Azimuthal modulation of the event rate of cosmic ray extensive air showers by the geomagnetic field

The Earth's magnetic field effect on the azimuthal distribution of extensive air showers (EAS) of cosmic rays has been evaluated using a bulk of the Yakutsk array data. The uniform azimuthal distribution of the EAS event rate is rejected at the significance level 10^(-14). Amplitude of the firs...

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Main Authors: Ivanov, A. A., Egorova, V. P., Kolosov, V. A., Krasilnikov, A. D., Pravdin, M. I., Sleptsov, I. Ye.
Format: Text
Language:unknown
Published: arXiv 1999
Subjects:
Astrophysics astro-ph
FOS Physical sciences
Yakutsk
Online Access:https://dx.doi.org/10.48550/arxiv.astro-ph/9903337
https://arxiv.org/abs/astro-ph/9903337
id ftdatacite:10.48550/arxiv.astro-ph/9903337
record_format openpolar
spelling ftdatacite:10.48550/arxiv.astro-ph/9903337 2023-05-15T18:45:26+02:00 Azimuthal modulation of the event rate of cosmic ray extensive air showers by the geomagnetic field Ivanov, A. A. Egorova, V. P. Kolosov, V. A. Krasilnikov, A. D. Pravdin, M. I. Sleptsov, I. Ye. 1999 https://dx.doi.org/10.48550/arxiv.astro-ph/9903337 https://arxiv.org/abs/astro-ph/9903337 unknown arXiv https://dx.doi.org/10.1134/1.568025 Assumed arXiv.org perpetual, non-exclusive license to distribute this article for submissions made before January 2004 http://arxiv.org/licenses/assumed-1991-2003/ Astrophysics astro-ph FOS Physical sciences article-journal Article ScholarlyArticle Text 1999 ftdatacite https://doi.org/10.48550/arxiv.astro-ph/9903337 https://doi.org/10.1134/1.568025 2022-04-01T17:19:08Z The Earth's magnetic field effect on the azimuthal distribution of extensive air showers (EAS) of cosmic rays has been evaluated using a bulk of the Yakutsk array data. The uniform azimuthal distribution of the EAS event rate is rejected at the significance level 10^(-14). Amplitude of the first harmonics of observed distribution depends on zenith angle as A1=0.2*sin^2(theta) and is almost independent of the primary energy; the phase coincides with the magnetic meridian. Basing upon the value of measured effect, the correction factor has been derived for the particle density depending on a geomagnetic parameter of a shower. : 4 pages, 3 figures in ps files Text Yakutsk DataCite Metadata Store (German National Library of Science and Technology) Yakutsk
institution Open Polar
collection DataCite Metadata Store (German National Library of Science and Technology)
op_collection_id ftdatacite
language unknown
topic Astrophysics astro-ph
FOS Physical sciences
spellingShingle Astrophysics astro-ph
FOS Physical sciences
Ivanov, A. A.
Egorova, V. P.
Kolosov, V. A.
Krasilnikov, A. D.
Pravdin, M. I.
Sleptsov, I. Ye.
Azimuthal modulation of the event rate of cosmic ray extensive air showers by the geomagnetic field
topic_facet Astrophysics astro-ph
FOS Physical sciences
description The Earth's magnetic field effect on the azimuthal distribution of extensive air showers (EAS) of cosmic rays has been evaluated using a bulk of the Yakutsk array data. The uniform azimuthal distribution of the EAS event rate is rejected at the significance level 10^(-14). Amplitude of the first harmonics of observed distribution depends on zenith angle as A1=0.2*sin^2(theta) and is almost independent of the primary energy; the phase coincides with the magnetic meridian. Basing upon the value of measured effect, the correction factor has been derived for the particle density depending on a geomagnetic parameter of a shower. : 4 pages, 3 figures in ps files
format Text
author Ivanov, A. A.
Egorova, V. P.
Kolosov, V. A.
Krasilnikov, A. D.
Pravdin, M. I.
Sleptsov, I. Ye.
author_facet Ivanov, A. A.
Egorova, V. P.
Kolosov, V. A.
Krasilnikov, A. D.
Pravdin, M. I.
Sleptsov, I. Ye.
author_sort Ivanov, A. A.
title Azimuthal modulation of the event rate of cosmic ray extensive air showers by the geomagnetic field
title_short Azimuthal modulation of the event rate of cosmic ray extensive air showers by the geomagnetic field
title_full Azimuthal modulation of the event rate of cosmic ray extensive air showers by the geomagnetic field
title_fullStr Azimuthal modulation of the event rate of cosmic ray extensive air showers by the geomagnetic field
title_full_unstemmed Azimuthal modulation of the event rate of cosmic ray extensive air showers by the geomagnetic field
title_sort azimuthal modulation of the event rate of cosmic ray extensive air showers by the geomagnetic field
publisher arXiv
publishDate 1999
url https://dx.doi.org/10.48550/arxiv.astro-ph/9903337
https://arxiv.org/abs/astro-ph/9903337
geographic Yakutsk
geographic_facet Yakutsk
genre Yakutsk
genre_facet Yakutsk
op_relation https://dx.doi.org/10.1134/1.568025
op_rights Assumed arXiv.org perpetual, non-exclusive license to distribute this article for submissions made before January 2004
http://arxiv.org/licenses/assumed-1991-2003/
op_doi https://doi.org/10.48550/arxiv.astro-ph/9903337
https://doi.org/10.1134/1.568025
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