87 citations · 300 across the 13 of their papers we have counts for
12 papers · 1 filter
The relation of galaxies and dark matter haloes to the filamentary cosmic web
Navdha, Philipp Busch, Simon D. M. White
We use the Millennium Simulation to study the relation of galaxies and dark matter haloes to the cosmic web. We define the web as the unique, fully connected, percolating object wi…
A CRASH simulation of the contribution of binary stars to the epoch of reionization
Qing-Bo Ma, Silvia Fiaschi, Benedetta Ciardi +2
We use a set of 3D radiative transfer simulations to study the effect that a large fraction of binary stars in galaxies during the epoch of reionization has on the physical propert…
The Boosted Potential
Jens Stücker, Raul E. Angulo, Philipp Busch
The global gravitational potential, , is not commonly employed in the analysis of cosmological simulations, since its level sets do not show any clear correspondence to the unde…
Investigating X-ray sources during the epoch of reionization with the 21 cm signal
Qing-Bo Ma, Benedetta Ciardi, Marius B. Eide +3
Heating of neutral gas by energetic sources is crucial for the prediction of the 21 cm signal during the epoch of reionization (EoR). To investigate differences induced on statisti…
Large scale simulations of H and He reionization and heating driven by stars and more energetic sources
Marius B. Eide, Benedetta Ciardi, Luca Graziani +3
We present simulations of cosmic reionization and reheating from to , investigating the role of stars (emitting soft UV-photons), nuclear black holes (BHs, with power-l…
Opening Reionization: Quantitative Morphology of the Epoch of Reionization and Its Connection to the Cosmic Density Field
Philipp Busch, Marius B. Eide, B. Ciardi +1
We introduce a versatile and spatially resolved morphological characterisation of binary fields, rooted in the opening transform of mathematical morphology. We subsequently apply i…
Probing the high-z IGM with the hyperfine transition of He
Shivan Khullar, Qingbo Ma, Philipp Busch +3
The hyperfine transition of He at 3.5cm has been thought as a probe of the high-z IGM since it offers a unique insight into the evolution of the helium component of the gas…
Observing the redshifted 21 cm signal around a bright QSO at
Qing-Bo Ma, Benedetta Ciardi, Koki Kakiichi +3
We use hydrodynamics and radiative transfer simulations to study the 21~cm signal around a bright QSO at . Due to its powerful UV and X-ray radiation, the QSO quickly in…
The Tessellation-Level-Tree: characterising the nested hierarchy of density peaks and their spatial distribution in cosmological N-body simulations
Philipp Busch, Simon D. M. White
We use the Millennium and Millennium-II simulations to illustrate the Tessellation-Level-Tree (TLT), a hierarchical tree structure linking density peaks in a field constructed by v…
The median density of the Universe
Jens Stücker, Philipp Busch, Simon D. M. White
Despite the fact that the mean matter density of the universe has been measured to an accuracy of a few percent within the standard CDM paradigm, its median density is not known…
Recovering the HII region size statistics from 21-cm tomography
Koki Kakiichi, Suman Majumdar, Garrelt Mellema +7
We introduce a novel technique, called "granulometry", to characterize and recover the mean size and the size distribution of HII regions from 21-cm tomography. The technique is ea…
Assembly Bias and Splashback in Galaxy Clusters
Philipp Busch, Simon D. M. White
We use publicly available data for the Millennium Simulation to explore the implications of the recent detection of assembly bias and splashback signatures in a large sample of gal…