Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: First narrow-band search for continuous gravitational waves from known
  pulsars in advanced detector data   Spinning neutron stars asymmetric with respect to their rotation axis are
potential sources of continuous gravitational waves for ground-based
interferometric detectors. In the case of known pulsars a fully coherent
search, based on matched filtering, which uses the position and rotational
parameters obtained from electromagnetic observations, can be carried out.
Matched filtering maximizes the signal-to-noise (SNR) ratio, but a large
sensitivity loss is expected in case of even a very small mismatch between the
assumed and the true signal parameters. For this reason, {\it narrow-band}
analyses methods have been developed, allowing a fully coherent search for
gravitational waves from known pulsars over a fraction of a hertz and several
spin-down values. In this paper we describe a narrow-band search of eleven
pulsars using data from Advanced LIGO's first observing run. Although we have
found several initial outliers, further studies show no significant evidence
for the presence of a gravitational wave signal. Finally, we have placed upper
limits on the signal strain amplitude lower than the spin-down limit for 5 of
the 11 targets over the bands searched: in the case of J1813-1749 the spin-down
limit has been beaten for the first time. For an additional 3 targets, the
median upper limit across the search bands is below the spin-down limit. This
is the most sensitive narrow-band search for continuous gravitational waves
carried out so far.

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The categories of this paper are: q-bio
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
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The categories of this paper are: comp-gas
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
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The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn