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dc.contributor.authorHaiman, Zoltan
dc.contributor.authorLoeb, Abraham
dc.date.accessioned2019-09-24T12:04:07Z
dc.date.issued1999
dc.identifier.citationHaiman, Zoltan, and Abraham Loeb. 1999. “Determining the Redshift of Reionization from the Spectra of High‐Redshift Sources.” The Astrophysical Journal 519 (2): 479–85. https://doi.org/10.1086/307393.
dc.identifier.issn0004-637X
dc.identifier.issn1538-4357
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:41393244*
dc.description.abstractThe redshift at which the universe was reionized is currently unknown. We examine the optimal strategy for extracting this redshift, z(reion), from the spectra of early sources. For a source located at a redshift z(s) beyond but close to the reionization redshift, (1 + z(reion)) < (1 + z(s)) < 32/27(1 + z(reion)), the Gunn-Peterson trough splits into disjoint Ly alpha, Ly beta, and possibly higher Lyman series troughs, with some transmitted flux between these troughs. We show that although the transmitted flux is suppressed considerably by the dense Ly alpha forest at high redshifts, it could still be detectable as long as z(reion) less than or similar to 8. If the ionizing sources are bright and have a short duty cycle (e.g., if they are miniquasars or starbursts with a lifetime less than or similar to 10(6) yr), then breakthrough occurs shortly after the H II regions around them overlap, and the transmitted flux provides a measurement of z(reion). The Next Generation Space Telescope will reach the spectroscopic sensitivity required for such a measurement.
dc.language.isoen_US
dc.publisherAmerican Astronomical Society
dash.licenseLAA
dc.titleDetermining the Redshift of Reionization from the Spectra of High‐Redshift Sources
dc.typeJournal Article
dc.description.versionVersion of Record
dc.relation.journalThe Astrophysical Journal
dash.depositing.authorLoeb, Abraham::9975df1f269ab49c1ad5a328a1ec1476::600
dc.date.available2019-09-24T12:04:07Z
dash.workflow.comments1Science Serial ID 95548
dc.identifier.doi10.1086/307393
dash.source.volume519;2
dash.source.page479-485


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