Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Simultaneous single-pulse observations of radio pulsars: I. The
  polarization characteristics of PSR B0329+54   We present the first results from a programme of multi-frequency simultaneous
single pulse observations carried out as part of the European Pulsar Network.
We detail the main data analysis methods and apply them to simultaneous
observations of the strong pulsar B0329+54 at 1.4 and 2.7 GHz using the Jodrell
Bank and Effelsberg radio telescopes respectively. The pulses at different
frequencies are highly correlated in their total intensity, as seen in previous
experiments, and generally show consistent position angles of the linearly
polarized component. In contrast, the circularly polarized emission sometimes
shows clear differences between pulses received at different frequencies. These
results are unexpected and warrant further follow-up studies to interpret them
in the context of the intrinsic bandwidth of pulsar radiation.

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The categories of this paper are: ao-sci
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The categories of this paper are: nlin
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The categories of this paper are: atom-ph
3
The categories of this paper are: physics
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-ex
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The categories of this paper are: solv-int
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The categories of this paper are: cs
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The categories of this paper are: dg-ga
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The categories of this paper are: supr-con
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The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
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The categories of this paper are: funct-an
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The categories of this paper are: q-fin
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The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th