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October 5, 2025Open Access

Heavy seeds and the first black holes: Insights from the BRAHMA simulations

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Authors

ABAklant K. BhowmickLBLaura BlechaPTPaul Torrey

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Overview

BRAHMA simulations reveal the role of heavy seeds in black hole assembly, suggesting strong implications for AGN growth.

Key Points

  • BH assembly in extreme overdense regions is strongly influenced by heavy seed models and dynamics.
  • Accretion is suppressed at high redshifts, with mergers dominating for black hole growth by z > 9.
  • Simulations show that models with heavy seeds yield significant merger-driven growth of black holes by z ∼ 10.
  • Current estimates demand reduced AGN thermal feedback or shorter merger timescales to explain observed black hole mass ratios.

Cite This Study

Bhowmick et al. (2025) studied this question.

synapsesocial.com/papers/68e25382d6d66a53c24749f2https://doi.org/10.48550/arxiv.2510.01322
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