Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Resolving discrete pulsar spin-down states with current and future
  instrumentation   An understanding of pulsar timing noise offers the potential to improve the
timing precision of a large number of pulsars as well as facilitating our
understanding of pulsar magnetospheres. For some sources, timing noise is
attributable to a pulsar switching between two different spin-down rates
$(\dot{\nu})$. Such transitions may be common but difficult to resolve using
current techniques. In this work, we use simulations of $\dot{\nu}$-variable
pulsars to investigate the likelihood of resolving individual $\dot{\nu}$
transitions. We inject step-changes in the value of $\dot{\nu}$ with a wide
range of amplitudes and switching timescales. We then attempt to redetect these
transitions using standard pulsar timing techniques. The pulse arrival-time
precision and the observing cadence are varied. Limits on $\dot{\nu}$
detectability based on the effects such transitions have on the timing
residuals are derived. With the typical cadences and timing precision of
current timing programs, we find we are insensitive to a large region of
$\Delta \dot{\nu}$ parameter space which encompasses small, short timescale
switches. We find, where the rotation and emission states are correlated, that
using changes to the pulse shape to estimate $\dot{\nu}$ transition epochs, can
improve detectability in certain scenarios. The effects of cadence on $\Delta
\dot{\nu}$ detectability are discussed and we make comparisons with a known
population of intermittent and mode-switching pulsars. We conclude that for
short timescale, small switches, cadence should not be compromised when new
generations of ultra-sensitive radio telescopes are online.

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The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
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The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
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The categories of this paper are: q-bio
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The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: econ
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The categories of this paper are: q-fin
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The categories of this paper are: nucl-ex
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The categories of this paper are: supr-con
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The categories of this paper are: dg-ga
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The categories of this paper are: cond-mat
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The categories of this paper are: bayes-an