Activity profile, mass distribution index, radiants, and orbits of the 2018 Draconid meteor shower outburst

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F20%3A00534187" target="_blank" >RIV/67985815:_____/20:00534187 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21230/20:00341004

Výsledek na webu

<a href="https://doi.org/10.1016/j.pss.2020.104871" target="_blank" >https://doi.org/10.1016/j.pss.2020.104871</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.pss.2020.104871" target="_blank" >10.1016/j.pss.2020.104871</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Activity profile, mass distribution index, radiants, and orbits of the 2018 Draconid meteor shower outburst

Popis výsledku v původním jazyce

An outburst of Draconid meteor shower was predicted for October 8 to 9, 2018. Using a variety of video and photographic cameras covering a broad range of magnitudes, the shower activity profile was measured. The main peak was observed at the solar longitude lambda(o) = 195:359 degrees +/- 0:003 degrees, what is equivalent to 23(h)07.5(m) +/- 5(m) UT. This result is in good agreement with other reports as well as with the predictions. Two other sub-peaks or enhancements of the activity were detected later in the night. The maximum flux of meteoroids reached value of Phi(6.5) = 0.033 +/- 0.007 meteoroids km(-2) h(-1) [MV> +6.5]. This is equivalent to ZHR = 140 +/- 30 which is higher than the majority of the models predicted. The analysis of the mass distribution index evolution and the comparison with other experiments suggests that the later activity was probably caused by the mixture of the different trails of the stream which were more dispersed. The flux of the meteoroids was three to four times smaller in comparison with the 2011 Draconid outburst. When comparing the radiants and velocities of the observed meteors with the model data, good agreement was found for the right ascension and velocity but a small offset of about +0.5 degrees was observed in declination. On the other hand, the mean main peak radiant fits well the model of Maslov (2011).

Název v anglickém jazyce

Activity profile, mass distribution index, radiants, and orbits of the 2018 Draconid meteor shower outburst

Popis výsledku anglicky

An outburst of Draconid meteor shower was predicted for October 8 to 9, 2018. Using a variety of video and photographic cameras covering a broad range of magnitudes, the shower activity profile was measured. The main peak was observed at the solar longitude lambda(o) = 195:359 degrees +/- 0:003 degrees, what is equivalent to 23(h)07.5(m) +/- 5(m) UT. This result is in good agreement with other reports as well as with the predictions. Two other sub-peaks or enhancements of the activity were detected later in the night. The maximum flux of meteoroids reached value of Phi(6.5) = 0.033 +/- 0.007 meteoroids km(-2) h(-1) [MV> +6.5]. This is equivalent to ZHR = 140 +/- 30 which is higher than the majority of the models predicted. The analysis of the mass distribution index evolution and the comparison with other experiments suggests that the later activity was probably caused by the mixture of the different trails of the stream which were more dispersed. The flux of the meteoroids was three to four times smaller in comparison with the 2011 Draconid outburst. When comparing the radiants and velocities of the observed meteors with the model data, good agreement was found for the right ascension and velocity but a small offset of about +0.5 degrees was observed in declination. On the other hand, the mean main peak radiant fits well the model of Maslov (2011).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Planetary and Space Science

ISSN

0032-0633

e-ISSN

—

Svazek periodika

184

Číslo periodika v rámci svazku

May

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

104871

Kód UT WoS článku

000525917200001

EID výsledku v databázi Scopus

2-s2.0-85079549010