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dc.contributor.author
Janches, Diego
dc.contributor.author
Brunini, Claudio Antonio
dc.contributor.author
Hormaechea, José Luis
dc.date.available
2022-12-12T11:01:36Z
dc.date.issued
2019-06
dc.identifier.citation
Janches, Diego; Brunini, Claudio Antonio; Hormaechea, José Luis; A Decade of Sporadic Meteoroid Mass Distribution Indices in the Southern Hemisphere Derived from SAAMER's Meteor Observations; IOP Publishing; Astronomical Journal; 157; 6; 6-2019; 1-10
dc.identifier.issn
0004-6256
dc.identifier.uri
http://hdl.handle.net/11336/180674
dc.description.abstract
We present determinations of the meteoroid differential mass index, s, using over a decade of meteor observations from the Southern Argentina Agile MEteor Radar (SAAMER). For this, we employ an autonomous statistical technique to determine this parameter from the measured radar echo amplitudes. Unlike previous studies, we examine the role of the system noise in the determination of this parameter and found that if not taken into account appropriately, the results can yield significant over estimations of the mass index. In general we found that a value of s = 2.0 represents SAAMER's results in general agreement with recent studies performed in the northern hemisphere. We explore both the index interannual and seasonal variability and, unlike previous studies, we found them to be constant, except during the presence of the Southern δ Aquariids meteor shower which is so strong that it dominates the meteor counts when present. Our study suggests that using the maximum echo amplitude for these studies is not ideal as it can be biased by many factors which make the inaccuracies larger than the precision estimated by the fitting routine. A method that results in a more direct estimate of the electron line density would be required which takes into account range, gain pattern, system noise, etc.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
IOP Publishing
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
METEORITES, METEORS, METEOROIDS
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METHODS: DATA ANALYSIS
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METHODS: OBSERVATIONAL
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TECHNIQUES: RADAR ASTRONOMY
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ZODIACAL DUST
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Meteorología y Ciencias Atmosféricas
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
A Decade of Sporadic Meteoroid Mass Distribution Indices in the Southern Hemisphere Derived from SAAMER's Meteor Observations
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-12-07T18:00:19Z
dc.journal.volume
157
dc.journal.number
6
dc.journal.pagination
1-10
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Janches, Diego. No especifíca;
dc.description.fil
Fil: Brunini, Claudio Antonio. Universidad Nacional de La Plata; Argentina. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - la Plata. Laboratorio Geo - Aggo.; Argentina
dc.description.fil
Fil: Hormaechea, José Luis. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
dc.journal.title
Astronomical Journal
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3847/1538-3881/ab1b0f
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