Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gravitational waves from pulsars in the context of magnetic ellipticity   In one of our previous articles we have considered the role of a time
dependent magnetic ellipticity on pulsars' braking indices and on the putative
gravitational waves these objects can emit. Since only nine of more than 2000
known pulsars have accurately measured braking indices, it is of interest to
extend this study to all known pulsars, in particular to what concerns the
gravitational waves generation. To do so, as shown in our previous article, we
need to know some pulsars' observable quantities such as: periods and their
time derivatives, and estimated distances to the Earth. Moreover, we also need
to know the pulsars' masses and radii, for which, in here we are adopting
current fiducial values. Our results show that the gravitational wave amplitude
is at best $h \sim 10^{-28}$. This leads to a pessimistic prospect for the
detection of gravitational waves generated by these pulsars, even for Advanced
LIGO and Advanced Virgo, and the planned Einstein Telescope, whether the
ellipticity has magnetic origin.

2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
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The categories of this paper are: nlin
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The categories of this paper are: hep-ph
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org