Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Delayed X-Ray Afterglows from Obscured Gamma-Ray Bursts in Star-Forming
  Regions   For Gamma-Ray Bursts occurring in dense star-forming regions, the X-ray
afterglow behavior minutes to days after the trigger may be dominated by the
small-angle scattering of the prompt X-ray emission off dust grains. We give a
simple illustrative model for the X-ray light curves at different X-ray
energies, and discuss possible implications. A bump followed by a steeper decay
in soft X-rays is predicted for bursts which are heavily obscured in the
optical.

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The categories of this paper are: eess
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
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The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
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The categories of this paper are: econ
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The categories of this paper are: dg-ga
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The categories of this paper are: adap-org
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The categories of this paper are: atom-ph
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The categories of this paper are: supr-con
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The categories of this paper are: solv-int
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The categories of this paper are: q-fin
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The categories of this paper are: q-alg