprocessed flux for various degr…
First Structure Formation: A Simulation of Small Scale Structure at High Redshift
Hannah Jang-Condell, Lars Hernquist
We describe the results of a simulation of collisionless cold dark matter in a LambdaCDM universe to examine the properties of objects collapsing at high redshift (z=10). We analyz…
Hydrodynamic Simulations of the Sunyaev-Zel'dovich effect(s)
Volker Springel, Martin White, Lars Hernquist
We have performed a sequence of high resolution hydrodynamic simulations of structure formation in a LCDM model to study the thermal and kinetic Sunyaev-Zel'dovich (SZ) effects. In…
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…