Персона:
Астапов, Иван Иванович

Организационные подразделения

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Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.

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Астапов

Имя

Иван Иванович

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Теперь показываю 1 - 10 из 120

Только метаданные
Detection of TeV Emission from the Crab Nebula Using the First Two IACTs in TAIGA in Stereo Mode of Observation
(2023) Volchugov, P. A.; Astapov, I. I.; Kindin, V. V.; Kokoulin, R. P.; Kompaniets, K. G.; Pan, A.; Petrukhin, A. A.; Satyshev, I.; Yashin, I. I.; Астапов, Иван Иванович; Киндин, Виктор Владимирович; Кокоулин, Ростислав Павлович; Компаниец, Константин Георгиевич; Петрухин, Анатолий Афанасьевич; Яшин, Игорь Иванович
Только метаданные
An approach for identification of ultrahigh energy extensive air showers with scintillation detectors at TAIGA experiment
(2020) Chernukh, D.; Krykov, A.; Silaev, A.; Suvorkin, Y.; Astapov, I.; Kindin, V.; Kokoulin, R.; Kompaniets, K.; Petrukhin, A.; Yashin, I.; Астапов, Иван Иванович; Киндин, Виктор Владимирович; Кокоулин, Ростислав Павлович; Компаниец, Константин Георгиевич; Петрухин, Анатолий Афанасьевич; Яшин, Игорь Иванович
© 2020 IOP Publishing Ltd and Sissa Medialab.The TAIGA astroparticle observatory is under development at Tunka valley close to the Baikal Lake. This simulation study is concentrated on the ultrahigh energy extensive air showers (EAS) induced by gamma-quanta or proton in the range from 1 PeV to 10 PeV and zenith angle ranging 0°-45°. For this work, a set of air showers was created by CORSIKA software package. The list of useful secondary particles at the ground level is produced using the COAST library package. The interaction of secondary particles with the soil and detectors was simulated with GEANT4 package. The method based on neural network has been developed for the separation of EAS induced by gamma-quanta or proton. The air showers having energy ranging 1-10 PeV show more than 90% of identification efficiency of protons while keeping identification efficiency of gamma around 50% or more.
Только метаданные
Evaluation of Angular Resolution and Effective Area of the TAIGA-HiSCORE Installation Using Peripheral Stations
(2025) Samoliga, V.; Astapov, I.; Kindin, V.; Kompaniets, K.; Petrukhin, A.; Yashin, I.; Астапов, Иван Иванович; Киндин, Виктор Владимирович; Компаниец, Константин Георгиевич; Петрухин, Анатолий Афанасьевич; Яшин, Игорь Иванович
Только метаданные
Energy Spectrum and Mass Composition of Cosmic Rays from the Data of the Astrophysical Complex TAIGA
(2021) Prosin, V.; Bezyazeekov, P.; Borodin, A.; Bruckner, M.; Astapov, I.; Kindin, V.; Kokoulin, R.; Kompaniets, K.; Petrukhin, A.; Suvorkin, Y.; Tanaev, A.; Ternovoy, M.; Yashin, I.; Астапов, Иван Иванович; Киндин, Виктор Владимирович; Кокоулин, Ростислав Павлович; Компаниец, Константин Георгиевич; Петрухин, Анатолий Афанасьевич; Яшин, Игорь Иванович
© 2021, Pleiades Publishing, Ltd.Abstract: The differential energy spectrum of cosmic rays in the energy range of 3 × 1014–3 × 1018 eV and the corrected dependence of the mean depth of the maximum 〈Xmax〉 of an extensive air shower (EAS) inside the wide energy range of 1015–3 × 1017 eV have been obtained from the data of the Tunka-133 array for 7 years of operation (2009–2017) and the TAIGA-HiSCORE array for the 2019–2020 season of operation. At the extremely high energy, our results agree with the results of the Pierre Auger Observatory based on direct measurements of the maximum depth by the observation of fluorescent light from EAS. The recalculation from the 〈Xmax〉 to the parameter $$\left\langle {\ln A} \right\rangle $$, which characterizes the average composition of the primary cosmic rays, is presented.
Только метаданные
Estimation of the Light Component Spectrum of Cosmic Rays in the Energy Range of 200–10 000 TeV by the Hybrid Method
(2025) Sveshnikova, L. G.; Astapov, I. I.; Kindin, V. V.; Kokoulin, R. P.; Kompaniets, K. G.; Petrukhin, A. A.; Yashin, I. I.; Астапов, Иван Иванович; Киндин, Виктор Владимирович; Кокоулин, Ростислав Павлович; Компаниец, Константин Георгиевич; Петрухин, Анатолий Афанасьевич; Яшин, Игорь Иванович
Только метаданные
Experimental data of Muon hodoscope URAGAN for investigations of geoffective processes in the heliosphere
(2020) Kovylyaeva, A.; Astapov, I.; Dmitrieva, A.; Borog, V.; Osetrova, N.; Yashin, I.; Астапов, Иван Иванович; Дмитриева, Анна Николаевна; Борог, Владимир Викторович; Яшин, Игорь Иванович
© 2020, Ubiquity Press. All rights reserved.Muon hodoscope URAGAN continuously detects the angular distribution of muons in a wide range of zenith angles and allows one to obtain information about variations, both in the intensity and in angular characteristics of the muon flux, caused by active processes in the heliosphere, the magnetosphere and atmosphere of the Earth. Various parameters of the muon flux anisotropy and methods of calculation of these parameters are discussed. Real-time processing of a continuous flow of multidimensional data from the muon hodoscope URAGAN is quite a challenge. In the article, methods of formation and primary analysis of the data, their processing in real time and obtaining time series of various parameters of integral counting rate and angular anisotropy of the muon flux, which are important for the physical analysis of modulation processes of cosmic rays in the heliosphere, are presented.
Только метаданные
TAIGA-100 Astrophysical Complex—Status and Opportunities for Deployment in Russia
(2025) Ivanova, A. L.; Astapov, I. I.; Kindin, V. V.; Kompaniets, K. G.; Petrukhin, A. A.; Yashin, I. I.; Астапов, Иван Иванович; Киндин, Виктор Владимирович; Компаниец, Константин Георгиевич; Петрухин, Анатолий Афанасьевич; Яшин, Игорь Иванович
Открытый доступ
Investigation of local deformations of muon flux angular distribution during CME with GSE-mapping technique
(2019) Astapov, I. I.; Barbashina, N. S.; Dmitrieva, A. N.; Melnikova, I. A.; Osetrova, N. V.; Shutenko, V. V.; Yashin, I. I.; Астапов, Иван Иванович; Барбашина, Наталья Сергеевна; Дмитриева, Анна Николаевна; Шутенко, Виктор Викторович; Яшин, Игорь Иванович
© Published under licence by IOP Publishing Ltd.Coronal mass ejections (CME) have an impact on the flux of cosmic rays that penetrate the disturbed areas in the heliosphere and the near-terrestrial space. Unlike most ground-based cosmic ray detectors, the URAGAN muon hodoscope (MEPhI) allows to investigate both the integrated counting rate of registered particles and angular characteristics of the muon flux at the ground level. To select the local areas with statistically significant intensity changes, the angular distributions for the last hour and preceding it 24 hours corrected for the barometric effect are used. Angular distributions are smoothed, and the matrix of relative changes of the angular distribution in units of statistical errors is formed. The use of asymptotic directions calculated in advance, the angular cells of the matrix are mapped from the local coordinate system to the GSE coordinate system. The results of the study of GSE-mapping of local deformations of the angular distributions for different types of CMEs are discussed.
Только метаданные
Satellite-based Calibration of the TAIGA-HiSCORE Cerenkov Array by the LIDAR on-board CALIPSO
(2022) Porelli, A.; Astapov, I. I.; Kindin, V. V.; Kokoulin, R. P.; Kompaniets, K. G.; Petrukhin, A. A.; Yashin, I. I.; Астапов, Иван Иванович; Киндин, Виктор Владимирович; Кокоулин, Ростислав Павлович; Компаниец, Константин Георгиевич; Петрухин, Анатолий Афанасьевич; Яшин, Игорь Иванович
The wide-angle Air-Cerenkov array HiSCORE is a major component of the TAIGA facility in the Tunka valley, built for Gamma Astronomy and Cosmic Ray research. HiSCORE will contain 120 stations distributed over a 1 km2 area. Here, we report a multi-year detection of light flashes in HiSCORE from the LIDAR on-board the Sun-synchronous CALIPSO satellite, obtained in 2015-2021. The 100 mJ laser (532 nm) is observed up to distances beyond 10 km away from the ground light spot. This study complements first observations of a space-based LIDAR, performed in 2015-2017 with the 28 station HiSCORE prototype and the CATS-LIDAR on-board the International Space Station. We present HiSCORE calibration methods developed for the LIDAR events to optimize the pointing resolution of the array; and additionally perform a detailed array performance analysis over 6 years. The angular resolution for this special class of HiSCORE events - bright flashes, with a plane wave light front - is found to be ∼0.05◦, which is below the high-energy limit of ∼0.1◦ for air-showers. The satellite event sample allows to optimize rare event search strategies, like for optical flashes of astrophysical origin. We will also report on scheduled joint LIDAR observation by HiSCORE and TAIGA-IACTs, as well as optical ground instruments - to independently calibrate the absolute array-pointing precision. © Copyright owned by the author(s) under the terms of the Creative Commons.
Только метаданные
Status of the TAIGA Experiment: Gamma Astronomy
(2023) Sveshnikova, L.; Astapov, I.; Bezyazykov, P.; Blinov, A.; Kindin, V.; Kokoulin, R.; Kompaniets, K.; Petrukhin, A.; Yashin, I.; Астапов, Иван Иванович; Киндин, Виктор Владимирович; Кокоулин, Ростислав Павлович; Компаниец, Константин Георгиевич; Петрухин, Анатолий Афанасьевич; Яшин, Игорь Иванович