Massive Black Hole Binaries and Where to Find Them with Dual Detector Networks. (arXiv:2105.02943v2 [gr-qc] UPDATED)

Massive Black Hole Binaries and Where to Find Them with Dual Detector Networks. (arXiv:2105.02943v2 [gr-qc] UPDATED)
<a href="http://arxiv.org/find/gr-qc/1/au:+Shuman_K/0/1/0/all/0/1">Kevin J. Shuman</a>, <a href="http://arxiv.org/find/gr-qc/1/au:+Cornish_N/0/1/0/all/0/1">Neil J. Cornish</a>

A single space-based gravitational wave detector will push the boundaries of
astronomy and fundamental physics. Having a network of two or more detectors
would significantly improve source localization. Here we consider how dual
networks of space-based detectors would improve parameter estimation of massive
black hole binaries. We consider two scenarios: a network comprised of the
Laser Interferometer Space Antenna (LISA) and an additional LISA-like
heliocentric detector (e.g. Taiji); and a network comprised of LISA with an an
additional geocentric detector (e.g. TianQin). We use Markov chain Monte Carlo
techniques and Fisher matrix estimates to explore the impact of a two detector
network on sky localization and distance determination. The impact on other
source parameters is also studied. With the addition of a Taiji or TianQin, we
find orders of magnitude improvements in sky localization for the more massive
MBHBs, while also seeing improvements for lower mass systems, and for other
source parameters.

A single space-based gravitational wave detector will push the boundaries of
astronomy and fundamental physics. Having a network of two or more detectors
would significantly improve source localization. Here we consider how dual
networks of space-based detectors would improve parameter estimation of massive
black hole binaries. We consider two scenarios: a network comprised of the
Laser Interferometer Space Antenna (LISA) and an additional LISA-like
heliocentric detector (e.g. Taiji); and a network comprised of LISA with an an
additional geocentric detector (e.g. TianQin). We use Markov chain Monte Carlo
techniques and Fisher matrix estimates to explore the impact of a two detector
network on sky localization and distance determination. The impact on other
source parameters is also studied. With the addition of a Taiji or TianQin, we
find orders of magnitude improvements in sky localization for the more massive
MBHBs, while also seeing improvements for lower mass systems, and for other
source parameters.

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