Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Jets from the faintest black holes   The question whether quiescent black hole X-ray binaries are capable of
powering relativistic outflows is addressed by means of simultaneous
radio/X-ray observations of a nearby system steadily emitting X-rays below 1e-8
times the Eddington luminosity. The robust detection of a radio counterpart
suggests that a synchrotron emitting outflow is being powered by this system,
even though its degree of collimation remains unknown, and hard to investigate.
With the inclusion of the A0620-00 data, the non linear radio/X-ray correlation
for hard state black hole X-ray binaries appears to hold down to very low
quiescent luminosities. However, an increasing number of outliers is being
found at higher luminosities, questioning the universality of such correlation,
or at least its normalization.

27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics