Effects of proper motion of neutron stars on continuous gravitational-wave searches - INSPIRE

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Effects of proper motion of neutron stars on continuous gravitational-wave searches

P.B. Covas

Aug 3, 2020

10 pages

Published in:

Mon.Not.Roy.Astron.Soc. 500 (2020) 4, 5167-5176

Published: Dec 18, 2020

e-Print:

2008.00983 [astro-ph.IM]

DOI:

10.1093/mnras/staa3624 (publication)

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Abstract: (Oxford University Press)

All-sky and directed continuous gravitational-wave searches look for signals from unknown asymmetric rotating neutron stars or from neutron stars of unknown rotational frequency. These searches do not take into account the proper motion of the neutron star, assuming that the loss of signal-to-noise ratio caused by this is negligible and that no biases in parameter estimation are introduced. In this paper, we study the effect that proper motion has on continuous wave searches, and we show for what regions of parameter space (frequency, proper motion, sky position) and observation times this assumption may not be valid. We also calculate the relative uncertainty on the proper motion parameter estimation that these searches can achieve.

Note:

10 pages

gravitational waves
proper motions
stars: neutron

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