Further clarification: The previous figure I had used for stopping distances related to slow-down of black holes to the non-relativistic regime, not to below the escape velocity in order to be trapped — hence the oversight. Column densities similar to WD are calculated to be capable of stopping 14 TeV MBH of up to 7 space-time dimensions, and are actually made clear in the G&M paper — fig 2 page 37 — no need to debate this point with CERN.

The implication of this of course is if one is to seek a safety assurance independent of Hawking Radiation theory, the WD safety assurance is only dependable where D<8, and up to 14 TeV energy levels. Hence one needs to rely on the NS safety assurance for such. As stated on another thread, I would like to see the criticisms in Alam Rahman’s paper — specifically of the NS safety assurance — taken into consideration at CERN/LSAG to confirm the NS safety assurance is not compromised by his findings in review of the G&M paper. However, I understand his paper is incomplete so I presume it was not presented./

About presuppositions made about very slow black holes having the same accretion rate as very fast ones in this paper — I think you refer to an earlier paper I wrote on relative flux… More significantly, an updated revision of the technical note linked above (rev 1.01, 17th May 2014, page 3 — remember to reload/refresh) captures a relevant oversight and as such suggests further analysis on the NS safety assurances to cover certain conditions:

“However – the WD safety assurance is only valid for lower orders of dimensions of MBH [5], and column densities required to stop the heaviest black holes (D>=8) exceed the stopping power of WD. To cover scenarios of MBH with D>=8, further analysis is required on the NS safety assurances [5][8].”

That is to say the WD safety assurance is not quite strong enough on its own as a safety assurance (E = 14 TeV) — it requires either the NS safety assurance also, or a verifiable HR.

Kind regards–
— Tom.