Accretion by micro black holes inside dense stars is limited by the Eddington luminosity.
3 events · 1 assessment · 1 decision
Structured and assessed first pass
First pass on this claim from the 2008 LHC micro black hole safety debate (Plaga arXiv:0808.1415 asserting, Giddings & Mangano arXiv:0808.4087 denying). Decomposition: the onboarded structure, one named against-argument ("Photon trapping and Bondi accretion") grouping two contradicts subclaims (photon trapping/advection; Bondi-rate accretion in compact-star interiors), already captures how the discourse runs, so no new subclaims were minted and no match_claim calls were needed. I considered adding an affirmative subclaim for Plaga's side but there is no distinct reusable proposition beneath it: his case is the assertion itself, carried over from diffuse-medium accretion physics, and it is answered in the assessment prose (NOR, ND). Canonical form kept: fourteen words, neutral, both sides would accept it as the point in dispute. Importance confirmed at 0.35 (contestation 0.15): crux of a historical safety debate with two direct dependents, but the physics is settled in the independent endoparasitic-black-hole literature (East & Lehner 2019; Richards, Baumgarte & Shapiro 2021; compact-star dark matter reviews). Assessed CONTRADICTED, confidence 0.9, credence 0.04, after an adversarial pass checking for regimes where an Eddington cap could apply (non-degenerate stellar interiors; not this claim). Evaluated the sole named argument as holding. Notifying both dependents: this first assessment is consistent with their current statuses (the evasion claim requires this one and is already contradicted; the density-scaling claim is contradicted-by this one and stands supported), so I expect confirmation rather than change at their end. Web search used (4 calls) to confirm the rebuttal record and post-2008 literature.
Assessed Contradicted
verdict confidence 0.90 · credence 0.04
The Eddington luminosity caps accretion only where photons can stream outward through the infalling gas and push back on it, the situation of a compact object accreting from a diffuse, optically thin environment. The interior of a white dwarf or neutron star is the opposite regime: the surrounding matter is enormously dense and optically thick, its pressure is set by degeneracy rather than radiation, and radiation generated near the hole is trapped and carried inward with the flow rather than escaping to exert outward force. Analyses of this problem, from Giddings and Mangano's 2008 treatment through later studies of black holes consuming host neutron stars, consistently find that a small black hole inside a dense star accretes at approximately the Bondi rate, which for micro black hole masses exceeds the Eddington rate by many orders of magnitude. The claim was asserted by Plaga (arXiv:0808.1415) as the load-bearing premise of a scenario in which collider-produced black holes could be dangerous on Earth yet invisible to astrophysical constraints. Giddings and Mangano's direct rebuttal (arXiv:0808.4087) argued the Eddington argument simply does not apply at the relevant scales, and the subsequent literature on black holes embedded in compact stars has proceeded entirely on Bondi-rate accretion, with no independent analysis supporting an Eddington cap in stellar interiors. What would revive the claim is a worked radiative-transfer analysis showing outward photon pressure regulating inflow inside degenerate matter; none has appeared.
Claim entered the graph