Very high redshift quasars and the rapid emergence of supermassive black holes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10422076" target="_blank" >RIV/00216208:11320/20:10422076 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=GwoCAxKq7I" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=GwoCAxKq7I</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/mnras/staa2276" target="_blank" >10.1093/mnras/staa2276</a>
Alternative languages
Result language
angličtina
Original language name
Very high redshift quasars and the rapid emergence of supermassive black holes
Original language description
The observation of quasars at very high redshift such as Poniua'ena is a challenge for models of supermassive black hole (SMBH) formation. This work presents a study of SMBH formation via known physical processes in starburst clusters formed at the onset of the formation of their hosting galaxy. While at the early stages hypermassive starburst clusters reach the luminosities of quasars, once their massive stars die, the ensuing gas accretion from the still forming host galaxy compresses its stellar black hole (BH) component to a compact state overcoming heating from the BH-BH binaries such that the cluster collapses, forming a massive SMBH-seed within about a hundred Myr. Within this scenario, the SMBH-spheroid correlation emerges near to exactly. The highest redshift quasars may thus be hypermassive starburst clusters or young ultracompact dwarf galaxies (UCDs), being the precursors of the SMBHs that form therein within about 200 Myr of the first stars. For spheroid masses less than or similar to 10(9.6) M-circle dot, an SMBH cannot form and instead only the accumulated nuclear cluster remains. The number evolution of the quasar phases with redshift is calculated and the possible problem of missing quasars at very high redshift is raised. SMBH-bearing UCDs and the formation of spheroids are discussed critically in view of the high-redshift observations. A possible tension is found between the high star formation rates (SFRs) implied by downsizing and the observed SFRs, which may be alleviated within the IGIMF theory and if the downsizing times are somewhat longer.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GA20-21855S" target="_blank" >GA20-21855S: The dynamics of dense star clusters with primordial binaries and massive black holes</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Monthly Notices of the Royal Astronomical Society
ISSN
0035-8711
e-ISSN
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Volume of the periodical
498
Issue of the periodical within the volume
4
Country of publishing house
GB - UNITED KINGDOM
Number of pages
32
Pages from-to
5652-5683
UT code for WoS article
000587755500078
EID of the result in the Scopus database
2-s2.0-85096743197