FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3121885757> ?p ?o ?g. }

• W3121885757 endingPage "1699" @default.
• W3121885757 startingPage "1690" @default.
• W3121885757 abstract "We study a model in which supermassive black holes (SMBHs) can grow by the combined action of gas accretion on heavy seeds and mergers of both heavy (m_s^h=10^5 Msol) and light (m_s^l = 10^2 Msol) seeds. The former result from the direct collapse of gas in T_s^h >1.5x10^4K, H_2-free halos; the latter are the endproduct of a standard H_2-based star formation process. The H_2-free condition is attained by exposing halos to a strong (J_21 > 10^3) Lyman-Werner UV background produced by both accreting BHs and stars, thus establishing a self-regulated growth regime. We find that this condition is met already at z close to 18 in the highly biased regions in which quasars are born. The key parameter allowing the formation of SMBHs by z=6-7 is the fraction of halos that can form heavy seeds: the minimum requirement is that f_heavy>0.001; SMBH as large as 2x10^10 Msol can be obtained when f_heavy approaches unity. Independently of f_heavy, the model produces a high-z stellar bulge-black hole mass relation which is steeper than the local one, implying that SMBHs formed before their bulge was in place. The formation of heavy seeds, allowed by the Lyman-Werner radiative feedback in the quasar-forming environment, is crucial to achieve a fast growth of the SMBH by merger events in the early phases of its evolution, i.e. z>7. The UV photon production is largely dominated by stars in galaxies, i.e. black hole accretion radiation is sub-dominant. Interestingly, we find that the final mass of light BHs and of the SMBH in the quasar is roughly equal by z=6; by the same time only 19% of the initial baryon content has been converted into stars. The SMBH growth is dominated at all epochs z > 7.2 by mergers (exceeding accretion by a factor 2-50); at later times accretion becomes by far the most important growth channel. We finally discuss possible shortcomings of the model." @default.
• W3121885757 created "2021-02-01" @default.
• W3121885757 creator A5055387284 @default.
• W3121885757 creator A5070191867 @default.
• W3121885757 creator A5084155179 @default.
• W3121885757 date "2012-03-20" @default.
• W3121885757 modified "2023-10-14" @default.
• W3121885757 title "Supermassive black hole ancestors" @default.
• W3121885757 cites W1632875404 @default.
• W3121885757 cites W1778491405 @default.
• W3121885757 cites W1821429365 @default.
• W3121885757 cites W1883916103 @default.
• W3121885757 cites W1892333491 @default.
• W3121885757 cites W1939384555 @default.
• W3121885757 cites W1967957775 @default.
• W3121885757 cites W1975627161 @default.
• W3121885757 cites W1975840173 @default.
• W3121885757 cites W1980243102 @default.
• W3121885757 cites W1985841269 @default.
• W3121885757 cites W1989436099 @default.
• W3121885757 cites W1998577648 @default.
• W3121885757 cites W2005411300 @default.
• W3121885757 cites W2014720123 @default.
• W3121885757 cites W2019771205 @default.
• W3121885757 cites W2026132224 @default.
• W3121885757 cites W2040788677 @default.
• W3121885757 cites W2044688893 @default.
• W3121885757 cites W2057490476 @default.
• W3121885757 cites W2057617069 @default.
• W3121885757 cites W2073510197 @default.
• W3121885757 cites W2075612026 @default.
• W3121885757 cites W2077678988 @default.
• W3121885757 cites W2080820021 @default.
• W3121885757 cites W2083870045 @default.
• W3121885757 cites W2084820236 @default.
• W3121885757 cites W2094564770 @default.
• W3121885757 cites W2134050590 @default.
• W3121885757 cites W2134253073 @default.
• W3121885757 cites W3045411735 @default.
• W3121885757 cites W3098221464 @default.
• W3121885757 cites W3098380947 @default.
• W3121885757 cites W3099360186 @default.
• W3121885757 cites W3099390226 @default.
• W3121885757 cites W3099428329 @default.
• W3121885757 cites W3100657090 @default.
• W3121885757 cites W3101092402 @default.
• W3121885757 cites W3101176483 @default.
• W3121885757 cites W3101982976 @default.
• W3121885757 cites W3102823774 @default.
• W3121885757 cites W3102937302 @default.
• W3121885757 cites W3103624770 @default.
• W3121885757 cites W3104090367 @default.
• W3121885757 cites W3104389387 @default.
• W3121885757 cites W3104416848 @default.
• W3121885757 cites W3104969347 @default.
• W3121885757 cites W3105643723 @default.
• W3121885757 cites W3105786752 @default.
• W3121885757 cites W3126142052 @default.
• W3121885757 cites W4300188841 @default.
• W3121885757 doi "https://doi.org/10.1111/j.1365-2966.2012.20743.x" @default.
• W3121885757 hasPublicationYear "2012" @default.
• W3121885757 type Work @default.
• W3121885757 sameAs 3121885757 @default.
• W3121885757 citedByCount "32" @default.
• W3121885757 countsByYear W31218857572012 @default.
• W3121885757 countsByYear W31218857572013 @default.
• W3121885757 countsByYear W31218857572014 @default.
• W3121885757 countsByYear W31218857572015 @default.
• W3121885757 countsByYear W31218857572016 @default.
• W3121885757 countsByYear W31218857572017 @default.
• W3121885757 countsByYear W31218857572018 @default.
• W3121885757 countsByYear W31218857572021 @default.
• W3121885757 countsByYear W31218857572023 @default.
• W3121885757 crossrefType "journal-article" @default.
• W3121885757 hasAuthorship W3121885757A5055387284 @default.
• W3121885757 hasAuthorship W3121885757A5070191867 @default.
• W3121885757 hasAuthorship W3121885757A5084155179 @default.
• W3121885757 hasBestOaLocation W31218857572 @default.
• W3121885757 hasConcept C10767094 @default.
• W3121885757 hasConcept C121332964 @default.
• W3121885757 hasConcept C125857072 @default.
• W3121885757 hasConcept C1276947 @default.
• W3121885757 hasConcept C135041427 @default.
• W3121885757 hasConcept C150846664 @default.
• W3121885757 hasConcept C173120059 @default.
• W3121885757 hasConcept C184665706 @default.
• W3121885757 hasConcept C2776401274 @default.
• W3121885757 hasConcept C44870925 @default.
• W3121885757 hasConcept C98444146 @default.
• W3121885757 hasConceptScore W3121885757C10767094 @default.
• W3121885757 hasConceptScore W3121885757C121332964 @default.
• W3121885757 hasConceptScore W3121885757C125857072 @default.
• W3121885757 hasConceptScore W3121885757C1276947 @default.
• W3121885757 hasConceptScore W3121885757C135041427 @default.
• W3121885757 hasConceptScore W3121885757C150846664 @default.
• W3121885757 hasConceptScore W3121885757C173120059 @default.
• W3121885757 hasConceptScore W3121885757C184665706 @default.
• W3121885757 hasConceptScore W3121885757C2776401274 @default.

• next