Galactic cosmic ray decreases associated with non-interacting magnetic clouds in the 23rd solar cycle

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Sudden Galactic Cosmic Ray (GCR) intensity decreases are related to the passage of Interplanetary Coronal Mass Ejections (ICMEs). These phenomena are also known as Forbush Decreases (FDs). The deepest FDs are associated with the passage of Magnetic Clouds (MCs). In this preliminary study we select &...

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Autores principales: Masías-Meza, J.J., Dasso, S.
Formato: SER
Materias:
Cosmic rays
Sun: coronal mass ejections (CMEs)
Sun: magnetic fields
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_17439213_v8_nS300_p483_MasiasMeza
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_17439213_v8_nS300_p483_MasiasMeza
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spelling todo:paper_17439213_v8_nS300_p483_MasiasMeza2023-10-03T16:31:45Z Galactic cosmic ray decreases associated with non-interacting magnetic clouds in the 23rd solar cycle Masías-Meza, J.J. Dasso, S. Cosmic rays Sun: coronal mass ejections (CMEs) Sun: magnetic fields Sudden Galactic Cosmic Ray (GCR) intensity decreases are related to the passage of Interplanetary Coronal Mass Ejections (ICMEs). These phenomena are also known as Forbush Decreases (FDs). The deepest FDs are associated with the passage of Magnetic Clouds (MCs). In this preliminary study we select "non-interacting" MCs associated with FDs observed from ground Neutron Monitors in the period 1996-2009, with the aim of reducing the complexity and the number of parameters involved in the GCR-MC interactions. We introduce a method to determine properties of the "ejecta component" of the FD. We analyze properties of the ejecta component in combination with properties of MCs. From the resulting selection of events, we find that those FDs containing ejecta components show stronger correlations with MC parameters than our total sample of events. © 2013 International Astronomical Union. Fil:Dasso, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. SER info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_17439213_v8_nS300_p483_MasiasMeza
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Cosmic rays
Sun: coronal mass ejections (CMEs)
Sun: magnetic fields
spellingShingle Cosmic rays
Sun: coronal mass ejections (CMEs)
Sun: magnetic fields
Masías-Meza, J.J.
Dasso, S.
Galactic cosmic ray decreases associated with non-interacting magnetic clouds in the 23rd solar cycle
topic_facet Cosmic rays
Sun: coronal mass ejections (CMEs)
Sun: magnetic fields
description Sudden Galactic Cosmic Ray (GCR) intensity decreases are related to the passage of Interplanetary Coronal Mass Ejections (ICMEs). These phenomena are also known as Forbush Decreases (FDs). The deepest FDs are associated with the passage of Magnetic Clouds (MCs). In this preliminary study we select "non-interacting" MCs associated with FDs observed from ground Neutron Monitors in the period 1996-2009, with the aim of reducing the complexity and the number of parameters involved in the GCR-MC interactions. We introduce a method to determine properties of the "ejecta component" of the FD. We analyze properties of the ejecta component in combination with properties of MCs. From the resulting selection of events, we find that those FDs containing ejecta components show stronger correlations with MC parameters than our total sample of events. © 2013 International Astronomical Union.
format SER
author Masías-Meza, J.J.
Dasso, S.
author_facet Masías-Meza, J.J.
Dasso, S.
author_sort Masías-Meza, J.J.
title Galactic cosmic ray decreases associated with non-interacting magnetic clouds in the 23rd solar cycle
title_short Galactic cosmic ray decreases associated with non-interacting magnetic clouds in the 23rd solar cycle
title_full Galactic cosmic ray decreases associated with non-interacting magnetic clouds in the 23rd solar cycle
title_fullStr Galactic cosmic ray decreases associated with non-interacting magnetic clouds in the 23rd solar cycle
title_full_unstemmed Galactic cosmic ray decreases associated with non-interacting magnetic clouds in the 23rd solar cycle
title_sort galactic cosmic ray decreases associated with non-interacting magnetic clouds in the 23rd solar cycle
url http://hdl.handle.net/20.500.12110/paper_17439213_v8_nS300_p483_MasiasMeza
work_keys_str_mv AT masiasmezajj galacticcosmicraydecreasesassociatedwithnoninteractingmagneticcloudsinthe23rdsolarcycle
AT dassos galacticcosmicraydecreasesassociatedwithnoninteractingmagneticcloudsinthe23rdsolarcycle
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