Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Microquasars in the low/hard state: strong coronae, compact jets, and
  the high frequency variability   We apply a model of magnetically dominated coronae above standard accretion
discs to the low/hard state of galactic black holes. When the disc-corona
coupling is accounted for self-consistently assuming that magneto-rotational
instability is at work in the disc, and that the corona is generated by buoyant
escape of disc magnetic structures, then the model predicts powerful, X-ray
emitting coronae at low accretion rates. A main consequence is discussed: the
possibility that the corona itself is the launching site of powerful, MHD
driven jets/outflows. This depends crucially of the coronal scaleheight.
Finally, we present the first radial profiles of a corona a different accretion
rates, and discuss their implications for high frequency variability.

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The categories of this paper are: physics
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
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The categories of this paper are: hep-th
18
The categories of this paper are: econ
16
The categories of this paper are: stat
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The categories of this paper are: hep-lat
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The categories of this paper are: eess
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
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The categories of this paper are: nlin
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The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg