The properties of primordially-seeded black holes and their hosts in the first billion years: implications for JWST

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Table 1.

Free parameters used in PHANES (column 1), their symbols (column 2) and the values used in this work (column 3).

Parameter	Symbol	Value
PBH mass spectrum slope	α	2, 3
Black hole spin	s	0, +1, −1
Spin-dependent radiative efficiency of black hole accretion	ϵ	0.057(s = 0),0.037(s = −1),0.42(s = +1)
Fraction of AGN energy coupling to gas	$f_{BH}^{w}$ $f_{\mathrm{BH}}^{\mathrm{w}}$	10⁻³
Fraction of Eddington rate for BH accretion	f_Edd	0.25(s = 0);1.0(s = −1, +1)
Fraction of SNII energy coupling to gas	$f_{sf}^{w}$ $f_{\mathrm{sf}}^{\mathrm{w}}$	10⁻²

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