{"volume":576,"_id":"17746","extern":"1","title":"The detectability of high-redshift Lyα emission lines prior to the reionization of the universe","publication_status":"published","abstract":[{"text":"For a source of Lyα radiation embedded in a neutral intergalactic medium (IGM) prior to the reionization epoch, the Lyα emission line is strongly suppressed by the intervening IGM. The damping wing of the so-called Gunn-Peterson trough can extend to the red side of the emission line and erase a significant fraction of the total line flux. However, the transmitted fraction increases with the size of the local cosmological H II region surrounding the source, and therefore with the ionizing luminosity and age of the source. Motivated by the recent discovery of a Lyα-emitting galaxy at a redshift z = 6.56 (Hu et al.), possibly prior to the reionization of the IGM, we revisit the effects of a neutral IGM on the Lyα emission line. We show that for faint sources with little or even no ionizing continuum, a sufficiently broad (Δv ≳ 300 km s^-1) emission line can still remain observable. In particular, the line detected by Hu et al. is consistent with a source embedded in a neutral IGM. We provide characterizations of the asymmetry and total transmitted flux of the Lyα line as functions of the ionizing emissivity of its source. We argue that a statistical sample of Lyα emitters extending beyond the reionization redshift can be a useful probe of reionization.","lang":"eng"}],"intvolume":"       576","article_processing_charge":"No","quality_controlled":"1","scopus_import":"1","month":"07","publication_identifier":{"issn":["0004-637X","1538-4357"]},"publication":"The Astrophysical Journal","year":"2002","doi":"10.1086/343101","oa":1,"publisher":"American Astronomical Society","type":"journal_article","citation":{"mla":"Haiman, Zoltán. “The Detectability of High-Redshift Lyα Emission Lines Prior to the Reionization of the Universe.” <i>The Astrophysical Journal</i>, vol. 576, no. 1, American Astronomical Society, 2002, pp. L1–4, doi:<a href=\"https://doi.org/10.1086/343101\">10.1086/343101</a>.","ieee":"Z. Haiman, “The detectability of high-redshift Lyα emission lines prior to the reionization of the universe,” <i>The Astrophysical Journal</i>, vol. 576, no. 1. American Astronomical Society, pp. L1–L4, 2002.","ista":"Haiman Z. 2002. The detectability of high-redshift Lyα emission lines prior to the reionization of the universe. The Astrophysical Journal. 576(1), L1–L4.","apa":"Haiman, Z. (2002). The detectability of high-redshift Lyα emission lines prior to the reionization of the universe. <i>The Astrophysical Journal</i>. American Astronomical Society. <a href=\"https://doi.org/10.1086/343101\">https://doi.org/10.1086/343101</a>","chicago":"Haiman, Zoltán. “The Detectability of High-Redshift Lyα Emission Lines Prior to the Reionization of the Universe.” <i>The Astrophysical Journal</i>. American Astronomical Society, 2002. <a href=\"https://doi.org/10.1086/343101\">https://doi.org/10.1086/343101</a>.","short":"Z. Haiman, The Astrophysical Journal 576 (2002) L1–L4.","ama":"Haiman Z. The detectability of high-redshift Lyα emission lines prior to the reionization of the universe. <i>The Astrophysical Journal</i>. 2002;576(1):L1-L4. doi:<a href=\"https://doi.org/10.1086/343101\">10.1086/343101</a>"},"oa_version":"Published Version","date_updated":"2024-09-26T14:51:17Z","day":"31","status":"public","main_file_link":[{"open_access":"1","url":"https://doi.org/10.1086/343101"}],"date_published":"2002-07-31T00:00:00Z","article_type":"original","language":[{"iso":"eng"}],"issue":"1","page":"L1-L4","author":[{"first_name":"Zoltán","full_name":"Haiman, Zoltán","last_name":"Haiman","id":"7c006e8c-cc0d-11ee-8322-cb904ef76f36"}],"date_created":"2024-09-06T09:34:46Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345"}