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Formation of a spiral galaxy in a major merger
Volker Springel, Lars Hernquist
We use numerical simulations to examine the structure of merger remnants resulting from collisions of gas-rich spiral galaxies. When the gas fraction of the progenitors is small, t…
Modeling feedback from stars and black holes in galaxy mergers
Volker Springel, Tiziana Di Matteo, Lars Hernquist
We describe techniques for incorporating feedback from star formation and black hole accretion into simulations of isolated and merging galaxies. At present, the details of these p…
Confronting cosmological simulations with observations of intergalactic metals
Anthony Aguirre, Joop Schaye, Lars Hernquist +3
Using the statistics of pixel optical depths, we compare HI, CIV and CIII absorption in a set of six high quality z ~ 3-4 quasar absorption spectra to that in spectra drawn from tw…
Lyman-alpha Emission from Structure Formation
Steven Furlanetto, Joop Schaye, Volker Springel +1
The nature of the interaction between galaxies and the intergalactic medium (IGM) is one of the most fundamental problems in astrophysics. The accretion of gas onto galaxies provid…
Detecting Sunyaev-Zel'dovich clusters with PLANCK: I. Construction of all-sky thermal and kinetic SZ-maps
Bjoern Malte Schaefer, Christoph Pfrommer, Matthias Bartelmann +2
All-sky thermal and kinetic Sunyaev-Zel'dovich (SZ) maps are presented for assessing how well the PLANCK-mission can find and characterise clusters of galaxies, especially in the p…
Constraining the Topology of Reionization Through Lyman-alpha Absorption
Steven Furlanetto, Lars Hernquist, Matias Zaldarriaga
The reionization of hydrogen in the intergalactic medium (IGM) is a crucial landmark in the history of the universe, but the processes through which it occurs remain mysterious. In…