EDP Sciences
Free Access
Issue
A&A
Volume 583, November 2015
Article Number A90
Number of page(s) 18
Section Astrophysical processes
DOI https://doi.org/10.1051/0004-6361/201525763
Published online 30 October 2015

Online material

Appendix A: Results from model UA1

In this section we show results from model UA1. These can be compared to those results for UB1 as found in the main text.

thumbnail Fig. A.1

Contour plot of velocity contours evaluated in Boyer-Lindquist coordinates for a uniform supersonic flow past a non-spinning black hole with flow parameters given by model UA1, evaluated at time t = 300M. The stagnation point is marked.

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thumbnail Fig. A.2

Contour plot of velocity for a supersonic flow with density perturbed by ϵρ = 0.2 past a black hole with spin a = 0.9 and flow parameters given by model UA1, evaluated at time t = 400M, with the axes in units of M.

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thumbnail Fig. A.3

Accretion regions for two supersonic models based on UA1. The solid line shows the accretion region for a = 0, ϵρ = 0, and the dashed line shows the accretion region for a = 0.9, ϵρ = 0.2.

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Appendix B: Mass accretion and shock-angle dependence

In this section we show details of how the mass accretion rates and shock-angles depend on the size of the density perturbation.

thumbnail Fig. B.1

Mass accretion rate against density perturbation for different spins. The wind direction is parallel to the equatorial plane of the black hole in all cases.

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thumbnail Fig. B.2

Mass accretion rates against density perturbation. The labels refer to the angle between the equatorial plane and the wind direction. a) Spin a = 0.5; b) Spin a = 0.9.

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thumbnail Fig. B.3

Shock angles against density perturbation, varying the spin of the black hole. The wind direction is in the equatorial plane of the black hole in all cases.

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thumbnail Fig. B.4

Shock-cone angles against density perturbation. The angles are all taken in the plane containing the wind direction and the y-axis. The data points above and below the axis correspond to the shock-angles above and below the wind-direction axis. The labels correspond to the angle between the equatorial plane of the black hole and the wind direction. a) Spin a = 0.5; b) Spin a = 0.9.

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© ESO, 2015

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