Spectral Features from the Reionization Epoch

Abstract

Emission lines in hydrogen can be used to measure the approximate redshift of the reionization of the universe. This is an important measurement given the lack of a convincing theoretical prediction of this epoch. There is a rapid change in absorption at the reionization event, which can leave sharp features in the spectrum of recombining hydrogen. These features in the near infrared background permit us to measure the redshift at which reionization occurs. We have calculated these signals based on numerical simulations of the Lambda-CDM cosmogony.

12 pages, 4 figures, submitted to Ap. J. Letters

References in corpus (2)

• Reionization of the Universe and the Early Production of Metals
• Spectral Features from the Reionization Epoch

Cited by in corpus (15)

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• Mapping Neutral Hydrogen During Reionization with the Ly-alpha Emission from Quasar Ionization Fronts
• New Constraints on inflation from the Cosmic Microwave Background
• Correlation Functions of CMB Anisotropy and Polarization
• The Alcock-Paczynski test in redshifted twenty one centimeter maps
• Quasar Ionization Front Lyα Emission in an Inhomogeneous Intergalactic Medium
• Cosmic microwave background constraints on the epoch of reionization
• Statistical characteristics of formation and evolution of structure in the universe
• Probing High Redshift Radiation Fields with Gamma-Ray Absorption
• Spectral Features from the Reionization Epoch
• Negative intensity patches in angular variations of CMB as a probe of the period of reionization
• The Rees-Sciama effect and the primordial nucleosynthesis