Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A radio technosignature search towards Proxima Centauri resulting in a
  signal-of-interest   The detection of life beyond Earth is an ongoing scientific endeavour, with
profound implications. One approach, known as the search for extraterrestrial
intelligence (SETI), seeks to find engineered signals (`technosignatures') that
indicate the existence technologically-capable life beyond Earth. Here, we
report on the detection of a narrowband signal-of-interest at ~982 MHz,
recorded during observations toward Proxima Centauri with the Parkes Murriyang
radio telescope. This signal, `BLC1', has characteristics broadly consistent
with hypothesized technosignatures and is one of the most compelling candidates
to date. Analysis of BLC1 -- which we ultimately attribute to being an unusual
but locally-generated form of interference -- is provided in a companion paper
(Sheikh et al., 2021). Nevertheless, our observations of Proxima Centauri are
the most sensitive search for radio technosignatures ever undertaken on a star
target.

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The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
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The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom