Solar-Terrestrial Physics Solar-Terrestrial Physics Solar-Terrestrial Physics 2500-0535 45267 10.12737/stp-81202204 Results of current research Results of current research Results of current research Peculiarities of sporadic variations in density and anisotropy of galactic cosmic rays in solar cycle 24 Peculiarities of sporadic variations in density and anisotropy of galactic cosmic rays in solar cycle 24 https://orcid.org/0000-0002-1348-4708 Григорьев Владислав Георгиевич Grigoryev Vladislav Georgievich grig@ikfia.ysn.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 https://orcid.org/0000-0003-1247-4513 Герасимова Сардаана Кимовна Gerasimova Sardaana Kimovna danagsk@mail.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 https://orcid.org/0000-0003-2184-8089 Гололобов Петр Юрьевич Gololobov Peter Yur'evich gpeter@ikfia.sbras.ru https://orcid.org/0000-0002-2343-1618 Стародубцев Сергей Анатольевич Starodubtsev Sergei Anatolyevich starodub@ikfia.ysn.ru

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 https://orcid.org/0000-0003-0011-6102 Зверев Антон Сергеевич Zverev Anton Sergeevich zverevas@ikfia.ysn.ru Институт космофизических исследований и аэрономии им. Ю.Г. Шафера СО РАН Якутск Россия Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS Yakutsk Russian Federation Институт космофизических исследований и аэрономии им. Ю.Г. Шафера СО РАН Якутск Россия Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS Yakutsk Russian Federation Институт космофизических исследований и аэрономии им. Ю.Г. Шафера СО РАН Якутск Россия Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS Yakutsk Russian Federation Институт космофизических исследований и аэрономии им. Ю.Г. Шафера СО РАН Якутск Россия Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS Yakutsk Russian Federation Институт космофизических исследований и аэрономии им. Ю.Г. Шафера СО РАН Якутск Россия Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS Yakutsk Russian Federation 25 03 2022 25 03 2022 8 1 34 38 14 07 2021 16 11 2021 https://zh-szf.ru/en/nauka/article/45267/view

In this work, we have processed data from the global network of neutron monitors and muon telescopes by the global survey method to study variations in the density and anisotropy of galactic cosmic rays during Forbush decreases observed in solar cycle 24. The simultaneous use of two different type detectors made it possible to examine the temporal dynamics of the angular distribution of cosmic rays in two different energy intervals. Besides, we have used measurements of the Yakutsk cosmic ray spectrograph after A.I. Kuzmin to assess the energy spectrum index during large disturbances of the interplanetary medium in this cycle. Analysis of the results obtained confirms our early statements that solar activity cycle 24 features an increased level of turbulence in the interplanetary magnetic field.

In this work, we have processed data from the global network of neutron monitors and muon telescopes by the global survey method to study variations in the density and anisotropy of galactic cosmic rays during Forbush decreases observed in solar cycle 24. The simultaneous use of two different type detectors made it possible to examine the temporal dynamics of the angular distribution of cosmic rays in two different energy intervals. Besides, we have used measurements of the Yakutsk cosmic ray spectrograph after A.I. Kuzmin to assess the energy spectrum index during large disturbances of the interplanetary medium in this cycle. Analysis of the results obtained confirms our early statements that solar activity cycle 24 features an increased level of turbulence in the interplanetary magnetic field.

 cosmic rays solar activity Forbush decreases energy spectra cosmic rays solar activity Forbush decreases energy spectra

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