Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Outflow from super-Eddington flow: where it originates from and how much
  impact it gives?   It is widely believed that super-Eddington accretion flow can produce
powerful outflow, but where it originates from and how much mass and energy are
carried away to which directions? To answer to these questions, we newly
perform a large-box, two-dimensional radiation hydrodynamic simulation, paying
special attention lest the results should depend on adopted initial and
boundary conditions. We could achieve a quasi-steady state in an
unprecedentedly large range, $r=2~r_{\rm S}$-$600~r_{\rm S}$ (with $r_{\rm S}$
being the Schwarzschild radius) from the black hole. The accretion rate onto
the central $10 ~M_{\odot}$ black hole is $\dot{M}_{\rm BH} \sim 180 ~L_{\rm
Edd}/c^{2}$, whereas the mass outflow rate is ${\dot M}_{\rm outflow} \sim 24
~L_{\rm Edd}/c^2$ (where $L_{\rm Edd}$ and $c$ are the Eddington luminosity and
the speed of light, respectively). The ratio (${\dot M}_{\rm outflow}/{\dot
M}_{\rm BH} \sim 0.14$) is much less than those reported previously. By careful
inspection we find that most of outflowing gas which reach the outer boundary
originates from the region at $R\lesssim140~r_{\rm S}$, while gas at
$140~r_{\rm S}$-$230 ~r_{\rm S}$ forms failed outflow. Therefore, significant
outflow occurs inside the trapping radius $\sim 450 ~r_{\rm S}$. The mechanical
energy flux (or mass flux) reaches its maximum in the direction of $\sim
15^\circ$ ($\sim 80^\circ$) from the rotation axis. The total mechanical
luminosity is $L_{\rm mec}\sim 0.16~L_{\rm Edd}$, while the isotropic X-ray
luminosity varies from $L_{\rm X}^{\rm ISO}\sim 2.9~L_{\rm Edd}$, (for a
face-on observer) to $\sim 2.1~L_{\rm Edd}$ (for a nearly edge-on observer).
The power ratio is $L_{\rm mec}/L_{\rm X}^{\rm ISO}\sim 0.05$-$0.08$, in good
agreement with the observations of Ultra-Luminous X-ray sources surrounded by
optical nebulae.

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The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
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The categories of this paper are: funct-an
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
3
The categories of this paper are: physics
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The categories of this paper are: q-fin
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The categories of this paper are: nlin
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The categories of this paper are: hep-lat
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The categories of this paper are: gr-qc
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The categories of this paper are: nucl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: supr-con