24-26 June 2025
National Research Nuclear University MEPhI
Europe/Moscow timezone

March 24th, 2024 Forbush effect: cosmic ray variations spectra, anisotropy and magnetospheric current system parameters

Not scheduled
1h
National Research Nuclear University MEPhI

National Research Nuclear University MEPhI

Kashirskoe shosse 31, Moscow, Russian Federation, 115409
Poster Cosmo- and geophysical aspects of cosmic rays at the ground level Poster Session

Speaker

Иван Ковалев (ИСЗФ СО РАН)

Description

Using data of ground-level cosmic ray observations at the worldwide network of neutron monitors, Yakutsk muon telescope and URAGAN muon hodoscope (Moscow) and the spectrographic global survey method, we calculated cosmic ray variations spectra and anisotropy, as well as changes in the planetary system of rigidities of geomagnetic cutoff during the Forbush effect of March 24th, 2024. At the sites of muon component observations, mass-average air temperature was also obtained. We demonstrate that cosmic ray variations spectra can't be described by a power law function in a wide range of rigidities, We established, that during the aforementioned event, a "magnetic loop"-like structure of the interplanetary magnetic field was present at Earth's orbit. Based on the data on changes in the planetary system of rigidities of geomagnetic cutoff, we estimated parameters of the primary current systems of the magnetosphere during the March 24th, 2024 geomagnetic storm within an axisymmetric magnetosphere model.

Primary authors

Dr Sergei Olemskoy (ISTP SB RAS) Иван Ковалев (ИСЗФ СО РАН) Dr Valery Sdobnov (ISTP SB RAS) Dr Marina Kravtsova (ISTP SB RAS)

Presentation Materials

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