Working towards an optimal sampling of the 21 cm signal parameter space

Global 21 cm signal experiments : A designer ’ s guide

COSMIC REIONIZATION AND THE 21 cm SIGNAL: COMPARISON BETWEEN AN ANALYTICAL MODEL AND A SIMULATION

We measure several properties of the reionization process and the corresponding low-frequency 21 cm signal associated with the neutral hydrogen distribution, using a large volume, high-resolution simulation of cosmic reionization. The brightness temperature of the 21 cm signal is derived by postprocessing this numerical simulationwith a semianalytical prescription. Our study extends to high red...

Redshift Space 21 Cm Power Spectra from Reionization

We construct a simple but self-consistent analytic ionization model for rapid exploration of 21cm power spectrum observables in redshift space. It is fully described by the average ionization fraction xe(z) and HII patch size R(z) and has the flexibility to accommodate various reionization scenarios. The model associates ionization regions with dark matter halos of the number density required t...

Toward Optimal Configuration Space Sampling

Sampling-based motion planning discovers the implicit connectivity of a configuration space by selecting and connecting sets of configurations. The structure of every configuration space dictates a number of optimal sets of samples whose selection by a sampling-based planner results in a complete roadmap of the space. Though it is generally computationally impractical to develop complete knowle...

The contribution of the IGM and minihalos to the 21 cm signal of reionization

We study the statistical properties of the cosmological 21 cm signal from both the intergalactic medium (IGM) and minihalos, using a reionization simulation that includes a self–consistent treatment of minihalo photoevaporation. We consider two models for minihalo formation and three typical thermal states of the IGM – heating purely by ionization, heating from both ionizing and Lyα photons, an...