S. E. Pyatovsky
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The unusual events in X-ray emulsion chamber experiments Open
The article considers events recorded in an experiment with X-ray emulsion chambers (XREC) to study the trunks of extensive air showers (EAS) with energies of nuclei of primary cosmic radiation (PCR) E0 > 100 TeV, which currently have no e…
Irregularity in spectrum of the primary cosmic rays mass composition at an energy of ~ 10 PeV Open
Irregularity in spectrum of the primary cosmic rays (PCR) mass composition at an energy of ~ 10 PeV is considered. To assess changes of the PCR mass composition, the X-ray emulsion chamber (XREC) method and the halo-method based on the XEC…
The composition of cosmic rays according to the data on EAS cores Open
The main purpose of this work is to find the causes of the break of the cosmic ray spectrum at an energy of 3 PeV, which is called the knee. The solution of the problem is associated with the determination of the nuclear composition of cos…
Sources of primary cosmic rays forming the bump near E0=100 PeV Open
The comparative primary cosmic rays (PCR) comparative analysis by E0 and the spectra of variable stars by periods is carried out in order to establish the causes of irregularities in the spectrum of PCR by E0. The relationship between the …
Sources of primary cosmic rays Open
In the paper, a comparative primary cosmic rays (PCR) comparative analysis by $E_0$ and the spectra of variable stars by periods is carried out in order to establish the causes of irregularities in the spectrum of PCR by $E_0$. The study w…
View article: Erratum to: Several Articles in JETP Letters
Erratum to: Several Articles in JETP Letters Open
An Erratum to this paper has been published: https://doi.org/10.1134/S0021364022390011
Report on 2206.12165v3 Open
The main purpose of this work is to find the causes of the break of the cosmic ray spectrum at an energy of 3 PeV, which is called the knee.The solution of the problem is associated with the determination of the nuclear composition of cosm…
Strange Quark Matter and the Astrophysical Nature of Anomalous Effects in 1–100 PeV Cosmic Rays Open
The composition of cosmic rays is of decisive importance for the determination of reasons for change in the slope of the spectra of extensive air showers (knee) at energies of 1–100 PeV. The characteristics of the extensive air showers, wh…
The composition of cosmic rays according to the data on EAS cores Open
The main purpose of this work is to find the causes of the break of the cosmic ray spectrum at an energy of 3 PeV, which is called the knee. The solution of the problem is associated with the determination of the nuclear composition of cos…
Change in the mass composition of primary cosmic radiation at energies in the range of E0 = 1-100 PeV according to data of the KASCADE-Grande experiment Open
The change in the fluxes of the lightest and heaviest nuclei in the mass composition of primary cosmic radiation in the energy range of E0 = 1-100 PeV is analyzed on the basis of data from the KASCADE-Grande experiment. This analysis is pe…
The fraction of light nuclei in the mass composition of primary cosmic radiation at E0=1-100 PeV Open
The characteristics of extensive air showers that are sensitive to the mass composition of primary cosmic radiation are recorded in the EAS core. These characteristics include the parameters of the phenomenon of "halo". Studies have shown …
Study of the angular spectra of gamma and hadron families in the HADRON experiment Open
The zenith angular spectra of the hadron families detected in X-ray emulsion chamber of experiment HADRON (Tien-Shan) are analyzed. The deviations from the exponential absorption in the atmosphere are observed for the special choices of fa…
Origin of gamma-ray families accompanied by halos and detected in experiments with x-ray emulsion chambers Open
The phenomenon of gamma-ray families featuring halos that is observed in an experiment with x-ray emulsion chambers (XREC) in the Pamir experiment and in other XREC experiments is explained. The experimental properties of halos are analyze…
Some interesting phenomena observed in cosmic-ray experiments by means of X-ray emulsion technique at super accelerator energies Open
In the energy range above the PCR "knee" (5-1000 PeV), the emulsion chamber data exhibit some new features which are hard to explain in the framework of the Standard Model. In this survey the results of a systematic quest of some new and e…
Proton Fraction in PCR Mass Composition at Energies of 10^15-10^17 eV (Experiment «Pamir») Open
The fraction of halo events among gamma-hadron families with SUM(Egamma) > 500 TeV is analyzed. The comparison of experimental data and Monte-Carlo simulations by MC0 code of quark-gluon string model under various assumptions on the PCR ma…
Proton Fraction in PCR Mass Composition at Energies of 10^15-10^17 eV (Experiment {\guillemotleft}Pamir{\guillemotright}) Open
The fraction of halo events among gamma-hadron families with SUM(Egamma) > 500 TeV is analyzed. The comparison of experimental data and Monte-Carlo simulations by MC0 code of quark-gluon string model under various assumptions on the PCR ma…
The Protons in Primary Cosmic Rays in the Energy Range 10^15-10^17 eV According to Data from the PAMIR Experiment Open
Adjusted data on the fraction of protons in the mass composition of primary cosmic rays (PCRs) in the energy range of 10^15-10^17 eV are presented. Adjustments are made according to detailed calculations of the response of the X-ray emulsi…
gamma-Families with Halos Observed by X-ray Emulsion Chamber in EAS and the Estimate of the p+He Fraction in Primary Cosmic Rays at E0 = 1-100 PeV Open
The experimental gamma-families in which events called "halos" were detected using X-ray emulsion chambers (XRECs) of the PAMIR experiment are described. The halo nature is explained within the standard model of nuclear interactions. Based…
gamma-Families with Halos Observed by X-ray Emulsion Chamber in EAS and the Estimate of the p+He Fraction in Primary Cosmic Rays at E0 = 1-100 PeV Open
The experimental gamma-families in which events called halos were detected using X-ray emulsion chambers (XRECs) of the PAMIR experiment are described. The halo nature is explained within the standard model of nuclear interactions. Based o…
Revised data on gamma-families observed in X-ray emulsion chambers of the Experiment PAMIR Open
Recently essential efforts were made to improve measurement routine with X-ray films exposed in the X-ray emulsion chambers at the Pamirs. Analysis of X-ray emulsion response upon recorded events show that gamma-family energy and intensity…
Revised data on gamma-families observed in X-ray emulsion chambers of the Experiment PAMIR Open
Recently essential efforts were made to improve measurement routine with X-ray films exposed in the X-ray emulsion chambers at the Pamirs. Analysis of X-ray emulsion response upon recorded events show that gamma-family energy and intensity…
Method for determining angles in X-ray emulsion chambers (XRECs) (ADRON experiment) Open
Paper presents an analysis of the measurement procedure of the zenith and azimuth angles υ and φ in theX-ray emulsion chambers (XREC) of ADRON and PAMIR experiments. Earlier, asymmetry wasobserved in distributions of azimuth angles of gamm…
Investigation of EAS cores Open
The development of nuclear-electromagnetic cascade models in air in the late forties have shown informational content of the study of cores of extensive air showers (EAS). These investigations were the main goal in different experiments wh…
Gamma-ray families with halos: Main characteristics and possibilities of using them to estimate the p+He fraction in the mass composition of cosmic rays at energies 1–100 PeV Open
Characteristics of γ-ray families with halos (XREC, Pamir) and data of experiments with EAS are analyzed to estimate the proton and helium (p+He) fractions in the primary cosmic radiation at E0 = 1–100 PeV. It is shown that at energies E0 …
Gamma-ray families with halos: Main characteristics and possibilities of using them to estimate the p+He fraction in the mass composition of cosmic rays at energies 1–100 PeV Open
Characteristics of γ-ray families with halos (XREC, Pamir) and data of experiments with EAS are analyzed to estimate the proton and helium (p+He) fractions in the primary cosmic radiation at E0 = 1–100 PeV. It is shown that at energies E0 …
Investigation of EAS cores Open
The development of nuclear-electromagnetic cascade models in air in the late forties have shown informational content of the study of cores of extensive air showers (EAS). These investigations were the main goal in different experiments wh…