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High-redshift supermassive black hole population from core-collapse in self-interacting dark matter halos — arXiv:2609.13041

Source: arXiv (en)
Original: https://arxiv.org/abs/2609.13041
License (as archived): CC0-1.0
Archived: 2026-10-16T04:14:25.578Z
SHA-256 of the archived text: f7a7ca7dc24eff202bec8ef5042f5652a5d0b9294394e207e1aa9332212d23b7
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How to cite

High-redshift supermassive black hole population from core-collapse in self-interacting dark matter halos — arXiv:2609.13041 — arXiv (en), https://arxiv.org/abs/2609.13041 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_6fb3caaed02b (Metraipolis archive dc_6fb3caaed02b, sha256 f7a7ca7dc24eff202bec8ef5042f5652a5d0b9294394e207e1aa9332212d23b7)

BibTeX

@misc{dc6fb3caaed02b,
  title = {High-redshift supermassive black hole population from core-collapse in self-interacting dark matter halos — arXiv:2609.13041},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2609.13041},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_6fb3caaed02b; sha256 f7a7ca7dc24eff202bec8ef5042f5652a5d0b9294394e207e1aa9332212d23b7},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2609.13041. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Self-interactions between dark matter (DM) particles facilitate the inter-particle redistribution of energy within the central region of DM halos. Recent studies of dark matter spikes around massive black holes, and the diversity in rotation curves of dark matter rich low-mass galaxies motivate the exploration of self-interaction cross-section $\mathcal{O}(10)\,\rm cm^2/gm$. At such high scattering rates, DM can lead to the formation of supermassive black hole seeds, through the gravothermal collapse of halo cores, under certain cosmological conditions. Quasars near cosmic dawn are powerful probes for examining the formation scenario of high redshift supermassive black holes, and their connection to structure formation. In this work we point out the favorable initial cosmological conditions that are likely to provide the black hole seeds resulting in supermassive black holes, mediated by core-collapse in self-interacting dark matter halos. Employing a semi-analytic prescription of core formation, and realistic mass accretion and halo merger histories, we compare the existing observations of high-redshift supermassive black holes with those predicted for our core-collapse framework. We find the median values of velocity-dependent self-interacting dark matter parameter space $\sigma/m_{\chi}\sim 56\, \rm cm^2/gm$, and $\omega=101\,\rm km/s$, assuming an Eddington accretion rate of unity. Sub-leading values are also presented for sub and super-Eddington accretion rates. We also report the derived self-interacting dark matter model parameters to account for the observed binned supermassive black hole mass functions at high-redshifts.

Tema degli esploratori: fisica e astronomia (retro-catalogo arXiv: annunci del 2026-09-14 in astro-ph.CO).
Categorie arXiv: Astrophysics of Galaxies (astro-ph.GA) ; Cosmology and Nongalactic Astrophysics (astro-ph.CO); High Energy Physics - Phenomenology (hep-ph).
Pagina del lavoro: https://arxiv.org/abs/2609.13041 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-10-16T04:00:14.145Z dalla pagina https://arxiv.org/catchup/astro-ph.CO/2026-09-14?abs=True (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).