27-29 June 2023
National Research Nuclear University MEPhI
Europe/Moscow timezone

Application of coupling functions to analyze energy characteristics of Forbush decreases according to URAGAN muon hodoscope data

27 Jun 2023, 16:00
Hall of B-100 Lecture Room (National Research Nuclear University MEPhI)

Hall of B-100 Lecture Room

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


Polina Sukhova (NRNU MEPhI)


The purpose of the work is to investigate energy characteristics of Forbush decreases using coupling functions according to muon hodoscope URAGAN data. A coupling function shows relative contribution of primary cosmic rays with different energies to a count rate observed by a particular detector, so it is a basic tool to study energy characteristics of various modulation phenomena, such as Forbush effects.
A coupling function of a real detector depends on an integral multiplicity of secondary particles, effective area of the detector and the spectrum of primary particles. The muon multiplicity was determined by simulations in CORSIKA software package using FLUKA and QGSJET II models.
An algorithm for determining amplitudes of Forbush decreases was developed. In the work we present results of calculations of the muon hodoscope effective energies using coupling functions. Methods for determining spectral indices of Forbush decreases by relative variations, as well as by effective energies, are implemented.

Primary author

Polina Sukhova (NRNU MEPhI)


Ivan Astapov (MEPhI) Natalia Barbashina (MEPhI) Polina Kuzmenkova (National Research Nuclear University MEPhI)

Presentation Materials