Searching for cross-correlation between stochastic gravitational-wave background and galaxy number counts

  title={Searching for cross-correlation between stochastic gravitational-wave background and galaxy number counts},
  author={Kate Ziyan Yang and Vuk Mandic and Claudia Scarlata and Sharan Banagiri},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
Advanced LIGO and Advanced Virgo have recently published the upper limit measurement of persistent directional stochastic gravitational wave background (SGWB) based on data from their first and second observing runs (O1 and O2). In this paper we investigate whether a correlation exists between this maximal likelihood SGWB map and the electromagnetic tracers of matter structure in the universe, such as galaxy number counts. The method we develop will improve the sensitivity of future searches… Expand
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