Magnetospheric effects on cosmic rays during the magnetic storm of March 2015-Reference-Cited by-同舟云学术

Magnetospheric effects on cosmic rays during the magnetic storm of March 2015

Published:2023-07-15 Issue: Volume: Page:37-46
ISSN:2748-3150
Container-title:Cosmic ray studies with neutron detectors
language:
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Author:

Ntina Elena¹^ORCID,Gerontoidou Maria¹^ORCID,Abunina Maria²^ORCID,Belov Anatoly³^ORCID,Yanke Victor³^ORCID,Laoutaris Angelos⁴^ORCID

Affiliation:

1. National and Kapodistrian University of Athens

2. IZMIRAN – Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radiowave Propagation

3. Institute of Terrestrial Magnetism Ionosphere and Radio Wave Propagation

4. Institute of Nuclear and Particle Physics

Abstract

Cosmic ray variations of magnetospheric origin during the magnetic storm on 17th of March 2015 were studied. Cosmic ray intensity data were obtained from the neutron monitor database (NMDB) and the data of the Dst index were taken from World Data Center for Geomagnetism, Kyoto. The global survey method was employed for the calculation of changes in the cutoff rigidities throughout the storm. A correlation analysis between the Dst index and the calculated cutoff rigidity variations was performed for each cosmic ray station. The most essential decrease in cutoff rigidities occured when the Dst index was around the value of -234nT. A latitudinal distribution of the cutoff rigidities was acquired, showing that the maximum effect took place at mid-latitude stations with rigidities around 8-10GV. During the examined event the maximum change in cutoff rigidity was observed at Athens station where the decrease of the cutoff rigidity reached the value of 1.07GV. Furthermore, corrections of cosmic ray intensity due to the magnetospheric effect were calculated using the derived cutoff rigidities showing a discperancy with the observed values at mid- and low- latitude stations.

Funder

Seventh Framework Programme

Publisher

Universitätsverlag Kiel | Kiel University Publishing

Reference3 articles.

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2. Magnetospheric effects in cosmic rays during the unique magnetic storm on November 2003

3. Belov, A., Eroshenko, E., Yanke, V., Oleneva, V., Abunin, A., Abunina, M., Mavromichalaki, H. (2018). The global survey method applied to ground-level cosmic ray measurements. Solar Physics, 293(4), 1-23.