Supermassive black holes in the early Universe

Persistent Link:
http://hdl.handle.net/10150/614765
Title:
Supermassive black holes in the early Universe
Author:
Melia, F. ( 0000-0002-8014-0593 ) ; McClintock, T. M.
Affiliation:
The University of Arizona
Issue Date:
2015-12-16
Publisher:
The Royal Society
Citation:
Supermassive black holes in the early Universe 2015, 471 (2184):20150449 Proceedings of the Royal Society A: Mathematical, Physical and Engineering Science
Journal:
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Science
Rights:
© The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommo ns.org/licenses/ by/4.0/, which permits unrestricted use, provided the origin al author and source are credited
Collection Information:
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
Abstract:
The recent discovery of the ultraluminous quasar SDSS J010013.02+280225.8 at redshift 6.3 has exacerbated the time compression problem implied by the appearance of supermassive black holes only $\sim 900$ Myr after the big bang, and only $\sim 500$ Myr beyond the formation of Pop II and III stars. Aside from heralding the onset of cosmic reionization, these first and second generation stars could have reasonably produced the $\sim 5-20\;M_\odot$ seeds that eventually grew into $z\sim 6-7$ quasars. But this process would have taken $\sim 900$ Myr, a timeline that appears to be at odds with the predictions of $\Lambda$CDM without an anomalously high accretion rate, or some exotic creation of $\sim 10^5\;M_\odot$ seeds. There is no evidence of either of these happening in the local universe. In this paper, we show that a much simpler, more elegant solution to the supermassive black hole anomaly is instead to view this process using the age-redshift relation predicted by the $R_{\rm h}=ct$ Universe, an FRW cosmology with zero active mass. In this context, cosmic reionization lasted from $t\sim 883$ Myr to $\sim 2$ Gyr ($6\lesssim z\lesssim 15$), so $\sim 5-20\;M_\odot$ black hole seeds formed shortly after reionization had begun, would have evolved into $\sim 10^{10}\; M_\odot$ quasars by $z\sim 6-7$ simply via the standard Eddington-limited accretion rate. The consistency of these observations with the age-redshift relationship predicted by $R_{\rm h}=ct$ supports the existence of dark energy; but not in the form of a cosmological constant.
ISSN:
1364-5021; 1471-2946
DOI:
10.1098/rspa.2015.0449
Version:
Final accepted manuscript
Additional Links:
http://rspa.royalsocietypublishing.org/lookup/doi/10.1098/rspa.2015.0449

Full metadata record

DC FieldValue Language
dc.contributor.authorMelia, F.en
dc.contributor.authorMcClintock, T. M.en
dc.date.accessioned2016-06-25T00:29:34Z-
dc.date.available2016-06-25T00:29:34Z-
dc.date.issued2015-12-16-
dc.identifier.citationSupermassive black holes in the early Universe 2015, 471 (2184):20150449 Proceedings of the Royal Society A: Mathematical, Physical and Engineering Scienceen
dc.identifier.issn1364-5021-
dc.identifier.issn1471-2946-
dc.identifier.doi10.1098/rspa.2015.0449-
dc.identifier.urihttp://hdl.handle.net/10150/614765-
dc.description.abstractThe recent discovery of the ultraluminous quasar SDSS J010013.02+280225.8 at redshift 6.3 has exacerbated the time compression problem implied by the appearance of supermassive black holes only $\sim 900$ Myr after the big bang, and only $\sim 500$ Myr beyond the formation of Pop II and III stars. Aside from heralding the onset of cosmic reionization, these first and second generation stars could have reasonably produced the $\sim 5-20\;M_\odot$ seeds that eventually grew into $z\sim 6-7$ quasars. But this process would have taken $\sim 900$ Myr, a timeline that appears to be at odds with the predictions of $\Lambda$CDM without an anomalously high accretion rate, or some exotic creation of $\sim 10^5\;M_\odot$ seeds. There is no evidence of either of these happening in the local universe. In this paper, we show that a much simpler, more elegant solution to the supermassive black hole anomaly is instead to view this process using the age-redshift relation predicted by the $R_{\rm h}=ct$ Universe, an FRW cosmology with zero active mass. In this context, cosmic reionization lasted from $t\sim 883$ Myr to $\sim 2$ Gyr ($6\lesssim z\lesssim 15$), so $\sim 5-20\;M_\odot$ black hole seeds formed shortly after reionization had begun, would have evolved into $\sim 10^{10}\; M_\odot$ quasars by $z\sim 6-7$ simply via the standard Eddington-limited accretion rate. The consistency of these observations with the age-redshift relationship predicted by $R_{\rm h}=ct$ supports the existence of dark energy; but not in the form of a cosmological constant.en
dc.language.isoenen
dc.publisherThe Royal Societyen
dc.relation.urlhttp://rspa.royalsocietypublishing.org/lookup/doi/10.1098/rspa.2015.0449en
dc.rights© The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommo ns.org/licenses/ by/4.0/, which permits unrestricted use, provided the origin al author and source are crediteden
dc.titleSupermassive black holes in the early Universeen
dc.typeArticleen
dc.contributor.departmentThe University of Arizonaen
dc.identifier.journalProceedings of the Royal Society A: Mathematical, Physical and Engineering Scienceen
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en
dc.eprint.versionFinal accepted manuscripten
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