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49 results on '"Lidvansky, A. S."'

1. Upper Limits on the Isotropic Diffuse Flux of Cosmic PeV Photons from Carpet-2 Observations

Author

Dzhappuev, D. D., Afashokov, Yu. Z., Dzaparova, I. M., Dzhatdoev, T. A., Gorbacheva, E. A., Karpikov, I. S., Khadzhiev, M. M., Klimenko, N. F., Kudzhaev, A. U., Kurenya, A. N., Lidvansky, A. S., Mikhailova, O. I., Petkov, V. B., Podlesnyi, E. I., Pozdnukhov, N. A., Romanenko, V. S., Rubtsov, G. I., Troitsky, S. V., Unatlokov, I. B., Vaiman, I. A., Yanin, A. F., and Zhuravleva, K. V.

Published
2023
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4. The Carpet-3 EAS Array for Investigation of Gamma-Radiation with Energy \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\boldsymbol{E>100}$$\end{document} TeV

Author

Kudzhaev, A. U., Dzhappuev, D. D., Afashokov, Yu. Z., Dzaparova, I. M., Gorbacheva, E. A., Karpikov, I. S., Khadzhiev, M. M., Klimenko, N. F., Kurenya, A. N., Lidvansky, A. S., Mikhailova, O. I., Petkov, V. B., Romanenko, V. S., Rubtsov, G. I., Yanin, A. F., and Zhezher, Ya. V.

Published
2021
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8. The Recent Result of the Carpet-2 Facility and Status of the Carpet-3 Facility

Author

Romanenko, V. S., Afashokov, Yu. Z., Dzhappuev, D. D., Dzaparova, I. M., Gorbacheva, E. A., Karpikov, I. S., Khadzhiev, M. M., Klimenko, N. F., Kudzhaev, A. U., Kurenya, A. N., Lidvansky, A. S., Mikhailova, O. I., Petkov, V. B., Rubtsov, G. I., Troitsky, S. V., Unatlokov, I. B., Yanin, A. F., Zhezher, Ya. V., Zhuravleva, K. V., Dzhatdoev, T. A., Podlesnyi, E. I., and Vaiman, I. A.

Published
2022
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19. Search for astrophysical PeV gamma rays from point sources with Carpet-2

Author

Dzhappuev D. D., Dzaparova I. M., Gorbacheva E. A., Karpikov I. S., Khadzhiev M. M., Klimenko N. F., Kudzhaev A. U., Kurenya A. N., Lidvansky A. S., Mikhailova O. I., Petkov V. B., Ptitsyna K. V., Romanenko V. S., Rubtsov G. I., Troitsky S. V., Yanin A. F., and Zhezher Ya. V.

Subjects
Physics, QC1-999
Abstract

Early results of the search for Eγ > 1 PeV cosmic photons from point sources with the data of Carpet–2, an air-shower array equipped with a 175 m2 muon detector, are presented. They include 95% CL upper limits on PeV photon fluxes from stacked directions of high-energy IceCube neutrino events and from four predefined sources, Crab, Cyg X-3, Mrk 421 and Mrk 501. An insignificant excess of events from Mrk 421 will be further monitored. Prospects of the use of the upgraded installation, Carpet–3 (410 m2 muon detector), scheduled to start data taking in 2019, for searches of Eγ > 100 TeV photons, are briefly discussed.

Published
2019
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20. Baksan Air Shower Array: new prospects for old facility

Author

Lidvansky Alexander S.

Subjects
Physics, QC1-999
Abstract

The Carpet air shower array of the Baksan Neutrino Observatory is in operation for a long time, and it was modernized more than once. A short review of important results obtained with this array is given, as well as future prospects, since at the moment the new project called Carpet-3 is in progress, using the old array as its basis. The purpose of the new project is to substantially increase the muon detector area (quite soon up to 400 m2 and later up to 600 m2). This improvement will allow one to reach a very good sensitivity to diffuse cosmic photons by selecting muon-poor showers. The energy range where the new experiment will be competitive with other experiments of gamma-ray astronomy is near and below 100 TeV.

Published
2019
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40. Large-P T physics with cosmic-ray events

Author

Aglietta, M., Alessandro, B., Antonioli, P., Arneodo, F., Bergamasco, L., Bertaina, M., Fauth, A. Campos, Castellina, A., Chiavassa, A., Chudakov, A. E., Castagnoli, G. Cini, Piazzoli, B. D'Ettorre, Di Sciascio, G., Fulgione, W., Galeotti, P., Ghia, P. L., Iacovacci, M., Lidvansky, A. S., Mannocchi, G., Melagrana, C., Silva, N. Mengotti, Morello, C., Navarra, G., Nogima, H., Riccati, L., Saavedra, O., Trinchero, G. C., Tizengauzen, V. A., Turtelli, A., Vallania, P., and Vernetto, S.

Published
1995
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41. The Carpet-3 EAS Array for Investigation of Gamma-Radiation with Energy TeV.

Author

Kudzhaev, A. U., Dzhappuev, D. D., Afashokov, Yu. Z., Dzaparova, I. M., Gorbacheva, E. A., Karpikov, I. S., Khadzhiev, M. M., Klimenko, N. F., Kurenya, A. N., Lidvansky, A. S., Mikhailova, O. I., Petkov, V. B., Romanenko, V. S., Rubtsov, G. I., Yanin, A. F., and Zhezher, Ya. V.

Subjects
COSMIC rays, NEUTRINO detectors, NUCLEAR research, SCINTILLATION counters, THRESHOLD energy, GAMMA rays
Abstract

The Carpet-3 experiment for investigation of gamma radiation with energy above 100 TeV is currently being prepared at the Baksan Neutrino Observatory of the Institute for Nuclear Research, Russian Academy of Science. At present the plastic scintillation counters with a total continuous area of 410 m are installed in the muon detector (MD) underground tunnel, and they are totally equipped with electronics. The counters' gains and thresholds have been adjusted. Fifteen modules of shower detectors are placed on the surface of the MD absorber. Ten of them contain 9 standard plastic counters with an area of 1 m each. Also 24 modules without counters are arranged on the territory of the array. These modules will accomplish a surface part of the Carpet-3 array. The preliminary estimates show that the new array will have the best sensitivity to the flux of primary gamma rays with energy in region 100 TeV 1 PeV. The increased area of the surface part of the array gives a possibility to increase the area of location of the shower axis, thereby increasing the statistics of detected events and decreasing the energy threshold for primary cosmic radiation. The Carpet-3 experiment will start data taking at the end of 2021. [ABSTRACT FROM AUTHOR]

Published
2021
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47. Strong variations of cosmic ray intensity during thunderstorms and associated pulsations of the geomagnetic field.

Author

Kanonidi, K. Kh., Khaerdinov, N. S., Lidvansky, A. S., Sobisevich, L. E., and Vainio, R.

Subjects
COSMIC rays, THUNDERSTORMS, GEOMAGNETISM, STELLAR oscillations, POSITION sensitive particle detectors, MAGNETOMETERS, MAGNETIC fields
Abstract

Strong variations of the intensity of secondary cosmic rays during thunderstorms are found to be accompanied in some cases by very clear pulsations of the geomagnetic field. The experiment is carried out in the Baksan Valley, North Caucasus, the Carpet air shower array being used as a particle detector. Magnetic field measurements are made with high-precision magnetometers located deep underground in the tunnel of the Baksan Neutrino Observatory, several kilometers apart from the air shower array. [ABSTRACT FROM AUTHOR]

Published
2011
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