Multiband gravitational-wave event rates and stellar physics. (arXiv:1902.00021v1 [astro-ph.HE])
<a href="http://arxiv.org/find/astro-ph/1/au:+Gerosa_D/0/1/0/all/0/1">Davide Gerosa</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ma_S/0/1/0/all/0/1">Sizheng Ma</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Wong_K/0/1/0/all/0/1">Kaze W.K. Wong</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Berti_E/0/1/0/all/0/1">Emanuele Berti</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+OShaughnessy_R/0/1/0/all/0/1">Richard O'Shaughnessy</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Chen_Y/0/1/0/all/0/1">Yanbei Chen</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Belczynski_K/0/1/0/all/0/1">Krzysztof Belczynski</a>
Joint gravitational-wave detections of stellar-mass black-hole binaries by
ground- and space-based observatories will provide unprecedented opportunities
for fundamental physics and astronomy. We present a semi-analytic method to
estimate multiband event rates by combining selection effects of ground-based
interferometers (like LIGO/Virgo) and space missions (like LISA). We forecast
the expected number of multiband detections first by using information from
current LIGO/Virgo data, and then through population synthesis simulations of
binary stars. We estimate that few to tens of LISA detections can be used to
predict mergers detectable on the ground. Conversely, hundreds of events could
potentially be extracted from the LISA data stream using prior information from
ground detections. In general, the merger signal of binaries observable by LISA
is strong enough to be unambiguously identified by both current and future
ground-based detectors. Therefore third-generation detectors will not increase
the number of multiband detections compared to LIGO/Virgo. We use population
synthesis simulations to explore some of the stellar physics that could be
constrained with multiband events, and we show that specific formation pathways
might be overrepresented in multiband events compared to ground-only
detections.
Joint gravitational-wave detections of stellar-mass black-hole binaries by
ground- and space-based observatories will provide unprecedented opportunities
for fundamental physics and astronomy. We present a semi-analytic method to
estimate multiband event rates by combining selection effects of ground-based
interferometers (like LIGO/Virgo) and space missions (like LISA). We forecast
the expected number of multiband detections first by using information from
current LIGO/Virgo data, and then through population synthesis simulations of
binary stars. We estimate that few to tens of LISA detections can be used to
predict mergers detectable on the ground. Conversely, hundreds of events could
potentially be extracted from the LISA data stream using prior information from
ground detections. In general, the merger signal of binaries observable by LISA
is strong enough to be unambiguously identified by both current and future
ground-based detectors. Therefore third-generation detectors will not increase
the number of multiband detections compared to LIGO/Virgo. We use population
synthesis simulations to explore some of the stellar physics that could be
constrained with multiband events, and we show that specific formation pathways
might be overrepresented in multiband events compared to ground-only
detections.
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