{"volume":269,"date_published":"1999-12-01T00:00:00Z","author":[{"id":"7c006e8c-cc0d-11ee-8322-cb904ef76f36","last_name":"Haiman","orcid":"0000-0003-3633-5403","first_name":"Zoltán","full_name":"Haiman, Zoltán"}],"scopus_import":"1","month":"12","language":[{"iso":"eng"}],"status":"public","title":"Radiative feedback from the first objects and the end of the cosmological dark age","article_type":"original","publication_status":"published","publisher":"Springer Nature","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","year":"1999","publication_identifier":{"issn":["0004-640X"],"eissn":["1572-946X"]},"quality_controlled":"1","date_updated":"2025-01-03T12:08:38Z","citation":{"chicago":"Haiman, Zoltán. “Radiative Feedback from the First Objects and the End of the Cosmological Dark Age.” <i>Astrophysics and Space Science</i>. Springer Nature, 1999. <a href=\"https://doi.org/10.1023/a:1017062512507\">https://doi.org/10.1023/a:1017062512507</a>.","ista":"Haiman Z. 1999. Radiative feedback from the first objects and the end of the cosmological dark age. Astrophysics and Space Science. 269, 191–199.","ama":"Haiman Z. Radiative feedback from the first objects and the end of the cosmological dark age. <i>Astrophysics and Space Science</i>. 1999;269:191-199. doi:<a href=\"https://doi.org/10.1023/a:1017062512507\">10.1023/a:1017062512507</a>","ieee":"Z. Haiman, “Radiative feedback from the first objects and the end of the cosmological dark age,” <i>Astrophysics and Space Science</i>, vol. 269. Springer Nature, pp. 191–199, 1999.","apa":"Haiman, Z. (1999). Radiative feedback from the first objects and the end of the cosmological dark age. <i>Astrophysics and Space Science</i>. Springer Nature. <a href=\"https://doi.org/10.1023/a:1017062512507\">https://doi.org/10.1023/a:1017062512507</a>","short":"Z. Haiman, Astrophysics and Space Science 269 (1999) 191–199.","mla":"Haiman, Zoltán. “Radiative Feedback from the First Objects and the End of the Cosmological Dark Age.” <i>Astrophysics and Space Science</i>, vol. 269, Springer Nature, 1999, pp. 191–99, doi:<a href=\"https://doi.org/10.1023/a:1017062512507\">10.1023/a:1017062512507</a>."},"doi":"10.1023/a:1017062512507","extern":"1","article_processing_charge":"No","publication":"Astrophysics and Space Science","type":"journal_article","intvolume":"       269","_id":"18725","OA_type":"closed access","oa_version":"None","date_created":"2025-01-03T12:07:53Z","day":"01","page":"191-199","abstract":[{"lang":"eng","text":"In hierarchical models of structure formation, an early cosmic UV background(UVB) is produced by the small (T vir ≲ 104K) halos that collapse before cosmological reionization. If the sources in the first collapsed halos are stars, then their UV flux below 13.6 eV photo-dissociates the molecular hydrogen H2 in subsequently collapsing halos and causes a pause in the cosmic star-formation history. The buildup of the UVB, and reionization is delayed until larger halos (T vir ≳ 104K) collapse. In contrast, if the small halos host mini-quasars with hard spectra extending to∼1keV, then their X-rays balance the effects of the UVB, the negative feedback does not occur, and reionization can be caused early on by the small halos."}]}