Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Possible Interstellar meteoroids detected by the Canadian Meteor Orbit
  Radar   We examine meteoroid orbits recorded by the Canadian Meteor Orbit Radar
(CMOR) from 2012-2019, consisting of just over 11 million orbits in a search
for potential interstellar meteoroids. Our 7.5 year survey consists of an
integrated time-area product of $\sim$ 7$\times$ 10$^6$ km$^2$ hours. Selecting
just over 160000 six station meteor echoes having the highest measured velocity
accuracy from within our sample, we found five candidate interstellar events.
These five potential interstellar meteoroids were found to be hyperbolic at the
2$\sigma$-level using only their raw measured speed. Applying a new atmospheric
deceleration correction algorithm developed for CMOR, we show that all five
candidate events were likely hyperbolic at better than 3$\sigma$, the most
significant being a 3.7$\sigma$ detection. Assuming all five detections are
true interstellar meteoroids, we estimate the interstellar meteoroid flux at
Earth to be at least 6.6 $\times$ 10$^{-7}$ meteoroids/km$^{2}$/hr appropriate
to a mass of 2 $\times$ 10$^{-7}$kg.
  Using estimated measurement uncertainties directly extracted from CMOR data,
we simulated CMOR's ability to detect a hypothetical 'Oumuamua - associated
hyperbolic meteoroid stream. Such a stream was found to be significant at the
1.8$\sigma$ level, suggesting that CMOR would likely detect such a stream of
meteoroids as hyperbolic. We also show that CMOR's sensitivity to interstellar
meteoroid detection is directionally dependent.

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The categories of this paper are: nlin
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The categories of this paper are: cond-mat
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The categories of this paper are: q-bio
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The categories of this paper are: quant-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-th
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The categories of this paper are: bayes-an
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The categories of this paper are: solv-int
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The categories of this paper are: physics
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The categories of this paper are: q-alg
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The categories of this paper are: alg-geom
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The categories of this paper are: econ
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The categories of this paper are: atom-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: stat