Mostrar el registro sencillo del ítem Chau Chong Shing, Jorge Luis Galindo, Freddy 2018-07-18T16:27:14Z 2018-07-18T16:27:14Z 2008-03
dc.identifier.citation Chau, J. L., & Galindo, F. (2008). First definitive observations of meteor shower particles using a high-power-large-aperture radar.==$Icarus, 194$==(1), 23-29. es_ES
dc.identifier.govdoc index-oti2018
dc.description.abstract We present the first clear observations of meteor shower activity from meteor-head echoes detected by a high-power large-aperture radar (HPLAR). Such observations have been performed at the Jicamarca VHF radar using its interferometric capabilities allowing the discrimination of meteor shower echoes from the much more frequent sporadic meteors. Until now, HPLARs were unable to distinguish meteor shower from the much more common sporadic meteor ones. In this work we have been able to detect and characterize the η-Aquariids (ETA) as well as the Perseids (PER) showers. The shower activity is more conspicuous for the ETA than for the PER shower due to the more favorable geometry. Namely, PER meteors come from low elevation angles, experiencing more filtering due to the combined Earth–atmosphere–radar instrument. In both cases, there is an excellent agreement between the measured mean velocity of the shower echoes and their expected velocity, within a fraction of 1 km s−1. Besides the good agreement with expected visual results, HPLARs observe meteors with a variety of particles sizes and masses, not observed by any other technique. Taking into account the different viewing volumes, compare to optical observations Jicamarca observes more than 1000 times more ETA meteors. Our results indicate that Jicamarca and other HPLARs are able to detect the echoes from meteor showers, but without interferometric capabilities such populations are difficult to identify just from their velocity distributions, particularly if their velocity distributions are expected to be similar to the more dominant distributions of sporadic meteors. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof urn:issn:0019-1035
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject Meteors es_ES
dc.subject Ionospheres es_ES
dc.subject Radar observations es_ES
dc.subject Comet Halley es_ES
dc.title First definitive observations of meteor shower particles using a high-power-large-aperture radar es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde es_ES
dc.identifier.journal Icarus es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi es_ES




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