Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The astrophysical odds of GW151216   The gravitational-wave candidate GW151216 is a proposed binary black hole
event from the first observing run of the Advanced LIGO detectors. Not
identified as a bona fide signal by the LIGO--Virgo collaboration, there is
disagreement as to its authenticity, which is quantified by $p_\text{astro}$,
the probability that the event is astrophysical in origin. Previous estimates
of $p_\text{astro}$ from different groups range from 0.18 to 0.71, making it
unclear whether this event should be included in population analyses, which
typically require $p_\text{astro}>0.5$. Whether GW151216 is an astrophysical
signal or not has implications for the population properties of stellar-mass
black holes and hence the evolution of massive stars. Using the astrophysical
odds, a Bayesian method which uses the signal coherence between detectors and a
parameterised model of non-astrophysical detector noise, we find that
$p_\text{astro}=0.03$, suggesting that GW151216 is unlikely to be a genuine
signal. We also analyse GW150914 (the first gravitational-wave detection) and
GW151012 (initially considered to be an ambiguous detection) and find
$p_\text{astro}$ values of 1 and 0.997 respectively. We argue that the
astrophysical odds presented here improve upon traditional methods for
distinguishing signals from noise.

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The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
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The categories of this paper are: stat
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The categories of this paper are: dg-ga
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The categories of this paper are: quant-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: ao-sci
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The categories of this paper are: atom-ph
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The categories of this paper are: physics
0
The categories of this paper are: hep-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: cond-mat
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The categories of this paper are: hep-lat
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The categories of this paper are: funct-an
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The categories of this paper are: chao-dyn