dc.contributor.author | Wyithe, J. Stuart B. | |
dc.contributor.author | Loeb, Abraham | |
dc.date.accessioned | 2019-09-26T15:01:05Z | |
dc.date.issued | 2009 | |
dc.identifier.citation | Wyithe, J. Stuart B., and Abraham Loeb. 2009. “The 21-Cm Power Spectrum after Reionization.” Monthly Notices of the Royal Astronomical Society 397 (4): 1926–34. https://doi.org/10.1111/j.1365-2966.2009.15019.x. | |
dc.identifier.issn | 0035-8711 | |
dc.identifier.issn | 1365-2966 | |
dc.identifier.uri | http://nrs.harvard.edu/urn-3:HUL.InstRepos:41412158 | * |
dc.description.abstract | We discuss the 21-cm power spectrum (PS) following the completion of reionization. In contrast to the reionization era, this PS is proportional to the PS of mass density fluctuations, with only a small modulation due to fluctuations in the ionization field on scales larger than the mean-free-path of ionizing photons. We derive the form of this modulation, and demonstrate that its effect on the 21-cm PS will be smaller than 1 per cent for physically plausible models of damped Ly alpha systems. In contrast to the 21-cm PS observed prior to reionization, in which H ii regions dominate the ionization structure, the simplicity of the 21-cm PS after reionization will enhance its utility as a cosmological probe by removing the need to separate the PS into physical and astrophysical components. As a demonstration, we consider the Alcock-Paczynski test and show that the next generation of low-frequency arrays could measure the angular distortion of the PS at the per cent level for z similar to 3-5. | |
dc.language.iso | en_US | |
dc.publisher | Oxford University Press | |
dash.license | LAA | |
dc.title | The 21-cm power spectrum after reionization | |
dc.type | Journal Article | |
dc.description.version | Version of Record | |
dc.relation.journal | Monthly Notices of the Royal Astronomical Society | |
dash.depositing.author | Loeb, Abraham::e022a3952362350ac8a0138f128a8be7::600 | |
dc.date.available | 2019-09-26T15:01:05Z | |
dash.workflow.comments | 1Science Serial ID 66349 | |
dc.identifier.doi | 10.1111/j.1365-2966.2009.15019.x | |
dash.source.volume | 397;4 | |
dash.source.page | 1926-1934 | |