Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A transient large-scale relativistic radio jet from GX 339-4   We report on the formation and evolution of a large-scale,
synchrotron-emitting jet from the black hole candidate and X-ray binary system
GX 339-4. In 2002 May, the source moved from a low/hard to a very high X-ray
state, contemporaneously exhibiting a very bright optically thin radio flare.
Further observations with the Australia Telescope Compact Array have tracked
the formation of a collimated structure extending to about 12 arcsec, with
apparent velocity greater than 0.9c. The luminosity of the outflow seems to be
rapidly decreasing; these observations confirm that transient large-scale jets
are likely to be common events triggered by X-ray state transitions in black
hole X-ray binaries.

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The categories of this paper are: hep-lat
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The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
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The categories of this paper are: adap-org
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The categories of this paper are: q-bio
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
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The categories of this paper are: funct-an
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The categories of this paper are: plasm-ph
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The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
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The categories of this paper are: dg-ga
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The categories of this paper are: supr-con