Radiants and orbits of Geminids observed by the European Fireball Network

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F23%3A00604840" target="_blank" >RIV/67985815:_____/23:00604840 - isvavai.cz</a>

Výsledek na webu

<a href="http://ftp.dutch-meteor-society.nl/Publications-General/Radiants%20and%20orbits%20of%20Geminids%20observed%20by%20the%20European%20Network.pdf" target="_blank" >http://ftp.dutch-meteor-society.nl/Publications-General/Radiants%20and%20orbits%20of%20Geminids%20observed%20by%20the%20European%20Network.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Radiants and orbits of Geminids observed by the European Fireball Network

Popis výsledku v původním jazyce

Precise radiants and orbits of bright Geminid meteors observed by the digital cameras of the European Fireball Network in the recent years are presented. When corrected for the radiant motion, most individual radiants fall within an area of a diameter of one degree. The radiants in the east-south-eastern part of that area belong to meteoroids with smaller semimajor axes and larger arguments of perihelia. We can distinguish a core of the stream with semimajor axes between 1.25 AU and 1.30 AU and a wing with semimajor axes up to 1.39 AU. The core is more concentrated in eccentricities and perihelion distances than the wing. Both core and wing meteoroids are encountered during the whole duration of the shower. The wing contains smaller meteoroids on average. Therefore, an opposite trend than expected from the action of the Poynting–Robertson effect, which decreases semimajor axes of small meteoroids, is present in Geminids, as noted already by (Spurný 1993). We hope that our new observations together with a modeling effort will shed light on the formation and evolution of the stream.

Název v anglickém jazyce

Radiants and orbits of Geminids observed by the European Fireball Network

Popis výsledku anglicky

Precise radiants and orbits of bright Geminid meteors observed by the digital cameras of the European Fireball Network in the recent years are presented. When corrected for the radiant motion, most individual radiants fall within an area of a diameter of one degree. The radiants in the east-south-eastern part of that area belong to meteoroids with smaller semimajor axes and larger arguments of perihelia. We can distinguish a core of the stream with semimajor axes between 1.25 AU and 1.30 AU and a wing with semimajor axes up to 1.39 AU. The core is more concentrated in eccentricities and perihelion distances than the wing. Both core and wing meteoroids are encountered during the whole duration of the shower. The wing contains smaller meteoroids on average. Therefore, an opposite trend than expected from the action of the Poynting–Robertson effect, which decreases semimajor axes of small meteoroids, is present in Geminids, as noted already by (Spurný 1993). We hope that our new observations together with a modeling effort will shed light on the formation and evolution of the stream.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GX19-26232X" target="_blank" >GX19-26232X: Mapování zdrojů meteoroidů z hlediska jejich složení a výskytu ve sluneční soustavě</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the International Meteor Conference

ISBN

978-2-87355-035-6

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

34-37

Název nakladatele

International Meteor Organization

Místo vydání

Mechelen

Místo konání akce

Poroszlo

Datum konání akce

29. 9. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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