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Black hole supernovae (BHSNe), the term we use for core-collapse events in which black hole (BH) formation occurs after shock revival but before the explosion is complete, have emerged as a natural outcome of multidimensional simulations as…

High Energy Astrophysical Phenomena · Physics 2026-05-05 Oliver Eggenberger Andersen , Evan O'Connor , Liubov Kovalenko , Haakon Andresen , Sean M. Couch

We study the growth of massive black holes (BH) in galaxies using smoothed particle hydrodynamic simulations of major galaxy mergers with new implementations of BH accretion and feedback. The effect of BH accretion on gas in its host galaxy…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Jackson DeBuhr , Eliot Quataert , Chung-Pei Ma

This is the second paper in a series aimed at modeling the black hole (BH) mass function, from the stellar to the (super)massive regime. In the present work we focus on (super)massive BHs and provide an ab-initio computation of their mass…

Astrophysics of Galaxies · Physics 2022-08-03 A. Sicilia , A. Lapi , L. Boco , F. Shankar , D. M. Alexander , V. Allevato , C. Villforth , M. Massardi , M. Spera , A. Bressan , L. Danese

We study the mass assembly and spin evolution of supermassive black holes (BHs) across cosmic time as well as the impact of gravitational recoil on the population of nuclear and wandering black holes (wBHs) by using the semi-analytical…

We investigate the imprints of memory-burdened primordial black holes (PBH) on the global 21 cm signal during the cosmic dawn. Recent studies reopened the possibility of a mass window of PBHs as a compelling candidate for dark matter,…

Cosmology and Nongalactic Astrophysics · Physics 2025-12-09 Priyanka Sarmah , Kingman Cheung

We address the correlations of black hole (BH) mass with four different host-galaxy properties from eleven existing data sets. To guide theoretical understanding, we first try to quantify the tightness of the intrinsic correlations. Given…

Astrophysics · Physics 2009-11-13 Gregory S. Novak , S. M. Faber , Avishai Dekel

The \textit{memory burden} effect, the idea that the amount of information stored within a system contributes to its stabilization, is particularly relevant for systems with a large information storage capacity, such as black holes. In…

High Energy Astrophysical Phenomena · Physics 2025-08-01 Michael Zantedeschi , Luca Visinelli

Motivated by the recent detection by WMAP of a large optical depth to Thomson scattering -- implying a very early reionization epoch -- we assess a scenario where the universe was reionized by `miniquasars' powered by intermediate-mass…

Astrophysics · Physics 2008-11-26 Piero Madau , Martin J. Rees , Marta Volonteri , Francesco Haardt , S. Peng Oh

Central supermassive black holes (SMBHs) are a ubiquitous feature of locally-observed galaxies, and ample evidence suggests that the growth of SMBHs and their host galaxies is closely linked. However, in the event of a merger,…

Cosmology and Nongalactic Astrophysics · Physics 2011-09-30 Laura Blecha , Thomas J. Cox , Abraham Loeb , Lars Hernquist

We explore structure formation in the dark ages ($z\sim 30-6$) using two well-known methods for initializing cosmological $N$-body simulations. Overall, both the Zel'dovich approximation (\za) and second order Lagrangian perturbation theory…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Kelly Holley-Bockelmann , John H. Wise , Manodeep Sinha

With the advent of gravitational wave astronomy, searching for gravitational wave echoes from black holes (BHs) is becoming an interesting probe of their quantum nature near their horizons. Newborn BHs may be strong emitters of echoes, as…

General Relativity and Quantum Cosmology · Physics 2020-07-22 Naritaka Oshita , Daichi Tsuna , Niayesh Afshordi

Nuclear star clusters surrounding supermassive black holes (SMBHs) in galactic nuclei contain large numbers of stars, black holes (BHs) and neutron stars (NSs), a fraction of which are likely to form binaries. These binaries were suggested…

Astrophysics of Galaxies · Physics 2019-06-19 Giacomo Fragione , Evgeni Grishin , Nathan W. C. Leigh , Hagai. B. Perets , Rosalba Perna

Quasars powered by massive black holes (BHs) with mass estimates above a billion solar masses have been identified at redshift 6 and beyond. The existence of such BHs requires almost continuous growth at the Eddington limit for their whole…

(Abridged for arXiv)We investigate the properties of halos, galaxies and blackholes to z=0 in the high resolution hydrodynamical simulation MassiveBlack-II (MBII) which evolves a LCDM cosmology in a comoving volume Vbox=100(Mpc/h)^3. MBII…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-18 Nishikanta Khandai , Tiziana Di Matteo , Rupert Croft , Stephen M. Wilkins , Yu Feng , Evan Tucker , Colin DeGraf , Mao-Sheng Liu

We study the population of supermassive black holes (SMBHs) and their effects on massive central galaxies in the IllustrisTNG cosmological hydrodynamical simulations of galaxy formation. The employed model for SMBH growth and feedback…

Dwarf galaxies are ideal laboratories to probe the interplay between galaxy formation and the growth of black holes (BHs) in the early Universe. Mounting observational evidence reveals the presence of BHs in low-mass galaxies across cosmic…

Astrophysics of Galaxies · Physics 2026-03-13 Giulia Ortame , Martin A. Bourne , Sophie Koudmani , Debora Sijacki , Francesco D'Eugenio , Roberto Maiolino

In this paper we provide predictions for the BH population that would be observable with planned JWST surveys at $5 \le z \le 15$. We base our study on the recently developed Cosmic Archaeology Tool (CAT), which allows us to model BH seeds…

Astrophysics of Galaxies · Physics 2023-01-04 Alessandro Trinca , Raffaella Schneider , Roberto Maiolino , Rosa Valiante , Luca Graziani , Marta Volonteri

The growth of a supermassive black hole (BH) is determined by how much gas the host galaxy is able to feed it, which in turn is controlled by the cosmic environment, through galaxy mergers and accretion of cosmic flows that time how…

Astrophysics of Galaxies · Physics 2015-08-06 Yohan Dubois , Marta Volonteri , Joseph Silk , Julien Devriendt , Adrianne Slyz , Romain Teyssier

We use a physically motivated semi-analytic model, based on the mass function of dark matter halos, to predict the number of radio-loud quasars as a function of redshift and luminosity. Simple models in which the central BH mass scales with…

Astrophysics · Physics 2009-11-10 Zoltan Haiman , Eliot Quataert , Geoffrey C. Bower

We investigate the abundance of Super-Massive Black Hole (SMBH) seeds in primordial galaxy halos. We explore the assumption that dark matter halos outgrowing a critical halo mass M_c have some probability p of having spawned a SMBH seed.…

Astrophysics of Galaxies · Physics 2019-04-03 Johannes Buchner , Ezequiel Treister , Franz E. Bauer , Lia F. Sartori , Kevin Schawinski