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astro-ph.CO2024
Structure formation with primordial black holes: collisional dynamics, binaries, and gravitational waves
M. Sten Delos, Antti Rantala, Sam Young +1
Primordial black holes (PBHs) could compose the dark matter content of the Universe. We present the first simulations of cosmological structure formation with PBH dark matter that…
astro-ph.GA2024
The supermassive black hole merger driven evolution of high-redshift red nuggets into present-day cored early-type galaxies
Antti Rantala, Alexander Rawlings, Thorsten Naab +2
Very compact ( kpc) massive quiescent galaxies (red nuggets) are more abundant in the high-redshift Universe (-) than today. Their size evolution…
astro-ph.GA2024
MAGICS II. Seed black holes stripped of their surrounding stars do not sink
Yihao Zhou, Diptajyoti Mukherjee, Nianyi Chen +7
MBH seed mergers are expected to be among the loudest sources of gravitational waves detected by the Laser Interferometer Space Antenna (LISA), providing a unique window into the b…