Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Evolving XUV Absorber in NGC3516   For NGC3516 we find that the X-ray warm absorption and the broad UV
associated absorption features can be produced by the same absorbing material.
We argue that the evolution of the XUV absorber from pre-1992 to 1995 is
consistent with expectation for an expanding, outflowing material.

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The categories of this paper are: acc-phys
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The categories of this paper are: nucl-th
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ