Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pre-DECIGO can get the smoking gun to decide the astrophysical or
  cosmological origin of GW150914-like binary black holes   Pre-DECIGO consists of three spacecraft arranged in an equilateral triangle
with 100km arm lengths orbiting 2000km above the surface of the earth. It is
hoped that the launch date will be in the late 2020s.
  Pre-DECIGO has one clear target: binary black holes (BBHs) like GW150914 and
GW151226. Pre-DECIGO can detect $\sim 30M_\odot-30M_\odot$ BBH mergers up to
redshift $z\sim 30$. The cumulative event rate is $\sim 1.8\times 10^{5}\,{\rm
events~yr^{-1}}$ in the Pop III origin model of BBHs like GW150914, and it
saturates at $z\sim 10$, while in the primordial BBH (PBBH) model, the
cumulative event rate is $ \sim 3\times 10^{4}\,{\rm events~ yr^{-1}}$ at
$z=30$ even if only $0.1\%$ of the dark matter consists of PBHs, and it is
still increasing at $z=30$. In the Pop I/II model of BBHs, the cumulative event
rate is $(3-10)\times10^{5}\,{\rm events~ yr^{-1}}$ and it saturates at $z \sim
6$. We present the requirements on orbit accuracy, drag free techniques, laser
power, frequency stability, and interferometer test mass. For BBHs like
GW150914 at 1Gpc, SNR$\sim 90$ is achieved with the definition of Pre-DECIGO in
the $0.01-100$Hz band. Pre-DECIGO can measure the mass spectrum and the
$z$-dependence of the merger rate to distinguish various models of BBHs like
GW150914.
  Pre-DECIGO can also predict the direction of BBHs at $z=0.1$ with an accuracy
of $\sim 0.3\,{\rm deg}^2$ and a merging time accuracy of $\sim 1$s at about a
day before the merger so that ground-based GW detectors further developed at
that time as well as electromagnetic follow-up observations can prepare for the
detection of merger in advance. For intermediate mass BBHs at a large redshift
$z > 10$, the QNM frequency after the merger can be within the Pre-DECIGO band
so that the ringing tail can also be detectable to confirm the Einstein theory
of general relativity with SNR$\sim 35$.
  [abridged]

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The categories of this paper are: quant-ph
1
The categories of this paper are: cs
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The categories of this paper are: supr-con
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
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The categories of this paper are: dg-ga
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The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
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The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: atom-ph
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The categories of this paper are: q-alg