Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Swift Observations of Shock Evolution in RS Ophiuchi   Our \textit{Swift} observations of RS Oph form an unprecedented X-ray dataset
to undertake investigations of both the central source and the interaction of
the outburst ejecta with the circumstellar environment. Over the first month,
the XRT data are dominated by emission from rapidly evolving shocks. We discuss
the differences in derived parameters from those found for \textit{RXTE} at
early times and the evolution of the X-ray emission to much later times. It is
apparent that at late times several emission components are present. We find no
strong evidence of the proposed shock break-out in our data.

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The categories of this paper are: hep-ex
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The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
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The categories of this paper are: bayes-an
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The categories of this paper are: econ
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The categories of this paper are: patt-sol
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The categories of this paper are: acc-phys
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: gr-qc
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The categories of this paper are: physics
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The categories of this paper are: cs
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The categories of this paper are: q-fin
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The categories of this paper are: q-bio