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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…
FOREVER22: galaxy formation in protocluster regions
Hidenobu Yajima, Makito Abe, Sadegh Khochfar +14
We present results from a new cosmological hydrodynamics simulation campaign of protocluster (PC) regions, FOREVER22: FORmation and EVolution of galaxies in Extremely-overdense Reg…
Mapping the inhomogeneous Universe with Standard Sirens: Degeneracy between inhomogeneity and modified gravity theories
Marios Kalomenopoulos, Sadegh Khochfar, Jonathan Gair +1
The detection of gravitational waves (GWs) and an accompanying electromagnetic (E/M) counterpart have been suggested as a future probe for cosmology and theories of gravity. In thi…
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…
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…
Calibration of a star formation and feedback model for cosmological simulations with Enzo
Boon Kiat Oh, Britton D. Smith, John A. Peacock +1
We present results from seventy-one zoom simulations of a Milky Way-sized (MW) halo, exploring the parameter space for a widely-used star formation and feedback model in the {\tt E…