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Magnetic fields in extreme primordial halos: turbulent collapse and implications for early quasar formation
V. B. Díaz, D. R. G. Schleicher, M. A. Latif +1
It is sometimes suggested that the most massive quasars at high redshift may have formed from rare high-sigma peaks in the cosmic density field. We explore here the evolution in a…
Constraints on dynamically-formed massive black holes in Little Red Dots from X-ray non-detections
M. Liempi, D. R. G. Schleicher, M. A. Latif +4
The existence of massive, compact galaxies (Little Red Dots, LRDs) at challenges early structure formation models, suggesting rapid stellar and black hole (BH) assembly.…
Massive black hole formation in Population III star clusters
B. Reinoso, M. A. Latif, D. R. G. Schleicher
The James Webb Space Telescope (JWST) has revealed a population of active galactic nuclei (AGNs) that challenge existing black hole (BH) formation models. These newly observed BHs…
Radio Emission From a 10.1 Black Hole in UHZ1
Daniel J. Whalen, Muhammad A. Latif, Mar Mezcua
The recent discovery of a 4 10 M black hole (BH) in UHZ1 at 10.3, just 450 Myr after the big bang, suggests that the seeds of the first quasars may hav…
Radio Emission from the First Quasars at 6-15
Muhammad A. Latif, Daniel J. Whalen, Mar Mezcua
Nearly 300 quasars have now been found at 6, including nine at 7. They are thought to form from the collapse of supermassive primordial stars to 10 - 10 M$_{\od…
Unveiling the contribution of Pop III stars in primeval galaxies at redshift
Shafqat Riaz, Tilman Hartwig, Muhammad A. Latif
Detection of the first stars has remained elusive so-far but their presence may soon be unveiled by upcoming JWST observations. Previous studies have not investigated the entire po…
Turbulent Cold Flows Gave Birth to the First Quasars
Muhammad A. Latif, Daniel J. Whalen, Sadegh Khochfar +2
How quasars powered by supermassive black holes (SMBHs) formed less than a billion years after the Big Bang is still one of the outstanding problems in astrophysics 20 years after…
Public Release of A-SLOTH: Ancient Stars and Local Observables by Tracing Halos
Tilman Hartwig, Mattis Magg, Li-Hsin Chen +8
The semi-analytical model A-SLOTH (Ancient Stars and Local Observables by Tracing Halos) is the first public code that connects the formation of the first stars and galaxies to obs…
Origin of supermassive black holes in massive metal-poor protoclusters
D. R. G. Schleicher, B. Reinoso, M. Latif +6
While large numbers of supermassive black holes have been detected at z>6, their origin is still essentially unclear. Numerical simulations have shown that the conditions for the c…
Radio Power from Direct-Collapse Black Holes
Daniel J. Whalen, Mar Mezcua, Samuel J. Patrick +2
Direct-collapse black holes (DCBHs) forming at 20 are currently the leading candidates for the seeds of the first quasars, over 200 of which have now been found at 6…
The Birth Mass Function of Pop III Stars
Muhammad A. Latif, Daniel Whalen, Sadegh Khochfar
Population III (Pop III) stars ended the cosmic Dark Ages and began early cosmological reionization and chemical enrichment. However, in spite of their importance to the evolution…
Radiation Hydrodynamical Simulations of the Birth of Intermediate-Mass Black Holes in the First Galaxies
Muhammad A. Latif, Sadegh Khochfar, Dominik Schleicher +1
The leading contenders for the seeds of quasars are direct-collapse black holes (DCBHs) forming in atomically-cooled halos at 20. However, the Lyman-Werner (LW) UV…
Formation of Pop II star clusters in the aftermath of a pair instability supernova
Muhammad A. Latif, Dominik Schleicher
Pop II stars formed a few hundred million years after the Big Bang were key drivers of cosmic reionization and building blocks of high redshift galaxies. How and when these stars f…
Inception of a first quasar at cosmic dawn
Muhammad A. Latif, Sadegh Khochfar
Earliest quasars at the cosmic dawn are powered by mass accretion onto supermassive black holes of a billion solar masses. Massive black hole seeds forming through the direct colla…
Radio Power from a Direct-Collapse Black Hole in CR7
Daniel J. Whalen, Mar Mezcua, Avery Meiksin +2
The leading contenders for the seeds of the first quasars are direct collapse black holes (DCBHs) formed during catastrophic baryon collapse in atomically-cooled halos at …
The Birth of Binary Direct-Collapse Black Holes
Muhammad A. Latif, Sadegh Khochfar, Daniel Whalen
Supermassive primordial stars forming during catastrophic baryon collapse in atomically-cooling halos at 15 - 20 may be the origin of the first quasars in the universe. Ho…
UV regulated star formation in high-redshift galaxies
Muhammad A. Latif, Sadegh Khochfar
The first galaxies forming a few hundred million years after the Big Bang are the key drivers of cosmic evolution and ideal laboratories to study theories of galaxy formation. We h…
Intermittent fragmentation and statistical variations during gas collapse in magnetised atomic cooling haloes
Philipp Grete, Muhammad A. Latif, Dominik R. G. Schleicher +1
Observations reveal the presence of supermassive black holes (SMBH) as early as ~700 million years after the Big Bang. Their formation path is still subject to current debate. We e…
Titans of the Early Universe: The Prato Statement on the Origin of the First Supermassive Black Holes
Tyrone E. Woods, Bhaskar Agarwal, Volker Bromm +30
In recent years, the discovery of massive quasars at z~7 has provided a striking challenge to our understanding of the origin and growth of supermassive black holes in the early Un…
Black hole formation via gas-dynamical processes
Muhammad A. Latif
Understanding the formation of earliest supermassive black holes is a question of prime astrophysical interest. In this chapter, we focus on the formation of massive black holes vi…
Early growth of typical high redshift black holes seeded by direct collapse
Muhammad A. Latif, Marta Volonteri, John H. Wise
Understanding the growth of high redshift massive black holes (MBHs) is a problem of great astrophysical interest. The most luminous quasars at are frequently observed but th…
Lyman-Werner Escape Fractions from the First Galaxies
Anna T. P. Schauer, Bhaskar Agarwal, Simon C. O. Glover +6
Direct collapse black holes forming in pristine, atomically-cooling haloes at may act as the seeds of supermassive black holes (BH) at high redshifts. In order to…
The impact of ionizing radiation on the formation of a supermassive star in the early Universe
Sunmyon Chon, Muhammad A. Latif
A massive primordial halo near an intensely star-forming galaxy may collapse into a supermassive star (SMS) and leave a massive black hole seed of about . To invest…
Formation of supermassive black hole seeds
Muhammad A. Latif, Andrea Ferrara
The detection of quasars at unveils the presence of supermassive black holes (BHs) of a few billion solar masses. The rapid formation process of these extreme objects remains…