Feedback-regulated seed black hole growth in star-forming molecular clouds and galactic nuclei

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Volume 691 (November 2024)

A&A, 691 (2024) A24

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Table 2.

Free parameters in our BH feedback subgrid model.

Physical process	Quantity	Fiducial setup	Variations
Disk mass depletion	α	0.1	0.01, 0.1, 1
Disk mass depletion	sup(M_d/M_BH)	10	1, 10

Radiative feedback	$ϵ_{r} \equiv L_{bol} / ({\dot{M}}_{BH} c^{2})$ $\epsilon_{\mathrm{r}}\equiv L_{\mathrm{bol}}/(\dot{M}_{\mathrm{BH}}c^2)$	Variable: Madau et al. (2014)	10⁻⁹–0.1, Watarai et al. (2000)
Radiative feedback	Z/Z_⊙	1	1, 10⁻², 10⁻⁴, 10⁻⁶

Mechanical feedback	$ϵ_{w} \equiv L_{w} / ({\dot{M}}_{BH, 0} c^{2})$ $\epsilon_{\mathrm{w}} \equiv L_{\mathrm{w}}/(\dot{M}_{\mathrm{BH,0}} c^2)$	10⁻⁶ (10⁻³) for 10⁶ M_⊙ (10⁸ M_⊙) complex	10⁻⁸–0.1, Hu et al. (2022)
Mechanical feedback	$η_{w} \equiv {\dot{M}}_{w} / {\dot{M}}_{BH, 0}$ $\eta_{\mathrm{w}} \equiv \dot{M}_{\mathrm{w}}/\dot{M}_{\mathrm{BH,0}}$	1	1, 10, 100

Cosmic-ray feedback	$ϵ_{CR} \equiv L_{CR} / {\dot{M}}_{BH, 0}$ $\epsilon_{\mathrm{CR}}\equiv L_{\mathrm{CR}}/\dot{M}_{\mathrm{BH,0}}$	0	10⁻⁸–0.1

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