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Characterizing the sensitivity of isolated continuous gravitational wave searches to binary orbits

MPS-Authors
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Singh,  Avneet
Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Papa,  Maria Alessandra
Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons230128

Dergachev,  Vladimir
Searching for Continuous Gravitational Waves, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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1904.06325.pdf
(Preprint), 7MB

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Citation

Singh, A., Papa, M. A., & Dergachev, V. (2019). Characterizing the sensitivity of isolated continuous gravitational wave searches to binary orbits. Physical Review D, 100(2): 024058.


Cite as: https://hdl.handle.net/21.11116/0000-0003-6810-6
Abstract
Broadband all-sky searches for continuous gravitational waves (CW) from
isolated neutron stars typically yield a number of significant candidates that
are discarded through hierarchical semi-coherent and coherent follow-up
searches. However, these searches target purely isolated sources and do not
take into account possible phase modulations to the signals due to companion
objects in binary orbits. If the source object is in a binary orbit, the
signal-to-noise ratio (SNR) of a signal will diminish due to the mismatch
between the signal waveform and the template waveform used in the search. In
this paper, we investigate the sensitivity of CW searches to signals from
sources in binary systems over an exhaustive range of binary orbits. We use
Monte-Carlo simulations to constrain the ranges of binary orbital parameters
that leave a CW signal from a source in a binary orbit visible in a search for
signals from an isolated source (isolated searches), and consequently tighten
the parameter space explorable with dedicated searches for signals from sources
in binary systems (binary searches).