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The 21 Centimeter Background from the Cosmic Dark Ages: Minihalos and the Intergalactic Medium before Reionization
Paul R. Shapiro, Kyungjin Ahn, Marcelo A. Alvarez +3
The H atoms inside minihalos (i.e. halos with virial temperatures T_vir < 10^4 K, in the mass range roughly from 10^4 M_sun to 10^8 M_sun) during the cosmic dark ages in a LambdaCD…
The Cosmic Reionization History as Revealed by the CMB Doppler--21-cm Correlation
Marcelo A. Alvarez, Eiichiro Komatsu, Olivier Doré +1
We show that the epoch(s) of reionization when the ionization fraction of the universe is about half can be determined by correlating Cosmic Microwave Background (CMB) temperature…
Understanding the Equilibrium Structure of CDM Halos
Paul R. Shapiro, Kyungjin Ahn, Marcelo Alvarez +2
N-body simulations find a universal structure for the halos which result from the nonlinear growth of Gaussian-random-noise density fluctuations in the CDM universe. This talk summ…
C^2-Ray: A new method for photon-conserving transport of ionizing radiation
Garrelt Mellema, Ilian T. Iliev, Marcelo A. Alvarez +1
We present a new numerical method for calculating the transfer of ionizing radiation, called C^2-Ray=Conservative, Causal Ray-tracing method. The method is explicitly photon-conser…
The 21-cm Background from the Cosmic Dark Ages: Minihalos and the Intergalactic Medium before Reionization
Kyungjin Ahn, Paul R. Shapiro, Marcelo A. Alvarez +3
The H atoms inside minihalos (i.e. halos with virial temperatures T_vir < 10^4 K, in the mass range roughly from 10^4 M_sun to 10^8 M_sun) during the cosmic dark ages in a LCDM uni…
Relativistic Ionization Fronts
Paul R. Shapiro, Ilian T. Iliev, Marcelo A. Alvarez +1
We derive the equations for the propagation of relativistic ionization fronts in both static and moving gases. We focus on the supersonic R-type phase that occurs right after a sou…