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dc.contributor.author Gao, B.
dc.contributor.author Mathews, J. D.
dc.date.accessioned 2018-11-15T13:25:08Z
dc.date.available 2018-11-15T13:25:08Z
dc.date.issued 2014-12-08
dc.identifier.citation Gao, B., & Mathews, J. D. (2014). High-altitude meteors and meteoroid fragmentation observed at the Jicamarca Radio Observatory.==$Monthly Notices of the Royal Astronomical Society, 446$==(4), 3404–3415. https://doi.org/10.1093/mnras/stu2176 es_ES
dc.identifier.uri http://hdl.handle.net/20.500.12816/3619
dc.description.abstract Modern high-power, large-aperture (HPLA) radars have been used in a variety of investigations including the investigation of meteoroid fragmentation. The identification of fragmentation has been based on a detailed interpretation, based on radio science, of head- and trail-echo properties. We now extend the discussion of fragmenting meteoroids to include apparent high-altitude (130–180 km) meteors observed at the Jicamarca Radio Observatory (JRO). While there have been a few reports of high-altitude meteors observed both optically and with radar, the meteor radar community has remained sceptical, with suspicions of antenna side-lobe contamination being the most commonly raised objection. We report results from two sets of meteor observations carried out at JRO in 2010 April. Our findings include meteoroid fragmentation results that are similar to those from the Arecibo VHF radar. These findings lead to the conclusions that fragmentation is not only observed at the JRO but that k⊥B scattering adds an interesting additional radio science dimension to the issue. We also report on apparent high-altitude meteor events that, if ultimately confirmed, offer insight into sputtering as a source of the meteor ionization, and perhaps indicate the unique importance of magnetic field geometry in these head-echo observations. Also, new, apparently high-altitude transient events, likely related to the meteoroid flux, have been identified. In presenting these results, we note our careful calibration of the JRO radar, utilizing satellite returns in order to largely, if not totally, exclude side-lobe contamination and other possible error sources, as reported in our companion paper. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher Royal Astronomical Society es_ES
dc.relation.ispartof urn:issn:0035-8711
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject Techniques: radar astronomy es_ES
dc.subject Meteorites es_ES
dc.subject Meteors es_ES
dc.subject Meteoroids es_ES
dc.title High-altitude meteors and meteoroid fragmentation observed at the Jicamarca Radio Observatory es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.01 es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.03.08 es_ES
dc.identifier.journal Monthly Notices of the Royal Astronomical Society es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi https://doi.org/10.1093/mnras/stu2176 es_ES

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