Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1)

High-Resolution Spectral and Anisotropy Characteristics of Solar Protons During the GLE N(circle)73 on 28 October 2021 Derived with Neutron-Monitor Data Analysis




Julkaisun tekijät: Mishev Alexander L, Kocharov Leon G, Koldobskiy Sergey A, Larsen Nicholas, Riihonen Esa, Vainio Rami, Usoskin Ilya G

Kustantaja: SPRINGER

Julkaisuvuosi: 2022

Journal: Solar Physics

Tietokannassa oleva lehden nimi: SOLAR PHYSICS

Lehden akronyymi: SOL PHYS

Volyymi: 297

Julkaisunumero: 7

Sivujen määrä: 23

ISSN: 0038-0938

DOI: http://dx.doi.org/10.1007/s11207-022-02026-0

Verkko-osoite: https://link.springer.com/article/10.1007/s11207-022-02026-0

Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/175917408


Tiivistelmä
The first ground-level enhancement of the current Solar Cycle 25 occurred on 28 October 2021. It was observed by several space-borne and ground-based instruments, specifically neutron monitors. A moderate count-rate increase over the background was observed by high-altitude polar stations on the South Pole and Dome C stations at the Antarctic plateau. Most of the neutron monitors registered only marginal count-rate increases. Using detrended records and employing a method verified by direct space-borne measurements, we derive the rigidity spectra and angular distributions of the incoming solar protons in the vicinity of Earth. For the analysis, we employed a newly computed and parameterized neutron-monitor yield function. The rigidity spectra and anisotropy of solar protons were obtained in their time evolution throughout the event. A comparison with the Solar and Heliospheric Observatory/Energetic and Relativistic Nuclei and Electron (SOHO/ENRE) experiment data is also performed. We briefly discuss the results derived from our analysis.

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Last updated on 2022-12-08 at 13:22