First analysis of ground-level enhancement (GLE) 72 on 10 September 2017 : first analysis of ground-level enhancement (GLE) 72 on 10 September 2017 |
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Author: | Mishev, A.1,2; Usoskin, I.1,2; Raukunen, O.3; |
Organizations: |
1Space Climate Research Unit, University of Oulu, Oulu, Finland 2Sodankylä Geophysical Observatory (Oulu unit), University of Oulu, Oulu, Finland 3Department of Physics and Astronomy, University of Turku, Turku, Finland |
Format: | article |
Version: | accepted version |
Access: | open |
Online Access: | PDF Full Text (PDF, 2.4 MB) |
Persistent link: | http://urn.fi/urn:nbn:fi-fe2019100431176 |
Language: | English |
Published: |
Springer Nature,
2018
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Publish Date: | 2019-10-04 |
Description: |
AbstractUsing data obtained with neutron monitors and space-borne instruments, we analyzed the second ground-level enhancement (GLE) of Solar Cycle 24, namely the event of 10 September 2017 (GLE 72), and derived the spectral and angular characteristics of associated GLE particles. We employed a new neutron-monitor yield function and a recently proposed model based on an optimization procedure. The method consists of simulating particle propagation in a model magnetosphere in order to derive the cutoff rigidity and neutron-monitor asymptotic directions. Subsequently, the rigidity spectrum and anisotropy of GLE particles are obtained in their dynamical evolution during the event on the basis of an inverse-problem solution. The derived angular distribution and spectra are discussed briefly. see all
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Series: |
Solar physics |
ISSN: | 0038-0938 |
ISSN-E: | 1573-093X |
ISSN-L: | 0038-0938 |
Volume: | 293 |
Article number: | 136 |
DOI: | 10.1007/s11207-018-1354-x |
OADOI: | https://oadoi.org/10.1007/s11207-018-1354-x |
Type of Publication: |
A1 Journal article – refereed |
Field of Science: |
115 Astronomy and space science |
Subjects: | |
Funding: |
This work was supported by the Academy of Finland (project No. 272157, Center of Excellence ReSoLVE and project No. 267186). |
Academy of Finland Grant Number: |
272157 |
Detailed Information: |
272157 (Academy of Finland Funding decision) |
Copyright information: |
© Springer Nature B.V. 2018. This is a post-peer-review, pre-copyedit version of an article published in Sol Phys. The final authenticated version is available online at: https://doi.org/10.1007/s11207-018-1354-x. |