Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Infrared and Optical Detectability of Dyson Spheres at White Dwarf Stars   It has been hypothesized that advanced technological civilizations will
construct giant space colonies and supporting infrastructures to orbit about
their home stars. With data from recent satellites that operate at infrared and
optical wavelengths (Spitzer, WISE, TESS, Kepler), in company with a few modest
assumptions, it is now possible to begin to constrain observationally the
frequency of such space-based civilizations in our Milky Way Galaxy.

29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
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The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
19
The categories of this paper are: eess