The low-end of the black hole mass function at cosmic dawn
Alessandro Trinca,Raffaella Schneider,Rosa Valiante,L. Graziani,Luca Zappacosta,Francesco Shankar +5 more
TLDR
In this paper , the authors investigated the early evolution of the first supermassive black holes (SMBHs) by constraining their distribution in mass and luminosity at z > 4, focusing on the poorly explored low-mass end of the nuclear black hole (BH) distribution down to z ' 4.Abstract:
Understanding the formation and growth of supermassive black holes (SMBHs) at high redshift represents a major challenge for theoretical models. In this work we investigate the early evolution of the first SMBHs by constraining their distribution in mass and luminosity at z > 4. In particular, we focus on the poorly explored low-mass end of the nuclear black hole (BH) distribution down to z ' 4, and explore its connection with the nature of the first BH seeds and the processes governing their mass growth. To this aim, we have developed CAT (Cosmic Archaeology Tool), a new semi-analytic model that describes the formation of the first stars and black holes in a self-consistent way and follows the co-evolution of nuclear BHs and their host galaxies for a representative population at z > 4. We find that current observational constraints favour models where the growth of BH seeds is Eddington limited and occurs at the Bondi-Hoyle-Lyttleton rate or where super-Eddington accretion occurs via a slim disk during gas rich galaxy mergers. The main difference between these two model variants lies at the low-end of the predicted mass and luminosity functions at 4 ≤ z ≤ 6, where a clear gap appears in the first model, reflecting the stunted growth of light BH seeds formed as remnants of the first stars. Detecting this signature will be extremely challenging even for the future generation of space observatories, such as JWST, Athena and Lynx.read more
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Public Release of A-SLOTH: Ancient Stars and Local Observables by Tracing Halos
Tilman Hartwig,Mattis Magg,Li-Hsin Chen,Yuta Tarumi,Volker Bromm,Simon C. O. Glover,Alexander P. Ji,Ralf S. Klessen,Muhammad Latif,Marta Volonteri,Naoki Yoshida +10 more
TL;DR: The a-sloth model as mentioned in this paper is based on dark matter merger trees that can either be generated based on Extended Press-Schechter theory or be imported from dark matter simulations, and applies analytical recipes for baryonic physics to model the formation of both metal-free and metal-poor stars and the transition between them.
Journal ArticleDOI
Origin of supermassive black holes in massive metal-poor protoclusters
Dominik R. G. Schleicher,B. Reinoso,Muhammad Latif,Ralf S. Klessen,Muñoz Vergara,Anish Das,P. Alister,V. B. D'iaz,P. Solar +8 more
TL;DR: In this paper , the mass of the central massive object, formed via collisions and gas accretion, considering the extreme cases of a logarithmically flat and a Salpeter-type initial mass function, was estimated.
Journal ArticleDOI
Seeking the growth of the first black hole seeds with JWST
Alessandro Trinca,Raffaella Schneider,Roberto Maiolino,Rosa Valiante,L. Graziani,Marta Volonteri +5 more
TL;DR: In this paper , the authors provided predictions for the BH population that would be observable with planned JWST surveys at 5 ≤ z ≤ 15, with JADES-Medium/Deep being capable of detecting the numerous BHs that populate the faint-end of the distribution, COSMOS-Web sampling a large enough area to detect the rarest brightest systems, and CEERS/PRIMER bridging the gap between these two regimes.
Journal ArticleDOI
Multi-flavour SMBH seeding and evolution in cosmological environments
TL;DR: In this article , the genesis and evolution of super-massive black hole (SMBH) seeds through different formation channels, from PopIII remnants to massive seeds, was modeled within the L-Galaxies semi-analytic code.
Journal ArticleDOI
The assembly of dusty galaxies at z ≥ 4: the build-up of stellar mass and its scaling relations with hints from early JWST data
C. Di Cesare,L. Graziani,Raffaella Schneider,Michele Ginolfi,A.L. Venditti,Paola Santini,Leslie K. Hunt +6 more
TL;DR: In this paper , a new suite of cosmological simulations performed with dustyGadget is introduced to interpret high-redshift data to investigate the comoving star formation history, the stellar mass density and a number of galaxy scaling relations.
References
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