J/ApJ/896/133ivo://CDS.VizieR/J/ApJ/896/133doi:10.26093/cds/vizier.18960133CDSLight C.Bindi V.Consolandi C.Corti C.Freeman C.Kuhlman A.,Palermo M.Wang S.2021-12-03T13:44:17Z2021-11-30T07:44:27ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frthe-sunInterplanetary coronal mass ejections (ICMEs) are eruptions of plasma that propagate outward through the heliosphere. ICMEs, and the shocks they drive, cause a sudden decrease in the cosmic-ray flux in their local area of the heliosphere, called a Forbush decrease (FD). A method of defining FDs is established, and an automated process for identifying FDs in neutron monitor (NM) data is created. The correlation between ICME properties and FD magnitude in 12 different NMs is examined for 91 ICME-associated FD events occurring from 2001 through 2019 August. A number of ICME properties show positive correlation with FD magnitude, with decreasing correlation strength as NM cutoff rigidity increases.2020ApJ...896..133Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/896/133CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/422/337 : Solar EUV Post-Eruptive Arcades (Tripathi+, 2004)J/A+A/440/373 : Earthbound interplanetary shocks (Howard+, 2005)J/ApJ/709/1238 : Solar Coronal Mass Ejection (Yeates+, 2010)J/ApJ/737/L35 : Pulsed Alfven waves in the solar wind (Gosling+, 2011)J/ApJ/759/69 : Solar electron events 1995-2005 with WIND/3DP (Wang+, 2012)J/MNRAS/456/1542 : Predicting CMEs transit times (Sudar+, 2016)J/ApJ/831/105 : Global energetics of solar flares. IV. CME (Aschwanden, 2016)J/ApJS/230/21 : Solar wind 3D magnetohydrodynamic simulation (Chhiber+, 2017)J/ApJS/239/12 : Small-scale magnetic flux ropes in the solar wind (Hu+, 2018)J/ApJ/868/124 : ICMEs events from 1998 to 2011 with ACE and WIND (Feng+, 2018)J/ApJ/871/93 : Solar wind speed from 5yr data with ACE (Wang+, 2019)J/ApJ/891/54 : Solar X-ray flares & associated CME widths (Ling+, 2020)J/ApJ/891/79 : Single storms and the related ICMEs from 1998-2011 (Li+, 2020)J/A+A/635/A79 : Pitch-angle distributions of solar wind (Carcaboso+, 2020)http://www.nmdb.eu/nest/ : NMDB Event Search Tool home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/896/133https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/896/133http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/896/133https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/896/133https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/896/133http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/896/133GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJ/896/133/table2Forbush decrease (FD) events marked in at least 4 neutron monitorsMCW[0/0.223] Dip size from Moscow neutron monitor (2)phys.size.radiusdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObsYear of the Forbush Decrease (1)time.epochINK[0/0.235] Dip size from Inuvik neutron monitor (2)phys.size.radiusdoubleNAN[0/0.231] Dip size from Nain neutron monitor (2)phys.size.radiusdoubleTHL[0/0.232] Dip size from Thule neutron monitor (2)phys.size.radiusdoubleATY[0/0.227] Dip size from Apatity neutron monitor (2)phys.size.radiusdoubleOLU[0/0.234] Dip size from Oulu neutron monitor (2)phys.size.radiusdoubleKGN[0/0.234] Dip size from Kerguelen neutron monitor (2)phys.size.radiusdoubleJGY[0/0.221] Dip size from JungfraujochIGY neutron monitor (2)phys.size.radiusdoubleJ64[0/0.224] Dip size from JungfraujochNM64 neutron monitor (2)phys.size.radiusdoubleHMN[0/0.184] Dip size from Hermanus neutron monitor (2)phys.size.radiusdoubleAAB[0/0.214] Dip size from AlmaAtaB neutron monitor (2)phys.size.radiusdoubleATH[0/0.168] Dip size from Athens neutron monitor (2)phys.size.radiusdoubleNev[4/12] Number of neutron monitors event found inmeta.numberintJ/ApJ/896/133/table3Dip size for Interplanetary coronal mass ejection (ICME) associated FD eventsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObsYear of the Forbush Decrease (1)time.epochINK[0/0.126] Dip size from Inuvik neutron monitor (2)phys.size.radiusdoubleNAN[0/0.129] Dip size from Nain neutron monitor (2)phys.size.radiusdoubleTHL[0/0.126] Dip size from Thule neutron monitor (2)phys.size.radiusdoubleATY[0/0.120] Dip size from Apatity neutron monitor (2)phys.size.radiusdoubleOLU[0/0.127] Dip size from Oulu neutron monitor (2)phys.size.radiusdoubleKGN[0/0.123] Dip size from Kerguelen neutron monitor (2)phys.size.radiusdoubleMCW[0/0.118] Dip size from Moscow neutron monitor (2)phys.size.radiusdoubleJGY[0/0.135] Dip size from JungfraujochIGY neutron monitor (2)phys.size.radiusdoubleJ64[0/0.134] Dip size from JungfraujochNM64 neutron monitor (2)phys.size.radiusdoubleHMN[0/0.103] Dip size from Hermanus neutron monitor (2)phys.size.radiusdoubleAAB[0/0.098] Dip size from AlmaAtaB neutron monitor (2)phys.size.radiusdoubleATH[0/0.084] Dip size from Athens neutron monitor (2)phys.size.radiusdoubleNev[5/12] Number of neutron monitors event found inmeta.numberintShock[0/1557788400] Shock arrival time (3)time.epochlongStart[0/1557820800] ICME cloud start time (3)time.epochlongEnd[0/1557968400] ICME cloud end time (3)time.epochlong