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Spectral energy distributions of selfgravitating QSO discs

3 Pith papers cite this work. Polarity classification is still indexing.

3 Pith papers citing it
abstract

We calculate spectral energy distributions (SEDs) of steady accretion discs at high accretion rates, as appropriate for bright QSOs, under the assumption that the outer parts are heated sufficiently to maintain marginal gravitational stability, presumably by massive stars formed within the disc. The SED is independent of the nature of these auxiliary sources if their inputs are completely thermalized. Standard assumptions are made for angular momentum transport, with an alpha parameter less than unity. With these prescriptions, the luminosity of the disc is sensitive to its opacity, in contrast to standard discs powered by release of orbital energy alone. Compared to the latter, our discs have a broader SED, with a second peak in the near-infrared that is energetically comparable to the blue bump. The energy in the second peak increases with the outer radius of the disc, provided that the accretion rate is constant with radius. By comparing our computed SEDs with observed ones, we limit the outer radius of the disc to be less than 10^5 Schwarzschild radii, or about one parsec, in a typical QSO. We also discuss some properties of our minimum-Q discs in the regions where auxiliary heating is dominant (10^3-10^5 Schwarzschild radii).

years

2026 2 2025 1

verdicts

UNVERDICTED 3

representative citing papers

Self-acceleration of Hardening Binaries

astro-ph.GA · 2026-05-01 · unverdicted · novelty 7.0

Hardening binaries experience deterministic self-acceleration of their center of mass, induced precession, and plane rotation in uniform isotropic media, driving outward spiraling and eccentricity growth in all cases rather than circularization.

citing papers explorer

Showing 3 of 3 citing papers.

  • Self-acceleration of Hardening Binaries astro-ph.GA · 2026-05-01 · unverdicted · none · ref 82

    Hardening binaries experience deterministic self-acceleration of their center of mass, induced precession, and plane rotation in uniform isotropic media, driving outward spiraling and eccentricity growth in all cases rather than circularization.

  • Thick Disks, Thin Hopes: Suppressed Capture and Merger Rates in AGN astro-ph.HE · 2026-01-05 · unverdicted · none · ref 10 · internal anchor

    AGN disk capture and merger rates scale as (H/R)^{-8} and drop by 10-20 orders of magnitude in thick magnetically supported disks compared to thin thermal disks.

  • A "Black Hole Star" Reveals the Remarkable Gas-Enshrouded Hearts of the Little Red Dots astro-ph.GA · 2025-03-20 · unverdicted · none · ref 61 · internal anchor

    A source 660 million years after the Big Bang is interpreted as a black hole star with a dust-free dense gas atmosphere, implying Little Red Dots have black hole masses overestimated by orders of magnitude.