University of Oulu

Koldobskiy, S., Kovaltsov, G., & Usoskin, I. (2021, July 27). Role of heavier-than-proton nuclei in neutron monitor response. Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021). 37th International Cosmic Ray Conference.

Role of heavier-than-proton nuclei in neutron monitor response

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Author: Koldobskiy, Sergey1,2; Kovaltsov, Gennady3; Usoskin, Ilya1
Organizations: 1University of Oulu, Finland
2National Research Nuclear University MEPhI, Moscow, Russia
3Ioffe Physical-Technical Institute, St. Petersburg, Russia
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.7 MB)
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Language: English
Published: Sissa, 2021
Publish Date: 2021-08-16


Heavier-than-proton nuclei in cosmic rays are responsible for up to 45% of neutron monitor (NM)response depending on the level of solar modulation as well as the geomagnetic rigidity cutoffand altitude of a given NM location. Therefore, careful consideration of these heavy species isimportant for an accurate analysis of NM data, including a reconstruction of the solar modulationpotential using the worldwide NM network data. Recently, the AMS-02 experiment allowed usto directly verify the NM response to heavy particles. In this work, we evaluate the expectedcontribution of heavy nuclei into the NM response considering different models of the localinterstellar spectrum and also for different levels of solar activity.

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Series: POS. Proceedings of science
ISSN: 1824-8039
ISSN-E: 1824-8039
ISSN-L: 1824-8039
Volume: 395
Article number: 1284
DOI: 10.22323/1.395.1284
Host publication: Proceedings of 37th International Cosmic Ray Conference (ICRC2021)
Conference: International Cosmic Ray Conference
Type of Publication: B3 Article in conference proceedings
Field of Science: 115 Astronomy and space science
Funding: This work was partially supported by the Academy of Finland (projects No. 321882 ESPERA,330063 QUASARE). S.K. acknowledges support by the Russian Science Foundation project no.20-72-10170.
Academy of Finland Grant Number: 321882
Detailed Information: 321882 (Academy of Finland Funding decision)
Copyright information: © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).