Contents

Cosmic Research

Vol. 64, No. 1, 2026

Sidereal-Diurnal Variations of Galactic Cosmic Rays of Heliospheric Origin

P. Yu. Gololobov and S. K. Gerasimova p. 1  abstract

Simulation of the Response of the KODIZ-2 Detector System to Electron (50 keV–5 MeV) and Proton (2–200 MeV) Fluxes

A. M. Sadykov, I. A. Zolotarev, V. V. Bengin, O. Yu. Nechaev, G. I. Antonyuk, V. I. Osedlo, A. V. Sazonova, and M. O. Lebedev p. 7  abstract

Projection Mappings for the 3D Matrix of the Number of Realizations for the Interplanetary Magnetic Field

N. A. Suhareva, J. A. Antonov, V. I. Zakharov, I. N. Myagkova, O. V. Shestakov, and J. S. Shugai p. 16  abstract

Solar Energetic Protons in the Interplanetary Medium and in Near-Earth Space on May 8–11, 2024

A. V. Dmitriev, G. A. Bazilevskaya, N. A. Vlasova, E. A. Ginzburg, E. I. Daibog, K. B. Kaportseva, Yu. I. Logachev, I. N. Myagkova, and A. V. Suvorova p. 38  abstract

Small-Sized EUV Telescopes for Solar Observations

I. P. Loboda, S. V. Kuzin, A. A. Pertsov, V. I. Chervinsky, A. A. Kholodilov, S. A. Bogachev, A. A. Reva, and A. S. Kirichenko p. 52  abstract

The Influence of Compressive and Rarefactive Ion-Acoustic Solitons on Ion Distribution Functions: Analytical Solutions for Arbitrary Amplitudes

F. M. Trukhachev, N. V. Gerasimenko, M. M. Vasiliev, and O. F. Petrov p. 66  abstract

Type II Interplanetary Bursts

G. P. Chernov and V. V. Fomichev p. 74  abstract

Features of the Luminosity Intensities of the Herzberg II O2 Bands in the Night Atmospheres of the Terrestrial Planets

O. V. Antonenko and A. S. Kirillov p. 87  abstract

Propulsionless Station Keeping of a Platform Tethered to a Sailcraft in the Sun–Earth Elliptical Restricted Three-Body System

Jiafu Liu, Shuqi Gao, Longfei Tan, Chengbo Zhong, and Kun Wang p. 95  abstract

Characteristics of Electric Currents and Fields Observed by MMS in the Magnetotail Plasma Sheet during Quiet and Active Periods

I. D. Petrovskii, M. V. Leonenko, E. E. Grigorenko, and L. M. Zelenyi p. 116  abstract

The Relation between Maximum Fluxes of Solar Protons and Electrons: Acceleration and/or Propagation?

V. A. Ozheredov, A. B. Struminsky, and I. Yu. Grigorieva p. 128  abstract

Solar Cyclicity Scenario in Light of a New Concept of Solar Activity and Its Long-Term Forecast

V. N. Ishkov p. 142  abstract

The First Results of Plasma Waves Observations in the Topside Ionosphere from the Ionosphere-M1, -M2 Satellites

S. A. Pulinets, K. G. Tsybulya, I. S. Danilov, and M. S. Pulinets p. 152  abstract