Search

Your search keyword '"Yu. T. Yurkin"' showing total 67 results
Start Over Author "Yu. T. Yurkin" Topic law
67 results on '"Yu. T. Yurkin"'

1. The Anticoincidence System of Space-Based Gamma-Ray Telescope GAMMA-400, Test Beam Studies of Anticoincidence Detector Prototype with SiPM Readout

Author

Alexey Leonov, A. M. Galper, Yu. V. Gusakov, A. V. Bakaldin, Yu. T. Yurkin, A. E. Egorov, O. D. Dalkarov, N. P. Topchiev, Irina V. Chernysheva, Yu. I. Stozhkov, M. F. Runtso, S. I. Suchkov, A. I. Arkhangelskiy, N. Yu. Pappe, I. V. Arkhangelskaja, and M. D. Kheymits

Subjects
Physics, Nuclear and High Energy Physics, Calorimeter (particle physics), Physics::Instrumentation and Detectors, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Scintillator, Atomic and Molecular Physics, and Optics, Synchrotron, law.invention, Telescope, Optics, Silicon photomultiplier, law, Sensitivity (control systems), business, Fermi Gamma-ray Space Telescope
Abstract

The GAMMA-400 gamma-ray telescope is planned for the launch at the end of 2026 on the Navigator service platform designed by Lavochkin Association on an elliptical orbit with following initial parameters: an apogee $${\sim}$$ 300 000, a perigee $${\sim}$$ 500 km, a rotation period $${\sim}$$ 7 days and inclination of 51.4 $${}^{\circ}$$ . The apparatus is expected to operate for more than 5 years, reaching an unprecedented sensitivity for the search of dark matter signatures and the study of the unresolved and so far unidentified gamma-ray sources. The segmented anticoincidence counters surround the converter-tracker and calorimeter of the telescope with the purpose of vetoing to assure a clean track reconstruction and charged particle background suppression. The anticoincidence detector prototype based on long BC-408 scintillator with silicon photomultipliers readout was tested using 300-MeV positron beam of synchrotron C-25P ‘‘PAKHRA’’ of Lebedev Physical Institute. The measurement setup, design concepts for the prototype detector together with test results are discussed.

Published
2020

2. Gammas and Charged Particles Identification in Lateral and Additional Apertures of GAMMA-400

Author

Yu. T. Yurkin, I. V. Arkhangelskaja, Yu. I. Stozhkov, O. D. Dalkarov, M. F. Runtso, A. I. Arkhangelskiy, Alexey Leonov, Yu. V. Gusakov, M. D. Kheymits, S. I. Suchkov, A. E. Egorov, A. M. Galper, E. N. Chasovikov, A. V. Bakaldin, Irina V. Chernysheva, N. P. Topchiev, and N. Yu. Pappe

Subjects
Physics, Nuclear and High Energy Physics, Scintillation, Calorimeter (particle physics), Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Aperture, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, 01 natural sciences, Atomic and Molecular Physics, and Optics, Charged particle, Synchrotron, law.invention, Telescope, Optics, law, 0103 physical sciences, Angular resolution, Lateral aperture, 010306 general physics, business
Abstract

The GAMMA-400 (Gamma Astronomical Multifunctional Modular Apparatus) will be a new generation satellite gamma-observatory. The gamma-ray telescope GAMMA-400 consists of the anticoincidence system (top and lateral sections—ACtop and AClat), the converter-tracker (C), the time-of-flight system TOF (two sections S1 and S2), the position-sensitive and electromagnetic calorimeters (CC1 and CC2), the scintillation detectors of the calorimeter (S3 and S4) and lateral anticoincidence detectors of the calorimeter LD. Two apertures used for observation of transient events do not require the best angular resolution as for the gamma-ray bursts and solar flares from both upper and lateral directions. Additional aperture allows the particle registering from upper direction, which do not interact with converter-tracker and do not form a TOF signal. The lateral aperture allows registering of γ-quanta in perpendicular direction with respect to main axis of GAMMA-400 due to CC2, LD, S3, and S4. The thickness of CC2 in this direction is ∼44 X0 and this allows detection of gammas, electrons and positrons with energies up to 10 TeV. The results of calculation of the fractal dimension of temporal profiles of additional aperture prototype of GAMMA-400 during its calibration using secondary positron beam of the synchrotron C-25P “PAKHRA” of Lebedev Physical Institute confirm the absence of any correlation between the AC and CC1 characteristics and correspondence of additional aperture background to Poisson statistics or Erlang one with shape parameter up to 10.

Published
2019

3. A System for Generating the Trigger Signals of the Spaceborne GAMMA-400 Telescope

Author

S. I. Suchkov, I. V. Arkhangelskaja, N. P. Topchiev, E. N. Chasovikov, A. V. Bakaldin, A. I. Arkhangelskiy, V. G. Zverev, N. Yu. Pappe, Yu. I. Stozhkov, Irina V. Chernysheva, A. E. Egorov, Alexey Leonov, A. M. Galper, M. F. Runtso, Yu. V. Gusakov, O. D. Dalkarov, M. D. Kheymits, and Yu. T. Yurkin

Subjects
010302 applied physics, Physics, COSMIC cancer database, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Gamma ray, General Physics and Astronomy, Astronomy, Electron, 01 natural sciences, Signal, Synchrotron, law.invention, Telescope, Positron, law, 0103 physical sciences
Abstract

The GAMMA-400 space project is one of the new generation of space observatories designed to search for signs of dark matter in the cosmic gamma emission, and to measure the characteristics of diffuse gamma-ray emission and gamma-rays from the Sun during periods of solar activity; gamma-ray bursts; extended and point gamma-ray sources; and electron, positron, and cosmic-ray nuclei fluxes with energies in the TeV ranges. The GAMMA-400 γ-ray telescope constitutes the core of the scientific instrumentation. The nature of the intended experiments imposes stringent requirements on the gamma telescope’s system of trigger signal formation, now being developed using the state-of-the-art logic devices and fast data links. The design concept of the system is discussed, along with the chosen engineering solutions and some experimental results obtained during the operation of the system prototype using a positron beam with energies of 100–300 MeV from the PAKHRA S-25R synchrotron at the Lebedev Physical Institute.

Published
2019

4. GAMMA-400 Project

Author

Yu. T. Yurkin, N. P. Topchiev, and A. M. Galper

Subjects
Physics, 010504 meteorology & atmospheric sciences, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Galactic Center, Astronomy, Astronomy and Astrophysics, Cosmic ray, Galactic plane, 01 natural sciences, Galaxy, law.invention, Telescope, Positron, Space and Planetary Science, law, 0103 physical sciences, 010303 astronomy & astrophysics, 0105 earth and related environmental sciences, Fermi Gamma-ray Space Telescope
Abstract

Extraterrestrial gamma-ray astronomy is now a source of a new knowledge in the fields of astrophysics, cosmic-ray physics, and the nature of dark matter. The next absolutely necessary step in the development of extraterrestrial high-energy gamma-ray astronomy is the improvement of the physical and technical characteristics of gamma-ray telescopes, especially their angular and energy resolutions. Such a new generation telescope will be GAMMA-400, currently under development. Together with an X-ray telescope, it will perform precise and detailed observations in the energy range of ~20 MeV to ~10 000 GeV and 3–30 keV the Galactic plane, especially, toward the Galactic Center, Fermi Bubbles, Crab, Cygnus, etc. The GAMMA-400 will operate in the highly elliptic orbit continuously for a long time with the unprecedented angular (~0.01◦ at Eγ = 100 GeV) and energy (~1% at Eγ = 100 GeV) resolutions, exceeding the Fermi-LAT as well as ground-based gamma-ray telescopes by a factor of 5–10. GAMMA-400 will permit resolving gamma rays from annihilation or decay of dark matter particles, identifyingmany discrete sources (many of which are variable), clarifying the structure of extended sources, specifying the data on the diffuse emission, as well as measuring electron + positron fluxes and specifying electron + positron spectrum in the energy range from 1 GeV to 10 000 GeV.

Published
2018

5. The Future Space-Based GAMMA-400 Gamma-Ray Telescope for Studying Gamma and Cosmic Rays

Author

Irina V. Chernysheva, A. V. Bakaldin, A. M. Galper, Yu. T. Yurkin, Yu. I. Stozhkov, O. D. Dalkarov, N. P. Topchiev, Alexey Leonov, M. D. Kheimitz, M. F. Runtso, V. G. Zverev, I. V. Arkhangelskaja, Yu. V. Gusakov, P. Yu. Naumov, N. Yu. Pappe, A. I. Arkhangelskiy, S. I. Suchkov, and A. E. Egorov

Subjects
010302 applied physics, Physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Highly elliptical orbit, General Physics and Astronomy, Astronomy, Cosmic ray, Celestial sphere, Electron, 01 natural sciences, law.invention, Telescope, Positron, Observatory, law, 0103 physical sciences, Fermi Gamma-ray Space Telescope
Abstract

The future space-based γ-ray telescope GAMMA-400 will be installed on the Navigator platform of the Russian astrophysical observatory. A highly elliptical orbit will allow prolonged (~100 days) continuous observations of many regions of the celestial sphere for 7–10 years. GAMMA-400 will measure fluxes of γ‑ray emission in the energy range of ~20 MeV to several TeV and electrons + positrons to ~20 TeV. The γ-ray telescope will have excellent separation of γ-ray emissions against the background of cosmic rays and electrons + positrons from protons, along with unprecedented angular (~0.01° at Eγ = 100 GeV) and energy (~1% at Eγ = 100 GeV) resolutions 5–10 times better than for the Fermi-LAT and ground-based γ-ray telescopes. GAMMA-400 observations will provide fundamentally new data on discrete sources and spectra of γ-ray emissions and electrons + positrons.

Published
2019

6. Precision Measurements of High-Energy Cosmic Gamma-Ray Emission with the GAMMA-400 Gamma-Ray Telescope

Author

Alexey Leonov, Yu. T. Yurkin, O. D. Dalkarov, N. P. Topchiev, P. Yu. Naumov, Yu. V. Gusakov, S. I. Suchkov, I. V. Arkhangelskaja, A.I. Arkhangelskiy, A. M. Galper, M. D. Kheymits, V. G. Zverev, A. E. Egorov, A. V. Bakaldin, V. V. Kadilin, and M. F. Runtso

Subjects
Physics, Nuclear and High Energy Physics, Annihilation, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Gamma ray, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, Electromagnetic radiation, Atomic and Molecular Physics, and Optics, law.invention, Telescope, Positron, law, Antimatter, 0103 physical sciences, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Fermi Gamma-ray Space Telescope
Abstract

The GAMMA-400 γ-ray telescope installed at the Russian space observatory is intended for precision measurements in the energy range of 20 MeV–1000 GeV of γ-ray emission (with the angular and energy resolutions several times better than that of current γ-ray telescopes) from discrete sources; measurement of the energy spectra of Galactic and extragalactic diffuse γ-ray emission; studies of γ-ray emission from the active Sun; and measurements of fluxes of γ-ray emission and electron–positron cosmicray component, which are probably associated with the annihilation or decay of dark-matter particles.

Published
2017

7. Spectra of solar neutrons with energies of ~10–1000 MeV in the PAMELA experiment in the flare events of 2006–2015

Author

Alfonso Monaco, C. De Santis, R. Sparvoli, Roberto Bellotti, A. M. Galper, M. Merge, Yu. T. Yurkin, G. A. Bazilevskaya, A. N. Kvashnin, S. Bottai, V. Di Felice, Per Carlson, M. Bongi, F. Cafagna, G. Castellini, Sergey Koldashov, Alexey Leonov, Matteo Martucci, V. Bonvicini, V. V. Malakhov, Andrea Vacchi, E. A. Bogomolov, N. Zampa, D. Campana, L. Marcelli, M. Simon, Yuri Stozhkov, Mark Pearce, S. B. Ricciarini, O. Adriani, A. Bruno, Marco Casolino, Sergey Koldobskiy, A. V. Karelin, Marco Ricci, W. Menn, M. F. Runtso, G. C. Barbarino, Riccardo Munini, S. A. Voronov, P. Spillantini, P. Papini, Nicola Mori, A. G. Mayorov, E. Vannuccini, S. Y. Krutkov, G. Zampa, Beatrice Panico, G. Osteria, P. Picozza, G. I. Vasilyev, E. Mocchiutti, V. V. Mikhailov, Mirko Boezio, A. A. Kvashnin, Bogomolov, E. A., Adriani, O., Bazilevskaya, G. A., Barbarino, G. C., Bellotti, R., Boezio, M., Bonvicini, V., Bongi, M., Bottai, S., Bruno, A., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Galper, A. M., De Santis, C., Di Felice, V., Zampa, G., Zampa, N., Casolino, M., Campana, D., Karelin, A. V., Carlson, P., Castellini, G., Cafagna, F., Kvashnin, A. A., Kvashnin, A. N., Koldashov, S. V., Koldobskiy, S. A., Krutkov, S. Y., Leonov, A. A., Mayorov, A. G., Malakhov, V. V., Martucci, M., Marcelli, L., Menn, W., Merge, M., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Panico, B., Papini, P., Picozza, P., Pearce, M., Ricci, M., Ricciarini, S. B., Runtso, M. F., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., and Yurkin, Y. T.

Subjects
Physics Solar flare, Solar neutrons, Space experiments: Neutrons, 010504 meteorology & atmospheric sciences, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Hadron, General Physics and Astronomy, Flux, Astrophysics, 01 natural sciences, Spectral line, law.invention, Nuclear physics, Physics and Astronomy (all), Space experiment, law, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, Neutron detection, Neutron, Nuclear Experiment, 010303 astronomy & astrophysics, 0105 earth and related environmental sciences, Settore FIS/01, Physics, Solar flare, Physics::Space Physics, Flare
Abstract

The first results from measuring the spectra of solar neutrons with energies of ~10-1000 MeV in the solar flares of 2006-2015 observed by the PAMELA international space experiment are presented. The PAMELA neutron detector with 3He counters and a moderator with an area of 0.18 m2 allows us to estimate the flux of solar neutrons during solar flares. Solar neutrons with energies of ~10-1000 MeV likely occurred in 21 out of the 24 analyzed flares of 2006-2015. © 2017, Allerton Press, Inc.

Published
2017

8. High-energy gamma- and cosmic-ray observations with future space-based GAMMA-400 gamma-ray telescope

Author

Yu. T. Yurkin, A. E. Egorov, S. I. Suchkov, M. F. Runtso, A.V. Bakaldin, V.G. Zverev, N.Yu. Pappe, I. V. Arkhangelskaja, Nikolay Topchiev, A. M. Galper, M. D. Kheymits, A. A. Leonov, Y. u. V. Gusakov, Yu. I. Stozhkov, O.D. Dalkarov, Irina V. Chernysheva, A.I. Arkhangelskiy, and P. Yu. Naumov

Subjects
Physics, Astrophysics::High Energy Astrophysical Phenomena, QC1-999, Dark matter, Gamma ray, Cosmic ray, Celestial sphere, Astrophysics, law.invention, Telescope, Positron, law, Observatory, Physics::Accelerator Physics, Fermi Gamma-ray Space Telescope
Abstract

The future space-based GAMMA-400 gamma-ray telescope will be installed on the Navigator platform of the Russian Astrophysical Observatory. A highly elliptical orbit will provide observations for 7-10 years of many regions of the celestial sphere continuously for a long time (~ 100 days). GAMMA-400 will measure gamma-ray fluxes in the energy range from ~ 20 MeV to several TeV and electron + positron fluxes up to ~ 20 TeV. GAMMA-400 will have an excellent separation of gamma rays from the background of cosmic rays and electrons + positrons from protons and an unprecedented angular (~ 0.01° at Eγ = 100 GeV) and energy (~ 1% at Eγ = 100 GeV) resolutions better than for Fermi-LAT, as well as ground-based facilities, by a factor of 5-10. Observations of GAMMA-400 will provide new fundamental data on discrete sources and spectra of gamma-ray emission and electrons + positrons, as well as the nature of dark matter.

Published
2019

9. Multiple Coulomb scattering method to reconstruct low-energy gamma–ray direction in the GAMMA-400 space-based gamma–ray telescope

Author

M. D. Kheymits, R. Sparvoli, Yu. T. Yurkin, S. I. Suchkov, V. V. Mikhailov, P. Picozza, Alexey Leonov, V. G. Zverev, A. E. Egorov, E.A. Dzhivelikyan, N. P. Topchiev, O. D. Dalkarov, A. M. Galper, and A. V. Bakaldin

Subjects
Physics, Atmospheric Science, Range (particle radiation), Elliptic orbit, 010504 meteorology & atmospheric sciences, Astrophysics::High Energy Astrophysical Phenomena, Settore FIS/04, Gamma ray, Aerospace Engineering, Astronomy and Astrophysics, Curvature, 01 natural sciences, Projection (linear algebra), Computational physics, law.invention, Telescope, Geophysics, Space and Planetary Science, law, 0103 physical sciences, General Earth and Planetary Sciences, Angular resolution, 010303 astronomy & astrophysics, 0105 earth and related environmental sciences, Fermi Gamma-ray Space Telescope
Abstract

The GAMMA-400 currently developing space-based gamma-ray telescope is designed to measure the gamma-ray fluxes in the energy range from ∼20 MeV to several TeV in the highly elliptic orbit (without shadowing the telescope by the Earth) continuously for a long time. The physical characteristics of the GAMMA-400 gamma-ray telescope, especially the angular and energy resolutions (at 100-GeV gamma rays they are ∼0.01° and ∼1%, respectively), allow us to consider this space-based experiment as the next step in the development of extraterrestrial high-energy gamma-ray astronomy. In this paper, a method to improve the reconstruction accuracy of incident angle for low-energy gamma rays in the GAMMA-400 space-based gamma-ray telescope is presented. The special analysis of topology of pair-conversion events in thin layers of converter was performed. Applying the energy dependence of multiple Coulomb scattering for pair components, it is possible to estimate the energies for each particle, and to use these energies as weight in the angle reconstruction procedure. To identify the unique track in each projection the imaginary curvature method is applied. It allows us to obtain significantly better angular resolution in comparison with other methods applied in current space-based experiments. When using this method for 50-MeV gamma rays the GAMMA-400 gamma-ray telescope angular resolution is about 4°.

Published
2019

10. Capabilities of the GAMMA-400 gamma-ray telescope for lateral aperture

Author

Yu. T. Yurkin, V. V. Mikhailov, S. I. Suchkov, P. Yu. Minaev, A. M. Galper, A. Leonov, Irina V. Chernysheva, A. G. Mayorov, M. D. Kheymits, A. V. Mikhailova, A. V. Bakaldin, and Nikolay Topchiev

Subjects
Physics, History, Scintillation, Range (particle radiation), Calorimeter (particle physics), Physics::Instrumentation and Detectors, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Antenna aperture, Detector, Computer Science Applications, Education, law.invention, Telescope, Optics, law, Lateral aperture, business, Fermi Gamma-ray Space Telescope
Abstract

The future GAMMA-400 γ-ray telescope will provide fundamentally new data on discrete sources and spectra of γ-ray emissions and electrons + positrons due to its unique angular and energy resolutions in the wide energy range from 20 MeV up to several TeV. The γ-ray telescope consists of the anticoincidence system (AC), the converter-tracker (C), the time-of-flight system (S1 and S2), the position-sensitive and electromagnetic calorimeters (CC1 and CC2), the scintillation detectors of the calorimeter (S3 and S4) and lateral anticoincidence detectors of the calorimeter (LD). To extend the GAMMA-400 capabilities to measure γ-ray bursts, Monte-Carlo simulations were performed for lateral aperture of the one of the versions of GAMMA-400. Second-level trigger based on signals from CC2, LD, S3, and S4 allows us to detect γ-ray bursts in the energy range of ~10-300 MeV with high effective area about 1 m2.

Published
2020

11. A technique for selecting γ rays with energies above 50 GeV from the background of charged particles in the GAMMA-400 space-based γ-ray telescope

Author

Yu. V. Gusakov, M. D. Kheymits, V. G. Zverev, V. V. Kadilin, S. I. Suchkov, N. P. Topchiev, I. V. Arkhangelskaja, Yu. T. Yurkin, P. Yu. Naumov, Vladimir Kaplin, A. M. Galper, A.I. Arkhangelskiy, M. F. Runtso, and Alexey Leonov

Subjects
Physics, Calorimeter (particle physics), 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Cosmic ray, Space (mathematics), 01 natural sciences, Charged particle, law.invention, Nuclear physics, Telescope, law, 0103 physical sciences, 010303 astronomy & astrophysics, Instrumentation
Abstract

The task of selecting neutral γ rays from the background of charged particle fluxes, which arises in investigation of high-energy (>50 GeV) cosmic rays, is complicated by the presence of the backsplash effect. The backsplash is composed of a great number of low-energy (~1 MeV) particles produced in an electromagnetic shower being developed in the calorimeter of the γ-ray telescope. A technique of charged particle rejection using an anticoincidence system has been developed. A method for discriminating events of charged particle detection from γ-ray detection events accompanied by the backsplash phenomenon is proposed. This method is based on the difference of the signals in time and makes it possible to maintain a high detection efficiency even for high-energy γ rays.

Published
2016

12. Secondary positrons and electrons in near-Earth space in the PAMELA experiment

Author

A. G. Mayorov, Alfonso Monaco, S. Y. Krutkov, D. Campana, Alexey Leonov, Matteo Martucci, M. Merge, Marco Casolino, Sergey Koldobskiy, Yu. T. Yurkin, G. C. Barbarino, M. Bongi, N. Zampa, V. Bonvicini, P. Picozza, G. Zampa, Beatrice Panico, L. Marcelli, Andrea Vacchi, E. Mocchiutti, V. Di Felice, A. Bruno, A. A. Kvashnin, M. F. Runtso, S. A. Voronov, Sergey Koldashov, M. Simon, Mirko Boezio, Riccardo Munini, A. V. Karelin, Yuri Stozhkov, V. V. Malakhov, O. Adriani, W. Menn, G. A. Bazilevskaya, G. Osteria, P. Spillantini, S. Bottai, G. Castellini, Roberto Bellotti, A. M. Galper, E. A. Bogomolov, Marco Ricci, A. N. Kvashnin, Mark Pearce, S. B. Ricciarini, P. Papini, E. Vannuccini, G. I. Vasilyev, Nicola Mori, C. De Santis, V. V. Mikhailov, R. Sparvoli, Per Carlson, F. Cafagna, Mikhailov, V. V., Adriani, O., Bazilevskaya, G. A., Barbarino, G. C., Bellotti, R., Bogomolov, E. A., Boezio, M., Bonvicini, V., Bongi, M., Bottai, S., Bruno, A., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Galper, A. M., De Santis, C., Di Felice, V., Zampa, G., Zampa, N., Casolino, M., Campana, D., Karelin, A. V., Carlson, P., Castellini, G., Cafagna, F., Kvashnin, A. A., Kvashnin, A. N., Koldashov, S. V., Koldobskiy, S. A., Krutkov, S. Y., Leonov, A. A., Mayorov, A. G., Malakhov, V. V., Martucci, M., Marcelli, L., Menn, W., Merge, M., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Panico, B., Papini, P., Picozza, P., Pearce, M., Ricci, M., Ricciarini, S. B., Runtso, M. F., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., and Yurkin, Y. T.

Subjects
Settore FIS/01, Physics, PAMELA detector, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, Magnetosphere, Cosmic ray, Astrophysics, Electron, 01 natural sciences, law.invention, Atmosphere, Physics and Astronomy (all), symbols.namesake, Atmosphere of Earth, Positron, law, Van Allen radiation belt, Physics::Space Physics, 0103 physical sciences, symbols, Cosmology, Earth (planet), Earth atmosphere, Orbits, Positrons, Radiation belts Different mechanisms, Electron flux, Magnetic spectrometers, Near-earth spaces, Secondary particles, Trapped particle, Astrophysics::Earth and Planetary Astrophysics, 010306 general physics
Abstract

Fluxes of electrons and positrons with energies above ~100 MeV in the near-Earth space are measured with the PAMELA magnetic spectrometer aboard the Resurs DK-1 satellite launched on June 15, 2006, into a quasipolar orbit with an altitude of 350–600 km and an inclination of 70°. Calculating the trajectories of detected electrons and positrons in the magnetosphere of the Earth allows us to determine their origin and isolate particles produced during interaction between cosmic rays and the residual atmosphere. Spatial distributions of albedo, quasitrapped, and trapped (in the radiation belt) positrons and electrons are presented. The ratio of positron and electron fluxes suggests that the fluxes of trapped particles of the radiation belt and quasitrapped secondary particles have different mechanisms of formation.

Published
2017

13. Measuring the albedo deuteron flux in the PAMELA satellite experiment

Author

Alfonso Monaco, G. Osteria, M. Merge, Nicola Mori, D. Campana, S. A. Voronov, Matteo Martucci, Per Carlson, Roberta Sparvoli, N. Zampa, Yu. T. Yurkin, Marco Casolino, Laura Rossetto, S. Y. Krutkov, G. I. Vasilyev, E. A. Bogomolov, A. G. Mayorov, F. Palma, R. Carbone, C. Pizzolotto, Valerio Formato, M. Simon, Riccardo Munini, L. Marcelli, Sergey Koldobskiy, W. Menn, C. De Santis, G. C. Barbarino, A. Vacchi, Marco Ricci, Mark Pearce, S. B. Ricciarini, V. V. Malakhov, C. De Donato, A. Bruno, A.A. Kvashnin, V. Di Felice, P. Papini, G. Zampa, Beatrice Panico, Yuri Stozhkov, Valentina Scotti, E. Vannuccini, P. Picozza, P. Spillantini, Alexey Leonov, N. De Simone, V. G. Zverev, Mirko Boezio, V. Bonvicini, O. Adriani, Sergey Koldashov, E. Mocchiutti, V. V. Mikhailov, Ritabrata Sarkar, S. Bottai, G. A. Bazilevskaya, G. Castellini, M. Bongi, F. Cafagna, I. A. Danilchenko, A. V. Karelin, Roberto Bellotti, A. M. Galper, A. N. Kvashnin, S., Koldobskiya, O., Adriani, G. C., Barbarino, G. A., Bazilevskaya, R., Bellotti, M., Boezio, E. A., Bogomolov, M., Bongi, V., Bonvicini, S., Bottai, A., Bruno, F., Cafagna, D., Campana, R., Carbone, P., Carlson, M., Casolino, G., Castellini, I. A., Danilchenko, C., De Donato, C., De Santi, N., De Simone, V., Di Felice, V., Formato, A. M., Galper, A. V., Karelin, S. V., Koldashov, S. Y., Krutkov, A. A., Kvashnin, A. N., Kvashnin, A., Leonov, V. V., Malakhov, L., Marcelli, M., Martucci, A. G., Mayorov, W., Menn, M., Merge, V. V., Mikhailov, E., Mocchiutti, A., Monaco, N., Mori, Munini, Riccardo, G., Osteria, F., Palma, B., Panico, P., Papini, M., Pearce, P., Picozza, C., Pizzolotto, M., Ricci, S. B., Ricciarini, L., Rossetto, R., Sarkar, V., Scotti, M., Simon, R., Sparvoli, P., Spillantini, Stozhkov, Y. u. I., A., Vacchi, E., Vannuccini, G. I., Vasilyev, S. A., Voronov, Yurkin, Y. u. T., G., Zampa, N., Zampa, V. G., Zverev, Koldobskiy, S., Adriani, O., Barbarino, Giancarlo, Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Danilchenko, I. A., De Donato, C., De Santis, C., De Simone, N., Di Felice, V., Formato, V., Galper, A. M., Karelin, A. V., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. A., Kvashnin, A. N., Leonov, A., Malakhov, V. V., Marcelli, L., Martucci, M., Mayorov, A. G., Menn, W., Merge, M., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Palma, F., Panico, B., Papini, P., Pearce, M., Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, L., Sarkar, R., Scotti, V., Simon, M., Sparvoli, R., Spillantini, P., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Zampa, G., Zampa, N., and Zverev, V. G.

Subjects
deuteron, Nuclear Theory, General Physics and Astronomy, Geomagnetism, Solar radiation Artificial Earth satellites, Energy interval, High-precision, Instrument setup, Cosmic ray, Spectral line, Latitude, law.invention, Physics and Astronomy (all), cosmic rays, PAMELA, law, Nuclear Experiment, Physics::Atmospheric and Oceanic Physics, Settore FIS/01, Physics, PAMELA detector, Astronomy, Albedo, Earth's magnetic field, Physics::Space Physics, PAMELA, cosmic rays, albedo particles, deuteron, Satellite, Astrophysics::Earth and Planetary Astrophysics, Nucleon, albedo particles
Abstract

The results of measuring albedo deuteron fluxes in the vicinity of the Earth are presented. The data were obtained in the PAMELA experiment conducted aboard the Resurs DK-1 artificial Earth satellite. High-precision detectors of the instrument setup allow us to identify albedo deuterons and measure their spectra in the energy interval from 70 to 600 MeV/nucleon at altitudes of 350-600 km for different geomagnetic latitudes.

Published
2015

14. Physical Performance of GAMMA-400 Telescope. Angular Resolution, Proton and Electron Separation

Author

Alexey Leonov, V. V. Mikhailov, M. F. Runtso, A.I. Arkhangelskiy, M. D. Kheymits, А.М. Galper, N. P. Topchiev, P. Y. u. Naumov, V. V. Kadilin, I. V. Arkhangelskaja, Yu. V. Gusakov, Yu. T. Yurkin, S. I. Suchkov, and V. G. Zverev

Subjects
Physics, Proton, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Gamma ray, X-ray telescope, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Physics and Astronomy(all), gamma-ray telescope, law.invention, gamma rays, Telescope, cosmic rays, law, hadron and electromagnetic showers, Angular resolution, space experiments, Fermi Gamma-ray Space Telescope
Abstract

The specially designed GAMMA-400 gamma-ray telescope will realize the measurements of gamma-ray fluxes and cosmic-ray electrons and positrons in the energy range from 100 MeV to several TeV. Such measurements concern with the following broad range of scientific topics. Search for signatures of dark matter, investigation of gamma-ray point and extended sources, studies of the energy spectra of Galactic and extragalactic diffuse emission, studies of gamma-ray bursts and gamma-ray emission from the active Sun, as well as high-precision measurements of spectra of high-energy electrons and positrons, protons, and nuclei up to the knee. To clarify these scientific problems with the new experimental data the GAMMA-400 gamma-ray telescope possesses unique physical characteristics comparing with previous and present experiments. For gamma-ray energies more than 100 GeV GAMMA-400 provides the energy resolution ∼1% and angular resolution better than 0.02 deg. The methods, developed to reconstruct the direction of incident gamma photon, are presented in this paper, as well as, the capability of the GAMMA-400 gamma-ray telescope to distinguish electrons and positrons from protons in cosmic rays is discussed.

Published
2015

15. GAMMA-400 Space Gamma-telescope Mathematical Model with Engineering Elements Included

Author

Yu. T. Yurkin, M. D. Kheymits, A.A. Perfil‘ev, E. N. Chasovikov, A.I. Arkhangelskiy, I. V. Arkhangelskaja, Yu. V. Gusakov, N. P. Topchiev, and A. M. Galper

Subjects
Physics, Scintillation, Engineering drawing, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Detector, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Geant4, Physics and Astronomy(all), gamma-ray telescope, law.invention, Telescope, gamma rays, Theoretical physics, Software, Development (topology), cosmic rays, Technical drawing, law, hadron and electromagnetic showers, business, space experiments, Energy (signal processing), mathematical model, Fermi Gamma-ray Space Telescope
Abstract

Mathematical model creation is a necessary stage in scientific apparatus development. The mathematical model of gamma-ray telescope GAMMA-400 is used to emulate transport of various elementary particles through the apparatus. The new iteration of the model is based on precise technical drawings and includes all the elements of the real gamma-telescope. It is created in Geant4 environment. This model allows calculation of energy deposition not only in detectors, but in any part of the apparatus, including construction elements. Moreover, it supports creation of virtual sensitive volumes, allowing determination of the number and properties of particles passing through an arbitrary part of the construction. Software for automated creation of Geant4 model based on technical drawings in STEP 3D Model format was developed. This software is capable of making models of other apparatus based particularly on scintillation and strip detectors.

Published
2015
Full Text
View/download PDF

16. Deuteron spectrum measurements under radiation belt with PAMELA instrument

Author

V. G. Zverev, Yu. T. Yurkin, V. Bonvicini, Y. I. Stozhkov, R. Carbone, Sergey Koldobskiy, V. Di Felice, G. C. Barbarino, O. Adriani, W. Menn, N. Zampa, G. A. Bazilevskaya, Matteo Martucci, S. A. Voronov, M. Simon, Riccardo Munini, L. Marcelli, P. Papini, Piero Spillantini, E. A. Bogomolov, A. Vacchi, A. Bruno, Laura Rossetto, Alfonso Monaco, V. V. Malakhov, A. G. Mayorov, M. Merge, Per Carlson, G. Castellini, A. A. Kvashnin, S. Y. Krutkov, N. De Simone, Mark Pearce, S. B. Ricciarini, Sergey Koldashov, R. Sparvoli, E. Mocchiutti, Alexey Leonov, P. Picozza, Marco Ricci, S. Bottai, F. Cafagna, C. Pizzolotto, I. A. Danilchenko, Ritabrata Sarkar, D. Campana, V. V. Mikhailov, E. Vannuccini, G. I. Vasilyev, G. Zampa, Beatrice Panico, Marco Casolino, Valerio Formato, G. Osteria, Nicola Mori, C. De Santis, C. De Donato, Valentina Scotti, F. Palma, Mirko Boezio, A. V. Karelin, Roberto Bellotti, A. M. Galper, A. N. Kvashnin, Massimo Bongi, Koldobskiy, S. A., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Danilchenko, I. A., De Donato, C., De Santis, C., De Simone, N., Di Felice, V., Formato, V., Galper, A. M., Karelin, A. V., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. A., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Martucci, M., Mayorov, A. G., Menn, W., Mergè, M., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Palma, F., Panico, B., Papini, P., Pearce, M., Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, L., Sarkar, R., Scotti, V., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Yurkin, Y. T., Zampa, G., Zampa, N., and Zverev, V. G.

Subjects
Albedo, Nuclear and High Energy Physics, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Cosmic ray, Radiation, 01 natural sciences, law.invention, Nuclear physics, symbols.namesake, law, Deuteron, PAMELA experiment, Radiation belt, 0103 physical sciences, Nuclear Experiment, 010303 astronomy & astrophysics, Settore FIS/01, Physics, Range (particle radiation), PAMELA detector, 010308 nuclear & particles physics, Van Allen radiation belt, symbols, Satellite, Nucleon
Abstract

In this work the results of data analysis of the deuteron albedo radiation obtained in the PAMELA experiment are presented. PAMELA is an international space experiment carried out on board of the satellite Resurs DK-1. The high precision detectors allow to register and identify cosmic ray particles in a wide energy range. The albedo deuteron spectrum in the energy range 70 - 600 MeV/nucleon has been measured. © 2015 Elsevier B.V..

Published
2016

17. Detectability of dark matter subhalos by means of the GAMMA-400 telescope

Author

A. M. Galper, A. A. Leonov, S. I. Suchkov, Yu. T. Yurkin, Nikolay Topchiev, A. E. Egorov, and M. D. Kheymits

Subjects
Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Nuclear and High Energy Physics, education.field_of_study, 010308 nuclear & particles physics, Population, Dark matter, FOS: Physical sciences, Astrophysics, Joint analysis, 01 natural sciences, Atomic and Molecular Physics, and Optics, Galaxy, law.invention, Telescope, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), WIMP, law, 0103 physical sciences, education, Astrophysics - High Energy Astrophysical Phenomena, 010303 astronomy & astrophysics
Abstract

We investigated the detectability of Galactic subhalos with masses $(10^6-10^9)M_{\odot}$ formed by annihilating WIMP dark matter by the planned GAMMA-400 gamma-ray telescope. The inner structure of dark matter subhalos and their distribution in the Galaxy were taken from corresponding simulations. We showed that the expected gamma-ray flux from subhalos strongly depends on WIMP mass and subhalo concentration, but less strongly depends on the subhalo mass. In an optimistic case we may expect the flux of 10-100 ph/year above 100 MeV from the closest and most massive subhalos, which would be detectable sources for GAMMA-400. However, resolving the inner structure of subhalos might be possible only by the joint analysis of the future GAMMA-400 data and data from other telescopes due to smallness of fluxes. Also we considered the recent subhalo candidates 3FGL J2212.5+0703 and J1924.8-1034 within the framework of our model. We concluded that it is very unlikely that these sources belong to the subhalo population., Was presented at International Symposium on Cosmic Rays and Astrophysics (ISCRA-2017), 20-22 June 2017, Moscow, Russia

Published
2017

18. Sharp increasing of positron to electron fluxes ratio below 2 GV measured by the PAMELA

Author

Alfonso Monaco, A. N. Kvashnin, M. Merge, V. V. Mikhailov, P. Carlson, A. G. Mayorov, G. I. Vasiliev, R. Sparvoli, N. De Simone, G. Zampa, Beatrice Panico, M. Simon, N. Zampa, Sergey Koldashov, G. A. Bazilevskaya, Yu. T. Yurkin, C. De Santis, Yu. I. Stozhkov, V. V. Malakhov, S. Yu. Krutkov, P. Picozza, Roberto Bellotti, Mark Pearce, S. B. Ricciarini, F. Palma, A. M. Galper, P. Papini, Giuseppe Osteria, E. Vannuccini, Matteo Martucci, S. A. Koldobsky, E. Mocchiutti, F. Cafagna, A. V. Karelin, Mirko Boezio, D. Campana, S. Bottai, Maria Teresa Ricci, S. A. Voronov, Marco Casolino, C. De Donato, Nicola Mori, E. A. Bogomolov, Riccardo Munini, M. Bongi, P. Spillantini, O. Adriani, W. Menn, V. Di Felice, V. Bonvicini, G. C. Barbarino, G. Castellini, L. Marcelli, A. Vacchi, A. Bruno, Alexey Leonov, Mikhailov, V. V., Adriani, O., Barbarino, G., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F. S., Campana, D., Carlson, P., Casolino, M., Castellini, G., De Donato, C., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Karelin, A. V., Koldashov, S. V., Koldobsky, S., Krutkov, S. Y., Kvashnin, A. N., Leonov, A. A., Malakhov, V. V., Marcelli, L., Martucci, M., Mayorov, A. G., Menn, W., Merge, M., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Papini, P., Palma, F., Panico, B., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasiliev, G. I., Voronov, S. A., Yurkin, Y. T., Zampa, G., and Zampa, N.

Subjects
Physics, Settore FIS/01, History, Antiparticle, PAMELA detector, Spectrometer, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Polar orbit, Cosmic ray, Astrophysics, Electron, Cosmology, Electrons, Magnetic polarity, Orbits, Positrons, Computer Science Applications, Education, law.invention, Physics and Astronomy (all), Positron, law, Physics::Space Physics, Satellite, Astrophysics::Earth and Planetary Astrophysics
Abstract

Magnetic spectrometer PAMELA was launched onboard a satellite Resurs-DK1 into low-Earth polar orbit with altitude 350-600 km to study cosmic ray antiparticle fluxes in a wide energy range from ~ 100 MeV to hundreds GeV. This paper presents the results of observations of temporal variations of the positron and electron fluxes in the 2006-2015. The ratio of the positron and electron fluxes below 2 GV shows sharp increasing since 2014 due to changing of the polarity of the solar magnetic field.

Published
2017

19. Solar modulation of cosmic deuteron fluxes in the PAMELA experiment

Author

Roberto Bellotti, A. M. Galper, V. V. Mikhailov, V. Bonvicini, Andrea Vacchi, Mark Pearce, S. B. Ricciarini, P. Papini, E. Vannuccini, M. Simon, G. Zampa, Beatrice Panico, Riccardo Munini, N. Zampa, Mirko Boezio, A. V. Karelin, R. Sparvoli, Marco Ricci, Per Carlson, Alfonso Monaco, F. Cafagna, A. N. Kvashnin, Yu. T. Yurkin, M. Merge, G. Osteria, Massimo Bongi, Sergey Koldobskiy, G. C. Barbarino, V. V. Malakhov, A. G. Mayorov, G. A. Bazilevskaya, V. Di Felice, S. Bottai, O. Adriani, E. Mocchiutti, W. Menn, A. A. Kvashnin, G. I. Vasilyev, S. Y. Krutkov, Matteo Martucci, M. F. Runtso, S. A. Voronov, P. Picozza, C. De Santis, Nicola Mori, P. Spillantini, D. Campana, Marco Casolino, Sergey Koldashov, L. Marcelli, A. Bruno, Alexey Leonov, Yuri Stozhkov, G. Castellini, E. A. Bogomolov, Koldobskiy, S. A., Adriani, O., Bazilevskaya, G. A., Barbarino, G. C., Bellotti, R., Bogomolov, E. A., Boezio, M., Bonvicini, V., Bongi, M., Bottai, S., Bruno, A., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Galper, A. M., De Santis, C., Di Felice, V., Zampa, G., Zampa, N., Casolino, M., Campana, D., Karelin, A. V., Carlson, P., Castellini, G., Cafagna, F., Kvashnin, A. A., Kvashnin, A. N., Koldashov, S. V., Krutkov, S. Y., Leonov, A. A., Mayorov, A. G., Malakhov, V. V., Martucci, M., Marcelli, L., Menn, W., Merge, M., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Panico, B., Papini, P., Picozza, P., Pearce, M., Ricci, M., Ricciarini, S. B., Runtso, M. F., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., and Yurkin, Y. T.

Subjects
Physics, COSMIC cancer database, PAMELA detector, 010308 nuclear & particles physics, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Settore FIS/04, General Physics and Astronomy, Cosmic ray, Cosmic ray measurement, Cosmic rays, Deuterium, Modulation, Solar energy Energy interval, Galactic cosmic rays, High precision detections, Measurements of, Solar activity, Solar modulation, Astrophysics, Solar energy, 01 natural sciences, Spectral line, law.invention, Physics and Astronomy (all), law, 0103 physical sciences, Physics::Space Physics, Coronal mass ejection, Satellite, Astrophysics::Earth and Planetary Astrophysics, business, Nucleon, 010303 astronomy & astrophysics
Abstract

The preliminary results from measurements of deuteron fluxes in galactic cosmic rays (GCR) in the vicinity of the Earth in 2006–2009 are presented. The results are obtained by analyzing data from the PAMELA experiment aboard the Resurs DK-1 satellite. High-precision detection instruments provided an opportunity to identify GCR deuterons and measure their spectrum in the energy interval of 90–650MeV/nucleon. Spectra averaged over six-month intervals from the summer of 2006 to the summer of 2009 (the solar activity minimum) are presented. The influence of solar modulation on the observed spectrum is clearly seen in the results.

Published
2017

20. Modulation of electrons and positrons in 2006–2015 in the PAMELA experiment

Author

E. Mocchiutti, O. Adriani, W. Menn, A. G. Mayorov, A. N. Kvashnin, A. V. Karelin, R. Sparvoli, Mark Pearce, S. B. Ricciarini, Sergey Koldobskiy, P. Papini, G. Castellini, E. Vannuccini, Yu. T. Yurkin, G. C. Barbarino, V. V. Malakhov, Mirko Boezio, Marco Ricci, C. De Santis, N. Zampa, M. Bongi, Matteo Martucci, V. Di Felice, V. Bonvicini, S. Bottai, Roberto Bellotti, A. M. Galper, Andrea Vacchi, G. Zampa, Beatrice Panico, S. Y. Krutkov, A. A. Kvashnin, G. I. Vasilyev, Per Carlson, M. Simon, F. Cafagna, L. Marcelli, G. A. Bazilevskaya, G. Osteria, A. Bruno, Nicola Mori, P. Picozza, V. V. Mikhailov, Riccardo Munini, P. Spillantini, D. Campana, M. F. Runtso, S. A. Voronov, Marco Casolino, Sergey Koldashov, Alfonso Monaco, M. Merge, Yuri Stozhkov, Alexey Leonov, E. A. Bogomolov, Mikhailov, V. V., Adriani, O., Bazilevskaya, G. A., Barbarino, G. C., Bellotti, R., Bogomolov, E. A., Boezio, M., Bonvicini, V., Bongi, M., Bottai, S., Bruno, A., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Galper, A. M., De Santis, C., Di Felice, V., Zampa, G., Zampa, N., Casolino, M., Campana, D., Karelin, A. V., Carlson, P., Castellini, G., Cafagna, F., Kvashnin, A. A., Kvashnin, A. N., Koldashov, S. V., Koldobskiy, S. A., Krutkov, S. Y., Leonov, A. A., Mayorov, A. G., Malakhov, V. V., Martucci, M., Marcelli, L., Menn, W., Merge, M., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Panico, B., Papini, P., Picozza, P., Pearce, M., Ricci, M., Ricciarini, S. B., Runtso, M. F., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., and Yurkin, Y. T.

Subjects
Physics, Settore FIS/01, Antiparticle, PAMELA detector, Spectrometer, Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, Cosmic ray, Electron, Astrophysics, 01 natural sciences, law.invention, Physics and Astronomy (all), Positron, law, 0103 physical sciences, Physics::Space Physics, Coronal mass ejection, Interplanetary magnetic field, 010306 general physics, 010303 astronomy & astrophysics, Cosmic rays, Cosmology, Magnetic polarity, Orbits, Positrons, Solar energy Magnetic spectrometers, Solar activity, Solar magnetic fields, Temporal variation, Time interval, Wide energy range
Abstract

The PAMELA magnetic spectrometer was launched aboard the Resurs DK-1 satellite into a nearpolar circumterrestrial orbit with an altitude of 350–600 km to study fluxes of the particles and antiparticles of cosmic rays in the wide energy range of ~80 MeV to several hundred gigaelectronvolts. The results from observations of temporal variations in electron and positron fluxes in 2006–2015 are presented. The ratio of electron and positron fluxes measured in this time interval reveals a dependence on the rigidity of particles, the solar activity, and the polarity of the solar magnetic field.

Published
2017

21. High-energy gamma-ray studying with GAMMA-400 after Fermi-LAT

Author

S. I. Suchkov, V. G. Zverev, Yu. I. Stozhkov, Yu. T. Yurkin, A. E. Egorov, V. V. Kadilin, Alexey Leonov, I. V. Arkhangelskaja, Valery Korepanov, Maxim S. Gorbunov, E. Mocchiutti, A. A. Moiseev, A. M. Galper, Marco Tavani, A. A. Taraskin, M. F. Runtso, Igor V. Moskalenko, V. V. Mikhailov, A.I. Arkhangelskiy, O. D. Dalkarov, M. D. Kheymits, P. Picozza, O. V. Serdin, A. V. Bakaldin, O. Adriani, P. Yu. Naumov, V. Bonvicini, Vladimir Kaplin, Yu. V. Gusakov, N. P. Topchiev, S G Bobkov, Piero Spillantini, Mirko Boezio, Bohdan Hnatyk, Francesco Longo, Roberta Sparvoli, M. Strikhanov, O. Nagornov, S. Rubin, Topchiev, N. P., Galper, A. M., Bonvicini, V., Adriani, O., Arkhangelskaja, I. V., Arkhangelskiy, A. I., Bakaldin, A. V., Bobkov, S. G., Boezio, M., Dalkarov, O. D., Egorov, A. E., Gorbunov, M. S., Gusakov, Yu. V., Hnatyk, B. I., Kadilin, V. V., Kaplin, V. A., Kheymits, M. D., Korepanov, V. E., Leonov, A. A., Longo, F., Mikhailov, V. V., Mocchiutti, E., Moiseev, A. A., Moskalenko, I. V., Naumov, P. Y., Picozza, P., Runtso, M. F., Serdin, O. V., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Suchkov, S. I., Taraskin, A. A., Tavani, M., Yurkin, Y. T., and Zverev, V. G.

Subjects
History, High energy, Elliptic orbit, 010504 meteorology & atmospheric sciences, gamma-ray astrophysics, gamma-ray telescopes, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, gamma-ray astrophysic, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, Education, law.invention, Telescope, law, 0103 physical sciences, Gamma ray, Gamma400, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, 0105 earth and related environmental sciences, Physics, Settore FIS/01, Range (particle radiation), Galactic Center, Gamma ray, Computer Science Applications, Fermi Gamma-ray Space Telescope
Abstract

Fermi-LAT has made a significant contribution to the study of high-energy gamma-ray diffuse emission and the observation of ~3000 discrete sources. However, one third of all gamma-ray sources (both galactic and extragalactic) are unidentified, the data on the diffuse gamma-ray emission should be clarified, and signatures of dark matter particles in the high-energy gamma-ray range are not observed up to now. GAMMA-400, currently developing gamma-ray telescope, will have the angular (~0.01° at 100 GeV) and energy (~1% at 100 GeV) resolutions in the energy range of 10-1000 GeV better than the Fermi-LAT (as well as ground gamma-ray telescopes) by a factor of 5-10 and observe some regions of the Universe (such as Galactic Center, Fermi Bubbles, Crab, Cygnus, etc.) in the highly elliptic orbit (without shading the telescope by the Earth) continuously for a long time. It will permit to identify many discrete sources, to clarify the structure of extended sources, to specify the data on the diffuse emission, and to resolve gamma rays from dark matter particles.

Published
2017

22. Solar modulation of galactic cosmic rays during 2006-2015 based on PAMELA and ARINA data

Author

Alfonso Monaco, S. Bottai, A. G. Mayorov, P. Picozza, M. Merge, Maria Teresa Ricci, Sergey Koldobskiy, G. C. Barbarino, P. Yu. Naumov, A. V. Karelin, P. Spillantini, Alexey Leonov, R. Sparvoli, Mark Pearce, S. B. Ricciarini, Nicola Mori, S. A. Voronov, M. Simon, P. Papini, E. Vannuccini, N. Zampa, G. A. Bazilevskaya, L. Marcelli, E. A. Bogomolov, G. Osteria, D. Campana, A. Vacchi, Laura Rossetto, V. V. Malakhov, Yu. T. Yurkin, A. Bruno, V. V. Mikhailov, O. Adriani, M. A. Mayorova, Marco Casolino, Roberto Bellotti, A. M. Galper, Matteo Martucci, W. Menn, G. I. Vasilyev, V. Di Felice, A. A. Kvashnin, Mirko Boezio, G. Castellini, G. Zampa, Beatrice Panico, Riccardo Munini, C. De Santis, S. A. Rodenko, F. Cafagna, M. Bongi, Per Carlson, V. Bonvicini, Y. Stozhkov, Sergey Aleksandrin, E. Mocchiutti, and S. V. Koldashov

Subjects
Settore FIS/01, Physics, History, Scintillation, PAMELA detector, Spectrometer, Cosmic rays, Cosmology, Magnetic polarity, Modulation, Solar energy, Spectrometers Galactic cosmic rays, Magnetic spectrometers, Solar activity, Solar magnetic fields, Solar modulation, Transient periods, Astrophysics::High Energy Astrophysical Phenomena, Cosmic ray, Astrophysics, Computer Science Applications, Education, Magnetic field, law.invention, Physics and Astronomy (all), law, Physics::Space Physics, Nuclear Experiment
Abstract

Solar modulation of galactic protons with energies from 50 MeV up to dozens of GeV during July '06 - January '16 studied based on a data of the magnetic spectrometer PAMELA and scintillation spectrometer ARINA. This period is interesting because it covers the end of 23rd and current 24th cycles of solar activity, including the abnormally long transient period and change of the polarity of solar magnetic field. © Published under licence by IOP Publishing Ltd.

Published
2017

23. New stage in high-energy gamma-ray studies with GAMMA-400 after Fermi-LAT

Author

Piero Spillantini, A. I. Arkhangelskiy, V. V. Kadilin, S. G. Bobkov, A. E. Egorov, S. I. Suchkov, O. Adriani, Igor V. Moskalenko, Alexander Moiseev, Yu. I. Stozhkov, P. Yu. Naumov, Vladimir Kaplin, V. Bonvicini, E. Mocchiutti, Marco Tavani, P. Picozza, Maxim S. Gorbunov, A. A. Taraskin, I. V. Arkhangelskaja, N. P. Topchiev, V.G. Zverev, O. V. Serdin, Mirko Boezio, A. V. Bakaldin, A. M. Galper, Yu. V. Gusakov, V. V. Mikhailov, Bohdan Hnatyk, Valery Korepanov, Francesco Longo, Roberta Sparvoli, Alexey Leonov, M. F. Runtso, O. D. Dalkarov, M. D. Kheymits, Yu. T. Yurkin, Nicolay Kolachevsky, Oleg Dalkarov, Topchiev, N. P., Galper, A. M., Bonvicini, V., Adriani, O., Arkhangelskaja, I. V., Arkhangelskiy, A. I., Bakaldin, A. V., Bobkov, S. G., Boezio, M., Dalkarov, O. D., Egorov, A. E., Gorbunov, M. S., Gusakov, Yu. V., Hnatyk, B. I., Kadilin, V. V., Kaplin, V. A., Kheymits, M. D., Korepanov, V. E., Leonov, A. A., Longo, F., Mikhailov, V. V., Mocchiutti, E., Moiseev, A. A., Moskalenko, I. V., Naumov, P. Yu., Picozza, P., Runtso, M. F., Serdin, O. V., Sparvoli, R., Spillantini, P., Stozhkov, Yu. I., Suchkov, S. I., Taraskin, A. A., Tavani, M., Yurkin, Yu. T., and Zverev, V. G.

Subjects
Elliptic orbit, gamma-ray satellites, Astrophysics::High Energy Astrophysical Phenomena, QC1-999, gamma-ray astrophysic, Dark matter, 02 engineering and technology, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, law.invention, Telescope, law, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, Settore FIS/01, Gamma Ray, GAMMA400, Range (particle radiation), Galactic Center, Gamma ray, 020206 networking & telecommunications, gamma-ray astrophysics, Stage (hydrology), Fermi Gamma-ray Space Telescope
Abstract

Fermi-LAT has made a significant contribution to the study of high-energy gamma-ray diffuse emission and the observations of 3000 discrete sources. However, one third of all gamma-ray sources (both galactic and extragalactic) are unidentified, the data on the diffuse gamma-ray emission should be clarified, and signatures of dark matter particles in the high-energy gamma-ray range are not observed up to now. GAMMA-400, the currently developing gamma-ray telescope, will have angular (∼0.01∘ at 100 GeV) and energy (∼1% at 100 GeV) resolutions in the energy range of 10–1000 GeV which are better than Fermi-LAT (as well as ground gamma-ray telescopes) by a factor of 5–10. It will observe some regions of the Universe (such as the Galactic Center, Fermi Bubbles, Crab, Cygnus, etc.) in a highly elliptic orbit (without shading the telescope by the Earth) continuously for a long time. It will allow us to identify many discrete sources, to clarify the structure of extended sources, to specify the data on the diffuse emission, and to resolve gamma rays from dark matter particles.

Published
2017

24. The PAMELA experiment: A decade of Cosmic Ray Physics in space

Author

P. Spillantini, Matteo Martucci, Yu. T. Yurkin, Nicola Mori, M. Bongi, Riccardo Munini, S. Y. Krutkov, Per Carlson, G. Zampa, A. V. Karelin, Beatrice Panico, A. N. Kvashnin, R. Sparvoli, C. De Santis, C. De Donato, V. V. Malakhov, O. Adriani, P. Picozza, W. Menn, A. G. Mayorov, S. A. Voronov, M. Merge, G. A. Bazilevskaya, Sergey Koldobskiy, G. C. Barbarino, M. Simon, G. Osteria, G. I. Vasilyev, V. Di Felice, V. Bonvicini, S. Bottai, A. Bruno, Y. I. Stozhkov, N. Zampa, Maria Teresa Ricci, F. Cafagna, E. A. Bogomolov, Roberto Bellotti, E. Mocchiutti, V. V. Mikhailov, A. M. Galper, Mark Pearce, S. B. Ricciarini, P. Papini, E. Vannuccini, L. Marcelli, A. Vacchi, F. Palma, Mirko Boezio, Alexey Leonov, G. Castellini, Sergey Koldashov, D. Campana, Marco Casolino, Galper, A. M., Sparvoli, R., Adriani, O., Barbarino, G., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carlson, P., Casolino, M., Castellini, G., De Donato, C., De Santis, C., Di Felice, V., Karelin, A. V., Koldashov, S. V., Koldobskiy, S. A., Krutkov, S. Y., Kvashnin, A. N., Leonov, A. A., Malakhov, V. V., Marcelli, L., Martucci, M., Mayorov, A. G., Menn, W., Merge, M., Mikhailov, V. V., Mocchiutti, E., Mori, N., Munini, R., Osteria, G., Palma, F., Panico, B., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Simon, M., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Yurkin, Y. T., Zampa, G., and Zampa, N.

Subjects
Physics, Settore FIS/01, History, COSMIC cancer database, 010504 meteorology & atmospheric sciences, PAMELA detector, Astronomy, Cosmic ray, Astrophysics, Space (mathematics), Carbon, Cosmology, Earth (planet), High energy physics, Positrons, Radiation belts, Solar energy Continuous data, Elemental compositions, Heliospheres, Measurements of, Quark matter, Radiation environments, Solar activity, Solar modulation, 01 natural sciences, Computer Science Applications, Education, law.invention, On board, Physics and Astronomy (all), law, 0103 physical sciences, Satellite, 010306 general physics, 0105 earth and related environmental sciences
Abstract

The PAMELA detector was launched on June 15 th of 2006 on board the Russian Resurs-DK1 satellite and during ten years of continuous data-taking it has observed very interesting features in cosmic rays, especially in the fluxes of protons, helium and electrons. Moreover, PAMELA measurements of cosmic antiproton and positron fluxes and positron-to-all-electron ratio have set strong constraints to the nature of Dark Matter. Measurements of boron, carbon, lithium and beryllium (together with the isotopic fraction) have also shed new light on the elemental composition of the cosmic radiation. Search for signatures of more exotic processes (such as the ones involving Strange Quark Matter) has also been pursued. Furthermore, over the years the instrument has allowed a constant monitoring of the solar activity and a prolonged study of the solar modulation, improving the comprehension of the heliosphere mechanisms. PAMELA has also measured the radiation environment around the Earth, and detected for the first time the presence of an antiproton radiation belt surrounding our planet. In this highlight paper PAMELA main results will be reviewed.

Published
2017

25. Geomagnetically trapped, albedo and solar energetic particles: Trajectory analysis and flux reconstruction with PAMELA

Author

G. Zampa, Beatrice Panico, Roberto Bellotti, A. M. Galper, Matteo Martucci, G. A. de Nolfo, Alfonso Monaco, A. G. Mayorov, Alexey Leonov, M. Merge, Valentina Scotti, N. Zampa, G. A. Bazilevskaya, V. Bonvicini, Y. I. Stozhkov, E. Mocchiutti, Ritabrata Sarkar, S. Bottai, Sergey Koldashov, R. Sparvoli, Sergey Koldobskiy, A. V. Karelin, Marco Ricci, V. V. Malakhov, G. C. Barbarino, G. Osteria, G. I. Vasilyev, G. Castellini, S. Y. Krutkov, James M. Ryan, V. Di Felice, C. De Santis, C. De Donato, Mirko Boezio, P. Picozza, Nicola Mori, F. Palma, M. Simon, V. V. Mikhailov, Riccardo Munini, F. Cafagna, E. C. Christian, O. Adriani, A. N. Kvashnin, W. Menn, Yu. T. Yurkin, L. Marcelli, M. Bongi, A. Vacchi, A. Bruno, Mark Pearce, S. B. Ricciarini, Steven Stochaj, P. Papini, E. Vannuccini, S. A. Voronov, E. A. Bogomolov, Per Carlson, N. De Simone, P. Spillantini, D. Campana, Marco Casolino, Bruno, A., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Bottai, S., Cafagna, F., Campana, D., Carlson, P., Casolino, M., Castellini, G., Christian, E. C., De Donato, C., de Nolfo, G. A., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Karelin, A. V., Koldashov, S. V., Koldobskiy, S., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Martucci, M., Mayorov, A. G., Menn, W., Mergè, M., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Palma, F., Panico, B., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Ryan, J. M., Sarkar, R., Scotti, V., Simon, M., Sparvoli, R., Spillantini, P., Stochaj, S., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Yurkin, Y. T., Zampa, G., and Zampa, N.

Subjects
Atmospheric Science, Solar energetic particles, 010504 meteorology & atmospheric sciences, Astrophysics::High Energy Astrophysical Phenomena, Aerospace Engineering, FOS: Physical sciences, Space weather, 01 natural sciences, law.invention, Physics::Geophysics, symbols.namesake, Physics - Space Physics, law, 0103 physical sciences, Albedo particles, Cosmic-rays, 010303 astronomy & astrophysics, Ring current, 0105 earth and related environmental sciences, Physics, Geomagnetic storm, Settore FIS/01, PAMELA detector, Astronomy, Geomagnetic cutoff, Radiation belts, Space and Planetary Science, Astronomy and Astrophysics, Space Physics (physics.space-ph), Geophysics, Earth's magnetic field, Van Allen radiation belt, Health threat from cosmic rays, Physics::Space Physics, symbols, General Earth and Planetary Sciences, Astrophysics::Earth and Planetary Astrophysics
Abstract

The PAMELA satellite experiment is providing comprehensive observations of the interplanetary and magnetospheric radiation in the near-Earth environment. Thanks to its identification capabilities and the semi-polar orbit, PAMELA is able to precisely measure the energetic spectra and the angular distributions of the different cosmic-ray populations over a wide latitude region, including geomagnetically trapped and albedo particles. Its observations comprise the solar energetic particle events between solar cycles 23 and 24, and the geomagnetic cutoff variations during magnetospheric storms. PAMELA's measurements are supported by an accurate analysis of particle trajectories in the Earth's magnetosphere based on a realistic geomagnetic field modeling, which allows the classification of particle populations of different origin and the investigation of the asymptotic directions of arrival., Comment: Accepted for publication in Advances in Space Research, 2016. 21 pages, 7 figures

Published
2017

26. Additional aperture detectors of gamma-telescope GAMMA-400 calibrations on synchrotron 'PAKHRA': possibility of temporal profiles fractal analysis

Author

N. P. Topchiev, I. V. Arkhangelskaja, Yu. T. Yurkin, M. F. Runtso, A. I. Arkhangelskiy, Alexey Leonov, S. I. Suchkov, A. E. Egorov, E. N. Chasovikov, and A. M. Galper

Subjects
Physics, History, business.industry, Aperture, Detector, Fractal analysis, Synchrotron, Computer Science Applications, Education, law.invention, Telescope, Optics, law, business
Published
2019

27. Space-based GAMMA-400 mission for direct gamma- and cosmic-ray observations

Author

A. E. Egorov, P. Yu. Naumov, Yu. T. Yurkin, A.V. Bakaldin, I. V. Arkhangelskaja, Yu. I. Stozhkov, Nikolay Topchiev, N.Yu. Pappe, Irina V. Chernysheva, A. M. Galper, O.D. Dalkarov, M. D. Kheymits, A.I. Arkhangelskiy, Y. u. V. Gusakov, M. F. Runtso, V.G. Zverev, Alexey Leonov, and S. I. Suchkov

Subjects
Physics, History, Calorimeter (particle physics), Astrophysics::High Energy Astrophysical Phenomena, Galactic Center, Dark matter, Gamma ray, Cosmic ray, Astrophysics, Computer Science Applications, Education, law.invention, Telescope, Positron, law, Fermi Gamma-ray Space Telescope
Abstract

The future space-based GAMMA-400 mission is intended for direct gamma- and cosmic-ray observations in the highly elliptic orbit during 7-10 years. GAMMA-400, currently developing gamma-ray telescope, will observe in the energy range from ~20 MeV to several TeV some regions of the Universe (such as Galactic Center, Fermi Bubbles, Crab, Cygnus, etc.) with the unprecedented angular (~0.01° at Eγ = 100 GeV) and energy (~1% at Eγ = 100 GeV) resolutions better than the Fermi-LAT, as well as ground gamma-ray telescopes, by a factor of 5-10. GAMMA-400 will also study cosmic rays in the energy range of up to ~20 TeV due to deep calorimeter (22 r.l. and 53 r.l. for vertical and lateral events, respectively). GAMMA-400 will permit to resolve gamma rays from dark matter particles, identify many discrete sources (many of which are variable), to clarify the structure of extended sources, to specify the data on the diffuse emission. GAMMA-400 will also specify the sources and the spectra of cosmic-ray electrons + positrons.

Published
2019

28. Searching for cosmic ray anisotropy using the calorimeter in the PAMELA experiment

Author

A. V. Karelin, Nicola Mori, W. Menn, Y. Wu, Andrea Vacchi, S. V. Borisov, G. A. Bazilevskaya, Giovanna Jerse, M. F. Runtso, A. M. Galper, R. Belotti, S. A. Voronov, A. N. Kvashnin, A. G. Mayorov, P. Picozza, C. Pizzolotto, Mirko Boezio, G. I. Vasilyev, R. Carbone, P. Spillantini, A. Bruno, L. Consiglio, Sergey Koldobskiy, G. C. Barbarino, C. De Santis, Mark Pearce, S. B. Ricciarini, Alfonso Monaco, N. De Simone, Laura Rossetto, Yu. T. Yurkin, P. Papini, E. Vannuccini, G. Castellini, Yu. I. Stozhkov, Giuseppe Osteria, Gianluigi Zampa, S. Bottai, V. V. Malakhov, V. G. Zverev, M. P. De Pascale, S. Yu. Krutkov, M. Bongi, E. A. Bogomolov, N. Zampa, Roberta Sparvoli, A. A. Leonov, Lorenzo Bonechi, D. Campana, Marco Casolino, L. Marcelli, O. Adriani, V. V. Mikhailov, P. Carlson, F. Cafagna, I. A. Danilchenko, S. V. Koldashov, Marco Ricci, E. Mocchiutti, M. Simon, V. Di Felice, V. Malvezzi, V. Bonvicini, A., Karelin, O., Adriani, Barbarino, Giancarlo, G., Bazilevskaya, R., Belotti, M., Boezio, E., Bogomolov, L., Bonechi, M., Bongi, V., Bonvicini, S. h., Borisov, S., Bottai, A., Bruno, A., Vacchi, E., Vannuccini, G., Vasilyev, S., Voronov, Y., Wu, A., Galper, I., Danilchenko, M. D., Pascale, C. D., Santi, N. D., Simone, V. D., Felice, G., Jerse, V., Zverev, G., Zampa, N., Zampa, F., Cafagna, D., Campana, R. h., Carbone, P., Carlson, M., Casolino, G., Castellini, A., Kvashnin, S., Koldashov, S., Koldobskiy, Consiglio, Lucia, S., Krutkov, A., Leonov, V., Malvezzi, L., Marcelli, A., Mayorov, V., Malakhov, W., Menn, V., Mikhailov, E., Mocchiutti, A., Monaco, N., Mori, Osteria, Giuseppe, P., Papini, M., Pearce, P., Picozza, C., Pizzolotto, M., Ricci, S., Ricciarini, L., Rossetto, M., Runtso, M., Simon, R., Sparvoli, P., Spillantini, Y., Stozhkov, and Y., Yurkin

Subjects
Physics, Range (particle radiation), Scintillation, genetic structures, Calorimeter (particle physics), PAMELA detector, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, Cosmic ray, Electron, Radiation, law.invention, Nuclear physics, Physics and Astronomy (all), Calorimeters, law, A-particles, Cosmic ray anisotropy, Cosmic ray spectra, Electron component, Experiment study, Nuclear components, Position sensitive, Secondary particle, High Energy Physics::Experiment, Anisotropy, Cosmic rays, Experiment, Anisotropy
Abstract

The satellite-borne PAMELA experiment studies cosmic ray spectra over a wide range of energies. The instrument was placed in orbit in June 2006 and remains there to the present day. A position-sensitive calorimeter is one of the main parts of the PAMELA instrument. The calorimeter data are used to determine the energy of particles that interact within it, separate the electron component of the detected radiation from the nuclear component, and reconstruct the tracks of particles passing through the instrument. The special calorimeter and S4 scintillation shower detector triggers enables us to expand our statistics considerably. Using the calorimeter data in generating these triggers means we can study the anisotropy of cosmic rays with energies in excess of tens of GeV. This method of anisotropy detection is based on reconstructing the direction of a particle's arrival from the axis of the secondary particle cascade in the calorimeter. ?????? 2013 Allerton Press, Inc.

Published
2013

29. Perspectives of the GAMMA-400 space observatory for high-energy gamma rays and cosmic rays measurements

Author

A. L. Menshenin, G. Castellini, M. F. Runtso, S G Bobkov, Valery Korepanov, N P Topchiev, O. D. Dalkarov, Yu. I. Stozhkov, A. A. Moiseev, R. L. Aptekar, G Bigongiari, Francesco Longo, N Finetti, C. De Donato, A. Vacchi, A Tiberio, P.W. Cattaneo, P S Marrocchesi, P. Yu. Naumov, V. V. Mikhailov, A. V. Bakaldin, Roberta Sparvoli, N. Zampa, Vladimir Kaplin, A. M. Galper, Igor V. Moskalenko, Nicola Mori, Yu. T. Yurkin, E. M. Tyurin, P. Picozza, S. Bonechi, Felix Ryde, Paolo Maestro, M. Ulanov, V. V. Kadilin, Mark Pearce, E. Vannuccini, Piero Spillantini, Maxim S. Gorbunov, O. V. Serdin, Josefin Larsson, P. Papini, Marco Tavani, A. Rappoldi, Mirko Boezio, A. A. Taraskin, S. B. Ricciarini, S. I. Suchkov, V. N. Zirakashvili, I. V. Arkhangelskaja, V. A. Loginov, O. Adriani, G. L. Dedenko, G. I. Vasilyev, Bohdan Hnatyk, V. G. Zverev, A. A. Kaplun, E. A. Bogomolov, Yu. V. Gusakov, E Berti, A.I. Arkhangelskiy, M. D. Kheymits, M. Bongi, E. Mocchiutti, P. Cumani, Alexey Leonov, V. Bonvicini, V. A. Dogiel, L. Bergstrom, S. Bottai, S. Rubin, A. Galper, A. Petrukhin, M. Skorokhvatov, Topchiev, N. P., Galper, A. M., Bonvicini, V., Adriani, O., Aptekar, R. L., Arkhangelskaja, I. V., Arkhangelskiy, A. I., Bakaldin, A. V., Bergstrom, L., Berti, E., Bigongiari, G., Bobkov, S. G., Boezio, M., Bogomolov, E. A., Bonechi, S., Bongi, M., Bottai, S., Castellini, G., Cattaneo, P. W., Cumani, P., Dalkarov, O. D., Dedenko, G. L., De Donato, C., Dogiel, V. A., Finetti, N., Gorbunov, M. S., Gusakov, Y. V., Hnatyk, B. I., Kadilin, V. V., Kaplin, V. A., Kaplun, A. A., Kheymits, M. D., Korepanov, V. E., Larsson, J., Leonov, A. A., Loginov, V. A., Longo, F., Maestro, P., Marrocchesi, P. S., Men'Shenin, A. L., Mikhailov, V. V., Mocchiutti, E., Moiseev, A. A., Mori, N., Moskalenko, I. V., Naumov, P. Y., Papini, P., Pearce, M., Picozza, P., Rappoldi, A., Ricciarini, S., Runtso, M. F., Ryde, F., Serdin, O. V., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Suchkov, S. I., Taraskin, A. A., Tavani, M., Tiberio, A., Tyurin, E. M., Ulanov, M. V., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Yurkin, Y. T., Zampa, N., Zirakashvili, V. N., and Zverev, V. G.

Subjects
History, 010504 meteorology & atmospheric sciences, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Highly elliptical orbit, cosmic-rays, Cosmic ray, Astrophysics, 01 natural sciences, Education, law.invention, Telescope, Physics and Astronomy (all), law, 0103 physical sciences, 010303 astronomy & astrophysics, 0105 earth and related environmental sciences, Physics, Settore FIS/04, Gamma ray, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, gamma-ray telescopes, Gamma-ray astronomy, Orbital period, gamma-ray telescope, Computer Science Applications, Cosmic ray measurement, Cosmic rays, Cosmology, Positrons, Space platforms, Telescopes, Tellurium compounds, Fermi Gamma-ray Space Telescope
Abstract

The GAMMA-400 gamma-ray telescope is intended to measure the fluxes of gamma-rays and cosmic-ray electrons and positrons in the energy range from 100 MeV to several TeV. Such measurements concern the following scientific tasks: investigation of point sources of gamma-rays, studies of the energy spectra of Galactic and extragalactic diffuse emission, studies of gamma-ray bursts and gamma-ray emission from the Sun, as well as high precision measurements of spectra of high-energy electrons and positrons. Also the GAMMA- 400 instrument provides the possibility for protons and nuclei measurements up to knee. But the main goal for the GAMMA-400 mission is to perform a sensitive search for signatures of dark matter particles in high-energy gamma-ray emission. To fulfill these measurements the GAMMA-400 gamma-ray telescope possesses unique physical characteristics in comparison with previous and present experiments. The major advantage of the GAMMA-400 instrument is excellent angular and energy resolution for gamma-rays above 10 GeV. The GAMMA-400 experiment will be installed onboard of the Navigator space platform, manufactured by the NPO Lavochkin Association. The expected orbit will be a highly elliptical orbit (with apogee 300.000 km and perigee 500 km) with 7 days orbital period. An important profit of such an orbit is the fact that the full sky coverage will always be available for gamma ray astronomy.

Published
2016

30. The GAMMA-400 gamma-ray telescope for precision gamma-ray emission investigations

Author

P. Yu. Naumov, Vladimir Kaplin, S. G. Bobkov, G. L. Dedenko, O. V. Serdin, Miriam Lucio Martinez, Lorenzo Bonechi, A.I. Arkhangelskiy, Igor V. Moskalenko, Bohdan Hnatyk, Piero Spillantini, R. Aptekar, V. G. Zverev, Josefin Larsson, Marco Tavani, A. Rappoldi, Yu. T. Yurkin, V. A. Dogiel, M. F. Runtso, Mirko Boezio, Francesco Longo, E. A. Bogomolov, O. Adriani, Mark Pearce, S. B. Ricciarini, Roberta Sparvoli, A. V. Bakaldin, Alexey Leonov, G Bigongiari, J. E. Ward, David Gascon, S. Bottai, M. Bongi, A. A. Moiseev, E. Mocchiutti, P. Cumani, Paolo Maestro, Nikolay Topchiev, Yu. I. Stozhkov, N Finetti, V. N. Zirakashvili, M. D. Kheymits, P S Marrocchesi, A. M. Galper, C. De Donato, Y. u. V. Gusakov, O.D. Dalkarov, V. V. Mikhailov, A Tiberio, Felix Ryde, V. Bonvicini, J. M. Paredes, P. Picozza, G. Castellini, Valery Korepanov, L. Bergstrom, N. Zampa, P. Papini, A. L. Menshenin, S. I. Suchkov, Nicola Mori, M. Ulanov, E Berti, V. V. Kadilin, G. I. Vasilyev, E. Vannuccini, A. A. Kaplun, P.W. Cattaneo, I. V. Arkhangelskaja, A. Vacchi, E. M. Tyurin, Maxim S. Gorbunov, A. A. Taraskin, V. A. Loginov, S. Rubin, A. Galper, A. Petrukhin, M. Skorokhvatov, Topchiev, N. P., Galper, A. M., Bonvicini, V., Adriani, O., Aptekar, R. L., Arkhangelskaja, I. V., Arkhangelskiy, A. I., Bakaldin, A. V., Bergstrom, L., Berti, E., Bigongiari, G., Bobkov, S. G., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bottai, S., Castellini, G., Cattaneo, P. W., Cumani, P., Dalkarov, O. D., Dedenko, G. L., De Donato, C., Dogiel, V. A., Finetti, N., Gascon, D., Gorbunov, M. S., Gusakov, Y. V., Hnatyk, B. I., Kadilin, V. V., Kaplin, V. A., Kaplun, A. A., Kheymits, M. D., Korepanov, V. E., Larsson, J., Leonov, A. A., Loginov, V. A., Longo, F., Maestro, P., Marrocchesi, P. S., Martinez, M., Men'Shenin, A. L., Mikhailov, V. V., Mocchiutti, E., Moiseev, A. A., Mori, N., Moskalenko, I. V., Naumov, P. Y., Papini, P., Paredes, J. M., Pearce, M., Picozza, P., Rappoldi, A., Ricciarini, S., Runtso, M. F., Ryde, F., Serdin, O. V., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Suchkov, S. I., Taraskin, A. A., Tavani, M., Tiberio, A., Tyurin, E. M., Ulanov, M. V., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Ward, J. E., Yurkin, Y. T., Zampa, N., Zirakashvili, V. N., and Zverev, V. G.

Subjects
History, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Astrophysics::Cosmology and Extragalactic Astrophysics, Electron, Astrophysics, 01 natural sciences, gamma-ray source, dark matter, Education, law.invention, Telescope, Physics and Astronomy (all), Positron, law, 0103 physical sciences, 010303 astronomy & astrophysics, Cosmic rays, Cosmology, Electrons, Positrons, Solar energy, Telescopes, Tellurium compounds, gamma-ray sources, Astrophysics::Galaxy Astrophysics, Physics, gamma-ray telescopes, 010308 nuclear & particles physics, Settore FIS/04, Gamma rays, Gamma ray, Astronomy, gamma-ray telescope, Computer Science Applications, Physics::Accelerator Physics, Fermi Gamma-ray Space Telescope
Abstract

The GAMMA-400 gamma-ray telescope with excellent angular and energy resolutions is designed to search for signatures of dark matter in the fluxes of gamma-ray emission and electrons + positrons. Precision investigations of gamma-ray emission from Galactic Center, Crab, Vela, Cygnus, Geminga, and other regions will be performed, as well as diffuse gamma-ray emission, along with measurements of high-energy electron + positron and nuclei fluxes. Furthermore, it will study gamma-ray bursts and gamma-ray emission from the Sun during periods of solar activity. The GAMMA-400 energy range is expected to be from ~20 MeV up to TeV energies for gamma rays, up to 10 TeV for electrons + positrons, and up to 1015 eV for cosmic-ray nuclei. For 100-GeV gamma rays, the GAMMA-400 angular resolution is ~0.01° and energy resolution is ~1%; the proton rejection factor is ~5x105. GAMMA-400 will be installed onboard the Russian space observatory.[object Object]

Published
2016

31. The high energy cosmic ray particle spectra measurements with the PAMELA calorimeter

Author

A. G. Mayorov, C. De Santis, Alfonso Monaco, Yu. T. Yurkin, Valerio Formato, M. Merge, Sergey Koldashov, R. Carbone, Sergey Koldobskiy, G. C. Barbarino, Alexey Leonov, Roberto Bellotti, F. Cafagna, P. Picozza, Ritabrata Sarkar, A. M. Galper, Matteo Martucci, M. Simon, G. Osteria, A. N. Kvashnin, O. Adriani, W. Menn, V. V. Malakhov, L. Marcelli, Mark Pearce, S. B. Ricciarini, V. G. Zverev, A. Vacchi, Nicola Mori, S. A. Voronov, G. Castellini, E. Mocchiutti, A. Bruno, E. A. Bogomolov, P. Papini, E. Vannuccini, Laura Rossetto, M. P. De Pascale, Marco Ricci, Riccardo Munini, M. Bongi, S. Yu. Krutkov, S. Bottai, N. De Simone, A. V. Karelin, G. I. Vasilyev, Mirko Boezio, V. V. Mikhailov, Ugo Giaccari, P. Carlson, M. D. Kheymits, G. Zampa, N. Zampa, G. A. Bazilevskaya, R. Sparvoli, V. Di Felice, V. Bonvicini, P. Spillantini, and Marco Casolino

Subjects
Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Cosmic ray, helium, Scintillator, 01 natural sciences, law.invention, Nuclear physics, law, 0103 physical sciences, calorimeter, Calorimeter, Electrons and positrons, Helium, Protons, Neutron detection, Ultra-high-energy cosmic ray, electrons and positrons, 010306 general physics, 010303 astronomy & astrophysics, Physics, Range (particle radiation), protons, Spectrometer, PAMELA detector, Calorimeter (particle physics), Settore FIS/04
Abstract

Up until now there has been limited, contradictive data on the high energy range of the cosmic ray electron-positron, proton and helium spectra. Due to the limitations of the use of a magnetic spectrometer, over 8 years experimental data was processed using information from a sampling electro-magnetic calorimeter, a neutron detector and scintillator detectors. The use of these devices allowed us to successfully obtain the high energy cosmic ray particle spectra measurements. The results of this study clarify previous findings and greaten our understanding of the origin of cosmic rays.

Published
2016

32. Features of re-entrant albedo deuteron trajectories in near Earth orbit with PAMELA experiment

Author

A. V. Karelin, V. Formato, S. A. Voronov, Yu. T. Yurkin, M. Merge, S. Y. Krutkov, P. Picozza, Sergey Koldashov, G. Osteria, R. Sparvoli, E. A. Bogomolov, V. V. Mikhailov, Per Carlson, Andrea Vacchi, O. Adriani, Mirko Boezio, Massimo Bongi, W. Menn, V. Di Felice, L. Marcelli, Roberto Bellotti, A. M. Galper, G. Zampa, Beatrice Panico, A. Bruno, V. V. Malakhov, Matteo Martucci, A. N. Kvashnin, D. Campana, Sergey Koldobskiy, G. C. Barbarino, N. Zampa, V. Bonvicini, Valentina Scotti, G. A. Bazilevskaya, Riccardo Munini, Y. I. Stozhkov, N. De Simone, Piero Spillantini, Marco Casolino, F. Cafagna, A. G. Mayorov, G. Castellini, F. Palma, Mark Pearce, S. B. Ricciarini, P. Papini, E. Vannuccini, Maria Teresa Ricci, C. De Donato, Ritabrata Sarkar, E. Mocchiutti, M. Simon, A. A. Leonov, S. Bottai, G. I. Vasilyev, Nicola Mori, C. De Santis, Alfonso Monaco, Koldobskiy, S. A., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carlson, P., Casolino, M., Castellini, G., De Donato, C., De Santis, C., De Simone, N., Felice, V. D., Formato, V., Galper, A. M., Karelin, A. V., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Martucci, M., Mayorov, A. G., Menn, W., Mergè, M., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Palma, F., Panico, B., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Sarkar, R., Scotti, V., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Yurkin, Y. T., Zampa, G., and Zampa, N.

Subjects
Physics, History, Earth's orbit, PAMELA detector, Settore FIS/04, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Astrophysics, Cosmic ray measurement, Cosmology, Deuterium, Orbits, Solar radiation Cosmic-ray particles, Albedo, Computer Science Applications, Education, law.invention, Nuclear physics, Physics and Astronomy (all), law, Re entrant, Nuclear Experiment, Trajectory (fluid mechanics)
Abstract

The results of trajectory reconstruction for re-entrant albedo deuteron fluxes obtained in the PAMELA experiment are presented in this work. PAMELA is an international experiment aimed on measurements of cosmic ray particle fluxes in wide energy range. In particular, analysis of PAMELA data gives possibility to identify deuterons. Classification of re-entrant albedo deuterons with energies from 70 to 400 MeV/nucleon depending on theirs reconstructed lifetimes and generation zones is presented here at first time.

Published
2016

33. Measurement of the high-energy electron and positron spectrum in the PAMELA experiment

Author

S. A. Voronov, Roberto Bellotti, G. I. Vasil’ev, Alfonso Monaco, A. N. Kvashnin, S. Bottai, P. Spillantini, C. De Santis, Laura Rossetto, G. Zampa, Mark Pearce, S. B. Ricciarini, G. Osteria, V. V. Mikhailov, P. Carlson, Petter Hofverberg, N. N. Nikonov, Nicola Mori, P. Papini, S. V. Borisov, G. A. Bazilevskaya, V. Di Felice, P. Picozza, E. Vannuccini, R. Carbone, Juan Wu, N. De Simone, V. Malvezzi, Yu. T. Yurkin, L. Consiglio, Mirko Boezio, F. Cafagna, William Gillard, O. Adriani, W. Menn, M. Simon, L. Marcelli, A. Vacchi, A. A. Leonov, V. Bonvicini, A. Bruno, M. P. De Pascale, S. Yu. Krutkov, D. Campana, Marco Casolino, N. Zampa, Lorenzo Bonechi, G. Castellini, Roberta Sparvoli, E. Mocchiutti, S. V. Koldashov, Marco Ricci, L. A. Grishantseva, A. M. Galper, Giovanna Jerse, V. G. Zverev, Yu. I. Stozhkov, and A. V. Karelin

Subjects
Physics, Range (particle radiation), Proton, PAMELA detector, Spectrometer, Astrophysics::High Energy Astrophysical Phenomena, Cosmic ray, Electron, Settore FIS/04 - Fisica Nucleare e Subnucleare, Electronic, Optical and Magnetic Materials, law.invention, Nuclear physics, Positron, law, Antiproton, Physics::Space Physics, Physics::Accelerator Physics, High Energy Physics::Experiment, Nuclear Experiment
Abstract

The PAMELA magnetic spectrometer onboard the Resurs DK1 satellite no. 1 was put into (Earth) orbit on June 15, 2006; measurements continue at the present time. The scientific objective of the spectrometer is the study of antiproton, proton, positron, electron and light nucleus fluxes in cosmic rays. In this paper, we present the technique for measuring electron and positron spectra in the energy range from 20 to 800 GeV.

Published
2010

34. Measuring the spectra of high-energy cosmic-ray particles in the PAMELA experiment

Author

L. Marcelli, A. Bruno, M. Simon, M. Bongi, V. Di Felice, A. G. Mayorov, V. Bonvicini, P. Spillantini, Marco Ricci, Roberta Sparvoli, O. Adriani, W. Menn, Mark Pearce, S. B. Ricciarini, S. Bottai, V. Malvezzi, P. Papini, E. Vannuccini, E. Mocchiutti, V. V. Mikhailov, P. Carlson, S. A. Voronov, D. Campana, V. V. Malakhov, Matteo Martucci, V. G. Zverev, P. Picozza, F. Cafagna, G. Castellini, Marco Casolino, Alexey Leonov, E. A. Bogomolov, Sergey Koldashov, Lorenzo Bonechi, Giuseppe Osteria, G. A. Bazilevskaya, N. Zampa, R. Sarkar, Andrea Vacchi, R. Carbone, Sergey Koldobskiy, G. C. Barbarino, Alfonso Monaco, F. Palma, M. Merge, Mirko Boezio, Roberto Bellotti, Yu. T. Yurkin, A. M. Galper, N. De Simone, A. N. Kvashnin, A. V. Karelin, S. Yu. Krutkov, Nicola Mori, G. I. Vasilyev, C. De Santis, C. De Donato, Gianluigi Zampa, Karelin, A. V., Adriani, O., Barbarino, Giancarlo, Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Galper, A. M., De Donato, C., De Santis, C., De Simone, N., Di Felice, V., Zverev, V. G., Zampa, G., Zampa, N., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Kvashnin, A. N., Koldashov, S. V., Koldobskiy, S. A., Krutkov, S. Y. u., Leonov, A. A., Malvezzi, V., Marcelli, L., Martucci, M., Mayorov, A. G., Malakhov, V. V., Menn, W., Merge, M., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Osteria, G., Palma, F., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Simon, M., Sarkar, R., Sparvoli, R., Spillantini, P., and Yurkin, Y. u. T.

Subjects
Physics, PAMELA detector, Spectrometer, Calorimeter (particle physics), Physics::Instrumentation and Detectors, Settore FIS/04, General Physics and Astronomy, chemistry.chemical_element, Cosmic ray, Electron, law.invention, Nuclear physics, Physics and Astronomy (all), chemistry, law, Scintillation counter, Calorimeters, Cosmic ray measurement, Energy spectra, Helium nuclei, Neutron detection, Helium
Abstract

The available data on the energy spectra of electrons, protons, and helium nuclei in the high-energy region are fragmentary, a situation made worse by their scarcity. Due to limitations imposed on the use of the magnetic spectrometer in the PAMELA satellite experiment, the calorimeter must be used for measurements performed in the high-energy region. The processing of experimental data accumulated in more than eight years of measurements with the calorimeter, neutron detector, and scintillation counters allows the spectra of high-energy particles to be obtained, greatly expanding our understanding of the nature of primary cosmic rays.

Published
2015

35. The PAMELA experiment and cosmic ray observations

Author

G. Castellini, P. Spillantini, Mirko Boezio, Alexey Leonov, Roberto Bellotti, A. M. Galper, Ritabrata Sarkar, N. Zampa, G. A. Bazilevskaya, G. Zampa, Beatrice Panico, A. N. Kvashnin, Matteo Martucci, S. Y. Krutkov, S. Bottai, F. Palma, Yu. T. Yurkin, M. Simon, Valerio Formato, M. Bongi, V. Di Felice, A. G. Mayorov, Roberta Sparvoli, P. Picozza, V. V. Malakhov, Valentina Scotti, A. V. Karelin, R. Carbone, Sergey Koldobskiy, Alfonso Monaco, G. C. Barbarino, I. A. Danilchenko, Marco Ricci, V. G. Zverev, M. Merge, O. Adriani, G. I. Vasilyev, W. Menn, E. Mocchiutti, V. V. Mikhailov, V. Bonvicini, Y. I. Stozhkov, F. Cafagna, G. Osteria, Mark Pearce, S. B. Ricciarini, Nicola Mori, C. De Santis, P. Papini, E. Vannuccini, C. De Donato, Riccardo Munini, L. Marcelli, A. Vacchi, A. Bruno, D. Campana, Marco Casolino, Sergey Koldashov, Per Carlson, N. De Simone, S. A. Voronov, E. A. Bogomolov, N., Mori, O., Adriani, G. C., Barbarino, G. A., Bazilevskaya, R., Bellotti, M., Boezio, E. A., Bogomolov, M., Bongi, V., Bonvicini, S., Bottai, A., Bruno, F., Cafagna, D., Campana, R., Carbone, P., Carlson, M., Casolino, G., Castellini, I. A., Danilchenko, C., De Donato, C., De Santi, N., De Simone, V., Di Felice, V., Formato, A. M., Galper, A. V., Karelin, S. V., Koldashov, S. A., Koldobskiy, S. Y., Krutkov, A. N., Kvashnin, A. A., Leonov, V. V., Malakhov, L., Marcelli, M., Martucci, A. G., Mayorov, W., Menn, M., Mergè, V. V., Mikhailov, E., Mocchiutti, A., Monaco, Munini, Riccardo, G., Osteria, F., Palma, B., Panico, P., Papini, M., Pearce, P., Picozza, M., Ricci, S. B., Ricciarini, M. L., Rosetto, R., Sarkar, V. M., Simon, Sparvoli, Y. I., Stozhkov, P., Vacchi, E., Vannuccini, G. I., Vasil’Ev, S. A., Voronov, Y. T., Yurkin, G., Zampa, N., Zampa, V. G., Zverev, Mori, N., Adriani, O., Barbarino, Giancarlo, Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Danilchenko, I. A., De Donato, C., De Santis, C., De Simone, N., Di Felice, V., Formato, V., Galper, A. M., Karelin, A. V., Koldashov, S. V., Koldobskiy, S., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Martucci, M., Mayorov, A. G., Menn, W., Mergé, M., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Munini, R., Osteria, G., Palma, F., Panico, B., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Sarkar, R., Scotti, V., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Yurkin, Y. T., Zampa, G., Zampa, N., and Zverev, V. G.

Subjects
Physics, Space experiments, Range (particle radiation), Nuclear and High Energy Physics, PAMELA detector, Physics::Instrumentation and Detectors, Cosmic rays, Settore FIS/04, Astrophysics::High Energy Astrophysical Phenomena, Astronomy, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, law.invention, Space experiment, law, Physics::Space Physics, High Energy Physics::Experiment, Ultra-high-energy cosmic ray, space experiments
Abstract

The \PAMELA\ space experiment is aimed at precise measurements of the charged light component of the cosmic ray spectrum in the energy range spanning from the sub-GeV region to the TeV region, with a particular focus on antimatter. The instrument consists of a magnetic spectrometer, an electromagnetic sampling calorimeter,a time-of-flight system, an anticoincidence shield, a tail-catcher scintillator and a neutron detector. Launched in June 2006 and hosted on the Resurs-DK1 satellite, \PAMELA\ has been taking data for more than eight years, providing scientific results with unprecedented statistics and a continuous monitoring of the sun activity and the heliosphere.

Published
2015

36. New Upper Limit on Strange Quark Matter Abundance in Cosmic Rays with the PAMELA Space Experiment

Author

S. Y. Krutkov, Yu. T. Yurkin, V. V. Malakhov, Alexey Leonov, S. Bottai, A. G. Mayorov, V. Formato, Ritabrata Sarkar, Mark Pearce, S. B. Ricciarini, S. A. Voronov, P. Picozza, P. Papini, Valentina Scotti, E. Vannuccini, Matteo Martucci, Roberto Bellotti, G. I. Vasilyev, A. M. Galper, E. A. Bogomolov, P. Spillantini, L. Marcelli, A. Vacchi, Per Carlson, A. N. Kvashnin, C. De Donato, Mirko Boezio, M. Simon, O. Adriani, C. De Santis, A. Bruno, Sergey Koldobskiy, G. C. Barbarino, G. Castellini, Roberta Sparvoli, W. Menn, N. De Simone, Riccardo Munini, A. V. Karelin, M. Bongi, E. Mocchiutti, V. V. Mikhailov, F. Palma, G. Osteria, V. Bonvicini, Nicola Mori, Marco Ricci, Y. I. Stozhkov, N. Zampa, G. A. Bazilevskaya, G. Zampa, Beatrice Panico, V. Di Felice, F. Cafagna, Alfonso Monaco, M. Merge, D. Campana, Marco Casolino, Sergey Koldashov, O., Adriani, G. C., Barbarino, G. A., Bazilevskaya, R., Bellotti, M., Boezio, E. A., Bogomolov, M., Bongi, V., Bonvicini, S., Bottai, A., Bruno, F., Cafagna, D., Campana, P., Carlson, M., Casolino, G., Castellini, C., De Donato, C., De Santi, N., De Simone, V., Di Felice, V., Formato, A. M., Galper, A. V., Karelin, S. V., Koldashov, S. A., Koldobskiy, S. Y., Krutkov, A. N., Kvashnin, A. A., Leonov, V., Malakhov, L., Marcelli, M., Martucci, A. G., Mayorov, W., Menn, M., Mergè, V. V., Mikhailov, E., Mocchiutti, A., Monaco, N., Mori, Munini, Riccardo, G., Osteria, F., Palma, B., Panico, P., Papini, M., Pearce, P., Picozza, M., Ricci, S. B., Ricciarini, R., Sarkar, V., Scotti, V. M., Simon, Sparvoli, P., Spillantini, Y. I., Stozhkov, P., Vacchi, E., Vannuccini, G. I., Vasilyev, S. A., Voronov, Y. T., Yurkin, G., Zampa, N., Zampa, Adriani, O, Barbarino, Giancarlo, Bazilevskaya, G. A, Bellotti, R, Boezio, M, Bogomolov, E. A, Bongi, M, Bonvicini, V, Bottai, S, Bruno, A, Cafagna, F, Campana, D, Carlson, P, Casolino, M, Castellini, G, De Donato, C, De Santis, C, De Simone, N, Di Felice, V, Formato, V, Galper, A. M, Karelin, A. V, Koldashov, S. V, Koldobskiy, S, Krutkov, S. Y, Kvashnin, A. N, Leonov, A, Malakhov, V, Marcelli, L, Martucci, M, Mayorov, A. G, Menn, W, Mergè, M, Mikhailov, V. V, Mocchiutti, E, Monaco, A, Mori, N, Munini, R, Osteria, G, Palma, F, Panico, B, Papini, P, Pearce, M, Picozza, P, Ricci, M, Ricciarini, S. B, Sarkar, R, Scotti, V, Simon, M, Sparvoli, R, Spillantini, P, Stozhkov, Y. I, Vacchi, A, Vannuccini, E, Vasilyev, G, Voronov, S. A, Yurkin, Y. T, Zampa, G, and Zampa, N.

Subjects
Physics, Quark matter, Space experiments, Cosmic rays, Spectrometers, Strange quark, PAMELA, Cosmic rays, Strange matter, PAMELA detector, Strangelet, Astrophysics::High Energy Astrophysical Phenomena, Settore FIS/01 - Fisica Sperimentale, General Physics and Astronomy, Cosmic ray, Astrophysics, law.invention, Physics and Astronomy (all), Strange matter, Rigidity (electromagnetism), Quark star, law, PAMELA, State of matter
Abstract

In this work we present results of a direct search for strange quark matter (SQM) in cosmic rays with the PAMELA space spectrometer. If this state of matter exists it may be present in cosmic rays as particles, called strangelets, having a high density and an anomalously high mass-to-charge (A/Z) ratio. A direct search in space is complementary to those from ground-based spectrometers. Furthermore, it has the advantage of being potentially capable of directly identifying these particles, without any assumption on their interaction model with Earth's atmosphere and the long-term stability in terrestrial and lunar rocks. In the rigidity range from 1.0 to ∼1.0×10^{3} GV, no such particles were found in the data collected by PAMELA between 2006 and 2009. An upper limit on the strangelet flux in cosmic rays was therefore set for particles with charge 1≤Z≤8 and mass 4≤A≤1.2×10^{5}. This limit as a function of mass and as a function of magnetic rigidity allows us to constrain models of SQM production and propagation in the Galaxy.

Published
2015

37. The GAMMA-400 experiment: Status and prospects

Author

A. M. Galper, Yu. T. Yurkin, O. V. Serdin, P. Spillantini, S. Bonechi, A. A. Kaplun, Josefin Larsson, Marco Tavani, C. Fuglesang, Felix Ryde, R. L. Aptekar, G. I. Vasilyev, A. V. Popov, G. Castellini, Igor V. Moskalenko, Maxim S. Gorbunov, Francesco Longo, S. Bottai, V. V. Kadilin, Gabriele Bigongiari, K. A. Boyarchuk, A. A. Taraskin, Nicola Mori, Eugenio Berti, A. Tiberio, M. F. Runtso, Roberta Sparvoli, Mirko Boezio, M. D. Kheymits, Valery Korepanov, A. A. Moiseev, E. A. Bogomolov, M. Bongi, P. Yu. Naumov, V. A. Loginov, C. De Donato, Vladimir Kaplin, Alexey Leonov, V. V. Mikhailov, P. Picozza, N. P. Topchiev, Paolo Maestro, Andrea Vacchi, L. Bergstrom, P. W. Cattaneo, G. L. Dedenko, Yu. V. Gusakov, S G Bobkov, N. Zampa, O. Adriani, Bohdan Hnatyk, V. G. Zverev, E. M. Tyurin, E. Mocchiutti, P. S. Marrocchesi, M. Ulanov, P. Cumani, A. Rappoldi, V. Bonvicini, V. A. Dogiel, I. V. Arkhangelskaja, S. I. Suchkov, Mark Pearce, S. B. Ricciarini, P. Papini, E. Vannuccini, V. N. Zirakashvili, A.I. Arkhangelskiy, Topchiev, N. P., Galper, A. M., Bonvicini, V., Adriani, O., Aptekar, R. L., Arkhangelskaja, I. V., Arkhangelskiy, A. I., Bergstrom, L., Berti, E., Bigongiari, G., Bobkov, S. G., Bogomolov, E. A., Boezio, M., Bongi, M., Bonechi, S., Bottai, S., Boyarchuk, K. A., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Castellini, G., Cattaneo, P. W., Cumani, P., Dedenko, G. L., Dogiel, V. A., De Donato, C., Hnatyk, B. I., Gorbunov, M. S., Gusakov, Y. V., Zampa, N., Zverev, V. G., Zirakashvili, V. N., Kadilin, V. V., Kaplin, V. A., Kaplun, A. A., Korepanov, V. E., Larsson, J., Leonov, A. A., Loginov, V. A., Longo, F., Maestro, P., Marrocchesi, P. S., Mikhailov, V. V., Mocchiutti, E., Moiseev, A. A., Mori, N., Moskalenko, I. V., Naumov, P. Y., Papini, P., Picozza, P., Pearce, M., Popov, A. V., Ryde, F., Rappoldi, A., Ricciarini, S., Runtso, M. F., Serdin, O. V., Sparvoli, R., Spillantini, P., Suchkov, S. I., Tavani, M., Taraskin, A. A., Tiberio, A., Tyurin, E. M., Ulanov, M. V., Fuglesang, C., Kheymits, M. D., and Yurkin, Y. T.

Subjects
Physics, gamma-ray astrophysics, gamma-ray telescopes, Settore FIS/04, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, gamma-ray astrophysic, General Physics and Astronomy, Astronomy, Cosmic ray, Astrophysics, Galaxy, law.invention, Telescope, Physics and Astronomy (all), law, Observatory, Angular resolution, Cosmic rays, Positrons, Telescopes, Gamma rays, Gamma-ray burst, Fermi Gamma-ray Space Telescope
Abstract

The development of the GAMMA-400 ?-ray telescope continues. The GAMMA-400 is designed to measure fluxes of ?-rays and the electron-positron cosmic-ray component possibly associated with annihilation or decay of dark matter particles; and to search for and study in detail discrete ?-ray sources, to measure the energy spectra of Galactic and extragalactic diffuse ?-rays, and to study ?-ray bursts and ?-rays from the active Sun. The energy range for measuring ?-rays and electrons (positrons) is from 100 MeV to 3000 GeV. For 100-GeV ?-rays, the ?-ray telescope has an angular resolution of ~0.01°, an energy resolution of ~1%, and a proton rejection factor of ~5 × 105. The GAMMA-400 will be installed onboard the Russian Space Observatory.

Published
2015

38. Time variations of proton flux in Earth inner radiation belt during 23/24 solar cycles based on the PAMELA and the ARINA data

Author

Yu. T. Yurkin, Mark Pearce, S. B. Ricciarini, V. Di Felice, Roberta Sparvoli, G. Zampa, Beatrice Panico, P. Papini, E. Vannuccini, D. Campana, G. C. Barbarino, Valentina Scotti, Valerio Formato, Yu. I. Stozhkov, A. M. Galper, Mirko Boezio, S. Yu. Krutkov, Alexey Leonov, N. Zampa, G. A. Bazilevskaya, S. Bottai, A. G. Mayorov, A. N. Kvashnin, Ritabrata Sarkar, M. A. Mayorova, Marco Casolino, P. Spillantini, V. V. Mikhailov, A. V. Karelin, E. Mocchuuitti, M. Simon, V. V. Malakhov, Sergey Koldashov, Riccardo Munini, G. Osteria, G. Castellini, Matteo Martucci, F. Palma, A. A. Kvashnin, Massimo Bongi, O. Adriani, L. Marcelli, F. Cafagna, W. Menn, N. De Simone, A. Bruno, Maria Teresa Ricci, P. Picozza, V. Bonvicini, Per Carlson, A. Vacci, S. A. Voronov, E. A. Bogomolov, S. Yu. Aleksandrin, G. I. Vasilyev, C. De Santis, C. De Donato, Alfonso Monaco, M. Merge, Nicola Mori, Malakhov, V. V, Koldashov, S. V, Mayorov, A. G, Mayorova, M. A, Mikhailov, V. V, Aleksandrin, S. Yu, Adriani, O, Barbarino, Giancarlo, Bazilevskaya, G. A, Boezio, M, Bogomolov, E. A, Bongi, M, Bonvicini, V, Bottai, S, Bruno, A, Cafagna, F, Campana, D, Carlson, P, Casolino, M, Castellini, G, De Donato, C, De Santis, C, De Simone, N, Di Felice, V, Formato, V, Galper, A. M, Karelin, A. V, Krutkov, S. Yu, Kvashnin, A. A, Kvashnin, A. N, Leonov, A. A, Marcelli, L, Martucci, M, Menn, W, Merge, M, Mocchuuitti, E, Monaco, A, Mori, N, Munini, R, Osteria, G, Palma, F, Panico, B, Papini, P, Pearce, M, Picozza, P, Ricci, M, Ricciarini, S. B, Sarkar, R, Scotti, V, Simon, M, Sparvoli, R, Spillantini, P, Stozhkov, Yu I, Vacci, A, Vannuccini, E, Vasilyev, G. I, Voronov, S. A, Yurkin, Yu T, Zampa, G, Zampa, N., V., Malakhov, S. V., Koldashov, A. G., Mayorov, M. A., Mayorova, V. V., Mikhailov, Aleksandrin, S. Y. u., O., Adriani, G. C., Barbarino, G. A., Bazilevskaya, M., Boezio, E. A., Bogomolov, M., Bongi, V., Bonvicini, S., Bottai, A., Bruno, F., Cafagna, D., Campana, P., Carlson, M., Casolino, G., Castellini, C., De Donato, C., De Santi, N., De Simone, V., Di Felice, V., Formato, A. M., Galper, A. V., Karelin, S. Y., Krutkov, A. A., Kvashnin, A. N., Kvashnin, A., Leonov, L., Marcelli, M., Martucci, W., Menn, M., Mergé, E., Mocchiutti, A., Monaco, N., Mori, Munini, Riccardo, G., Osteria, F., Palma, B., Panico, P., Papini, M., Pearce, P., Picozza, M., Ricci, S. B., Ricciarini, R., Sarkar, V., Scotti, M., Simon, R., Sparvoli, P., Spillantini, Y. I., Stozhkov, A., Vacchi, E., Vannuccini, G. I., Vasilyev, S. A., Voronov, Y. T., Yurkin, G., Zampa, and N., Zampa

Subjects
History, High energy, Astrophysics::High Energy Astrophysical Phenomena, Cosmic ray, Astrophysics, Proton flux, radiation belt, Education, law.invention, satellite experiment, symbols.namesake, law, PAMELA, Cosmic rays, radiation belt, proton, PAMELA, Cosmic rays, Physics, PAMELA detector, Settore FIS/04, Astronomy, Computer Science Applications, Proton (rocket family), Van Allen radiation belt, Physics::Space Physics, symbols, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, Satellite, Time variations, proton
Abstract

The PAMELA and the ARINA experiments are carried out on the board of satellite RESURS-DK1 since 2006 up to now. Main goal of the PAMELA instrument is measurements of high energy antiparticles in cosmic rays while the ARINA instrument is intended studying high energy charged particle bursts in the magnetosphere. Both of these experiments have a possibility to study trapped particles in the inner radiation belt. Complex of these two instruments covers proton energy range from 30 MeV up to trapping limit (E= ~2 GeV). Continuous measurements with the PAMELA and the ARINA spectrometers include falling and rising phases of 23/24 solar cycles and maximum of 24th one. In this report we present temporal profiles of proton flux in the inner zone of the radiation belt (1.11 < L < 1.18, 0.18 < B < 0.22G). Dependence of proton fluxes on a magnitude of the solar activity was studied for various phases of 23/24 solar cycles. At that it was shown that proton fluxes at the solar minimum are several times greater than at the solar maximum.

Published
2015

39. Search for Spatial and Temporary Variations of Galactic Cosmic Ray Positrons in PAMELA Experiment

Author

C. De Santis, Sergey Koldashov, E. A. Bogomolov, Alexey Leonov, Ritabrata Sarkar, P. Spillantini, Mirko Boezio, G. Castellini, E. Vannuccini, M. Simon, V. Bonvicini, M. Bongi, R. Sparvoli, R. Carbone, V. Formato, Sergey Koldobskiy, S. A. Voronov, D. Campana, S. Y. Krutkov, G. C. Barbarino, L. Marcelli, A. Vacchi, Yuri Stozhkov, Mark Pearce, A. V. Karelin, G. I. Vasilyev, Marco Casolino, S. B. Ricciarini, A. Bruno, V. Scotti, V. V. Malakhov, O. Adriani, N. De Simone, V. V. Mikhailov, F. Palma, E. Mocchiutti, P. Carlson, W. Menn, P. Picozza, Alfonso Monaco, G. Osteria, Nicola Mori, P. Papini, Marco Ricci, S. Bottai, M. Merge, F. Cafagna, N. Zampa, Riccardo Munini, G. A. Bazilevskaya, Roberto Bellotti, A. M. Galper, A. N. Kvashnin, G. Zampa, Beatrice Panico, C. De Donato, Matteo Martucci, Yu. T. Yurkin, V. Di Felice, A. G. Mayorov, Mikhailov, V. V., Galper, A. M., Karelin, A. V., Koldashov, S. V., Malakhov, V. V., Adriani, O., Barbarino, Giancarlo, Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., De Donato, C., De Santis, C., De Simone, N., Di Felice, V., Formato, V., Koldobskiy, S., Krutkov, S., Kvashnin, A., Leonov, A., Marcelli, L., Martucci, M., Mayorov, A. G., Menn, W., Merge, M., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Palma, F., Panico, B., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Sarkar, R., Scotti, V., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Yurkin, Y. T., Zampa, G., and Zampa, N.

Subjects
Settore FIS/01, Physics, Annihilation, Spectrometer, PAMELA detector, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, electrons, Astronomy, Cosmic ray, Astrophysics, anisotropy, Physics and Astronomy(all), law.invention, Physics and Astronomy (all), Positron, Pulsar, law, cosmic ray, positons, Neutron detection, High Energy Physics::Experiment
Abstract

The PAMELA experiment is gathering data since 2006 on board the Resurs DK1 satellite (orbit with inclination 70.4°, the altitude 350-600km). The instrument consists magnetic spectrometer, silicon-tungsten imaging electromagnetic calorimeter, neutron detector and shower scintillator that gives possibility to measure electron and positron fluxes over wide energy range from hundreds MeVs to hundreds GeVs. Results of the experiment indicate the presence of a large flux of positron with respect to electrons in the CR spectrum above 10GeV. This excess might be originated through dark matter annihilation or in local astrophysical objects such as pulsars producing possible spatial and season variations. Electron and positron events have been analyzed searching for spatial and temporal variations from June 2006 till January 2014.

Published
2015

40. Space γ-observatory GAMMA-400 Current Status and Perspectives

Author

V. Bonvicini, Valery Korepanov, V. A. Dogiel, Maxim S. Gorbunov, A. A. Taraskin, E. Mocchiutti, V. A. Loginov, M. Bongi, P. Spillantini, S G Bobkov, P. Yu. Naumov, A. M. Galper, A. Vacchi, Yu. V. Gusakov, Vladimir Kaplin, Mark Pearce, S. B. Ricciarini, E. M. Tyurin, A. Tiberio, P. Papini, L. Bergstrom, Igor V. Moskalenko, E. Vannuccini, M. F. Runtso, Francesco Longo, S. Bottai, V. V. Kadilin, R. L. Aptekar, M. D. Kheymits, I. V. Arkhangelskaja, V. N. Zirakashvili, O. Adriani, V. V. Mikhailov, A. A. Moiseev, Yu. T. Yurkin, O. V. Serdin, S. I. Suchkov, Josefin Larsson, Marco Tavani, P. Picozza, G. L. Dedenko, R. Sparvoli, N. Zampa, Bohdan Hnatyk, V. G. Zverev, G. I. Vasilyev, A.I. Arkhangelskiy, M. Ulanov, Gabriele Bigongiari, Eugenio Berti, P. Cumani, A. Rappoldi, Nicola Mori, C. De Donato, P. S. Marrocchesi, S. Bonechi, A. A. Kaplun, Felix Ryde, G. Castellini, Alexey Leonov, P. W. Cattaneo, E. A. Bogomolov, N. P. Topchiev, Paolo Maestro, Mirko Boezio, Irene V. Arkhangelskaja, Pavel Zh. Buzhan, Galper, A. M., Bonvicini, V., Topchiev, N. P., Adriani, O., Aptekar, R. L., Arkhangelskaja, I. V., Arkhangelskiy, A. I., Bergstrom, L., Berti, E., Bigongiari, G., Bobkov, S. G., Boezio, M., Bogomolov, E. A., Bonechi, S., Bongi, M., Bottai, S., Castellini, G., Cattaneo, P. W., Cumani, P., Dedenko, G. L., De Donato, C., Dogiel, V. A., Gorbunov, M. S., Gusakov, Yu. V., Hnatyk, B. I., Kadilin, V. V., Kaplin, V. A., Kaplun, A. A., Kheymits, M. D., Korepanov, V. E., Larsson, J., Leonov, A. A., Loginov, V. A., Longo, F., Maestro, P., Marrocchesi, P. S., Mikhailov, V. V., Mocchiutti, E., Moiseev, A. A., Mori, N., Moskalenko, I. V., Naumov, P. Yu., Papini, P., Pearce, M., Picozza, P., Rappoldi, A., Ricciarini, S., Runtso, M. F., Ryde, F., Serdin, O. V., Sparvoli, R., Spillantini, P., Suchkov, S. I., Tavani, M., Taraskin, A. A., Tiberio, A., Tyurin, E. M., Ulanov, M. V., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Yurkin, Yu. T., Zampa, N., Zirakashvili, V. N., and Zverev, V. G.

Subjects
Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Physics and Astronomy(all), cosmic rays, dark matter, gamma-astronomy, Space (mathematics), Physics and Astronomy (all), Measure (mathematics), law.invention, Telescope, Observatory, law, cosmic ray, Settore FIS/01, Physics, Annihilation, Astrophysics::Instrumentation and Methods for Astrophysics, General Medicine, High Energy Physics::Experiment, Current (fluid)
Abstract

GAMMA-400 γ-ray telescope is designed to measure fluxes of γ-rays and the electron–positron cosmic ray component possibly generated in annihilation or decay of dark matter particles; to search for and study in detail discrete γ-ray sources, to examine the energy spectra of Galactic and extragalactic diffuse γ-rays, to study γ-ray bursts and γ-rays from the active Sun. GAMMA-400 consists of plastic scintillation anticoincidence top and lateral detectors, converter-tracker, plastic scintillation detectors for the time-of-flight system (TOF), two-part calorimeter (CC1 and CC2), plastic scintillation lateral detectors of calorimeter, plastic scintillation detectors of calorimeter, and neutron detector. The converter-tracker consists of 13 layers of double (x, y) silicon strip coordinate detectors (pitch of 0.08mm). The first three and final one layers are without tungsten while the middle nine layers are interleaved with nine tungsten conversion foils. The thickness of CC1 and CC2 is 2 X0 (0.1λ0) and 23 X0 (1.1λ0) respectively (where X0 is radiation length and λ0 is nuclear interaction one). The total calorimeter thickness is 25 X0 or 1.2λ0 for vertical incident particles registration and 54 X0 or 2.5λ0 for laterally incident ones.The energy range for γ-rays and electrons (positrons) registration in the main aperture is from ∼0.1GeV to ∼3.0 TeV. The γ-ray telescope main aperture angular and energy resolutions are respectively ∼0.01 and ∼1% for 102 GeV γ-quanta, the proton rejection factor is ∼5×105. The first three strip layers without tungsten provide the registration of γ-rays down to ∼20 MeV in the main aperture. Also this aperture allows investigating high energy light nuclei fluxes characteristics.Electrons, positrons, light nuclei and gamma-quanta will also register from the lateral directions due to special aperture configuration. Lateral aperture energy resolution is the same as for main aperture for electrons, positrons, light nuclei and gamma-quanta in energy range E>1.0GeV. But using lateral aperture it is possible to detect low-energy gammas in the ranges 0.2 − 10 MeV and 10 MeV – 1.0GeV with energy resolution 8% − 2% and 2% correspondingly accordingly to GAMMA-400 “Technical Project” stage results. Angular resolution in the lateral aperture provides only for low-energy gamma-quanta from non-stationary events (GRB, solar flares and so on) due segments of CC2 count rate analysis.GAMMA-400 γ-ray telescope will be installed onboard the Russian Space Observatory GAMMA-400. The lifetime of the space observatory will be at least seven years. The launch of the space observatory is scheduled for the early 2020s.

Published
2015

41. Solar modulation of GCR electrons over the 23rd solar minimum with PAMELA

Author

L. Marcelli, A. Vacchi, S. Bottai, A. Bruno, E. Mocchiutti, D. Campana, Mirko Boezio, Maria Teresa Ricci, Marco Casolino, F. Cafagna, A. V. Karelin, Riccardo Munini, Etienne Vos, G. Osteria, M. S. Potgieter, O. Adriani, Massimo Bongi, Matteo Martucci, Alexey Leonov, W. Menn, V. V. Mikhailov, V. Formato, Valentina Scotti, N. Zampa, G. A. Bazilevskaya, C. De Santis, Roberto Bellotti, A. M. Galper, Sergey Koldashov, A. N. Kvashnin, Mark Pearce, S. B. Ricciarini, P. Papini, E. Vannuccini, V. Bonvicini, Y. I. Stozhkov, A. G. Mayorov, M. Simon, Sergey Koldobskiy, F. Palma, G. C. Barbarino, V. Di Felice, Nicola Mori, V. V. Malakhov, C. De Donato, G. I. Vasilyev, Roberta Sparvoli, S. Y. Krutkov, P. Picozza, P. Spillantini, Alfonso Monaco, M. Merge, Ritabrata Sarkar, S. A. Voronov, E. A. Bogomolov, N. De Simone, G. Castellini, Per Carlson, Yu. T. Yurkin, G. Zampa, Beatrice Panico, Munini, R, Di Felice, V, Adriani, O, Barbarino, Giancarlo, Bazilevskaya, G. A, Bellotti, R, Boezio, M, Bogomolov, E. A, Bongi, M, Bonvicini, V, Bottai, S, Bruno, A, Cafagna, F, Campana, D, Carlson, P, Casolino, M, Castellini, G, De Donato, C, De Santis, C, De Simone, N, Formato, V, Galper, A. M, Karelin, A. V, Koldashov, S. V, Koldobskiy, S, Krutkov, S. Y, Kvashnin, A. N, Leonov, A, Malakhov, V, Marcelli, L, Martucci, M, Mayorov, A. G, Menn, W, Merge, M, Mikhailov, V. V, Mocchiutti, E, Monaco, A, Mori, N, Osteria, G, Palma, F, Panico, B, Papini, P, Pearce, M, Picozza, P, Ricci, M, Ricciarini, S. B, Sarkar, R, Scotti, V, Simon, M, Sparvoli, R, Spillantini, P, Stozhkov, Y. I, Vacchi, A, Vannuccini, E, Vasilyev, G, Voronov, S. A, Yurkin, Y. T, Zampa, G, Zampa, N, Potgieter, M. S, Vos, E. E., Munini, Riccardo, V., Di Felice, O., Adriani, G. C., Barbarino, G. A., Bazilevskaya, R., Bellotti, M., Boezio, E. A., Bogomolov, M., Bongi, V., Bonvicini, S., Bottai, A., Bruno, F., Cafagna, D., Campana, P., Carlson, M., Casolino, G., Castellini, C., De Donato, C., De Santi, N., De Simone, V., Formato, A. M., Galper, A. V., Karelin, S. V., Koldashov, S., Koldobskiy, S. Y., Krutkov, A. N., Kvashnin, A., Leonov, V., Malakhov, L., Marcelli, M., Martucci, A. G., Mayorov, W., Menn, M., Mergé, V. V., Mikhailov, E., Mocchiutti, A., Monaco, N., Mori, G., Osteria, F., Palma, B., Panico, P., Papini, M., Pearce, P., Picozza, M., Ricci, S. B., Ricciarini, R., Sarkar, V., Scotti, M., Simon, R., Sparvoli, P., Spillantini, Y. I., Stozhkov, A., Vacchi, E., Vannuccini, G. I., Vasilyev, S. A., Voronov, Y. T., Yurkin, G., Zampa, N., Zampa, M. S., Potgieter, and E. E., Vos

Subjects
Solar minimum, electron, History, Antiparticle, Astrophysics::High Energy Astrophysical Phenomena, solar minimum, Solar cycle 23, Cosmic ray, Astrophysics, Solar Modulation, electron, solar minimum, PAMELA, Education, law.invention, Physics and Astronomy (all), law, PAMELA, Cosmology, Modulation, Solar energy Apparatus design, Charged components, Electron spectrum, Galactic cosmic rays, Solar minima, Solar modulation, Solar modulation effects, Coronal mass ejection, Physics, PAMELA detector, Settore FIS/04, Computer Science Applications, Solar cycle, Solar Modulation, Antimatter, Physics::Space Physics, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING
Abstract

The satellite-borne PAMELA experiment has been continuously collecting data since 15th June 2006, when it was launched from the Baikonur cosmodrome to detect the charged component of cosmic rays over a wide energy range and with unprecedented statistics. The apparatus design is particularly suited for particle and antiparticle identification. The PAMELA experiment has measured the electron spectrum at Earth in great detail, extending up to about 100 GeV and down to about 200 MeV. The galactic cosmic ray electron spectra for 2007 and 2009, i.e. measured during the A

Published
2015

42. PAMELA measurements of the boron and carbon spectra

Author

Alexey Leonov, A. G. Mayorov, Ritabrata Sarkar, G. Zampa, Beatrice Panico, S. Y. Krutkov, Yu. T. Yurkin, A. V. Karelin, C. De Santis, N. Zampa, G. A. Bazilevskaya, P. Picozza, P. Spillantini, Valerio Formato, C. De Donato, G. Osteria, Riccardo Munini, D. Campana, R. Carbone, O. Adriani, Alfonso Monaco, Sergey Koldobskiy, V. Di Felice, G. C. Barbarino, W. Menn, V. Bonvicini, V. V. Malakhov, Marco Casolino, Roberto Bellotti, Valentina Scotti, G. Castellini, A. M. Galper, L. Marcelli, Y. I. Stozhkov, A. Vacchi, S. Bottai, A. Bruno, M. Merge, N. De Simone, M. Bongi, A. N. Kvashnin, Mark Pearce, S. B. Ricciarini, Sergey Koldashov, Nicola Mori, P. Papini, Matteo Martucci, E. Vannuccini, Mirko Boezio, S. A. Voronov, G. I. Vasilyev, Per Carlson, E. A. Bogomolov, F. Palma, V. V. Mikhailov, Maria Teresa Ricci, F. Cafagna, M. Simon, Roberta Sparvoli, E. Mocchiutti, N., Mori, O., Adriani, G. C., Barbarino, G. A., Bazilevskaya, R., Bellotti, M., Boezio, E. A., Bogomolov, M., Bongi, V., Bonvicini, S., Bottai, A., Bruno, F., Cafagna, D., Campana, R., Carbone, P., Carlson, M., Casolino, G., Castellini, C., De Donato, C., De Santi, N., De Simone, V., Di Felice, V., Formato, A. M., Galper, A. V., Karelin, S. V., Koldashov, S., Koldobskiy, S. Y., Krutkov, A. N., Kvashnin, A., Leonov, V., Malakhov, L., Marcelli, M., Martucci, A. G., Mayorov, W., Menn, M., Mergé, V. V., Mikhailov, E., Mocchiutti, A., Monaco, Munini, Riccardo, G., Osteria, F., Palma, B., Panico, P., Papini, M., Pearce, P., Picozza, M., Ricci, S. B., Ricciarini, R., Sarkar, V., Scotti, M., Simon, R., Sparvoli, P., Spillantini, Y. I., Stozhkov, A., Vacchi, E., Vannuccini, G. I., Vasilyev, S. A., Voronov, Y. T., Yurkin, G., Zampa, N., Zampa, Mori, N, Adriani, O, Barbarino, Giancarlo, Bazilevskaya, G. A, Bellotti, R, Boezio, M, Bogomolov, E. A, Bongi, M, Bonvicini, V, Bottai, S, Bruno, A, Cafagna, F, Campana, D, Carbone, R, Carlson, P, Casolino, M, Castellini, G, De Donato, C, De Santis, C, De Simone, N, Felice, V. Di, Formato, V, Galper, A. M, Karelin, A. V, Koldashov, S. V, Koldobskiy, S, Krutkov, S. Y, Kvashnin, A. N, Leonov, A, Malakhov, V, Marcelli, L, Martucci, M, Mayorov, A. G, Menn, W, Mergé, M, Mikhailov, V. V, Mocchiutti, E, Monaco, A, Munini, R, Osteria, G, Palma, F, Panico, B, Papini, P, Pearce, M, Picozza, P, Ricci, M, Ricciarini, S. B, Sarkar, R, Scotti, V, Simon, M, Sparvoli, R, Spillantini, P, Stozhkov, Y. I, Vacchi, A, Vannuccini, E, Vasilyev, G. I, Voronov, S. A, Yurkin, Y. T, Zampa, G, and Zampa, N.

Subjects
History, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, chemistry.chemical_element, Cosmic ray, Spectral line, Education, law.invention, Nuclear physics, Physics and Astronomy (all), cosmic rays, law, PAMELA, Boron, Cosmic ray measurement, Cosmology, High energy physics Anticoincidence systems, Boron and carbons, Cosmic ray spectra, Data analysis techniques, Electromagnetic calorimeter, Injection spectra, Magnetic spectrometers, Time of flight systems, Neutron detection, Physics, carbon boron, Spectrometer, PAMELA detector, Settore FIS/04, PAMELA, cosmic rays, carbon boron, fluxes, fluxes, Computer Science Applications, chemistry, Antimatter, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, Carbon
Abstract

The satellite-borne PAMELA experiment is aimed at precision measurements of the charged light component of the cosmic-ray spectrum, with a particular focus on antimatter. It consists of a magnetic spectrometer, a time-of-flight system, an electromagnetic calorimeter with a tail catcher scintillating layer, an anticoincidence system and a neutron detector. PAMELA has measured the absolute fluxes of boron and carbon and the B/C ratio, which plays a central role in galactic propagation studies in order to derive the injection spectra at sources from measurements at Earth. In this paper, the data analysis techniques and the final results are presented.

Published
2015

43. Measurement of electron-positron spectrum in high-energy cosmic rays in the PAMELA experiment

Author

S. Bottai, Roberta Sparvoli, Sergey Koldobskiy, A. V. Karelin, G. C. Barbarino, Alfonso Monaco, Yu. T. Yurkin, D. Campana, G. Osteria, Riccardo Munini, M. Merge, L. Marcelli, A. Vacchi, Per Carlson, Marco Casolino, A. Bruno, F. Palma, V. V. Malakhov, S. Y. Krutkov, Sergey Koldashov, Massimo Bongi, S. A. Voronov, Roberto Bellotti, G. Zampa, Beatrice Panico, R. Carbone, A. M. Galper, E. A. Bogomolov, N. Zampa, G. A. Bazilevskaya, Valentina Scotti, A. N. Kvashnin, P. Picozza, G. Castellini, Laura Rossetto, Mirko Boezio, Mark Pearce, S. B. Ricciarini, Alexey Leonov, N. De Simone, P. Papini, E. Vannuccini, Ritabrata Sarkar, Valerio Formato, V. V. Mikhailov, M. Simon, O. Adriani, W. Menn, Matteo Martucci, F. Cafagna, Maria Teresa Ricci, Piero Spillantini, A. G. Mayorov, G. I. Vasilyev, C. De Santis, C. De Donato, Nicola Mori, E. Mocchiutti, V. Di Felice, V. Bonvicini, A. V., Karelin, O., Adriani, G. C., Barbarino, G. A., Bazilevskaya, R., Bellotti, M., Boezio, E. A., Bogomolov, M., Bongi, V., Bonvicini, S., Bottai, A., Bruno, F., Cafagna, D., Campana, R., Carbone, P., Carlson, M., Casolino, G., Castellini, C., De Donato, C., De Santi, N., De Simone, V., Di Felice, V., Formato, A. M., Galper, S. V., Koldashov, S., Koldobskiy, S. Y., Krutkov, A. N., Kvashnin, A., Leonov, A. G., Mayorov, V., Malakhov, L., Marcelli, M., Martucci, W., Menn, M., Mergé, V. V., Mikhailov, E., Mocchiutti, A., Monaco, N., Mori, Munini, Riccardo, G., Osteria, F., Palma, B., Panico, P., Papini, M., Pearce, P., Picozza, M., Ricci, S. B., Ricciarini, R., Sarkar, V., Scotti, L., Rossetto, M., Simon, R., Sparvoli, P., Spillantini, A., Vacchi, E., Vannuccini, G. I., Vasilyev, S. A., Voronov, Y. T., Yurkin, G., Zampa, N., Zampa, Karelin, A. V, Adriani, O, Barbarino, Giancarlo, Bazilevskaya, G. A, Bellotti, R, Boezio, M, Bogomolov, E. A, Bongi, M, Bonvicini, V, Bottai, S, Bruno, A, Cafagna, F, Campana, D, Carbone, R, Carlson, P, Casolino, M, Castellini, G, De Donato, C, De Santis, C, De Simone, N, Felice, V. Di, Formato, V., Galper, A. M, Koldashov, S. V, Koldobskiy, S. A, Krutkov, S. Y, Kvashnin, A. N, Leonov, A. A, Mayorov, A. G, Malakhov, V. V, Marcelli, L, Martucci, M., Menn, W, Merge, M., Mikhailov, V. V, Mocchiutti, E, Monaco, A, Mori, N, Munini, R., Osteria, G, Palma, F, Panico, B., Papini, P, Pearce, M, Picozza, P, Ricci, M, Ricciarini, S. B, Sarkar, R, Scotti, V., Rossetto, L, Simon, M, Sparvoli, R, Spillantini, P, Vacchi, A, Vannuccini, E, Vasilyev, G. I, Voronov, S. A, Yurkin, Y. T, Zampa, G, and Zampa, N.

Subjects
electron, History, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Cosmic rays, positron, electron, PAMELA, Cosmic ray, Particle detector, Education, law.invention, Nuclear physics, Physics and Astronomy (all), Positron, law, PAMELA, Neutron detection, Ultra-high-energy cosmic ray, Cosmic rays, Physics, Calorimeter (particle physics), PAMELA detector, Settore FIS/04, Computer Science Applications, Antimatter, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, positron, High Energy Physics::Experiment, Calorimeters, Cosmic ray measurement, Cosmology, Electron energy levels, Positrons, Tellurium compounds Cosmic ray electrons, Energy ranges, High-energy cosmic rays, High-energy electron, High-energy range
Abstract

At present the existing data on the cosmic ray electron energy spectra in the high energy range are fragmented, and the situation is exacerbated by their small number. In the satellite PAMELA experiment measurements at high energies are carried out by the calorimeter. The experimental data accumulated for more than 8 years of measurements, with the information of the calorimeter, the neutron detector and the scintillation counters made it possible to obtain the total spectrum of high-energy electrons and positrons in energy range 0.3-3 TeV.

Published
2015

44. Searching for anisotropy of positrons and electrons in the PAMELA experiment

Author

N. Zampa, Alfonso Monaco, Mark Pearce, S. B. Ricciarini, C. De Santis, Giuseppe Osteria, G. A. Bazilevskaya, P. Picozza, P. Papini, V. G. Zverev, E. Vannuccini, C. De Donato, Alexey Leonov, P. Spillantini, R. Carbone, V. Malvezzi, M. Merge, F. Palma, Sergey Koldobskiy, Sergey Koldashov, Ritabrata Sarkar, Nicola Mori, S. A. Voronov, Roberta Sparvoli, G. C. Barbarino, S. Bottai, G. Zampa, Beatrice Panico, Yu. I. Stozhkov, O. Adriani, Mirko Boezio, V. V. Malakhov, Lorenzo Bonechi, V. Bonvicini, D. Campana, L. Marcelli, G. I. Vasilyev, V. V. Mikhailov, G. Castellini, M. Bongi, A. Vacchi, P. Carlson, A. Bruno, Roberto Bellotti, Marco Casolino, A. M. Galper, E. A. Bogomolov, E. Mocchiutti, F. Cafagna, A. N. Kvashnin, A. V. Karelin, Yu. T. Yurkin, Riccardo Munini, W. Menn, M. Simon, V. Di Felice, Marco Ricci, N. De Simone, S. Yu. Krutkov, A. G. Mayorov, Matteo Martucci, V. V., Mikhailov, O., Adriani, G. C., Barbarino, G., A., R., Bellotti, M., Boezio, E., A., L., Bonechi, M., Bongi, V., Bonvicini, S., Bottai, A., Bruno, A., Vacchi, E., Vannuccini, G. I., Vasilyev, S. A., Voronov, A. M., Galper, C., De Donato, C., De Santi, N., De Simone, V., Di Felice, V. G., Zverev, G., Zampa, N., Zampa, F., Cafagna, D., Campana, R., Carbone, A. V., Karelin, P., Carlson, M., Casolino, G., Castellini, A. N., Kvashnin, S. V., Koldashov, S. A., Koldobskiy, Krutkov, S. Y. u., A. A., Leonov, V., Malvezzi, L., Marcelli, M., Martucci, A. G., Mayorov, V., Malakhov, W., Menn, M., Merge, E., Mocchiutti, A., Monaco, N., Mori, Munini, Riccardo, G., Osteria, F., Palm, B., Panico, P., Papini, M., Pearce, P., Picozza, M., Ricci, S. B., Ricciarini, M., Simon, R., Sarkar, R., Sparvoli, P., Spillantini, Stozhkov, Y. u. I., Yurkin, Y. u. T., Mikhailov, V. V., Adriani, O., Barbarino, Giancarlo, Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Galper, A. M., De Donato, C., De Santis, C., De Simone, N., Di Felice, V., Zverev, V. G., Zampa, G., Zampa, N., Cafagna, F., Campana, D., Carbone, R., Karelin, A. V., Carlson, P., Casolino, M., Castellini, G., Kvashnin, A. N., Koldashov, S. V., Koldobskiy, S. A., Leonov, A. A., Malvezzi, V., Marcelli, L., Martucci, M., Mayorov, A. G., Malakhov, V., Menn, W., Merge, M., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Palma, F., Panico, B., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Simon, M., Sarkar, R., Sparvoli, R., and Spillantini, P.

Subjects
Physics, positrons, Annihilation, PAMELA detector, Settore FIS/04, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, electrons, General Physics and Astronomy, Cosmic ray, Astrophysics, Electron, anisotropy, law.invention, Physics and Astronomy (all), Positron, Pulsar, cosmic rays, law, PAMELA, Positron sources, Anisotropy, Electrons, PAMELA, cosmic rays, anisotropy, positrons, electrons
Abstract

The PAMELA experiment has been under way aboard the Resurs DK-1 satellite since June 2006. The results have revealed an increase in the ratio of the positron intensity to the total electron and positron intensity at energies in excess of 10 GeV. This increase suggests an additional source of cosmic rays that is associated with either some astrophysical objects (e.g., pulsars) or the probable annihilation of particles of dark matter. Local positron sources can produce notable anisotropy in their flux. The results from the search for anisotropy of positrons and electrons in the events detected by the PAMELA experiment in the 2006-2013 timeframe are described in detail in this work.

Published
2015

45. GAMMA-400 gamma-ray observatory

Author

G. L. Dedenko, Bohdan Hnatyk, V. G. Zverev, J. M. Paredes, I. V. Arkhangelskaja, S. I. Suchkov, M. Bongi, S. Bottai, O.D. Dalkarov, F. Longo, A. A. Moiseev, Yu. T. Yurkin, L. Bergstrom, R. Sparvoli, C. DeDonato, S. G. Bobkov, A. A. Kaplun, David Gascon, E. Mocchiutti, M. F. Runtso, P. Picozza, N. Zampa, P. Spillantini, Nikolay Topchiev, Igor V. Moskalenko, O. Adriani, Mark Pearce, S. B. Ricciarini, J. E. Ward, N. Finetti, P. Papini, E. Vannuccini, M. Tavani, V. V. Mikhailov, E. A. Bogomolov, P. Cumani, Lorenzo Bonechi, A.I. Arkhangelskiy, A. Tiberio, V. N. Zirakashvili, A. L. Menshenin, Yu. I. Stozhkov, A. Rappoldi, V. Bonvicini, Felix Ryde, V. A. Dogiel, G. Castellini, A. V. Bakaldin, P. W. Cattaneo, Valery Korepanov, M. D. Kheymits, M. Ulanov, Yu. V. Gusakov, A. Vacchi, E. M. Tyurin, Maxim S. Gorbunov, Mirko Boezio, A. A. Taraskin, V. A. Loginov, Paolo Maestro, P. S. Marrocchesi, V. V. Kadilin, A. M. Galper, A. Leonov, Nicola Mori, G. I. Vasilyev, O. V. Serdin, Gabriele Bigongiari, Miriam Lucio Martinez, Eugenio Berti, R. Aptekar, Josefin Larsson, P. Yu. Naumov, Vladimir Kaplin, A.M. van den Berg, Topchiev, N. P., Galper, A. M., Bonvicini, V., Adriani, O., Aptekar, R. L., Arkhangelskaja, I. V., Arkhangelskiy, A. I., Bakaldin, A. V., Bergstrom, L., Berti, E., Bigongiari, G., Bobkov, S. G., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bottai, S., Castellini, G., Cattaneo, P. W., Cumani, P., Dalkarov, O. D., Dedenko, G. L., Dedonato, C., Dogiel, V. A., Finetti, N., Gascon, D., Gorbunov, M. S., Gusakov, Yu. V., Hnatyk, B. I., Kadilin, V. V., Kaplin, V. A., Kaplun, A. A., Kheymits, M. D., Korepanov, V. E., Larsson, J., Leonov, A. A., Loginov, V. A., Longo, F., Maestro, P., Marrocchesi, P. S., Martinez, M., Men'Shenin, A. L., Mikhailov, V. V., Mocchiutti, E., Moiseev, A. A., Mori, N., Moskalenko, I. V., Naumov, P. Yu., Papini, P., Paredes, J. M., Pearce, M., Picozza, P., Rappoldi, A., Ricciarini, S., Runtso, M. F., Ryde, F., Serdin, O. V., Sparvoli, R., Spillantini, P., Stozhkov, Yu. I., Suchkov, S. I., Taraskin, A. A., Tavani, M., Tiberio, A., Tyurin, E. M., Ulanov, M. V., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Ward, J. E., Yurkin, Yu. T., Zampa, N., Zirakashvili, V. N., and Zverev, V. G.

Subjects
Physics, Multidisciplinary, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Gamma ray, FOS: Physical sciences, gamma-ray telescopes, Astrophysics::Cosmology and Extragalactic Astrophysics, Electron, Astrophysics, dark matter, cosmic rays, gamma-ray telescope, Galaxy, law.invention, Telescope, Observatory, law, Physics::Accelerator Physics, Angular resolution, Gamma-ray burst, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Astrophysics::Galaxy Astrophysics
Abstract

The GAMMA-400 gamma-ray telescope with excellent angular and energy resolutions is designed to search for signatures of dark matter in the fluxes of gamma-ray emission and electrons + positrons. Precision investigations of gamma-ray emission from Galactic Center, Crab, Vela, Cygnus, Geminga, and other regions will be performed, as well as diffuse gamma-ray emission, along with measurements of high-energy electron + positron and nuclei fluxes. Furthermore, it will study gamma-ray bursts and gamma-ray emission from the Sun during periods of solar activity. The energy range of GAMMA-400 is expected to be from ~20 MeV up to TeV energies for gamma rays, up to 20 TeV for electrons + positrons, and up to 10E15 eV for cosmic-ray nuclei. For high-energy gamma rays with energy from 10 to 100 GeV, the GAMMA-400 angular resolution improves from 0.1{\deg} to ~0.01{\deg} and energy resolution from 3% to ~1%; the proton rejection factor is ~5x10E5. GAMMA-400 will be installed onboard the Russian space observatory., Comment: 8 pages, 2 figures, 2 tables, submitted to the proceedings of ICRC2015

Published
2015

46. The structure, logic of operation and distinctive features of the system of triggers and counting signals formation for gamma-telescope GAMMA-400

Author

Yu. T. Yurkin, A. M. Galper, A. I. Arkhangelskiy, Nikolay Topchiev, M. D. Kheymits, I. V. Arkhangelskaja, and S. I. Suchkov

Subjects
Physics, Structure (mathematical logic), History, business.industry, Cosmic ray, Computer Science Applications, Education, law.invention, Telescope, Optics, law, Computer vision, Artificial intelligence, business, Gamma detection
Published
2017

47. Gamma-quanta and charged particles recognition by the counting and triggers signals formation system of GAMMA-400 space gamma-telescope

Author

A. E. Murchenko, S. I. Suchkov, A. M. Galper, M. D. Kheymits, A.I. Arkhangelskiy, Yu. T. Yurkin, I. V. Arkhangelskaja, E. N. Chasovikov, and N. P. Topchiev

Subjects
Physics, History, Antiparticle, Particle detector, Charged particle, Computer Science Applications, Education, law.invention, Telescope, Nuclear physics, Positron, law, Antimatter, Scintillation counter, Lepton
Published
2017

48. The search for antihelium in cosmic rays using data from the PAMELA experiment

Author

N. V. Nikonov, L. A. Grishantseva, V. V. Mikhailov, P. Carlson, G. Jerse, Roberta Sparvoli, S. A. Koldobsky, William Gillard, Mirko Boezio, Yu. T. Yurkin, P. Pizzolotto, Y. Wu, M. F. Runtso, A. Bruno, S. A. Voronov, F. Cafagna, Yu. I. Stozhkov, V. G. Zverev, P. Picozza, Roberto Bellotti, P. Spillantini, I. A. Danilchenko, E. A. Bogomolov, Nicola Mori, Andrea Vacchi, Lorenzo Bonechi, G. I. Vasiliev, S. Bottai, A. M. Galper, M. P. De Pascale, N. De Simone, S. V. Borisov, D. Campana, G. Castellini, S. Yu. Krutkov, A. N. Kvashnin, R. Carbone, Marco Casolino, V. V. Malakhov, A. V. Karelin, G. C. Barbarino, Gianluigi Zampa, L. Marcelli, M. Pearce, Giuseppe Osteria, N. Zampa, G. A. Bazilevskaya, O. Adriani, W. Menn, M. Bongi, V. Bonvicini, S. B. Ricciarini, P. Papini, E. Vannuccini, E. Mocchiutti, V. Di Felice, S. V. Koldashov, M. Simon, Marco Ricci, V. Malvezzi, A. A. Leonov, and A. G. Mayorov

Subjects
Physics, PAMELA detector, Astrophysics::High Energy Astrophysical Phenomena, media_common.quotation_subject, General Physics and Astronomy, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Asymmetry, Galaxy, Universe, law.invention, Baryon, Physics and Astronomy (all), Baryon asymmetry, law, Antimatter, media_common
Abstract

The generally accepted theory explaining the observed cosmological baryon asymmetry involves mechanisms of baryosynthesis that generate asymmetry in an initially baryon symmetric Universe. Due to the possible inhomogeneous spatial nature of such mechanisms, antimatter domains could arise in the Universe. This hypothesis can be tested by the direct measurement of fluxes of antinuclei in cosmic rays. Searching for antihelium nuclei is therefore among the objectives of the PAMELA experiment. We analyzed data from August 2006 to December 2009 and obtained a preliminary value for the upper limit of the antihelium/helium flux ratio that could lead to some restrictions on the existing theoretical models of the production and propagation of antimatter in the Galaxy. © 2011 Allerton Press, Inc.

Published
2011

49. New measurements of the energy spectra of high-energy cosmic-ray protons and helium nuclei with the calorimeter in the PAMELA experiment

Author

V. Bonvicini, P. Spillantini, S. Bottai, S. Yu. Krutkov, V. G. Zverev, N. De Simone, Alfonso Monaco, N. Zampa, R. Sarkar, C. Pizzolotto, Nicola Mori, M. Simon, Yu. T. Yurkin, A. A. Leonov, Mark Pearce, S. B. Ricciarini, Roberta Sparvoli, O. Adriani, P. Papini, W. Menn, V. Di Felice, E. Vannuccini, S. A. Voronov, Per Carlson, V. Malvezzi, P. Picozza, A. M. Galper, F. Cafagna, Mirko Boezio, Marco Ricci, G. I. Vasilyev, M. Merge, M. Bongi, G. A. Bazilevskaya, R. Carbone, Sergey Koldobskiy, G. C. Barbarino, C. De Santis, A. Bruno, Matteo Martucci, C. De Donato, F. Palma, Gianluigi Zampa, V. V. Mikhailov, Andrea Vacchi, Yu. I. Stozhkov, L. Marcelli, Giuseppe Osteria, A. G. Mayorov, E. Mocchiutti, G. Castellini, V. V. Malakhov, L. Boneci, E. A. Bogomolov, Roberto Bellotti, A. N. Kvashnin, Sergey Koldashov, D. Campana, A. V. Karelin, Marco Casolino, A., Karelin, O., Adriani, Barbarino, Giancarlo, G., Bazilevskaya, R., Bellotti, M., Boezio, E., Bogomolov, L., Boneci, M., Bongi, V., Bonvicini, S., Bottai, A., Bruno, A., Vacchi, E., Vannuccini, G., Vasilyev, S., Voronov, A., Galper, C. D., Donato, C. D., Santi, N. D., Simone, V. D., Felice, V., Zverev, G., Zampa, N., Zampa, F., Cafagna, D., Campana, R. h., Carbone, P., Carlson, M., Casolino, G., Castellini, A., Kvashnin, S., Koldashov, S., Koldobskiy, S., Krutkov, A., Leonov, V., Malvezzi, L., Marcelli, M., Martucci, A., Mayorov, V., Malakhov, W., Menn, M., Merge, V., Mikhailov, E., Mocchiutti, A., Monaco, N., Mori, Osteria, Giuseppe, F., Palma, P., Papini, M., Pearce, P., Picozza, C., Pizzolotto, M., Ricci, S., Ricciarini, R., Sarkar, M., Simon, R., Sparvoli, P., Spillantini, Y., Stozhkov, and Y., Yurkin

Subjects
Physics, PAMELA detector, Solid-state physics, Calorimeter (particle physics), Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, General Physics and Astronomy, chemistry.chemical_element, Cosmic ray, Alpha particle, respiratory system, Spectral line, law.invention, Nuclear physics, Physics and Astronomy (all), chemistry, Energy spectra, Event selection, Helium nuclei, Measurements of, Position sensitive, Satellite-borne experiment, law, Protons, Nucleon, Nuclear Experiment, Helium, Calorimeters, Cosmic rays, Experiments, Helium, Spectroscopy
Abstract

New measurements of the energy spectra of cosmic-ray protons and helium nuclei with significantly increased statistics owing to an improvement of the event selection technique and the involvement of all data over the period 2006?????????2013 in the analysis have been made at energies above 0.8 TeV/nucleon with a position-sensitive calorimeter based on data from the PAMELA satellite-borne experiment.

Published
2014

50. Spectra of primary cosmic-ray positrons and electrons in the PAMELA experiment

Author

Yu. T. Yurkin, Roberta Sparvoli, R. Sarkar, A. Bruno, M. Simon, Yu. I. Stozhkov, G. Jerse, C. Pizzolotto, V. Di Felice, N. De Simone, Lorenzo Bonechi, D. Campana, M. Bongi, V. Bonvicini, M. P. De Pascale, Marco Casolino, S. Yu. Krutkov, V. G. Zverev, L. A. Grishantseva, P. Picozza, N. Zampa, P. Spillantini, V. V. Malakhov, S. Bottai, Giuseppe Osteria, F. Cafagna, G. A. Bazilevskaya, E. Mocchiutti, A. A. Leonov, V. Malvezzi, O. Adriani, V. V. Mikhailov, A. V. Karelin, F. Palma, P. Carlson, S. V. Koldashov, Juan Wu, Marco Ricci, Mirko Boezio, A. N. Kvashnin, A. G. Mayorov, L. Marcelli, R. Carbone, S. A. Voronov, Sergey Koldobskiy, Laura Rossetto, G. C. Barbarino, G. Castellini, Andrea Vacchi, C. De Santis, E. A. Bogomolov, Alfonso Monaco, Mark Pearce, S. B. Ricciarini, P. Papini, E. Vannuccini, A. M. Galper, Gianluigi Zampa, L. Consiglio, R. Belotti, G. I. Vasilyev, Nicola Mori, W. Menn, V. V., Mikhailov, O., Adriani, G. A., Bazilevskaya, Barbarino, Giancarlo, R., Belotti, E. A., Bogomolov, M., Boezio, V., Bonvicini, M., Bongi, L., Bonechi, S., Bottai, A., Bruno, A., Vacchi, E., Vannuccini, G. I., Vasilyev, S. A., Voronov, J., Wu, A. M., Galper, L. A., Grishantseva, C., Santi, N., Simone, G., Jerse, V., Felice, G., Zampa, N., Zampa, V. G., Zverev, M., Casolino, D., Campana, P., Carlson, R., Carbone, A. V., Karelin, G., Castellini, F., Cafagna, A. N., Kvashnin, S. V., Koldashov, S. A., Koldobskiy, Consiglio, Lucia, Krutkov, S. Y. u., A. A., Leonov, V. V., Malakhov, A. G., Mayorov, V., Malvezzi, L., Marcelli, W., Menn, E., Mocchiutti, A., Monaco, N., Mori, Osteria, Giuseppe, F., Palma, P., Papini, M. P., Pascale, C., Pizzolotto, P., Picozza, M., Pearce, L., Rossetto, M., Ricci, S., Ricciarini, R., Sarkar, M., Simon, R., Sparvoli, P., Spillantini, Stozhkov, Y. u. I., and Yurkin, Y. u. T.

Subjects
Physics, Range (particle radiation), Spectrometer, PAMELA detector, Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, Cosmic ray, Electron, Spectral line, law.invention, Nuclear physics, Physics and Astronomy (all), Positron, law, Satellite
Abstract

The PAMELA experiment is being conducted aboard the Russian satellite Resurs-DK 1, which was launched into a near-Earth circumpolar orbit on June 15, 2006. The instrument, which includes a magnetic spectrometer and an electromagnetic calorimeter (16X 0), allows us to measure the fluxes of cosmic-ray electrons and positrons over a wide range of energies from ~100 MeV to hundreds of GeV. This work presents the measurement data collected from July 2006 through January 2010 on the spectra of primary cosmic-ray electrons and positrons. At low energies, this spectrum is in good agreement with a diffusion model that includes reacceleration and damping. At high energies, the measured spectrum is harder than the one predicted. © 2013 Allerton Press, Inc.

Published
2013

Catalog

Books, media, physical & digital resources
See catalog results