141 results on '"V. B. Petkov"'
Search Results
2. Neutrino Burst Monitoring in Our Galaxy
- Author
-
Yu. F. Novoseltsev, I. M. Dzaparova, M. M. Kochkarov, A. N. Kurenya, R. V. Novoseltseva, V. B. Petkov, P. S. Striganov, I. B. Unatlokov, and A. F. Yanin
- Subjects
General Physics and Astronomy - Published
- 2022
3. LIDAR Detection of Aerosols in the Tunnel above the Elbrus Volcano Chamber
- Author
-
S. M. Pershin, A. L. Sobisevich, V. A. Zavozin, M. Ya. Grishin, V. N. Lednev, V. S. Makarov, V. B. Petkov, Ya. Ya. Ponurovskii, A. N. Fedorov, and D. G. Artemova
- Subjects
Electronic, Optical and Magnetic Materials - Published
- 2022
4. Searching for Neutrino and Ultra-High-Energy Gamma-Ray Counterparts of the GCN Alerts
- Author
-
I. B. Unatlokov, Yu. Z. Afashokov, I. M. Dzaparova, D. D. Dzhappuev, E. A. Gorbacheva, M. M. Khadzhiev, M. G. Kostyuk, M. M. Kochkarov, A. U. Kudzhaev, A. N. Kurenya, O. I. Mikhailova, Yu. F. Novoseltsev, R. V. Novoseltseva, V. B. Petkov, V. S. Romanenko, P. S. Striganov, and A. F. Yanin
- Subjects
Nuclear and High Energy Physics ,Atomic and Molecular Physics, and Optics - Published
- 2021
5. The Carpet-3 EAS Array for Investigation of Gamma-Radiation with Energy $$\boldsymbol{E>100}$$ TeV
- Author
-
A. U. Kudzhaev, D. D. Dzhappuev, Yu. Z. Afashokov, I. M. Dzaparova, E. A. Gorbacheva, I. S. Karpikov, M. M. Khadzhiev, N. F. Klimenko, A. N. Kurenya, A. S. Lidvansky, O. I. Mikhailova, V. B. Petkov, V. S. Romanenko, G. I. Rubtsov, A. F. Yanin, and Ya. V. Zhezher
- Subjects
Nuclear and High Energy Physics ,Atomic and Molecular Physics, and Optics - Published
- 2021
6. Searching for Muon Neutrinos from Regions of the Localization of Gravitational-Wave Events
- Author
-
M. M. Kochkarov, A. F. Yanin, I. B. Unatlokov, M. G. Kostyuk, Yu. F. Novoseltsev, A. N. Kurenya, R. V. Novoseltseva, I. M. Dzaparova, V. B. Petkov, and P. S. Striganov
- Subjects
010302 applied physics ,Physics ,Scintillation ,Muon ,Physics::Instrumentation and Detectors ,010308 nuclear & particles physics ,Gravitational wave ,Astrophysics::High Energy Astrophysical Phenomena ,Hadron ,Astrophysics::Instrumentation and Methods for Astrophysics ,General Physics and Astronomy ,Astronomy ,01 natural sciences ,Coincidence ,LIGO ,law.invention ,Telescope ,General Relativity and Quantum Cosmology ,law ,0103 physical sciences ,High Energy Physics::Experiment ,Neutrino - Abstract
Data from the Baksan Underground Scintillation Telescope were used to search for muon neutrinos and antineutrinos with energies above 1 GeV in coincidence with gravitational-wave events detected by the Advanced LIGO and Advanced Virgo observatories in three observing periods. Limits on the integral fluxes of muon neutrinos and antineutrinos from gravitational wave sources were obtained. A way of searching for neutrino events from LIGO/Virgo alerts is presented. An algorithm for data processing and finding coincidences between neutrino and gravitational-wave events in real time is described.
- Published
- 2021
7. Disturbance of a Glow in the Night Sky in Clear Weather at Middle Latitudes
- Author
-
N. S. Khaerdinov, D. D. Dzhappuev, K. Kh. Kanonidi, A. U. Kudzhaev, A. N. Kurenya, A. S. Lidvansky, V. B. Petkov, and M. N. Khaerdinov
- Subjects
General Physics and Astronomy - Published
- 2021
8. Carpet-3 Experiment: Searching for Extrahigh-Energy Gamma Rays from Astrophysical Objects
- Author
-
M. M. Hadzhiev, A. S. Lidvansky, E. A. Gorbacheva, I. B. Unatlokov, D. D. Dzhappuev, I.S. Karpikov, Yu. Z. Afashokov, K.V. Zhuravleva, O. I. Mikhailova, A. F. Yanin, Sergey Troitsky, V. B. Petkov, A. N. Kurenya, N. F. Klimenko, V. S. Romanenko, I. M. Dzaparova, A. U. Kudzhaev, Y. Zhezher, and Grigory Rubtsov
- Subjects
010302 applied physics ,Physics ,COSMIC cancer database ,Photon ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,Astrophysics::Instrumentation and Methods for Astrophysics ,Gamma ray ,General Physics and Astronomy ,Astronomy ,Cosmic ray ,01 natural sciences ,LIGO ,Primary (astronomy) ,Observatory ,0103 physical sciences ,Neutrino - Abstract
The Carpet-3 array at the Baksan Neutrino Observatory is designed to detect extensive air showers generated by primary cosmic rays of more than 100 TeV in energy. The main aim is to search for cosmic extrahigh-energy gamma rays. In this work, we describe the current state of the facility and the results from searching for extrahigh-energy photons from regions of the localization of candidates for gravitational-wave events detected by LIGO/Virgo during the third observational period.
- Published
- 2021
9. Monitoring Supernova Neutrino Bursts at the Baksan Underground Scintillation Telescope
- Author
-
P. S. Striganov, M. M. Kochkarov, A. F. Yanin, A. N. Kurenya, Yu. F. Novoseltsev, I. B. Unatlokov, R. V. Novoseltseva, I. M. Dzaparova, and V. B. Petkov
- Subjects
010302 applied physics ,Physics ,Scintillation ,Physics::Instrumentation and Detectors ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,General Physics and Astronomy ,Astronomy ,01 natural sciences ,Galaxy ,law.invention ,Telescope ,Supernova ,law ,0103 physical sciences ,High Energy Physics::Experiment ,Neutrino ,Astrophysics::Galaxy Astrophysics - Abstract
The Baksan Underground Scintillation Telescope has been used to search for neutrino bursts since the mid-1980s. We use two parts of the telescope with a total mass of 240 tons as a target. The actual observing time from June 30, 1980, to June 30, 2020, was 34.4 years. No neutrino burst candidate events were detected during this period, placing an upper bound of 0.067 g−1 on the average frequency of core collapse supernovas in the Galaxy at a 90% confidence level.
- Published
- 2021
10. Lidar Sensing of Multilayer Fog Evolution in the Inclined Tunnel of the Baksan Neutrino Observatory
- Author
-
V. V. Kuzminov, Sergey M. Pershin, Alexander Fedorov, V. B. Petkov, M. Ya. Grishin, A. V. Myasnikov, V. N. Lednyov, V. S. Makarov, A. V. Tyurin, and V.A. Zavozin
- Subjects
Physics ,Scintillation ,Physics::Instrumentation and Detectors ,business.industry ,Laser ,Avalanche photodiode ,Photon counting ,Electronic, Optical and Magnetic Materials ,law.invention ,Telescope ,Lidar ,Optics ,law ,Observatory ,Neutrino ,business ,Physics::Atmospheric and Oceanic Physics - Abstract
for the first time to our knowledge, multilayer fog evolution is detected using a compact backscattering lidar. Sensing of aerosols was performed in an inclined tunnel (50 m long) of the scintillation telescope of the Baksan Neutrino Observatory. The lidar was assembled on a GaAs diode laser (λ = 910 nm) with an eye-safe radiation intensity (< 1 µJ/cm2) and a high pulse repetition rate (to 10 kHz) with a record short duration (∼3 ns) when pumped with current pulses. A silicon avalanche photodiode operating in the gated photon counting mode was used as a receiver.
- Published
- 2019
11. A new Baksan Large Neutrino Telescope: the project's status
- Author
-
Dmitry Voronin, Oleg Smirnov, Andrei Sidorenkov, V. N. Gavrin, Evgeniy Veretenkin, T. V. Ibragimova, Arslan Lukanov, B. K. Lubsandorzhiev, Evgeniy Yanovich, V. V. Kuzminov, V. B. Petkov, A. N. Fazliakhmetov, A. M. Gangapshev, Nikita Ushakov, Mahti Kochkarov, V. V. Kazalov, Galina Novikova, Yuri Malyshkin, and A. A. Shikhin
- Subjects
Physics ,Neutrino telescope ,Astronomy - Published
- 2021
12. JOINT ANALYSIS OF DATA FROM NEUTRINO DETECTORS LVD AND BUST DURING THE EVENT GW170817
- Author
-
M. M. Boliev, N. Yu. Agafonova, A. S. Malgin, R.V. Novoseltseva, M. M. Kochkarov, I. M. Dzaparova, Yu. F. Novoseltsev, A. N. Kurenya, V. V. Ashikhmin, O. G. Ryazhskaya, P. S. Striganov, E. A. Dobrynina, V. B. Petkov, I. R. Shakiryanova, and A. F. Yanin
- Subjects
Neutrino detector ,Bust ,Computer science ,Event (relativity) ,Astronomy ,Joint analysis - Published
- 2021
13. The Upper Limit on Isotropic Flux of Diffuse Gamma Rays with Energy Above 700 TeV as Measured by the Carpet-2 Air Shower Array
- Author
-
A. S. Lidvansky, I. M. Dzaparova, O. I. Mikhailova, A. F. Yanin, A. N. Kurenya, A. U. Kudzhaev, N. F. Klimenko, V. B. Petkov, E. A. Gorbacheva, D. D. Dzhappuev, and M. M. Khadziev
- Subjects
010302 applied physics ,Physics ,COSMIC cancer database ,Physics::Instrumentation and Detectors ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,Hadron ,Detector ,Gamma ray ,General Physics and Astronomy ,Flux ,01 natural sciences ,Nuclear physics ,Air shower ,Observatory ,0103 physical sciences ,High Energy Physics::Experiment ,Neutrino - Abstract
An experiment for measuring the flux of cosmic diffuse gamma rays with energies higher than 100 TeV (the Carpet-3 project) is under preparation at the Baksan Neutrino Observatory. The experiment suggests to increase areas of both the muon detector and the surface shower detectors. The experiment’s sensitivity to the showers initiated by primary gamma rays is estimated in this paper for different configurations of the array. In addition, preliminary estimates of the upper limit on diffuse gamma rays with energy above 700 TeV are presented. They are derived from experimental data of the Carpet-2 array (previous version of the experiment) for the net exposure of 9.2 years of observation.
- Published
- 2019
14. The Search for Neutrino Bursts at the Baksan Underground Scintillation Telescope: 37 Years of Exposure
- Author
-
Yu. F. Novoseltsev, I. M. Dzaparova, R. V. Novoseltseva, A. N. Kurenya, M. M. Kochkarov, V. B. Petkov, P. S. Striganov, M. M. Boliev, and A. F. Yanin
- Subjects
010302 applied physics ,Physics ,Scintillation ,Physics::Instrumentation and Detectors ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,Milky Way ,General Physics and Astronomy ,Astronomy ,01 natural sciences ,law.invention ,Telescope ,Supernova ,law ,0103 physical sciences ,Neutrino - Abstract
The search for neutrino bursts at the Baksan Underground Scintillation Telescope began in the middle of 1980. Two parts of the setup with a total mass of 240 t are used as the target. The actual observational time accumulated in the period from June 30, 1980, to December 31, 2017, is 32.1 years. No neutrino burst candidate events were detected, yielding the following upper bound for the mean rate of core-collapse supernovas in the Milky Way: 0.072 yr−1 (90% CL).
- Published
- 2019
15. Developing a New Data Acquisition System for the Baksan Underground Scintillation Telescope
- Author
-
I. M. Dzaparova, A. F. Yanin, V. B. Petkov, M. M. Boliev, E. A. Gorbacheva, A. N. Kurenya, and M. M. Kochkarov
- Subjects
Scintillation ,business.industry ,Computer science ,General Physics and Astronomy ,GeneralLiterature_MISCELLANEOUS ,law.invention ,Telescope ,Data acquisition ,Analog signal ,Hodoscope ,Gate array ,Bust ,law ,business ,Field-programmable gate array ,Computer hardware - Abstract
The Baksan Underground Scintillation Telescope (BUST) is located in the North Caucasus in an underground laboratory at an effective depth of 850 m.w.e. The BUST began working in 1977, and the installation is still in operation. The successful design of the BUST allows it to be used to solve a number of problems in astrophysics and particle physics. The new data acquisition system is designed to record and analyze experimental data with greatly improved measurement characteristics of digital and analog signals. The data acquisition system is based on the VME interface and provides complete compatibility with existing low-level BUST recording electronics. The hodoscope of pulse channels was completely redeveloped and implemented on field-programmed gate array (FPGA) and LVDS chips.
- Published
- 2019
16. Carpet-2 Search for PeV Gamma Rays Associated with IceCube High-Energy Neutrino Events
- Author
-
I.S. Karpikov, V. S. Romanenko, N. F. Klimenko, Sergey Troitsky, I. M. Dzaparova, A. F. Yanin, Y. Zhezher, Grigory Rubtsov, A. U. Kudzhaev, A. N. Kurenya, M. M. Khadzhiev, V. B. Petkov, O. I. Mikhailova, A. S. Lidvansky, E. A. Gorbacheva, D. D. Dzhappuev, and K. V. Ptitsyna
- Subjects
High Energy Astrophysical Phenomena (astro-ph.HE) ,Physics ,High energy ,Photon ,Physics and Astronomy (miscellaneous) ,Physics::Instrumentation and Detectors ,Astrophysics::High Energy Astrophysical Phenomena ,Hadron ,Gamma ray ,FOS: Physical sciences ,Physics::Optics ,01 natural sciences ,010305 fluids & plasmas ,Nuclear physics ,Primary (astronomy) ,0103 physical sciences ,High Energy Physics::Experiment ,Neutrino ,Astrophysics - High Energy Astrophysical Phenomena ,010306 general physics ,Muon detector - Abstract
Carpet-2 is an air-shower array at Baksan Valley, Russia, equipped with a large-area (175 m^2) muon detector, which makes it possible to separate primary photons from hadrons. We report the first results of the search for primary photons with energies E_\gamma>1 PeV, directionally associated with IceCube high-energy neutrino events, in the data obtained in 3080 days of Carpet-2 live time., Comment: 6 pages, 2 figures. V2: minor copy-editing changes. Accepted by JETP Letters
- Published
- 2019
17. Measurement of the Characteristics of Neutrino Flux from a Supernova Explosion at the Baksan Underground Scintillation Telescope
- Author
-
A. N. Kurenya, M. M. Kochkarov, R. V. Novoseltseva, Yu. F. Novoseltsev, P. S. Striganov, M. M. Boliev, A. F. Yanin, V. B. Petkov, I. M. Dzaparova, and I. B. Unatlokov
- Subjects
Physics ,Telescope ,Scintillation ,Supernova ,law ,Flux ,Astronomy ,Neutrino ,law.invention - Published
- 2020
18. A Complex for Multimessenger Observations from Gamma Rays to Radio Range and Neutrinos
- Author
-
S. A. Naroenkov, Sergey Bondar, Sergei V. Karpov, V. S. Romanenko, A. F. Yanin, L. N. Volvach, N. Orekhova, Yu. F. Novoseltsev, A. V. Sergev, I. M. Dzaparova, E. Katkova, G. Beskin, A. N. Kurenya, A. A. Shlyapnikov, Anton Biryukov, I. M. Unatlokov, M. M. Kochkarov, V. Sasyuk, A. Perkov, V. B. Petkov, D. D. Dzhappuev, M. A. Nalivkin, I. S. Savanov, O. I. Mikhailova, E. Ivanov, and R. V. Novoseltseva
- Subjects
Physics ,Range (particle radiation) ,Gamma ray ,Astrophysics ,Neutrino ,Methods observational - Published
- 2020
19. Optical observations reveal strong evidence for high-energy neutrino progenitor
- Author
-
N. M. Budnev, E. Minkina, V. Topolev, Markus Böttcher, F. Balakin, B. van Soelen, V. B. Petkov, D. Vlasenko, N. V. Tyurina, A. G. Tlatov, R. Rebolo, O. A. Gress, F. Podesta, E. S. Gorbovskoy, A. Kuznetsov, Soebur Razzaque, K. Zhirkov, A. Pozdnyakov, R. Podesta, A. Gabovich, S. I. Svertilov, Valeria Grinshpun, V. Yurkov, A. Chasovnikov, V. M. Lipunov, V. G. Kornilov, D. Buckley, Yu. Sergienko, H. Levato, P. Balanutsa, D. Kuvshinov, Miquel Serra-Ricart, C. E. Lopez, V. Vladimirov, Ilya Gorbunov, and 24420530 - Böttcher, Markus
- Subjects
010504 meteorology & atmospheric sciences ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,Applied Physics (physics.app-ph) ,01 natural sciences ,High Energy Physics - Experiment ,Automatic patrol telescopes ,High Energy Physics - Experiment (hep-ex) ,Observatory ,0103 physical sciences ,Blazar ,Automated telescopes ,010303 astronomy & astrophysics ,0105 earth and related environmental sciences ,Astroparticle physics ,Physics ,High Energy Astrophysical Phenomena (astro-ph.HE) ,Active galactic nuclei ,Ultra-high-energy cosmic radiation ,Black holes ,Astrophysics::Instrumentation and Methods for Astrophysics ,Astronomy ,Astronomy and Astrophysics ,Physics - Applied Physics ,Light curve ,Robotic telescope ,Neutrino detector ,Space and Planetary Science ,Neutrino astronomy ,Neutrino ,Astrophysics - High Energy Astrophysical Phenomena ,Particle astrophysics ,High energy astrophysics ,Blazars - Abstract
We present the earliest astronomical observation of a high energy neutrino error box in which its variability was discovered after high-energy neutrinos detection. The one robotic telescope of the MASTER global international network (Lipunov et al. 2010) automatically imaged the error box of the very high-energy neutrino event IceCube-170922A. Observations were carried out in minute after the IceCube-170922A neutrino event was detected by the IceCube observatory at the South Pole. MASTER found the blazar TXS 0506+056 to be in the off-state after one minute and then switched to the on-state no later than two hours after the event. The effect is observed at a 50-sigma significance level. Also we present own unique 16-years light curve of blazar TXS 0506+056 (518 data set)., 17 pages, 3 figures, 1 Table accepted to The Astrophysical Journal Letters
- Published
- 2020
20. Search for Neutrino Signals from Regions of Localization of Gravitational-Wave Events
- Author
-
I. M. Dzaparova, R. V. Novoseltseva, P. S. Striganov, M. M. Kochkarov, A. F. Yanin, Yu. F. Novoseltsev, I. B. Unatlokov, A. N. Kurenya, and V. B. Petkov
- Subjects
Physics ,Gravitational wave ,Astrophysics ,Neutrino - Published
- 2020
21. Search for Local Neutrino Sources with the Baksan Underground Scintillation Telescope
- Author
-
V. B. Petkov, V. V. Volchenko, I. M. Dzaparova, M. M. Kochkarov, M. M. Boliev, R. V. Novoseltseva, A. V. Butkevich, P. S. Striganov, and A. F. Yanin
- Subjects
Physics ,Nuclear and High Energy Physics ,Scintillation ,Muon ,Physics::Instrumentation and Detectors ,Astrophysics::High Energy Astrophysical Phenomena ,High Energy Physics::Phenomenology ,Astrophysics::Instrumentation and Methods for Astrophysics ,Astronomy ,01 natural sciences ,law.invention ,Telescope ,law ,0103 physical sciences ,High Energy Physics::Experiment ,Neutrino ,010306 general physics ,010303 astronomy & astrophysics ,Zenith - Abstract
Local sources of muon neutrinos are searched for with the Baksan underground scintillation telescope. In the period from December 1978 through May 2017 (live-time 31.05 yr), 1635 neutrino events with zenith angles between 95° and 180° have been detected. No local sources of muon neutrinos with energies over 1 GeV have been found. Upper limits on the fluxes of muon neutrinos emitted by known astrophysical objects are established.
- Published
- 2018
22. Development of the Scintillation Track Detector Based on Multichannel Photodetectors
- Author
-
I. M. Dzaparova, A. F. Yanin, E. A. Gorbacheva, A. N. Kurenya, V. B. Petkov, and A. V. Sergeev
- Subjects
Physics ,Nuclear and High Energy Physics ,Scintillation ,Physics::Instrumentation and Detectors ,010308 nuclear & particles physics ,business.industry ,Track (disk drive) ,Detector ,Photodetector ,Scintillator ,01 natural sciences ,030218 nuclear medicine & medical imaging ,Relativistic particle ,03 medical and health sciences ,0302 clinical medicine ,Silicon photomultiplier ,Optics ,0103 physical sciences ,High Energy Physics::Experiment ,Neutrino ,business - Abstract
Matrices of silicon photomultipliers (SiPM) are promising multichannel photosensors for scintillation detectors. They can be used to construct tracks of relativistic particles inside detectors. The first detectors based on the direct contact of the SiPM matrices with the surface of the scintillation detector and with the application of Fresnel lenses are developed; promising variants of large detectors for neutrino astrophysics and geophysics are proposed.
- Published
- 2018
23. Hardware and Software for the Data Aсquisition Systems of the Andyrchi and Carpet-3 Air Shower Facilities
- Author
-
V. B. Puzin, I. S. Savanov, A. N. Kurenya, D. D. Dzhappuev, M. A. Nalivkin, V. B. Petkov, I. M. Dzaparova, A. F. Yanin, A. V. Sergeev, and S. A. Naroenkov
- Subjects
010302 applied physics ,Physics ,Nuclear and High Energy Physics ,010308 nuclear & particles physics ,business.industry ,Astrophysics::High Energy Astrophysical Phenomena ,Astrophysics::Instrumentation and Methods for Astrophysics ,01 natural sciences ,Optical telescope ,Automated data ,Data transmission systems ,Software ,Data acquisition ,Air shower ,Observatory ,0103 physical sciences ,Transient (computer programming) ,business ,Computer hardware - Abstract
In this work, modernized data acquisition systems of the Andyrchi and Carpet-3 shower facilities with automated data preprocessing and data transmission systems to the observatory of the Terskol Branch of the Institute of Astronomy are described. To solve joint problems on searching transient sources, data from the Andyrchi and Carpet facilities are processed and transmitted to the observatory of the Terskol Branch of the Institute of Astronomy in the form of astronomic coordinates for observations with an optical telescope.
- Published
- 2018
24. Search for Neutrino Bursts at the Baksan Underground Scintillation Telescope
- Author
-
V. B. Petkov, Yu. F. Novoseltsev, M. M. Boliev, R. V. Novoseltseva, I. M. Dzaparova, A. N. Kurenya, G. V. Volchenko, A. F. Yanin, M. M. Kochkarov, and V. I. Volchenko
- Subjects
Physics ,Nuclear and High Energy Physics ,Scintillation ,Observation time ,010308 nuclear & particles physics ,Astronomy ,Astrophysics ,01 natural sciences ,Upper and lower bounds ,Galaxy ,law.invention ,Telescope ,Stellar core ,Supernova ,law ,0103 physical sciences ,Neutrino ,010303 astronomy & astrophysics - Abstract
The Baksan Underground Scintillation Telescope has been operating under the program of searching for neutrino bursts since the middle of 1980. The target is two parts of the facility with the total mass of 240 t. The actual observation time over the period from June 30, 1980, to December 31, 2016, is 31.27 years. No candidate for the stellar core collapse has been detected during the observation period. The upper bound for the mean rate of the supernova core collapse in our Galaxy is 0.074 y $$^{{ - 1}}$$ (90% CL).
- Published
- 2018
25. Prototype Scintillation Detector with Photosensors Based on Silicon Photomultiplier Arrays
- Author
-
A. N. Kurenya, I. M. Dzaparova, E. A. Gorbacheva, A. F. Yanin, A. V. Sergeev, and V. B. Petkov
- Subjects
Physics ,Nuclear and High Energy Physics ,Physics::Instrumentation and Detectors ,010308 nuclear & particles physics ,business.industry ,Detector ,ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION ,Photodetector ,Scintillator ,01 natural sciences ,Optics ,Silicon photomultiplier ,0103 physical sciences ,010306 general physics ,business - Abstract
A prototype scintillation detector with photosensors based on silicon photomultiplier (SiPM) arrays is described. Such a method of data-taking will make it possible to obtain an image (snapshot) of the event and, thereby, to separate different types of events (particle interactions) in the detector. For this purpose, the characteristics of SiPMs have been studied and a calibration measurement technique developed.
- Published
- 2018
26. The Carpet-3 Multipurpose Air Shower Array of the Baksan Neutrino Observatory of the Institute for Nuclear Research, Russian Academy of Sciences
- Author
-
A. S. Lidvansky, G. V. Volchenko, A. F. Yanin, E. A. Gorbacheva, D. D. Dzhappuev, A. N. Kurenya, I. M. Dzaparova, N. F. Klimenko, V. B. Petkov, V. I. Volchenko, M. M. Khadzhiev, A. U. Kudzhaev, and O. I. Mikhailova
- Subjects
Physics ,Nuclear and High Energy Physics ,COSMIC cancer database ,Physics::Instrumentation and Detectors ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,Gamma ray ,Astronomy ,Scintillator ,01 natural sciences ,Air shower ,Observatory ,0103 physical sciences ,Mathematics::Metric Geometry ,High Energy Physics::Experiment ,Neutrino ,010306 general physics ,Muon detector - Abstract
An experiment for measuring the flux of cosmic gamma rays with energy above 100 TeV is currently being prepared at the Baksan Neutrino Observatory of the Institute for Nuclear Research, Russian Academy of Sciences. For this purpose, based on the Carpet-2 shower array which has been operating for many years, the Carpet-3 multipurpose shower array is being constructed. In particular, the preparation of the experiment supposes an increase in the area of the muon detector (MD) and ground part of the array. For ground modules of the Carpet-3 array, a scintillation detector with a liquid scintillator in a plastic package has been elaborated. In this work, descriptions of the Carpet-3 array and working characteristics of the new scintillation detector are presented.
- Published
- 2018
27. The Carpet-3 Experiment to Search for Diffuse Gamma Rays with Energies Higher than 100 TeV
- Author
-
E. A. Gorbacheva, D. D. Dzhappuev, V. B. Petkov, V. I. Volchenko, K. V. Ptitsyna, G. V. Volchenko, A. S. Lidvansky, A. F. Yanin, I. M. Dzaparova, A. N. Kurenya, O. I. Mikhailova, N. F. Klimenko, A. U. Kudzhaev, and M. M. Khadzhiev
- Subjects
Physics ,Nuclear and High Energy Physics ,COSMIC cancer database ,Physics::Instrumentation and Detectors ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,Astrophysics::Instrumentation and Methods for Astrophysics ,Gamma ray ,Flux ,01 natural sciences ,Nuclear physics ,Air shower ,Data acquisition ,Observatory ,0103 physical sciences ,High Energy Physics::Experiment ,Neutrino ,010306 general physics ,Muon detector - Abstract
An experiment for measuring the flux of diffuse cosmic gamma rays with energies above 100 TeV (the Carpet-3 experiment) is now being prepared at the Baksan Neutrino Observatory, Institute for Nuclear Research, Russian Academy of Sciences. The preparation of the experiment entails an increase in the area both of the muon detector and of the surface part of the air shower array. This work presents an estimate of the experiment sensitivity to showers generated by primary gamma quanta for different configurations of the array. According to experimental data of the Carpet-2 array for 9.2 years of pure data acquisition time, preliminary estimates for the upper limit of the diffuse cosmic gamma ray flux with energies above 930 PeV have been obtained.
- Published
- 2018
28. Astroparticle Physics Experiments in the Baksan Neutrino Observatory
- Author
-
V. B. Petkov
- Subjects
Astroparticle physics ,Physics ,Nuclear and High Energy Physics ,Scintillation ,Field (physics) ,Astronomy ,01 natural sciences ,Experimental research ,law.invention ,Telescope ,law ,Observatory ,0103 physical sciences ,Neutrino ,010306 general physics ,010303 astronomy & astrophysics - Abstract
The Baksan Neutrino Observatory (BNO) of the Institute for Nuclear Research of the Russian Academy of Sciences is one of the first-rate scientific centers where the experimental research in the field of astroparticle physics is performed. In this paper, a brief overview of research at the unique complex of surface and underground experimental facilities, consisting of the Baksan Underground Scintillation Telescope (BUST) and EAS arrays Carpet-2 and Andyrchy, is presented.
- Published
- 2018
29. Neutron flux measurement at the Baksan Underground Scintillation Telescope
- Author
-
Yu. F. Novoseltsev, R. V. Novoseltseva, M. M. Boliev, I. M. Dzaparova, V. B. Petkov, M. M. Kochkarov, V. I. Volchenko, G. V. Volchenko, and A. F. Yanin
- Subjects
Physics ,Nuclear and High Energy Physics ,Scintillation ,Muon ,Physics::Instrumentation and Detectors ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,Nuclear Theory ,Flux ,Scintillator ,01 natural sciences ,Neutron temperature ,law.invention ,Telescope ,Nuclear physics ,Neutron flux ,law ,0103 physical sciences ,Scintillation counter ,Nuclear Experiment ,010306 general physics - Abstract
The characteristics of fast neutrons produced by cosmic-ray muons at the Baksan Underground Scintillation Telescope (BUST) are investigated. A novel approach to the problem consists in estimating the neutron flux by the production rate of the unstable radioactive nuclide 12B in the (n, p) reaction on carbon nuclei of the BUST organic scintillator. The processing of the data collected in 2002–2015 yielded $${N_{{{12}_B}}} = 337 \pm 2.5$$ events consistent with those of the reaction 12C(n, p)12B. For the BUST internal planes, the background of fast neutrons with E > 28.6 MeV is experimentally estimated as Φ ∝ 10−11cm–2 s–1. This is lower than the theoretically predicted total neutron flux by nearly two orders of magnitude. The disagreement with predictions is attributed to the suppression of neutron flux in the external scintillator planes of the detector.
- Published
- 2018
30. Performance of tracking stations of the underground cosmic-ray detector array EMMA
- Author
-
Maciej Slupecki, Timo Enqvist, V. B. Petkov, L. B. Bezrukov, I. M. Dzaparova, L. V. Inzhechik, G. V. Volchenko, Wladyslaw Henryk Trzaska, A. F. Yanin, A. Virkajärvi, Jari Joutsenvaara, Bayarto Lubsandorzhiev, Pasi Kuusiniemi, Kai Loo, V. I. Volchenko, and H. O. U. Fynbo
- Subjects
Physics::Instrumentation and Detectors ,Astrophysics::High Energy Astrophysical Phenomena ,tutkimuslaitteet ,High-energy muons ,Cosmic ray ,Scintillator ,Tracking (particle physics) ,01 natural sciences ,Optics ,cosmic rays ,0103 physical sciences ,Angular resolution ,drift chambers ,Underground experiment ,Cosmic rays ,010303 astronomy & astrophysics ,Image resolution ,Physics ,Muon ,Drift chambers ,ta114 ,010308 nuclear & particles physics ,business.industry ,Detector ,Astronomy and Astrophysics ,high-energy muons ,ilmaisimet ,underground experiment ,Scintillation counter ,Plastic scintillation detectors ,High Energy Physics::Experiment ,business ,kosminen säteily ,Muon tracking ,muon tracking ,plastic scintillation detectors - Abstract
The new cosmic-ray experiment EMMA operates at the depth of 75 m (50 GeV cutoff energy for vertical muons; 210 m.w.e.) in the Pyhasalmi mine, Finland. The underground infrastructure consists of a network of eleven stations equipped with multi-layer, position-sensitive detectors. EMMA is designed for cosmic-ray composition studies around the energy range of the knee, i.e., for primary particles with energies between 1 and 10 PeV. In order to yield significant new results EMMA must be able to record data in the full configuration for about three years. The key to the success of the experiment is the performance of its tracking stations. In this paper we describe the layout of EMMA and construction of the two main detector types used for muon tracking: the high-resolution drift chambers and fast scintillation detector arrays. We also show the measured tracking efficiencies, position and angular resolutions, and sensitivity of drift chambers to the air pressure. The measured angular muon distributions are well reproduced by CORSIKA simulations folded with the known density distribution of the overburden. The single muon flux at the depth of 210 m.w.e. is (1.29 ± 0.06) m − 2 s − 1 . This value was determined from the reconstructed tracks registered by a six-layer array of position-sensitive drift chambers.
- Published
- 2018
31. Isotropic neutrino flux from supernova explosions in the universe
- Author
-
V. B. Petkov
- Subjects
Physics ,Nuclear and High Energy Physics ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,High Energy Physics::Phenomenology ,Isotropy ,Flux ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,01 natural sciences ,Galaxy ,Spectral line ,Redshift ,Supernova ,0103 physical sciences ,Gravitational collapse ,High Energy Physics::Experiment ,Neutrino ,010303 astronomy & astrophysics ,Astrophysics::Galaxy Astrophysics - Abstract
Neutrinos of all types are emitted from the gravitational collapse of massive star cores, and have been amassed in the Universe throughout the history of evolution of galaxies. The isotropic and stable flux of these neutrinos is a source of information on the spectra of neutrinos from individual supernovae and on their redshift distribution. The prospects for detecting the isotropic neutrino flux with the existing and upcoming experimental facilities and the current upper limits are discussed in this paper.
- Published
- 2018
32. Fast-Neutron Background at the Baksan Underground Scintillation Telescope
- Author
-
V. B. Petkov, Yu. F. Novoseltsev, M. M. Kochkarov, R. V. Novoseltseva, A. F. Yanin, M. M. Boliev, and I. M. Dzaparova
- Subjects
010302 applied physics ,Physics ,Elastic scattering ,Scintillation ,Physics::Instrumentation and Detectors ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,Detector ,General Physics and Astronomy ,01 natural sciences ,Neutron temperature ,law.invention ,Nuclear physics ,Telescope ,law ,0103 physical sciences ,Neutron ,Neutrino ,Neutron activation analysis ,Nuclear Experiment - Abstract
The search for neutrino signals from gravitational core collapses in the Milky Way is one of the main lines of research at the Baksan Underground Scintillation Telescope (BUST). Neutrons generated by cosmic-ray muons produce a considerable background in such experiments. The contribution from the elastic scattering of fast neutrons off protons to the overall single-event background rate measured in the inner detector planes is estimated via neutron activation analysis. The resulting value of the fast-neutron flux agrees with one based on the results from FLUKA modeling for the depth of the BUST detector. The same technique can be used to estimate the neutron background in similar experiments focused on rare events.
- Published
- 2019
33. Searches for sub-PeV photons in coincidence with neutrinos
- Author
-
V S Romanenko, Yu Z Afashokov, I M Dzaparova, D D Dzhappuev, T A Dzhatdoev, E A Gorbacheva, I S Karpikov, M M Khadzhiev, N F Klimenko, A U Kudzhaev, A N Kurenya, A S Lidvansky, O I Mikhailova, V B Petkov, E I Podlesnyi, G I Rubtsov, I B Unatlokov, I A Vaiman, A F Yanin, Ya V Zhezher, and K V Zhuravleva
- Subjects
History ,Astrophysics::High Energy Astrophysical Phenomena ,Physics::Optics ,Computer Science Applications ,Education - Abstract
The mechanisms of origin of ultrahigh-energy gamma radiation are poorly studied. One way to find out is to search for temporal and directional coincidences of high-energy galactic neutrinos with photons of similar energies. The results of such a search could provide indications of the hadronic origin of this radiation. In this paper, we report on the search for photons with energies above 300 TeV in coincidence with high–energy neutrinos. The searches of ultrahigh–energy gammas were carried out at the Carpet–2 EAS array, using three years of data taking.
- Published
- 2021
34. Search for neutrino counterparts of LIGO/Virgo gravitational-wave events
- Author
-
I B Unatlokov, I M Dzaparova, M G Kostyuk, M M Kochkarov, A N Kurenya, Yu F Novoseltsev, R V Novoseltseva, V B Petkov, P S Striganov, and A F Yanin
- Subjects
General Relativity and Quantum Cosmology ,History ,Astrophysics::High Energy Astrophysical Phenomena ,Astrophysics::Instrumentation and Methods for Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics::Galaxy Astrophysics ,Computer Science Applications ,Education - Abstract
The LIGO/Virgo collaborations have reported the results of their searches for gravitational-waves from the first half of their third observing run. 39 events were combined into the second Gravitational-Wave Transient Catalog (GWTC-2), reaching the total number of 50. In addition to these, two neutron star - black hole merger events were also confirmed. The search for neutrino counterparts of LIGO/Virgo gravitational-wave events was performed on the Baksan Underground Scintillation Telescope. The processing algorithm and the results of the counterpart search are described.
- Published
- 2021
35. Measurement of the 14C Content in Liquid Scintillators by Means of a Small-Volume Detector in the Low-Background Chamber of the Baksan Neutrino Observatory
- Author
-
A. V. Veresnikova, A. Virkajarvi, Yu. M. Gavrilyuk, Sultim Lubsandorzhiev, V. V. Sinev, V. V. Kuzminov, G. Ya. Novikova, P. Yu. Naumov, V. Yu. Grishina, Sh. I. Umerov, T. Enquist, E. A. Yanovich, V. B. Petkov, V. I. Gurentsov, A. Yu. Sidorenkov, Jari Joutsenvaara, Bayarto Lubsandorzhiev, V. V. Kazalov, A. M. Gangapshev, I. R. Barabanov, A. M. Pshukov, V. P. Morgalyuk, L. B. Bezrukov, A. K. Mezhokh, S. Krokhaleva, V. P. Zavarzina, A. S. Kurlovich, and Pasi Kuusiniemi
- Subjects
Physics ,Nuclear and High Energy Physics ,010308 nuclear & particles physics ,Stable isotope ratio ,Linear alkylbenzene ,Detector ,Scintillator ,01 natural sciences ,Concentration ratio ,Atomic and Molecular Physics, and Optics ,Nuclear physics ,chemistry.chemical_compound ,chemistry ,Observatory ,0103 physical sciences ,Neutrino ,010306 general physics ,Lepton - Abstract
A setup for measuring natural-radioactivity backgrounds and ultralow concentrations of the isotope 14C in samples of a liquid organic scintillator was created at the low-background laboratory of the Baksan Neutrino Observatory (Institute for Nuclear Research, Russian Academy of Sciences) at a depth of 4900 mwe. The concentration of the radiocarbon 14C in a sample of a scintillator based on domestically produced linear alkylbenzene was measured, and it was found that 14C/12C (3.3 ± 0.5) × 10−17.
- Published
- 2017
36. Observation of Photons above 300 TeV Associated with a High-energy Neutrino from the Cygnus Region
- Author
-
I.A. Vaiman, M. M. Khadzhiev, Sergey Troitsky, V. S. Romanenko, E.I. Podlesnyi, K.V. Zhuravleva, N. F. Klimenko, I.S. Karpikov, Grigory Rubtsov, A. N. Kurenya, O. I. Mikhailova, A. U. Kudzhaev, I. M. Dzaparova, A. S. Lidvansky, A. F. Yanin, V. B. Petkov, I.B. Unatlokov, D. D. Dzhappuev, Y. Zhezher, T.A. Dzhatdoev, E. A. Gorbacheva, and Yu. Z. Afashokov
- Subjects
High Energy Astrophysical Phenomena (astro-ph.HE) ,Physics ,Photon ,Physics::Instrumentation and Detectors ,Astrophysics::High Energy Astrophysical Phenomena ,High Energy Physics::Phenomenology ,FOS: Physical sciences ,Astronomy and Astrophysics ,Cosmic ray ,Astrophysics ,Radiation ,Coincidence ,IceCube Neutrino Observatory ,law.invention ,High Energy Physics - Phenomenology ,High Energy Physics - Phenomenology (hep-ph) ,Space and Planetary Science ,law ,High Energy Physics::Experiment ,Neutrino ,Astrophysics - High Energy Astrophysical Phenomena ,Event (particle physics) ,Flare - Abstract
Galactic sites of acceleration of cosmic rays to energies of order 10^15 eV and higher, dubbed PeVatrons, reveal themselves by recently discovered gamma radiation of energies above 100 TeV. However, joint gamma-ray and neutrino production, which marks unambiguously cosmic-ray interactions with ambient matter and radiation, was not observed until now. In November 2020, the IceCube neutrino observatory reported an ~150 TeV neutrino event from the direction of one of the most promising Galactic PeVatrons, the Cygnus Cocoon. Here we report on the observation of a 3.1-sigma (post trial) excess of atmospheric air showers from the same direction, observed by the Carpet-2 experiment and consistent with a few-months flare in photons above 300 TeV, in temporal coincidence with the neutrino event. The fluence of the gamma-ray flare is of the same order as that expected from the neutrino observation, assuming the standard mechanism of neutrino production. This is the first evidence for the joint production of high-energy neutrinos and gamma rays in a Galactic source., 7 pages, 3 figures, AASTeX. V2: minor changes; Appendix with more analysis details added. Version accepted by Astrophys. J. Letters. V3: title corrected (text unchanged), matches the published version
- Published
- 2021
37. Searching for neutrino bursts in the galaxy: 36 years of exposure
- Author
-
G. V. Volchenko, M. M. Boliev, I. M. Dzaparova, R. V. Novoseltseva, Yu. F. Novoseltsev, V. B. Petkov, A. F. Yanin, M. M. Kochkarov, and V. I. Volchenko
- Subjects
Physics ,Scintillation ,Physics::Instrumentation and Detectors ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,General Physics and Astronomy ,Astronomy ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,01 natural sciences ,Upper and lower bounds ,Galaxy ,law.invention ,Telescope ,Supernova ,law ,0103 physical sciences ,Gravitational collapse ,Neutrino ,010303 astronomy & astrophysics ,Event (particle physics) ,Astrophysics::Galaxy Astrophysics - Abstract
The Baksan Underground Scintillation Telescope has operated within the program of searching for neutrino bursts since the mid-1980s. We present the current status of the experiment and some results related to the investigation of background events and the stability of facility operation. Over the period from June 30, 1980, to December 31, 2016, the pure observation time was 31.27 years. No neutrino burst candidate event from the explosion of a core-collapse supernova in the Galaxy was recorded in this time. This sets an upper bound of 0.074 yr–1 on the mean frequency of gravitational stellar collapses in the Galaxy at a 90% confidence level.
- Published
- 2017
38. Multichannel Measurement System for Data Acquisition From Silicon Photomultiplier Arrays
- Author
-
A. N. Kurenya, V. B. Petkov, E. A. Gorbacheva, I. M. Dzaparova, V. I. Volchenko, and A. F. Yanin
- Subjects
Scintillation ,Materials science ,010308 nuclear & particles physics ,business.industry ,Applied Mathematics ,System of measurement ,Detector ,Photodetector ,Converters ,01 natural sciences ,Optics ,Data acquisition ,Silicon photomultiplier ,0103 physical sciences ,010306 general physics ,business ,Instrumentation - Abstract
The MMIS-32 scaled multichannel measurement system, which is based on 32-channel charge-to-digital converters and has been developed and built, is described here. This system is intended for data acquisition from arrays of silicon photomultipliers used as multichannel photosensors in scintillation detectors. The basic parameters of the measurement system are presented.
- Published
- 2017
39. Large-volume detector at the Baksan Neutrino Observatory for studies of natural neutrino fluxes for purposes of geo- and astrophysics
- Author
-
P. Yu. Naumov, V. P. Zavarzina, V. I. Gurentsov, V. Sinev, A. M. Pshukov, V. B. Petkov, I. R. Barabanov, B. K. Lubsandorzhiev, A. K. Mezhokh, Sh. I. Umerov, A. M. Gangapshev, Sultim Lubsandorzhiev, V. P. Morgalyuk, Jari Joutsenvaara, V. V. Kazalov, E. A. Yanovich, G. Ya. Novikova, V. V. Kuzminov, A. V. Veresnikova, L. B. Bezrukov, V. Yu. Grishina, T. Enquist, A. Yu. Sidorenkov, A. Virkajarvi, Yu. M. Gavrilyuk, Pasi Kuusiniemi, S. Krokhaleva, and A. S. Kurlovich
- Subjects
Physics ,Nuclear and High Energy Physics ,Physics::Instrumentation and Detectors ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,Solar neutrino ,High Energy Physics::Phenomenology ,Astrophysics ,Solar neutrino problem ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,Nuclear physics ,Neutrino detector ,0103 physical sciences ,Measurements of neutrino speed ,High Energy Physics::Experiment ,Neutrino ,Neutrino astronomy ,Neutrino oscillation ,Large Volume Detector ,010303 astronomy & astrophysics - Abstract
At the Baksan Neutrino Observatory (Institute for Nuclear Research, Russian Academy of Sciences, Moscow) deployed in the Caucasus mountains, it is proposed to create, at a depth corresponding to 4760 mwe, a large-volume neutrino detector on the basis of a liquid scintillator with a target mass of 10 kt. The detector in question is intended for recording natural fluxes of neutrinos whose energy may be as low as 100MeV. Neutrino fluxes from various sources are considered in the present study, and the expected effect in the proposed detector is estimated. The detector hat is being developed at the Baksan Neutrino Observatorywill become part of the world network of neutrino detectors for studying natural neutrino fluxes.
- Published
- 2017
40. The Carpet-3 experiment to search for diffuse gamma rays with energies of more than 100 TeV
- Author
-
E. A. Gorbacheva, K. V. Ptitsyna, D. D. Dzhappuev, A. S. Lidvansky, I. M. Dzaparova, O. I. Mikhailova, V. B. Petkov, A. U. Kudzhaev, N. F. Klimenko, A. N. Kurenya, M. M. Khadzhiev, G. V. Volchenko, A. F. Yanin, and V. I. Volchenko
- Subjects
Physics ,COSMIC cancer database ,Physics::Instrumentation and Detectors ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,Hadron ,Astrophysics::Instrumentation and Methods for Astrophysics ,Gamma ray ,General Physics and Astronomy ,Flux ,01 natural sciences ,Nuclear physics ,Air shower ,Observatory ,0103 physical sciences ,High Energy Physics::Experiment ,Neutrino ,010306 general physics ,Muon detector - Abstract
An experiment for measuring the flux of cosmic diffuse gamma rays with energies above 100 TeV (the Carpet-3 air shower array) is now being prepared at the Baksan Neutrino Observatory, Institute for Nuclear Research, Russian Academy of Sciences. The preparations entail a substantial increase of the areas of both the muon detector and the surface air shower array. The experiment’s sensitivity to showers generated by primary gamma rays is estimated for different configurations of the array. In addition, preliminary estimates of the upper limit on the flux of diffuse gamma rays with energies higher than 1.3 PeV, derived using experimental data from the old Carpet-2 array, are presented for a net exposure time of 9.2 years.
- Published
- 2017
41. CARPET-2 SEARCH FOR GAMMA RAYS ABOVE 100 TEV IN COINCIDENCE WITH HAWC AND ICECUBE ALERTS
- Author
-
Sergey Troitsky, V. S. Romanenko, E. A. Gorbacheva, D. D. Dzhappuev, A. F. Yanin, A. S. Lidvansky, Yu. Z. Afashokov, A. U. Kudzhaev, I. M. Dzaparova, N. F. Klimenko, I.S. Karpikov, O. I. Mikhailova, V. B. Petkov, A. N. Kurenya, Y. Zhezher, M. M. Khadzhiev, Grigory Rubtsov, K.V. Zhuravleva, and I. B. Unatlokov
- Subjects
High Energy Astrophysical Phenomena (astro-ph.HE) ,Physics ,Photon ,Muon ,Physics and Astronomy (miscellaneous) ,Physics::Instrumentation and Detectors ,Astrophysics::High Energy Astrophysical Phenomena ,High Energy Physics::Phenomenology ,Detector ,Astrophysics::Instrumentation and Methods for Astrophysics ,Gamma ray ,FOS: Physical sciences ,Astrophysics ,01 natural sciences ,Coincidence ,010305 fluids & plasmas ,Observatory ,0103 physical sciences ,High Energy Physics::Experiment ,Neutrino ,Astrophysics - High Energy Astrophysical Phenomena ,010306 general physics - Abstract
We report on the search of astrophysical gamma rays with energies in the 100 TeV to several PeV range arriving in directional and temporal coincidence with public alerts from HAWC (TeV gamma rays) and IceCube (neutrinos above ~100 TeV). The observations have been performed with the Carpet-2 air-shower detector at the Baksan Neutrino Observatory, working in the "photon-friendly" mode since 2018. Photon candidate showers are selected by their low muon content. No significant excess of the photon candidates have been observed, and upper limits on gamma-ray fluences associated with the alerts are obtained. For events with good viewing conditions, the Carpet-2 effective area for photons is of the order of the IceCube effective area for neutrinos of the same energy, so the constraints start to probe the production of neutrinos in fast flares of Galactic sources., 4 pages paper + 5 pages Supplemental Material. V2: references added, version accepted by JETP Letters
- Published
- 2020
42. Neutron flux measurement using activated radioactive isotopes at the Baksan underground scintillation telescope
- Author
-
M. M. Boliev, M. M. Kochkarov, V. I. Volchenko, V. B. Petkov, Yu. F. Novoseltsev, R. V. Novoseltseva, G. V. Volchenko, A. F. Yanin, I. A. Alikhanov, and I. M. Dzaparova
- Subjects
Physics ,Nuclear and High Energy Physics ,Scintillation ,Muon ,Physics::Instrumentation and Detectors ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,Neutron stimulated emission computed tomography ,Scintillator ,01 natural sciences ,Nuclear physics ,Neutron flux ,0103 physical sciences ,Neutron cross section ,Neutron detection ,Neutron ,Nuclear Experiment ,010306 general physics - Abstract
Preliminary results of a neutron background measurement at the Baksan underground scintillation telescope (BUST) are presented. The external planes of the BUST are fully covered with standard scintillation detectors shielding the internal planes and suppressing thus background events due to cosmogenic and local radioactivity. The shielded internal planes were used as target for the neutron flux registration. The experimental method is based on the delayed coincidences between signals from any of the BUST counters. It is assumed that the first signal is due to inelastic interaction of a neutron with the organic scintillator, while the second signal comes from the decay of an unstable radioactive isotope formed when the fast neutron interacts with the 12C nuclei. Using the Monte-Carlo method (GEANT4) we also simulated propagation of neutrons through a layer of scintillator. The experimentally found muon induced neutron flux is j =1.3-0.3+0.7 ×10-10cm-2s-1 for neutron energies E ≥ 22MeV, which is in a qualitative agreement with similar measurements of other underground laboratories as well as with predictions of the GEANT4.
- Published
- 2016
43. The search for neutrino bursts from supernovae with Baksan underground scintillation telescope
- Author
-
I. M. Dzaparova, Yu. F. Novoseltsev, G. V. Volchenko, A. F. Yanin, V. B. Petkov, R. V. Novoseltseva, M. M. Kochkarov, V. I. Volchenko, and M. M. Boliev
- Subjects
Physics ,Nuclear and High Energy Physics ,Scintillation ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,Astronomy ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,01 natural sciences ,Galaxy ,law.invention ,Telescope ,Supernova ,Stars ,law ,0103 physical sciences ,Gravitational collapse ,Scintillation counter ,Neutrino ,010303 astronomy & astrophysics ,Astrophysics::Galaxy Astrophysics - Abstract
The current status of the experiment on recording neutrino bursts from core collapse stars is presented. The actual observational time is 29.76 years. An upper bound of the mean frequency of core collapse supernovae in our Galaxy is f col < 0.077 year–1 (90% CL).
- Published
- 2016
44. Modeling of a MeV-scale Particle Detector Based on Organic Liquid Scintillator
- Author
-
A. N. Fazliakhmetov, V. B. Petkov, V. N. Gavrin, A. M. Gangapshev, T. V. Ibragimova, V. V. Kazalov, D. Yu Kudrin, V. V. Kuzminov, G. Ya. Novikova, B. K. Lubsandorzhiev, Nikita Ushakov, A. Yu. Sidorenkov, E. A. Yanovich, Yu. M. Malyshkin, M. M. Kochkarov, Dmitry Voronin, A. A. Shikhin, and E. P. Veretenkin
- Subjects
Physics ,Nuclear and High Energy Physics ,Physics - Instrumentation and Detectors ,010308 nuclear & particles physics ,business.industry ,Physics::Instrumentation and Detectors ,Monte Carlo method ,Detector ,FOS: Physical sciences ,Instrumentation and Detectors (physics.ins-det) ,Scintillator ,01 natural sciences ,Particle detector ,Optics ,Neutrino detector ,Observatory ,0103 physical sciences ,High Energy Physics::Experiment ,Neutrino ,010306 general physics ,business ,Neutrino oscillation ,Instrumentation - Abstract
The detectors based on the liquid scintillator (LS) monitored by an array of photo-multiplier tubes (PMT) are often used in low energy experiments such as neutrino oscillation studies and search for dark matter. Detectors of this kind operate in an energy range spanning from hundreds of keV to a few GeV providing a few percent resolution at energies above 1 MeV and allowing to observe fine spectral features. This article gives a brief overview of relevant physical processes and introduces a new universal simulation tool LSMC (Liquid Scintillator Monte Carlo) for simulation of LS-based detectors equipped with PMT arrays. This tool is based on the Geant4 framework and provides supplementing functionality for ease of configuration and comprehensive output. The usage of LSMC is illustrated by modeling and optimization of a compact detector prototype currently being built at Baksan Neutrino Observatory.
- Published
- 2019
45. Limits on the isotropic diffuse gamma-ray flux between 100 TeV and 1 PeV: experiments Carpet-2 and Carpet-3
- Author
-
V. S. Romanenko, I. M. Dzaparova, A. U. Kudzhaev, M. M. Khadzhiev, N. F. Klimenko, V. B. Petkov, E. A. Gorbacheva, D. D. Dzhappuev, A. N. Kurenya, O. I. Mikhailova, A. F. Yanin, A. S. Lidvansky, and K. V. Ptitsyna
- Subjects
Physics ,Isotropy ,Gamma ray ,Flux ,Cosmic ray ,Astrophysics - Published
- 2019
46. The multi-messenger astronomy: experiments in the Baksan Neutrino Observatory
- Author
-
V. B. Petkov
- Subjects
Physics ,Observatory ,Astronomy ,Primordial black hole ,Neutrino ,Gamma-ray burst - Published
- 2019
47. Fast neutrons in the Baksan Underground Scintillation Telescope: the background for core-collapse supernova searches
- Author
-
Yu. F. Novoseltsev, V. B. Petkov, I. M. Dzaparova, M. M. Kochkarov, M. M. Boliev, I. A. Alikhanov, R. V. Novoseltseva, and A. F. Yanin
- Subjects
Telescope ,Physics ,Scintillation ,law ,Astronomy ,Type II supernova ,Neutron temperature ,law.invention - Published
- 2019
48. Supernova Neutrino Burst Monitor at the Baksan Underground Scintillation Telescope
- Author
-
A. N. Kurenya, Yu.F. Novosel'tsev, A. F. Yanin, M. M. Boliev, P. S. Striganov, M. M. Kochkarov, R. V. Novoseltseva, V. B. Petkov, and I. M. Dzaparova
- Subjects
Physics ,Scintillation ,Physics - Instrumentation and Detectors ,010308 nuclear & particles physics ,FOS: Physical sciences ,Astronomy and Astrophysics ,Astrophysics ,Instrumentation and Detectors (physics.ins-det) ,Mean frequency ,01 natural sciences ,Galaxy ,law.invention ,Telescope ,Stellar core ,Supernova ,Neutrino detector ,Astrophysics - Solar and Stellar Astrophysics ,law ,0103 physical sciences ,Neutrino ,Astrophysics - Instrumentation and Methods for Astrophysics ,010303 astronomy & astrophysics ,Instrumentation and Methods for Astrophysics (astro-ph.IM) ,Solar and Stellar Astrophysics (astro-ph.SR) - Abstract
The experiment on recording neutrino bursts operates since the mid-1980. As the target, we use two parts of the facility with the total mass of 240 tons. The current status of the experiment and some results related to the investigation of background events and the stability of facility operation are presented. Over the period of June 30, 1980 to December 31, 2018, the actual observational time is 33.02 years. No candidate for the stellar core collapse has been detected during the observation period. An upper bound of the mean frequency of core collapse supernovae in our Galaxy is 0.070 year$^{-1}$ (90\% CL)., Comment: Submitted to Astropart.Phys
- Published
- 2019
- Full Text
- View/download PDF
49. A search for neutrino bursts in the Galaxy with the Baksan Underground Scintillation Telescope; 38 years of exposure
- Author
-
Yu. F. Novoseltsev, M. M. Boliev, I. M. Dzaparova, A. N. Kurenya, M. M. Kochkarov, P. S. Striganov, A. F. Yanin, V. B. Petkov, and R. V. Novoseltseva
- Subjects
Telescope ,Physics ,Scintillation ,law ,Astronomy ,Neutrino ,Galaxy ,law.invention - Published
- 2019
50. Quick search for optical partners of bursts of very high energy gamma-ray radiation
- Author
-
S. A. Naroenkov, V. B. Petkov, A. V. Sergeev, E. A. Gorbacheva, D. D. Dzhappuev, M. A. Nalivkin, I. M. Dzaparova, O. I. Mikhailova, I. S. Savanov, A. N. Kurenya, V. B. Puzin, and A. A. Shlyapnikov
- Subjects
Physics ,High energy ,Optics ,business.industry ,Gamma ray ,Radiation ,business - Published
- 2019
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.