Matches in SemOpenAlex for { <https://semopenalex.org/work/W3046133325> ?p ?o ?g. }
- W3046133325 abstract "The observation of quasars at very high redshift such as Poniuaena is a challenge for models of super-massive black hole (SMBH) formation. This work presents a study of SMBH formation via known physical processes in star-burst clusters formed at the onset of the formation of their hosting galaxy. While at the early stages hyper-massive star-burst 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 hyper-massive star-burst clusters or young ultra-compact dwarf galaxies (UCDs), being the precursors of the SMBHs that form therein within about 200 Myr of the first stars. For spheroid masses <10^9.6 Msun a 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." @default.
- W3046133325 created "2020-08-03" @default.
- W3046133325 creator A5001222540 @default.
- W3046133325 creator A5059024553 @default.
- W3046133325 creator A5061177743 @default.
- W3046133325 creator A5091415707 @default.
- W3046133325 date "2020-08-05" @default.
- W3046133325 modified "2023-10-11" @default.
- W3046133325 title "Very high redshift quasars and the rapid emergence of super-massive black holes" @default.
- W3046133325 cites W11134133 @default.
- W3046133325 cites W1497710305 @default.
- W3046133325 cites W1533662085 @default.
- W3046133325 cites W1576357568 @default.
- W3046133325 cites W1592361698 @default.
- W3046133325 cites W1613174287 @default.
- W3046133325 cites W1759927439 @default.
- W3046133325 cites W1904244634 @default.
- W3046133325 cites W1925976652 @default.
- W3046133325 cites W1966333385 @default.
- W3046133325 cites W1972327829 @default.
- W3046133325 cites W1974917880 @default.
- W3046133325 cites W1975081997 @default.
- W3046133325 cites W1975889887 @default.
- W3046133325 cites W1977033153 @default.
- W3046133325 cites W1977439877 @default.
- W3046133325 cites W1977788189 @default.
- W3046133325 cites W1980487276 @default.
- W3046133325 cites W1984716389 @default.
- W3046133325 cites W1985370957 @default.
- W3046133325 cites W1987989728 @default.
- W3046133325 cites W1990148897 @default.
- W3046133325 cites W1990401433 @default.
- W3046133325 cites W1990934390 @default.
- W3046133325 cites W1993671841 @default.
- W3046133325 cites W1999733321 @default.
- W3046133325 cites W2003814700 @default.
- W3046133325 cites W2007828370 @default.
- W3046133325 cites W2010638185 @default.
- W3046133325 cites W2013686387 @default.
- W3046133325 cites W2015295900 @default.
- W3046133325 cites W2019773167 @default.
- W3046133325 cites W2019934217 @default.
- W3046133325 cites W2022240628 @default.
- W3046133325 cites W2023793647 @default.
- W3046133325 cites W2025512391 @default.
- W3046133325 cites W2027369274 @default.
- W3046133325 cites W2027649935 @default.
- W3046133325 cites W2030703638 @default.
- W3046133325 cites W2031742540 @default.
- W3046133325 cites W2032317739 @default.
- W3046133325 cites W2033223429 @default.
- W3046133325 cites W2033592757 @default.
- W3046133325 cites W2034227336 @default.
- W3046133325 cites W2034547488 @default.
- W3046133325 cites W2035467611 @default.
- W3046133325 cites W2037771611 @default.
- W3046133325 cites W2037809736 @default.
- W3046133325 cites W2039954136 @default.
- W3046133325 cites W2040985627 @default.
- W3046133325 cites W2041255398 @default.
- W3046133325 cites W2043535910 @default.
- W3046133325 cites W2045565446 @default.
- W3046133325 cites W2046854465 @default.
- W3046133325 cites W2048527892 @default.
- W3046133325 cites W2051919906 @default.
- W3046133325 cites W2053321229 @default.
- W3046133325 cites W2053959467 @default.
- W3046133325 cites W2054219587 @default.
- W3046133325 cites W2057016204 @default.
- W3046133325 cites W2057980978 @default.
- W3046133325 cites W2058149529 @default.
- W3046133325 cites W2060304114 @default.
- W3046133325 cites W2061112700 @default.
- W3046133325 cites W2063189448 @default.
- W3046133325 cites W2066645046 @default.
- W3046133325 cites W2072088379 @default.
- W3046133325 cites W2074930723 @default.
- W3046133325 cites W2077501833 @default.
- W3046133325 cites W2079799663 @default.
- W3046133325 cites W2082361697 @default.
- W3046133325 cites W2087070473 @default.
- W3046133325 cites W2088308551 @default.
- W3046133325 cites W2088686146 @default.
- W3046133325 cites W2094722018 @default.
- W3046133325 cites W2094871238 @default.
- W3046133325 cites W2096712108 @default.
- W3046133325 cites W2098548730 @default.
- W3046133325 cites W2100071475 @default.
- W3046133325 cites W2103144524 @default.
- W3046133325 cites W2105015588 @default.
- W3046133325 cites W2105023288 @default.
- W3046133325 cites W2106654062 @default.
- W3046133325 cites W2107436274 @default.
- W3046133325 cites W2109003336 @default.
- W3046133325 cites W2111767615 @default.
- W3046133325 cites W2115767518 @default.
- W3046133325 cites W2116319113 @default.
- W3046133325 cites W2117138716 @default.
- W3046133325 cites W2128627294 @default.
- W3046133325 cites W2129760210 @default.