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Evaluating Single Spacecraft Observations of Planetary Magnetotails With Simple Monte Carlo Simulations: 2. Magnetic Flux Rope Signature Selection Effects
dc.contributor.authorSmith, A. W.
dc.contributor.authorJackman, C. M.
dc.contributor.authorFrohmaier, C. M.
dc.contributor.authorFear, R. C.
dc.contributor.authorSlavin, J. A.
dc.contributor.authorCoxon, J. C.
dc.date.accessioned2019-02-12T20:25:23Z
dc.date.available2020-02-03T20:18:25Zen
dc.date.issued2018-12
dc.identifier.citationSmith, A. W.; Jackman, C. M.; Frohmaier, C. M.; Fear, R. C.; Slavin, J. A.; Coxon, J. C. (2018). "Evaluating Single Spacecraft Observations of Planetary Magnetotails With Simple Monte Carlo Simulations: 2. Magnetic Flux Rope Signature Selection Effects." Journal of Geophysical Research: Space Physics 123(12): 10,124-10,138.
dc.identifier.issn2169-9380
dc.identifier.issn2169-9402
dc.identifier.urihttps://hdl.handle.net/2027.42/147874
dc.description.abstractA Monte Carlo method of investigating the effects of placing selection criteria on the magnetic signature of in situ encounters with flux ropes is presented. The technique is applied to two recent flux rope surveys of MESSENGER data within the Hermean magnetotail. It is found that the different criteria placed upon the signatures will preferentially identify slightly different subsets of the underlying population. Quantifying the selection biases first allows the distributions of flux rope parameters to be corrected, allowing a more accurate estimation of the intrinsic distributions. This is shown with regard to the distribution of flux rope radii observed. When accounting for the selection criteria, the mean radius of Hermean magnetotail quasi‐force‐free flux ropes is found to be 589−269+273 km. Second, it is possible to weight the known identifications in order to determine a rate of recurrence that accounts for the presence of the structures that will not be identified. In the case of the Hermean magnetotail, the average rate of quasi‐force‐free flux ropes is found to 0.12 min−1 when selection effects are accounted for (up from 0.05 min−1 previously inferred from observations). Key PointsA Monte Carlo method is presented to estimate and correct for sampling biases in spacecraft surveys of magnetic flux ropesMethod allows the correction of observed distributions (e.g., flux rope radii) according to the selection criteria employedAccounting for unidentified flux ropes increases the average rate of flux ropes in Mercury’s magnetotail from 0.05 to 0.12 min−1
dc.publisherWiley Periodicals, Inc.
dc.subject.otherflux ropes
dc.subject.otherMercury
dc.subject.othermagnetotail
dc.subject.otherreconnection
dc.subject.otherMonte Carlo
dc.subject.otherMESSENGER
dc.titleEvaluating Single Spacecraft Observations of Planetary Magnetotails With Simple Monte Carlo Simulations: 2. Magnetic Flux Rope Signature Selection Effects
dc.typeArticleen_US
dc.rights.robotsIndexNoFollow
dc.subject.hlbsecondlevelAstronomy and Astrophysics
dc.subject.hlbtoplevelScience
dc.description.peerreviewedPeer Reviewed
dc.description.bitstreamurlhttps://deepblue.lib.umich.edu/bitstream/2027.42/147874/1/jgra54690_am.pdf
dc.description.bitstreamurlhttps://deepblue.lib.umich.edu/bitstream/2027.42/147874/2/jgra54690.pdf
dc.identifier.doi10.1029/2018JA025959
dc.identifier.sourceJournal of Geophysical Research: Space Physics
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dc.owningcollnameInterdisciplinary and Peer-Reviewed


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