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Coincident detection significance in multimessenger astronomy

MPG-Autoren
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Dent,  Thomas
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Eggenstein,  Heinz-Bernd
Searching for Continuous Gravitational Waves, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Nielsen,  Alex B.
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Prix,  Reinhard
Searching for Continuous Gravitational Waves, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Was,  Michal
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, Hannover, DE;

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Zhu,  Sylvia
Searching for Continuous Gravitational Waves, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Zitation

Ashton, G., Burns, E., Dal Canton, T., Dent, T., Eggenstein, H.-B., Nielsen, A. B., et al. (2018). Coincident detection significance in multimessenger astronomy. The Astrophysical Journal, 860(1): 6. doi:10.3847/1538-4357/aabfd2.


Zitierlink: https://hdl.handle.net/21.11116/0000-0000-3D2F-9
Zusammenfassung
We derive a Bayesian criterion for assessing whether signals observed in two
separate data sets originate from a common source. The Bayes factor for a
common vs. unrelated origin of signals includes an overlap integral of the
posterior distributions over the common source parameters. Focusing on
multimessenger gravitational-wave astronomy, we apply the method to the spatial
and temporal association of independent gravitational-wave and electromagnetic
(or neutrino) observations. As an example, we consider the coincidence between
the recently discovered gravitational-wave signal GW170817 from a binary
neutron star merger and the gamma-ray burst GRB 170817A: we find that the
common source model is enormously favored over a model describing them as
unrelated signals.