Oxygen line in fireball spectra and implications to satellite observations of fireballs

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F23%3A00604851" target="_blank" >RIV/67985815:_____/23:00604851 - isvavai.cz</a>
Result on the web
<a href="https://articles.adsabs.harvard.edu/pdf/2023pimo.conf...44V" target="_blank" >https://articles.adsabs.harvard.edu/pdf/2023pimo.conf...44V</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Oxygen line in fireball spectra and implications to satellite observations of fireballs
Original language description
We examined the spectral region at 777 nm, where the oxygen triplet dominates, in spectra of 43 fireballs with magnitudes from -8 to -15 obtained within the European Fireball Network. The radiant intensity was compared with the energy radiated in the broadband spectrum. It was confirmed that meteor velocity strongly affects the intensity of the oxygen triplet. In slow meteors, the excitation of atmospheric elements, including oxygen, is low and the relative brightness of atmospheric lines is lower than it is in the case of fast meteors. On the other hand, the oxygen triplet belongs to the brightest lines in the spectra of fast meteors. This behavior must be taken into account when estimating total fireball magnitude from narrow band observations at 777 nm, as is the case with the Geostationary Lightning Mapper (GLM) on board the GOES satellites. We derived an empirical relation between meteor speed, radiation at 777 nm, and the absolute visual magnitude of the meteor. We have successfully applied this relation to real GLM data and can estimate the magnitude of the fireballs observed from these weather satellites.
Czech name
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Czech description
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Project
<a href="/en/project/GX19-26232X" target="_blank" >GX19-26232X: Compositional and orbital mapping of meteoroid sources in the Solar System</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the International Meteor Conference
ISBN
978-2-87355-035-6
ISSN
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e-ISSN
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Number of pages
3
Pages from-to
38-40
Publisher name
International Meteor Organization
Place of publication
Mechelen
Event location
Poroszlo
Event date
Sep 29, 2022
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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