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Effective rigidity of a polar neutron monitor for recording ground-level enhancements |
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| Author: | Koldobskiy, Sergey A.1,2; Kovaltsov, Gennady A.3; Usoskin, Ilya G.1,4 |
| Organizations: |
1Space Climate Research Unit, University of Oulu, Finland 2National Research Nuclear University MEPhI, Moscow, Russia 3Ioffe Physical-Technical Institute, St. Petersburg, Russia
4Sodankylä Geophysical Observatory, University of Oulu, Finland
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| Format: | article |
| Version: | accepted version |
| Access: | open |
| Online Access: | PDF Full Text (PDF, 0.7 MB) |
| Persistent link: | http://urn.fi/urn:nbn:fi-fe2018080833519 |
| Language: | English |
| Published: |
Springer Nature,
2018
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| Publish Date: | 2019-07-25 |
| Description: |
AbstractThe “effective” rigidity of a neutron monitor for a ground-level enhancement (GLE) event is defined so that the event-integrated fluence of solar energetic protons with rigidity above it is directly proportional to the integral intensity of the GLE as recorded by a polar neutron monitor, within a wide range of solar energetic-proton spectra. This provides a direct way to assess the integral fluence of a GLE event based solely on neutron-monitor data. The effective rigidity/energy was found to be 1.13 – 1.42 GV (550 – 800 MeV). A small model-dependent, systematic uncertainty in the value of the effective rigidity is caused by uncertainties in the low-energy range of the neutron-monitor yield function, which requires more detailed computations of the latter. see all
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| Series: |
Solar physics |
| ISSN: | 0038-0938 |
| ISSN-E: | 1573-093X |
| ISSN-L: | 0038-0938 |
| Volume: | 293 |
| Article number: | 110 |
| DOI: | 10.1007/s11207-018-1326-1 |
| OADOI: | https://oadoi.org/10.1007/s11207-018-1326-1 |
| Type of Publication: |
A1 Journal article – refereed |
| Field of Science: |
115 Astronomy and space science |
| Subjects: | |
| Funding: |
This work was partially supported by the ReSoLVE Centre of Excellence (Academy of Finland, project 272157). S.A. Koldobskiy acknowledges grant no. MK-6160.2018.2 of the President of the Russian Federation and MEPhI Academic Excellence Project (contract 02.a03.21.0005). |
| 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 Solar Physics. The final authenticated version is available online at: http://dx.doi.org/10.1007/s11207-018-1326-1. |