Characteristics of the Forbush decrease of 22 June 2015 measured by means of the muon hodoscope URAGAN

International Conference on Particle Physics and Astrophysics

Barbashina, N.S.^1 ; Ampilogov, N.V.^1 ; Astapov, I.I.^1 ; Borog, V.V.^1 ; Dmitrieva, A.N.^1 ; Petrukhin, A.A.^1 ; Sitko, O.A.^1 ; Shutenko, V.V.^1 ; Yakovleva, E.I.^1

National Research Nuclear University MEPhI, Moscow Engineering Physics Institute, Kashirskoe highway 31, Moscow

115409, Russia^1

关键词: Angular variation;    Anisotropy vector;    Cosmic-ray muons;    Forbush decrease;    Forbush effects;    Muon flux;    Muon hodoscopes;    Primary particle energy;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/675/3/032038/pdf
DOI  :  10.1088/1742-6596/675/3/032038

来源: IOP

【 摘 要 】

Results of the studies of cosmic ray muon flux variations during the powerful Forbush effect registered by the muon hodoscope URAGAN on June 22, 2015 are presented. From the muon flux angular distribution, the dependence of the intensity decrease amplitude on the primary particle energy in the region above 10 GeV has been obtained. The changes of this dependence at different phases of the Forbush effect development have been studied. Based on the analysis of spatial and angular variations of the muon flux, the values of the local anisotropy vector parameters, as well as unique muon snapshots (muonographies) have been obtained. The characteristics of the heliospheric and magnetospheric disturbances during the considered event have been analyzed.