Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The first Suzaku observation of SGR 1806-20   The soft gamma-ray repeater SGR 1806-20 has been attracting a lot of
attention owing to the fact that in December 2004 it emitted the most powerful
giant flare ever observed. Here we present the results of the first Suzaku
observation of SGR 1806-20, that seems to have reached a state characterized by
a flux close to the pre-flare level and by a relatively soft spectrum. Despite
this, the source remained quite active, as testified by several short bursts
observed by Suzaku. We discuss the broadband spectral properties of SGR 1806-20
in the context of the magnetar model, considering its recent theoretical
developments.

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The categories of this paper are: chem-ph
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The categories of this paper are: nlin
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The categories of this paper are: atom-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga
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The categories of this paper are: quant-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: mtrl-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: nucl-th
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The categories of this paper are: solv-int
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The categories of this paper are: math-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: ao-sci
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The categories of this paper are: stat