Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A disk-corona model for low/hard state of black hole X-ray binaries   A disk-corona model for fitting low/hard (LH) state of associated steady jet
of black hole X-ray binaries (BHXBs) is proposed based on the large-scale
magnetic field configuration of the coexistence of the Blandford-Znajek (BZ)
and Blandford-Payne (BP) processes,where the magnetic field configuration for
the BP process is determined by the requirement of energy conversion from
Poynting energy flux into kinetic energy flux in the jet. It is found that
corona current is crucial to guarantee the consistency of the jet launching
from accretion disk. The relative importance of the BZ to BP processes in
powering jets from black hole accretion disk is discussed, and the LH state of
several BHXBs is fitted based on our model.In addition, we suggest that
magnetic field configuration could be regarded as the second parameter for
governing the state transition of BHXBs.

23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
1
The categories of this paper are: cs
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg