Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Accretion Disc-Jet Couplings in X-ray Binaries   When the matter from a companion star is accreted towards the central compact
accretor, i.e. a black hole (BH) or a neutron star (NS), an accretion disc and
a jet outflow will form, providing bight X-ray and radio emission, which is
known as X-ray binaries (XRBs). In the low/hard state, there exist disc-jet
couplings in XRBs, but it remains uncertain whether the jet power comes from
the disc or the central accretor. Moreover, BHXRBs have different properties
compared with NSXRBs: quiescent BHXRBs are typically two to three orders of
magnitude less luminous than NSXRBs in X-ray, whereas BHXRBs are more radio
loud than NSXRBs. In observations, an empirical correlation has been
established between radio and X-ray luminosity, $L_{\rm R} \propto L_{\rm
X}^b$, where $b\sim 0.7$ for BHXRBs and $b \sim 1.4$ for non-pulsating NSXRBs.
However, there are some outliers of BHXRBs showing unusually steep correlation
as NSXRBs at higher luminosities. In this work, under the assumption that the
origin of jet power is related to the internal energy of the inner disc, we
apply our magnetized, radiatively efficient thin disc model and the well-known
radiatively inefficient accretion flow model to NSXRBs and BHXRBs. We find that
the observed radio/X-ray correlations in XRBs can be well understood by the
disc-jet couplings.

9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg