Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The radio colour-colour diagram of Van der Laan bubbles - an application
  to SS433   A radio "colour-colour" diagram is defined in order to determine the
evolutionary state of synchrotron-emitting plasma bubbles that are ejected
during outbursts in microquasars. We establish the colour-colour diagram for
the plasmons of SS433 observed on 18 April 1998 using VLBI observations. We
show that the radio plasmons are not consistent with a simple expanding sphere
of plasmon. This may indicate that in-situ particle acceleration is taking
place away from the central engine.

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The categories of this paper are: chem-ph
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The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
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The categories of this paper are: supr-con
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The categories of this paper are: nucl-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: acc-phys
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
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The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
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The categories of this paper are: math-ph
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The categories of this paper are: cmp-lg