Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Aleksandra Kolarski"'
Publikováno v:
Data, Vol 9, Iss 1, p 17 (2024)
Machine learning (ML) methods are commonly applied in the fields of extraterrestrial physics, space science, and plasma physics. In a prior publication, an ML classification technique, the Random Forest (RF) algorithm, was utilized to automatically i
Externí odkaz:
https://doaj.org/article/92b15e41b52a411d9d0edd084f126f48
Publikováno v:
Universe, Vol 9, Iss 11, p 474 (2023)
Following solar flares (SF), the abrupt increase in X-radiation and EUV emission generates additional ionization and higher absorption of, e.g., electromagnetic waves in the sunlit hemisphere of the Earth’s ionosphere. The modeling of the ionospher
Externí odkaz:
https://doaj.org/article/976e2d1b6fc9434397cc4a2e9bfd4bda
Publikováno v:
Universe, Vol 9, Iss 10, p 436 (2023)
The process of manually checking, validating, and excluding data in an ionospheric very-low-frequency (VLF) analysis during extreme events is a labor-intensive and time-consuming task. However, this task can be automated through the utilization of ma
Externí odkaz:
https://doaj.org/article/9f184d21c74147de8e30772cc65326f3
Impacts of Extreme Space Weather Events on September 6th, 2017 on Ionosphere and Primary Cosmic Rays
Autor:
Aleksandra Kolarski, Nikola Veselinović, Vladimir A. Srećković, Zoran Mijić, Mihailo Savić, Aleksandar Dragić
Publikováno v:
Remote Sensing, Vol 15, Iss 5, p 1403 (2023)
The strongest X-class solar flare (SF) event in 24th solar cycle, X9.3, occurred on 6 September 2017, accompanied by earthward-directed coronal mass ejections (CMEs). Such space weather episodes are known to cause various threats to human activities
Externí odkaz:
https://doaj.org/article/3df0f52467204c00ab7e87459533ad55
Autor:
Vladimir A. Srećković, Ljubinko M. Ignjatović, Aleksandra Kolarski, Zoran R. Mijić, Milan S. Dimitrijević, Veljko Vujčić
Publikováno v:
Data, Vol 7, Iss 9, p 129 (2022)
The calculated photodissociation data of some small molecular ions have been reported. The cross-sections and spectral rate coefficients data have been studied using a quantum mechanical method. The plasma parameters, i.e., conditions, cover temperat
Externí odkaz:
https://doaj.org/article/eefe6f5b420f4ce3b19f033e4b3ef6be
Publikováno v:
Applied Sciences, Vol 12, Iss 2, p 582 (2022)
The lower ionosphere influences the propagation of electromagnetic (EM) waves, satellite and also terrestrial (anthropic) signals at the time of intense perturbations and disturbances. Therefore, data and modelling of the perturbed lower ionosphere a
Externí odkaz:
https://doaj.org/article/5eb6a282b207448784ca3399a1eea0e6
Autor:
Davorka Grubor, Aleksandra Kolarski
An analysis of D-region electron density height profile variations, induced by four isolated solar X-ray flares during period from September 2005 to December 2006, based on the amplitude and the phase delay perturbation of 22.1 kHz signal trace from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be72852e6edceee81da4cc1335693c60
http://arxiv.org/abs/1405.4128
http://arxiv.org/abs/1405.4128
Publikováno v:
Open Astronomy, Vol 20, Iss 4, Pp 591-595 (2011)
An analysis of four solar flare X-ray irradiance effects on VLF signal amplitude and phase delay variations on the NAA/24.0 kHz signal trace during the period from 2005 September to 2006 December was carried out. Solar flare data were taken from the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f0bf706b58adfecc2894e9175735c2f
https://doi.org/10.1515/astro-2017-0342
https://doi.org/10.1515/astro-2017-0342