Science with TianQin: Preliminary Results on Massive Black Hole Binaries. (arXiv:1902.04423v1 [astro-ph.HE])
<a href="http://arxiv.org/find/astro-ph/1/au:+Wang_H/0/1/0/all/0/1">Hai-Tian Wang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Jiang_Z/0/1/0/all/0/1">Zhen Jiang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Sesana_A/0/1/0/all/0/1">Alberto Sesana</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Barausse_E/0/1/0/all/0/1">Enrico Barausse</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Huang_S/0/1/0/all/0/1">Shun-Jia Huang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Wang_Y/0/1/0/all/0/1">Yi-Fan Wang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Feng_W/0/1/0/all/0/1">Wen-Fan Feng</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Wang_Y/0/1/0/all/0/1">Yan Wang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Hu_Y/0/1/0/all/0/1">Yi-Ming Hu</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Mei_J/0/1/0/all/0/1">Jianwei Mei</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Luo_J/0/1/0/all/0/1">Jun Luo</a>
We investigate the prospects of detecting gravitational waves from coalescing
massive black hole binaries in the Universe with the TianQin observatory, a
space-based gravitational wave interferometer proposed to be launched in the
2030s. To frame the scientific scope of the mission, in this paper we carry out
a preliminary estimation of the signal-to-noise ratio, detection rate and
parameter estimation precision of the massive black hole binaries detectable by
TianQin. In order to make our results as robust as possible, we consider
several models of the growth history of massive black holes, exploring the
effect of some key astrophysical prescriptions as well the impact of the
employed computational methods. In the most optimistic model, TianQin can
detect as many as $sim$ 60 mergers per year. If TianQin detects a merger at
redshift of 15, it will be capable of estimating its luminosity distance to
within an accuracy of 10%; for a nearby event at redshift $sim$ 2, TianQin can
issue early warnings 24 hours before coalescence, with a timing accuracy of
around an hour and a sky localization ability of $sim$ 10 square degrees, thus
enabling multi-messenger observations.
We investigate the prospects of detecting gravitational waves from coalescing
massive black hole binaries in the Universe with the TianQin observatory, a
space-based gravitational wave interferometer proposed to be launched in the
2030s. To frame the scientific scope of the mission, in this paper we carry out
a preliminary estimation of the signal-to-noise ratio, detection rate and
parameter estimation precision of the massive black hole binaries detectable by
TianQin. In order to make our results as robust as possible, we consider
several models of the growth history of massive black holes, exploring the
effect of some key astrophysical prescriptions as well the impact of the
employed computational methods. In the most optimistic model, TianQin can
detect as many as $sim$ 60 mergers per year. If TianQin detects a merger at
redshift of 15, it will be capable of estimating its luminosity distance to
within an accuracy of 10%; for a nearby event at redshift $sim$ 2, TianQin can
issue early warnings 24 hours before coalescence, with a timing accuracy of
around an hour and a sky localization ability of $sim$ 10 square degrees, thus
enabling multi-messenger observations.
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