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Close Pulsar Pairs See Dark Matter Substructure through the Gravitational-Wave Background

Cherukupalli, Abhiram et al.
arXiv (All) · Papers
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cosmology-and-nongalactic-astrophysics
Pulsar timing arrays detect signals from dark matter substructure, but a nanohertz gravitational-wave background (GWB) severely degrades their sensitivity. We show that timing pulsar pairs separated by sub-parsec distances avoids this degradation. The GWB imprints nearly the same perturbation on bot
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