Search

Your search keyword '"V. G. Zverev"' showing total 104 results
Start Over Author "V. G. Zverev" Topic physics
104 results on '"V. G. Zverev"'

1. 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

2. 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

3. 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

4. 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

5. Force-field parameterization of the galactic cosmic ray spectrum: Validation for Forbush decreases

Author

R. Carbone, Sergey Koldobskiy, G. C. Barbarino, S. Y. Krutkov, V. Formato, A. V. Karelin, S. A. Voronov, G. A. Kovaltsov, N. Zampa, G. A. Bazilevskaya, E. A. Bogomolov, Laura Rossetto, V. Bonvicini, Yu. T. Yurkin, Y. I. Stozhkov, V. G. Zverev, P. Picozza, G. Osteria, P. Spillantini, Nicola Mori, M. Simon, N. De Simone, E. Mocchiutti, L. Marcelli, Alfonso Monaco, A. Vacchi, V. Di Felice, R. Sparvoli, M. Merge, A. Bruno, G. Zampa, Beatrice Panico, Marco Ricci, G. I. Vasilyev, Roberto Bellotti, A. M. Galper, C. De Santis, A. N. Kvashnin, Riccardo Munini, Mark Pearce, S. B. Ricciarini, Per Carlson, V. V. Malakhov, P. Papini, E. Vannuccini, Ilya Usoskin, V. V. Mikhailov, C. De Donato, F. Cafagna, Matteo Martucci, Sergey Koldashov, A. G. Mayorov, G. Castellini, Valentina Scotti, Alexey Leonov, F. Palma, Mirko Boezio, D. Campana, Ritabrata Sarkar, Marco Casolino, O. Adriani, S. Bottai, W. Menn, M. Bongi, C. Pizzolotto, G., Usoskin, G. A., Kovaltsov, 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. 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, C., Pizzolotto, M., Ricci, S. B., Ricciarini, L., Rossetto, 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, V. G., Zverev, Usoskin, I. G., Kovaltsov, G. A., 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., 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., 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
Atmospheric Science, Astrophysics::High Energy Astrophysical Phenomena, Aerospace Engineering, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Cosmic rays, Forbush decrease, Heliosphere, Space and Planetary Science, Physics::Geophysics, Energy spectrum, Settore FIS/01, Physics, Spectrum (functional analysis), Astronomy, Astronomy and Astrophysics, Force field parameterization, Geophysics, Physics::Space Physics, General Earth and Planetary Sciences, Astrophysics::Earth and Planetary Astrophysics, Parametrization
Abstract

A useful parametrization of the energy spectrum of galactic cosmic rays (GCR) near Earth is offered by the so-called force-field model which describes the shape of the entire spectrum with a single parameter, the modulation potential. While the usefulness of the force-field approximation has been confirmed for regular periods of solar modulation, it was not tested explicitly for disturbed periods, when \GCR\ are locally modulated by strong interplanetary transients. Here we use direct measurements of protons and α -particles performed by the \PAMELA\ space-borne instrument during December 2006, including a major Forbush decrease, in order to directly test the validity of the force-field parameterization. We conclude that (1) The force-field parametrization works very well in describing the energy spectra of protons and α -particles directly measured by \PAMELA\ outside the Earths atmosphere; (2) The energy spectrum of \GCR\ can be well parameterized by the force-field model also during a strong Forbush decrease; (3) The estimate of the \GCR\ modulation parameter, obtained using data from the world-wide neutron monitor network, is in good agreement with the spectra directly measured by \PAMELA\ during the studied interval. This result is obtained on the basis of a single event analysis, more events need to be analyzed.

Published
2015

6. 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

7. 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

8. 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

9. Splash and Re-entrant Albedo Fluxes Measured in the PAMELA Experiment

Author

A. V. Karelin, Mark Pearce, S. B. Ricciarini, F. Palma, R. Carbone, Sergey Koldobskiy, G. C. Barbarino, Valerio Formato, A. G. Mayorov, P. Papini, E. Vannuccini, M.A. Mayorova, Alfonso Monaco, V. DiFelice, Alexey Leonov, Roberto Bellotti, O. Adriani, V. Bonvicini, Mirko Boezio, C. DeDonato, C. DeSantis, W. Menn, A. M. Galper, N. Zampa, Ritabrata Sarkar, G. Osteria, M. Merge, A. N. Kvashnin, G. Zampa, Beatrice Panico, M. Simon, Yu. T. Yurkin, Matteo Martucci, N. DeSimone, Nicola Mori, M. Bongi, Marco Ricci, V. V. Malakhov, S. Bottai, A.I. Moiseeva, G. Castellini, Riccardo Munini, G. A. Bazilevskaya, A.A. Kvashnin, C. Pizzolotto, Valentina Scotti, R. Sparvoli, E. Mocchiutti, Yuri Stozhkov, L. Marcelli, A. Vacchi, A. Bruno, Per Carlson, F. Cafagna, V. V. Mikhailov, S. A. Voronov, E. A. Bogomolov, P. Spillantini, Sergey Koldashov, P. Picozza, V. G. Zverev, D. Campana, Marco Casolino, Mayorov, A. G., Moiseeva, A. I., 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., Dedonato, C., Desantis, C., Desimone, N., Difelice, V., Formato, V., Galper, A. M., Karelin, A. V., Koldashov, S. V., Koldobskiy, S., Kvashnin, A. A., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Martucci, M., Mayorova, M. A., 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., Sarkar, R., Scotti, V., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Voronov, S. A., Yurkin, Y. T., Zampa, G., Zampa, N., and Zverev, V. G.

Subjects
Physics, Splash, Calorimeter (particle physics), Spectrometer, Aperture, Settore FIS/04, Detector, Astrophysics, Albedo, Physics and Astronomy(all), splash albedo, Latitude, Physics and Astronomy (all), Earth's magnetic field, PAMELA, Astrophysics::Earth and Planetary Astrophysics, Physics::Atmospheric and Oceanic Physics
Abstract

This work devoted to the description of the method for splash albedo protons identification in the satellite-born experiment PAMELA. In contrast to the reentrant albedo particles, which enter into the main aperture of the instrument, the direct albedo particles enter from the opposite direction, so they pass a few detectors, including calorimeter, before being register by the magnetic spectrometer. The developed method take into account the influence of these detectors on the selection of events and measurements of their characteristics. To test this method the energy spectrum of reentrant albedo protons in various regions of the near-Earth space reconstructed; it is in a good agreement with the classical measurements in the main aperture. Therefore, this method can be useful to obtain a new physical data about fluxes of splash albedo protons in the PAMELA experiment, which, unlike the reentrant albedo, can be study even at high geomagnetic latitudes.

Published
2015
Full Text
View/download PDF

10. 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

11. High-energy gamma-ray studying with GAMMA-400

Author

S. G. Bobkov, Nikolay Topchiev, V. V. Kadilin, Valery Korepanov, A. M. Galper, Igor V. Moskalenko, O.D. Dalkarov, Bohdan Hnatyk, V. G. Zverev, S. I. Suchkov, I. V. Arkhangelskaja, Piergiorgio Picozza, A. E. Egorov, V. V. Mikhailov, Roberta Sparvoli, Alexander Moiseev, Y. T. Yurkin, V. Bonvicini, Y. I. Stozhkov, O. V. Serdin, A. V. Bakaldin, Piero Spillantini, P. P. Naumov, Yuriy Gusakov, A.I. Arkhangelskiy, Alexey Leonov, M. F. Runtso, Anton Taraskin, and M. D. Kheymits

Subjects
Settore FIS/01, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Astrophysics::High Energy Astrophysical Phenomena, Galactic Center, Dark matter, Gamma ray, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Astronomy, Cosmic ray, Galactic plane, Galaxy, law.invention, Telescope, law, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Instrumentation and Methods for Astrophysics (astro-ph.IM), Fermi Gamma-ray Space Telescope
Abstract

Extraterrestrial gamma-ray astronomy is now a source of 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 the angular and energy resolutions. Such a new generation telescope will be GAMMA-400. GAMMA-400, currently developing gamma-ray telescope, together with X-ray telescope will precisely and detailed observe in the energy range of ~20 MeV to ~1000 GeV and 3-30 keV the Galactic plane, especially, 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{\deg} at E{\gamma} = 100 GeV) and energy (~1% at E{\gamma} = 100 GeV) resolutions better than the Fermi-LAT, as well as ground gamma-ray telescopes, by a factor of 5-10. GAMMA-400 will permit to resolve gamma rays from annihilation or decay of 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., Comment: 8 pages, 9 figures, ICRC2017

Published
2017

12. 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

13. 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

14. 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

15. Measurement of galactic cosmic-ray deuteron spectrum in the PAMELA experiment

Author

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

Subjects
Physics, Physics and Astronomy (all), Deuterium, Astrophysics::High Energy Astrophysical Phenomena, Physics::Space Physics, Hadron, General Physics and Astronomy, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Spectrum (topology)
Abstract

This work presents the results of measuring the deuteron spectrum of Galactic cosmic rays (GCRs) with the PAMELA experiment. The PAMELA is an international experiment. Its main objectives are to se ...

Published
2013

16. 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

17. PAMELA'S MEASUREMENT OF GEOMAGNETIC CUTOFF VARIATIONS DURING SOLAR ENERGETIC PARTICLE EVENTS

Author

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

Subjects
Physics, Nuclear physics, Earth's magnetic field, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Physics::Space Physics, Measure (physics), Particle, Cutoff, Satellite, Nuclear Experiment, Physics::Atmospheric and Oceanic Physics
Abstract

Data from the PAMELA satellite experiment were used to measure the geomagnetic cutoff for high-energy ( 80 MeV) protons during the solar particle events on 2006 December 13 and 14. The variations o ...

Published
2016

18. 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

19. The May 17, 2012 solar event: Back-tracing analysis and flux reconstruction with PAMELA

Author

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

Subjects
Physics, Settore FIS/01, History, Solar energetic particles, Spacecraft, business.industry, Magnetosphere, Direction of arrival, Astrophysics, Tracing, Solar physics, 01 natural sciences, Computer Science Applications, Education, Computational physics, Physics and Astronomy (all), 0103 physical sciences, Physics::Space Physics, Neutron, Interplanetary magnetic field, 010306 general physics, business, Angular distribution, Cosmology, Earth (planet), Low power electronics, Orbits, Solar system, 010303 astronomy & astrophysics
Abstract

The PAMELA space experiment is providing first direct observations of Solar Energetic Particles (SEPs) with energies from about 80 MeV to several GeV in near-Earth orbit, bridging the low energy measurements by other spacecrafts and the Ground Level Enhancement (GLE) data by the worldwide network of neutron monitors. Its unique observational capabilities include the possibility of measuring the flux angular distribution and thus investigating possible anisotropies associated to SEP events. The analysis is supported by an accurate back-tracing simulation based on a realistic description of the Earth's magnetosphere, which is exploited to estimate the SEP energy spectra as a function of the asymptotic direction of arrival with respect to the Interplanetary Magnetic Field (IMF). In this work we report the results for the May 17, 2012 event.

Published
2016

20. 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

21. 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

22. Secondary electron and positron fluxes in the near-Earth space observed in the ARINA and PAMELA experiments

Author

G. C. Barbarino, Roberta Sparvoli, N. Zampa, L. A. Grishantseva, D. Fedele, M. Bongi, N. De Simone, V. Bonvicini, F. Cafagna, M. Simon, Yu. I. Stozhkov, A. A. Leonov, E. Mocchiutti, M. P. De Pascale, A. M. Galper, S. Yu. Krutkov, G. De Rosa, A. N. Kvashnin, G. V. Vasiliev, V. G. Zverev, Lorenzo Bonechi, O. Adriani, Petter Hofverberg, V. V. Malakhov, V. Malvezzi, E. Taddei, V. M. Boezio, Silvio Orsi, W. Menn, S. V. Koldashov, Yu. T. Yurkin, Marco Ricci, V. V. Mikhailov, P. Spillantini, Giuseppe Osteria, P. Carlson, Marco Casolino, A. Vacchi, A. Bruno, M. A. Bzheumikhova, T. D. Campana, Mark Pearce, S. B. Ricciarini, S. Bottai, P. Papini, E. Vannuccini, T. P. Picozza, V. Di Felice, S. A. Voronov, G. Castellini, L. Marcelli, E. A. Bogomolov, G. Zampa, T. R. Bellotti, G. A. Bazilevskaya, O., Adriani, G. A., Bazilevskaya, Barbarino, Giancarlo, T. R., Bellotti, M. A., Bzheumikhova, E. A., Bogomolov, V. M., Boezio, V., Bonvicini, M., Bongi, L., Bonechi, S., Bottai, A., Bruno, A., Vacchi, E., Vannuccini, G. V., Vasiliev, S. A., Voronov, A. M., Galper, L. A., Grishantseva, G., Zampa, N., Zampa, V. G., Zverev, M., Casolino, T. D., Campana, P., Carlson, G., Castellini, F., Cafagna, A. N., Kvashnin, S. V., Koldashov, Krutkov, S. Y. u., A. A., Leonov, V. V., Malakhov, V., Malvezzi, L., Marcelli, W., Menn, V. V., Mikhailov, E., Mocchiutti, S., Orsi, G., Osteria, P., Papini, M. P., Pascale, T. P., Picozza, M., Pearce, DE ROSA, Gianfranca, M., Ricci, S. B., Ricciarini, M., Simon, N., Simone, R., Sparvoli, P., Spillantini, Stozhkov, Y. u. I., E., Taddei, V., Felice, D., Fedele, P., Hofverberg, and Yurkin, Y. u. T.

Subjects
Energy ranges, Elliptic orbit, Astrophysics::High Energy Astrophysical Phenomena, Near-earth spaces, General Physics and Astronomy, Electrons, Geomagnetic equators, Astrophysics, Electron, Secondary electrons, Secondary emission, Settore FIS/04 - Fisica Nucleare e Subnucleare, Elliptical orbits, Nuclear physics, Physics and Astronomy (all), Positrons, Altitude, Positron, Magnetic anomaly, Physics, Range (particle radiation), Geomagnetism, Earth (planet), Physics::Space Physics, Satellite
Abstract

Secondary electron and positron fluxes in the energy range from 3 MeV to 7 GeV were measured with the ARINA and PAMELA spectrometers onboard the Resurs-DK satellite launched on June 15, 2006 into an elliptical orbit with an inclination of 70.4° and an altitude of 350-600 km. It is shown that positrons dominate over electrons by a factor of up to 4-5 in the geomagnetic equator region (L 0.25).

Published
2009

23. The possibilities of simultaneous detection of gamma rays, cosmic-ray electrons and positrons on the GAMMA-400 space observatory

Author

V. Bonvicini, A. M. Galper, O. F. Prilutskii, N. Zampa, Mirko Boezio, A. L. Menshenin, M. I. Fradkin, E. P. Mazets, V. G. Zverev, V. G. Rodin, V. A. Kachanov, N. P. Topchiev, Piero Spillantini, V. A. Kaplin, I V Arkhangelskaya, B. A. Dolgoshein, S. I. Suchkov, A. Vacchi, Yu. T. Yurkin, R. L. Aptekar, V. Ya. Gecha, M. F. Runtso, P. Picozza, and M. O. Farber

Subjects
Physics, Range (particle radiation), Physics and Astronomy (miscellaneous), Proton, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Gamma ray, Astronomy, Astronomy and Astrophysics, Cosmic ray, Astrophysics, Electron, Settore FIS/04 - Fisica Nucleare e Subnucleare, Positron, Angular resolution
Abstract

The GAMMA-400 space observatory will pro- vide precise measurements of gamma rays, electrons, and positrons in the energy range 0.1-3000 GeV. The good an- gular and energy resolutions, as well as identification capa- bilities (angular resolution 0.01 , energy resolution 1%, and proton rejection factor 10 6 ) will allow us to study the main galactic and extragalactic sources, diffuse gamma-ray background, gamma-ray bursts, and to measure electron and positron fluxes. The peculiar characteristics of the experi- ment is simultaneous detection of gamma rays and cosmic- ray electrons and positrons, which can be connected with an- nihilation or decay of dark matter particles.

Published
2011

24. 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

25. Cosmic ray measurements with Pamela experiment

Author

P. Spillantini, Roberta Sparvoli, G. I. Vasilyev, V. Bonvicini, E. Mocchiutti, O. Maksumov, Gianluigi Zampa, Y. T. Yurkin, A. M. Galper, Per Carlson, F. Cafagna, G. De Rosa, Petter Hofverberg, L. Marcelli, R. Carbone, S. Bottai, A. Bruno, G. C. Barbarino, N. N. Nikonov, Marco Ricci, Giuseppe Osteria, V. V. Mikhailov, Mark Pearce, S. B. Ricciarini, N. De Simone, Andrea Vacchi, G. Castellini, Yuri Stozhkov, P. Papini, N. Zampa, E. Vannuccini, G. A. Bazilevskaya, S. A. Voronov, Alexey Leonov, V. G. Zverev, E. A. Bogomolov, E. Taddei, O. Adriani, V. Di Felice, W. Menn, D. Campana, L. A. Grishantseva, D. Fedele, Mirko Boezio, M. Bongi, A. N. Kvashnin, Marco Casolino, M. Minori, Sergey Koldashov, Lorenzo Bonechi, P. Picozza, M. Simon, M. P. De Pascale, S. Yu. Krutkov, Barbarino, Giancarlo, Russo, Stefano, DE ROSA, Gianfranca, D., Campana, and G., Osteria

Subjects
Physics, Nuclear and High Energy Physics, PAMELA detector, Astrophysics::High Energy Astrophysical Phenomena, Astronomy, Cosmic ray, Astrophysics, Electron, Atomic and Molecular Physics, and Optics, Settore FIS/04 - Fisica Nucleare e Subnucleare, law.invention, Positron, Antiproton, law, Atomic and Molecular Physics, Antimatter, Solar particle event, Satellite, and Optics, Nuclear Experiment
Abstract

PAMELA is a satellite borne experiment designed to study with great accuracy cosmic rays of galactic, solar, and trapped nature hi a wide energy range (protons: 80 MeV-700 GeV, electrons 50 MeV-400 GeV). Main objective is the study of the antimatter component: antiprotons (80 MeV-190 GeV), positrons (50 MeV-270 GeV) and search for antinuclei with a precision of the order of 10(-8)). The experiment, housed on board the Russian Resurs-DK1 satellite, was launched on June, 15(th) 2006 in a 350 X 600 km orbit with an inclination of 70 degrees. In this work we describe the scientific objectives awl the performance of PAMELA in its first two years of operation. Data oil protons of trapped, secondary and galactic nature - as well as measurements of the December 13(th) 2006 Solar Particle Event - are also provided.

Published
2009

26. Magnetospheric and solar physics observations with the PAMELA experiment

Author

S. Orsi, M. Ambriola, Roberta Sparvoli, A. Morselli, E. Taddei, Yu. I. Stozhkov, S. Russo, Mirko Boezio, D. Campana, A. N. Kvashnin, O. Maksumov, S. V. Koldashov, Marco Ricci, V. Bonvicini, O. Adriani, W. Menn, Marco Casolino, Petter Hofverberg, Gianluigi Zampa, Andrea Vacchi, A. Bruno, M. Minori, N. De Simone, M. Simon, N. N. Nikonov, Giuseppe Osteria, E. Mocchiutti, S. Misin, D. Fedele, Lorenzo Bonechi, F. Cafagna, L. Marcelli, M. Bongi, V. Malvezzi, A. M. Galper, G. De Rosa, V. G. Zverev, M. F. Runtso, Piero Spillantini, S. A. Voronov, E. A. Bogomolov, J. Lundquist, V. V. Mikhailov, G. I. Vasilyev, G. Castellini, N. Zampa, Mark Pearce, S. B. Ricciarini, G. C. Barbarino, P. Picozza, C. De Marzo, P. Papini, E. Vannuccini, G. A. Bazilevskaja, V. Di Felice, Y. T. Yurkin, A. Basili, M. P. De Pascale, S. Yu. Krutkov, Per Carlson, Barbarino, Giancarlo, Russo, Stefano, D., Campana, G., Osteria, and DE ROSA, Gianfranca

Subjects
Antimatter, Nuclear and High Energy Physics, Satellite-borne experiment, Satellites, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Solar Particle Events, Cosmic ray, Astrophysics, Settore FIS/04 - Fisica Nucleare e Subnucleare, law.invention, Nuclear physics, Positrons, law, Cosmic rays, Magnetosphere, Spectrometers, Electromagnetic imaging, Magnetic spectrometer, Positron spectra, Solar physics, Time of Flight system, Neutron detection, Nuclear Experiment, Instrumentation, Physics, Magnetospheres, Calorimeter (particle physics), PAMELA detector, Spectrometer, Astronomy, Antiproton
Abstract

PAMELA is a satellite-borne experiment designed to make long duration measurements of the cosmic radiation in Low Earth Orbit. It is devoted to the detection of the cosmic-ray spectra in the 100 MeV 300 GeV range with primary scientific goal the measurement of antiproton and positron spectra over the largest energy range ever achieved. Other tasks include the search for antinuclei with unprecedented sensitivity and the measurement of the light nuclear component of cosmic rays. In addition, PAMELA can investigate phenomena connected with solar and Earth physics. The apparatus consists of: a Time of Flight system, a magnetic spectrometer, an electromagnetic imaging calorimeter, a shower tail catcher scintillator, a neutron detector and an anticoincidence system. In this work we present some measurements of galactic, secondary and trapped particles performed in the first months of operation.

Published
2008

27. 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

28. The PAMELA experiment: light-nuclei selection with stand-alone detectors

Author

V. Malvezzi, C. Pizzolotto, P. Spillantini, E. Mocchiutti, C. De Santis, S. Y. Krutkov, V. Di Felice, Matteo Martucci, Ugo Giaccari, Juan Wu, N. Zampa, G. A. Bazilevskaya, V. Bonvicini, P. Picozza, Y. I. Stozhkov, S. V. Koldashov, A. G. Mayorov, Mark Pearce, S. B. Ricciarini, Alfonso Monaco, G. Castellini, G. I. Vasilyev, Lorenzo Bonechi, V. V. Malakhov, M. Simon, A. A. Leonov, P. Papini, E. Vannuccini, Riccardo Munini, L. A. Grishantseva, O. Adriani, Ritabrata Sarkar, W. Menn, M. P. De Pascale, Nicola Mori, Giovanna Jerse, A. Bianco, Maria Teresa Ricci, S. A. Voronov, Valerio Formato, A. M. Galper, D. Campana, M. Bongi, N. N. Nikonov, F. Cafagna, N. De Simone, Marco Casolino, E. A. Bogomolov, V. V. Mikhailov, Laura Rossetto, Y. T. Yurkin, S. V. Borisov, A. V. Karelin, Mirko Boezio, R. Carbone, G. C. Barbarino, G. Osteria, Per Carlson, Roberto Bellotti, A. N. Kvashnin, F. Palma, Andrea Vacchi, L. Marcelli, A. Bruno, V. G. Zverev, S. Bottai, Roberta Sparvoli, M. D. Kheymits, G. Zampa, A D Erlykin, R P Kokoulin, A S Lidvansky, L I Meroshnichenko, M I Panasyuk, A D Panov A W Wolfendale, R., Carbone, O., Adriani, G. C., Barbarino, G. A., Bazilevskaya, R., Bellotti, A., Bianco, M., Boezio, E. A., Bogomolov, L., Bonechi, M., Bongi, V., Bonvicini, S., Borisov, S., Bottai, A., Bruno, F., Cafagna, D., Campana, P., Carlson, M., Casolino, G., Castellini, M. P., De Pascale, C., De Santi, N., De Simone, V., Di Felice, Formato, Valerio, A. M., Galper, U., Giaccari, L., Grishantseva, Jerse, Giovanna, A. V., Karelin, M. D., Kheymit, S. V., Koldashov, S. Y., Krutkov, A. N., Kvashnin, A., Leonov, V., Malakhov, V., Malvezzi, L., Marcelli, M., Martucci, A. G., Mayorov, W., Menn, V. V., Mikhailov, Mocchiutti, Emiliano, A., Monaco, N., Mori, Munini, Riccardo, N., Nikonov, G., Osteria, F., Palma, P., Papini, M., Pearce, P., Picozza, C., Pizzolotto, M., Ricci, S. B., Ricciarini, L., Rossetto, R., Sarkar, M., Simon, R., Sparvoli, P., Spillantini, Y. I., Stozhkov, Vacchi, Andrea, E., Vannuccini, G., Vasilyev, S. A., Voronov, J., Wu, Y. T., Yurkin, G., Zampa, N., Zampa, V. G., Zverev, O. c., Adriani, Barbarino, Giancarlo, G., Bazilevskaya, R. h., Bellotti, A. i., Bianco, E., Bogomolov, S. l., M, A. h., Bruno, M. l., De, C. D., Santi, N. D., Simone, V. D., Felice, V. i., Formato, A., Galper, G. i., Jerse, A., Karelin, M., Kheymit, S., Koldashov, S., Krutkov, A., Kvashnin, M. p., Martucci, A., Mayorov, V., Mikhailov, E., Mocchiutti, A. h., Monaco, R. i. n, N. k. l, Osteria, Giuseppe, F. l., Palma, P. l., Picozza, C. r., S, S., Ricciarini, R. l., Sparvoli, P. c., Spillantini, Y., Stozhkov, A., Vacchi, S., Voronov, Y., Yurkin, and V., Zverev

Subjects
Physics, History, Analysis strategies, Dark matter, Energy ranges, Light nuclei, Magnetic spectrometers, Measurements of, Precise measurements, Propagation models, Space experiments, Time-of-flight system, COSMIC cancer database, Spectrometer, PAMELA detector, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Galaxy, Cosmic Rays, Settore FIS/04 - Fisica Nucleare e Subnucleare, Computer Science Applications, Education, law.invention, Nuclear physics, Cosmic ray measurement, Positron, Antiproton, law, Nuclear Experiment, Cosmic rays, Detectors, Experiments, Galaxies, Isotope
Abstract

Launched on the 15th of June 2006, the space experiment PAMELA is providing data showing interesting features in cosmic rays that might change our basic vision of the mechanisms of production, acceleration and propagation of cosmic rays in the galaxy. In addition, PAMELA measurements of cosmic antiproton and positron fluxes are setting strong constraints to the nature of Dark Matter. PAMELA is also testing cosmic rays acceleration and propagation models through precise measurements of light nuclei and their isotopes. The determination of fluxes and secondary-to-primary ratios is possible for nuclei up to Oxygen in the energy range 200MeV/n – 150 GeV/n. To investigate this important item, PAMELA can use measurements from three main detectors: the magnetic spectrometer, the calorimeter and the Time-of-Flight system. Analysis strategy and performance for nuclei studies using the detectors in stand-alone configuration will be discussed in this work.

Published
2013

29. Measurement of the flux of primary cosmic ray antiprotons with energies of 60 MeV to 350 GeV in the PAMELA experiment

Author

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

Subjects
Physics, Antiparticle, Annihilation, Solid-state physics, PAMELA detector, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Galaxy, Settore FIS/04 - Fisica Nucleare e Subnucleare, law.invention, Nuclear physics, Antiproton, law, High Energy Physics::Experiment, Nuclear Experiment
Abstract

It is interesting to measure the antiproton galactic component in cosmic rays in order to study the mechanisms by which particles and antiparticles are generated and propagate in the Galaxy and to search for new sources of, e. g., annihilation or decay of dark matter hypothetical particles. The antiproton spectrum and the ratio of the fluxes of primary cosmic ray antiprotons to protons with energies of 60 MeV to 350 GeV found from the data obtained from June 2006 to January 2010 in the PAMELA experiment are presented. The usage of the advanced data processing method based on the data classification mathematical model made it possible to increase statistics and analyze the region of higher energies than in the earlier works. © 2012 Pleiades Publishing, Ltd.

Published
2013

30. Anisotropy studies in the cosmic ray proton flux with the PAMELA experiment

Author

S. V. Borisov, P. Spillantini, S. V. Koldashov, Roberta Sparvoli, V. G. Zverev, M. P. De Pascale, Mark Pearce, S. B. Ricciarini, V. V. Mikhailov, A. Bianco, Riccardo Munini, L. A. Grishantseva, Per Carlson, S. Y. Krutkov, Mirko Boezio, M. Bongi, V. Di Felice, S. A. Voronov, P. Papini, E. Vannuccini, Lorenzo Bonechi, D. Campana, V. Malvezzi, E. Mocchiutti, Valerio Formato, Giovanna Jerse, C. De Santis, M. Simon, F. Cafagna, A. A. Leonov, P. Picozza, Marco Casolino, Alfonso Monaco, S. Bottai, L. Marcelli, V. V. Malakhov, V. Bonvicini, E. A. Bogomolov, Y. I. Stozhkov, R. Carbone, A. Bruno, F. Palma, C. Pizzolotto, N. De Simone, Laura Rossetto, Maria Teresa Ricci, A. M. Galper, G. C. Barbarino, N. N. Nikonov, O. Adriani, Ritabrata Sarkar, Ugo Giaccari, G. Zampa, W. Menn, N. Zampa, G. A. Bazilevskaya, Andrea Vacchi, G. Castellini, M. D. Kheymits, Nicola Mori, G. I. Vasilyev, Y. T. Yurkin, Roberto Bellotti, A. N. Kvashnin, A. V. Karelin, G. Osteria, A. G. Mayorov, Matteo Martucci, Juan Wu, U., Giaccari, O., Adriani, Barbarino, Giancarlo, G. A., Bazilevskaya, R., Bellotti, A., Bianco, M., Boezio, E. A., Bogomolov, L., Bonechi, M., Bongi, V., Bonvicini, S., Borisov, S., Bottai, A., Bruno, F., Cafagna, D., Campana, R., Carbone, P., Carlson, M., Casolino, G., Castellini, M. P., De Pascale, C., De Santi, N., De Simone, V., Di Felice, V., Formato, A. M., Galper, L., Grishantseva, G., Jerse, A. V., Karelin, M. D., Kheymit, S. V., Koldashov, S. Y., Krutkov, A. N., Kvashnin, A., Leonov, V., Malakhov, V., Malvezzi, L., Marcelli, M., Martucci, A. G., Mayorov, W., Menn, V. V., Mikhailov, E., Mocchiutti, A., Monaco, N., Mori, R., Munini, N., Nikonov, Osteria, Giuseppe, F., Palma, P., Papini, M., Pearce, P., Picozza, C., Pizzolotto, M., Ricci, S. B., Ricciarini, L., Rossetto, R., Sarkar, M., Simon, R., Sparvoli, P., Spillantini, Y. I., Stozhkov, A., Vacchi, E., Vannuccini, G., Vasilyev, S. A., Voronov, J., Wu, Y. T., Yurkin, G., Zampa, N., Zampa, V. G., Zverev, Ivan De Mitri, Nicola Giglietto, Giovanni Marsella, Antonio Surdo, G. C., Barbarino, Formato, Valerio, Jerse, Giovanna, Mocchiutti, Emiliano, Munini, Riccardo, G., Osteria, and Vacchi, Andrea

Subjects
Physics, Nuclear and High Energy Physics, Rigidity (electromagnetism), Proton, Astrophysics::High Energy Astrophysical Phenomena, Isotropy, Cosmic ray, Astrophysics, Proton flux, Anisotropy, Atomic and Molecular Physics, and Optics, Cosmic Rays
Abstract

Using data taken by the Pamela experiment during 5 years of operation we studied the anisotropy in the arrival direction distribution of cosmic ray protons with rigidity above 40 GV. In this survey we used two different and independent techniques to investigate the large and medium anisotropy patterns in the proton spectrum. With both methods the observed distribution of arrival directions is consistent with the isotropic expectation and no significant evidence of strong anisotropies has been observed.

Published
2013

31. Antiprotons of galactic cosmic radiation in the PAMELA experiment

Author

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

Subjects
Physics, Calorimeter (particle physics), PAMELA detector, Physics::Instrumentation and Detectors, Hadron, Dark matter, General Physics and Astronomy, Cosmic ray, Electron, Astrophysics, Flux ratio, law.invention, Nuclear physics, Physics and Astronomy (all), Antiproton, law, High Energy Physics::Experiment
Abstract

A method for antiproton selection against a background of electrons, based on a mathematical model of data classification using variations in interparticle interaction in a calorimeter, and a metho ...

Published
2013

32. Status of the GAMMA-400 project

Author

S. I. Suchkov, Andrea Vacchi, Francesco Longo, Roberta Sparvoli, Piero Spillantini, Yu. T. Yurkin, M. F. Runtso, P. Yu. Naumov, N. Zampa, O. Adriani, Vladimir Kaplin, E. Vannuccini, M. D. Kheymits, V. G. Zverev, A. A. Leonov, Yu. V. Gusakov, R. L. Aptekar, E. Mocchiutti, A. A. Moiseev, P. Papini, Igor V. Moskalenko, P S Marrocchesi, K. A. Boyarchuk, I. V. Arkhangelskaja, V. A. Kachanov, V. G. Rodin, P. Picozza, Nicola Mori, E. P. Mazets, A. M. Galper, V. Bonvicini, M. I. Fradkin, Marco Tavani, Mirko Boezio, N. P. Topchiev, Paolo Maestro, M. O. Farber, A.I. Arkhangelskiy, A. M., Galper, O., Adriani, R. L., Aptekar, I. V., Arkhangelskaja, A. I., Arkhangelskiy, M., Boezio, V., Bonvicini, K. A., Boyarchuk, Y. V., Gusakov, M. O., Farber, M. I., Fradkin, V. A., Kachanov, V. A., Kaplin, M. D., Kheymit, A. A., Leonov, Longo, Francesco, P., Maestro, P., Marrocchesi, E. P., Mazet, Mocchiutti, Emiliano, A. A., Moiseev, N., Mori, I., Moskalenko, P. Y., Naumov, P., Papini, P., Picozza, V. G., Rodin, M. F., Runtso, R., Sparvoli, P., Spillantini, S. I., Suchkov, M., Tavani, N. P., Topchiev, Vacchi, Andrea, E., Vannuccini, Y. T., Yurkin, N., Zampa, and V. G., Zverev

Subjects
Atmospheric Science, Proton, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, FOS: Physical sciences, Aerospace Engineering, Electrons, Cosmic ray, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Settore FIS/04 - Fisica Nucleare e Subnucleare, law.invention, Telescope, Positrons, Positron, law, Angular resolution, gamma rays: detectors, Nuclear Experiment, Cosmic rays, Instrumentation and Methods for Astrophysics (astro-ph.IM), Astrophysics::Galaxy Astrophysics, Physics, cosmic rays: detectors, Gamma rays, Gamma ray, Astronomy, Astronomy and Astrophysics, Nuclei, detector [cosmic rays], 85-05, Geophysics, Space and Planetary Science, General Earth and Planetary Sciences, detectors [gamma rays], Gamma-ray burst, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The preliminary design of the new space gamma-ray telescope GAMMA-400 for the energy range 100 MeV - 3 TeV is presented. The angular resolution of the instrument, 1-2{\deg} at E{\gamma} ~100 MeV and ~0.01^{\circ} at E{\gamma} > 100 GeV, its energy resolution ~1% at E{\gamma} > 100 GeV, and the proton rejection factor ~10E6 are optimized to address a broad range of science topics, such as search for signatures of dark matter, studies of Galactic and extragalactic gamma-ray sources, Galactic and extragalactic diffuse emission, gamma-ray bursts, as well as high-precision measurements of spectra of cosmic-ray electrons, positrons, and nuclei., Comment: 6 pages, 1 figure, 1 table, submitted to Advances in Space Research

Published
2013

33. Search for cosmic ray electron-positron anisotropies with the Pamela data

Author

Riccardo Munini, S. Y. Krutkov, A. V. Karelin, G. Osteria, D. Campana, V. Malvezzi, Marco Casolino, A. Bianco, Alfonso Monaco, A. M. Galper, V. G. Zverev, M. P. De Pascale, Mark Pearce, S. B. Ricciarini, S. V. Koldashov, P. Picozza, P. Papini, E. Vannuccini, Roberta Sparvoli, L. Marcelli, A. Bruno, Y. T. Yurkin, Roberto Bellotti, A. N. Kvashnin, Maria Teresa Ricci, P. Spillantini, V. Di Felice, F. Cafagna, V. Bonvicini, Y. I. Stozhkov, Matteo Martucci, Lorenzo Bonechi, Juan Wu, M. Simon, A. A. Leonov, F. Palma, E. Mocchiutti, V. V. Malakhov, Ugo Giaccari, C. De Santis, S. Bottai, M. D. Kheymits, N. Zampa, C. Pizzolotto, G. A. Bazilevskaya, V. V. Mikhailov, N. N. Nikonov, Andrea Vacchi, Mirko Boezio, Giovanna Jerse, A. G. Mayorov, M. Bongi, R. Carbone, G. C. Barbarino, G. Zampa, L. A. Grishantseva, O. Adriani, W. Menn, G. I. Vasilyev, Nicola Mori, S. V. Borisov, S. A. Voronov, E. A. Bogomolov, Laura Rossetto, Ritabrata Sarkar, Valerio Formato, G. Castellini, Per Carlson, N. De Simone, D., Campana, U., Giaccari, O. c., Adriani, Barbarino, Giancarlo, G., Bazilevskaya, R. g., Bellotti, A. i., Bianco, M., Boezio, E., Bogomolov, L., Bonechi, M., Bongi, V., Bonvicini, S. l., M, S., Bottai, A. g., Bruno, F., Cafagna, R., Carbone, P., Carlson, M., Casolino, G., Castellini, M. l., De, C. D., Santi, N. D., Simone, V. D., Felice, V. i., Formato, A., Galper, L., Grishantseva, G. i., Jerse, A., Karelin, M., Kheymit, S., Koldashov, S., Krutkov, A., Kvashnin, A., Leonov, V., Malakhov, V., Malvezzi, L., Marcelli, M. p., Martucci, A., Mayorov, W., Menn, V., Mikhailov, E., Mocchiutti, A. g., Monaco, N., Mori, R. i. n, N. k. l, Osteria, Giuseppe, F. l., Palma, P., Papini, M., Pearce, P. l., Picozza, C. r., S, M., Ricci, S., Ricciarini, L., Rossetto, R., Sarkar, M., Simon, R. l., Sparvoli, P. c., Spillantini, Y., Stozhkov, A., Vacchi, E., Vannuccini, G., Vasilyev, S., Voronov, J., Wu, Y., Yurkin, G., Zampa, N., Zampa, V., Zverev, A D Erlykin, R P Kokoulin, A S Lidvansky, L I Meroshnichenko, M I Panasyuk, A D Panov and A W Wolfendale, O., Adriani, G. C., Barbarino, G. A., Bazilevskaya, R., Bellotti, A., Bianco, E. A., Bogomolov, S., Borisov, A., Bruno, M. P., De Pascale, C., De Santi, N., De Simone, V., Di Felice, Formato, Valerio, A. M., Galper, Jerse, Giovanna, A. V., Karelin, M. D., Kheymit, S. V., Koldashov, S. Y., Krutkov, A. N., Kvashnin, M., Martucci, A. G., Mayorov, V. V., Mikhailov, Mocchiutti, Emiliano, A., Monaco, Munini, Riccardo, N., Nikonov, G., Osteria, F., Palma, P., Picozza, C., Pizzolotto, S. B., Ricciarini, R., Sparvoli, P., Spillantini, Y. I., Stozhkov, Vacchi, Andrea, S. A., Voronov, Y. T., Yurkin, and V. G., Zverev

Subjects
Physics, History, Angular distribution, Anisotropy, Positron, PAMELA detector, Astrophysics::High Energy Astrophysical Phenomena, Isotropy, Flux, Cosmic ray, Electron, Astrophysics, Cosmic Rays, Settore FIS/04 - Fisica Nucleare e Subnucleare, Computer Science Applications, Education, law.invention, Angular scale, Arrival direction, Cosmic ray electrons, Directional Analysis, Strong anisotropy, Nuclear physics, Positron, law, Anisotropy, Directional analysis
Abstract

Using data taken by the Pamela experiment during 5 years of operation we studied the anisotropy in the arrival direction of cosmic ray electrons and positrons with energy above 40 GeV. We report on a study of anisotropy in the e�� flux at different angular scales extending from 30��up to 90��, furthermore a directional analysis has been performed around the Sun direction. The observed distribution of arrival directions is consistent with the isotropic expectation at any angular scale used in this study and no significant evidence of strong anisotropies has been observed, also the analysis around the Sun direction did not show any significant excess.

Published
2013

34. North-south asymmetry for high-energy cosmic-ray electrons measured with the PAMELA experiment

Author

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

Subjects
Physics, High energy, Astrophysics::High Energy Astrophysical Phenomena, media_common.quotation_subject, General Physics and Astronomy, Elementary particle, Cosmic ray, Electron, Threshold energy, Asymmetry, Settore FIS/04 - Fisica Nucleare e Subnucleare, Nuclear physics, Physics and Astronomy (all), Measuring instrument, High Energy Physics::Experiment, Lepton, media_common
Abstract

The north-south asymmetry for cosmic-ray particles was measured with one instrument of the PAMELA satellite-borne experiment in the period June 2006-May 2009. The analysis has been performed by two independent methods: by comparing the count rates in regions with identical geomagnetic conditions and by comparing the experimental distribution of particle directions with the simulated distribution that would be in the case of an isotropic particle flux. The dependences of the asymmetry on energy release in the PAMELA calorimeter and on time have been constructed. The asymmetry (N n - N s )/(N n + N s ) is 0.06 ± 0.004 at the threshold energy release in the calorimeter and gradually decreases with increasing energy release. The observed effect is shown to be produced by electrons in the energy range 10-100 GeV. © 2013 Pleiades Publishing, Ltd

Published
2013

35. The GAMMA-400 Space Experiment: Gammas, Electrons and Nuclei Measurements

Author

P. Spillantini, N. Zampa, Ritabrata Sarkar, K. A. Boyarchuk, Igor V. Moskalenko, Ps Marrocchesi, A. A. Leonov, I. V. Arkhangelskaja, Nicola Mori, Andrea Vacchi, I. A. Mereminskiy, V. Bonvicini, A. A. Moiseev, Francesco Longo, V. G. Rodin, R. L. Aptekar, Roberta Sparvoli, P. Picozza, E. P. Mazets, P. Papini, Yu. V. Gusakov, E. Vannuccini, M. F. Runtso, Yu. T. Yurkin, O. Adriani, V. A. Kachanov, V. N. Zirakashvili, E. Mocchiutti, P. Cumani, V. G. Zverev, R. Carbone, A.I. Arkhangelskiy, V. V. Mikhailov, M. D. Kheymits, S. I. Suchkov, Mirko Boezio, N. P. Topchiev, Paolo Maestro, A. M. Galper, M. I. Fradkin, Marco Tavani, P. Yu. Naumov, Vladimir Kaplin, Mocchiutti, Emiliano, A. M., Galper, O., Adriani, R. L., Aptekar, I. V., Arkhangelskaja, A. I., Arkhangelskiy, M., Boezio, V., Bonvicini, K. A., Boyarchuk, R., Carbone, Cumani, Paolo, M. I., Fradkin, Y. V., Gusakov, V. A., Kaplin, V. A., Kachanov, M. D., Kheymit, A. A., Leonov, Longo, Francesco, E. P., Mazet, P., Maestro, P., Marrocchesi, I. A., Mereminskiy, V. V., Mikhailov, A. A., Moiseev, N., Mori, I. V., Moskalenko, P. Y., Naumov, P., Papini, P., Picozza, V. G., Rodin, M. F., Runtso, R., Sarkar, R., Sparvoli, P., Spillantini, S. I., Suchkov, M., Tavani, N. P., Topchiev, Vacchi, Andrea, E., Vannuccini, Y. T., Yurkin, N., Zampa, V. G., Zverev, and V. N., Zirakashvili

Subjects
Space experiments, Nuclear and High Energy Physics, Proton, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Cosmic rays, Cosmic rays acceleration, Gamma-ray telescope, Atomic and Molecular Physics, and Optics, Cosmic ray, Astrophysics, Electron, cosmic rays, cosmic rays: detectors, gamma rays: detectors, Atomic and Molecular Physics, Angular resolution, Nuclear Experiment, cosmic ray, Physics, Range (particle radiation), Calorimeter (particle physics), detector [cosmic rays], and Optics, detectors [gamma rays], Fermi Gamma-ray Space Telescope
Abstract

The present design of the new space gamma-ray telescope GAMMA-400 for the energy range 50 MeV–3 TeV is presented. The proposed instrument has an angular resolution of 1–2 degrees at E(gamma)~100 MeV and ∼0.01 degrees at E(gamma)>100 GeV and an energy resolution ∼1% at E(gamma)>100 GeV. By means of a deep segmented calorimeter high energy electron flux can be studied, with a proton rejection factor of about 106. The GAMMA-400 experiment is optimized to address a broad range of science topics, such as search for signatures of dark matter, studies of galactic and extragalactic gamma-ray sources, galactic and extragalactic diffuse emission, gamma-ray bursts, as well as high-precision measurements of spectra of high energy electrons, protons and nuclei up to the knee.

Published
2013

36. 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

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. 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

39. 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

40. Design and Performance of the GAMMA-400 Gamma-Ray Telescope for the Dark Matter Searches

Author

P. Spillantini, Yu. V. Gusakov, P. S. Marrocchesi, F. Longo, R. L. Aptekar, Marco Tavani, V. Bonvicini, M. I. Fradkin, N. Zampa, E. Mocchiutti, A. Vacchi, A.I. Arkhangelskiy, E. P. Mazets, K. A. Boyarchuk, A. A. Leonov, A. A. Moiseev, V. A. Kachanov, V. G. Zverev, R. Sparvoli, M. F. Runtso, V. V. Mikhailov, P. Picozza, Igor V. Moskalenko, A. M. Galper, I. V. Arkhangelskaja, I. A. Mereminskiy, V. G. Rodin, O. Adriani, S. I. Suchkov, Mirko Boezio, N. P. Topchiev, Paolo Maestro, Nicola Mori, M. D. Kheymits, P. Yu. Naumov, Vladimir Kaplin, P. Papini, E. Vannuccini, V. N. Zirakashvili, Yu. T. Yurkin, Jonathan F. Ormes, A. M., Galper, O., Adriani, R. L., Aptekar, I. V. Arkhangelskaja4 A. I., Arkhangelskiy, M., Boezio, V., Bonvicini, K. A., Boyarchuk, M. I., Fradkin, Gusakov, Y. u. V., V. A., Kaplin, V. A., Kachanov, M. D., Kheymit, A. A., Leonov, Longo, Francesco, E. P., Mazet, P., Maestro, P., Marrocchesi, I. A., Mereminskiy, V. V., Mikhailov, A. A., Moiseev, E., Mocchiutti, N., Mori, I. V., Moskalenko, Naumov, P. Y. u., P., Papini, P., Picozza, V. G., Rodin, M. F., Runtso, R., Sparvoli, P., Spillantini, S. I., Suchkov, M., Tavani, N. P., Topchiev, A., Vacchi, E., Vannuccini, Yurkin, Y. u. T., N., Zampa, V. G., Zverev, and V. N., Zirakashvili

Subjects
gamma-ray satellites, Proton, cosmic gamma-ray emission, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, dark matter, gamma-ray telescope, Physics and Astronomy (all), FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, High Energy Gamma-ray Astronomy, law.invention, Settore FIS/04 - Fisica Nucleare e Subnucleare, Telescope, Positron, law, Dark Matter, Instrumentation and Methods for Astrophysics (astro-ph.IM), Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Annihilation, Gamma ray, Celestial sphere, 85-05, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Fermi Gamma-ray Space Telescope
Abstract

The GAMMA-400 gamma-ray telescope is designed to measure the fluxes of gamma rays and cosmic-ray electrons + positrons, which can be produced by annihilation or decay of the dark matter particles, as well as to survey the celestial sphere in order to study point and extended sources of gamma rays, measure energy spectra of Galactic and extragalactic diffuse gamma-ray emission, gamma-ray bursts, and gamma-ray emission from the Sun. The GAMMA-400 covers the energy range from 100 MeV to 3000 GeV. Its angular resolution is ~0.01 deg (E{\gamma} > 100 GeV), the energy resolution ~1% (E{\gamma} > 10 GeV), and the proton rejection factor ~10E6. GAMMA-400 will be installed on the Russian space platform Navigator. The beginning of observations is planned for 2018., Comment: 11 pages, 3 figures, 2 tables; submitted to American Institute of Physics

Published
2012
Full Text
View/download PDF

41. PAMELA Measurements of Cosmic-ray Proton and Helium Spectra

Author

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

Subjects
Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Multidisciplinary, Proton, PAMELA detector, Astrophysics::High Energy Astrophysical Phenomena, chemistry.chemical_element, FOS: Physical sciences, Cosmic ray, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Galaxy, Spectral line, law.invention, Settore FIS/04 - Fisica Nucleare e Subnucleare, Supernova, chemistry, law, Antimatter, Astrophysics - High Energy Astrophysical Phenomena, Helium, Astrophysics::Galaxy Astrophysics
Abstract

Protons and helium nuclei are the most abundant components of the cosmic radiation. Precise measurements of their fluxes are needed to understand the acceleration and subsequent propagation of cosmic rays in the Galaxy. We report precision measurements of the proton and helium spectra in the rigidity range 1 GV-1.2 TV performed by the satellite-borne experiment PAMELA. We find that the spectral shapes of these two species are different and cannot be well described by a single power law. These data challenge the current paradigm of cosmic-ray acceleration in supernova remnants followed by diffusive propagation in the Galaxy. More complex processes of acceleration and propagation of cosmic rays are required to explain the spectral structures observed in our data., Comment: 13 pages, 4 figures, link to SOM (with tables) in the references. This manuscript has been accepted for publication in Science. This version has not undergone final editing. Please refer to the complete version of record at http://www.sciencemag.org/ [www.sciencemag.org]

Published
2011
Full Text
View/download PDF

42. OBSERVATIONS OF THE 2006 DECEMBER 13 AND 14 SOLAR PARTICLE EVENTS IN THE 80 MeV n–1-3 GeV n–1RANGE FROM SPACE WITH THE PAMELA DETECTOR

Author

O. Adriani, G. C. Barbarino, G. A. Bazilevskaya, R. Bellotti, M. Boezio, E. A. Bogomolov, L. Bonechi, M. Bongi, V. Bonvicini, S. Borisov, S. Bottai, A. Bruno, F. Cafagna, D. Campana, R. Carbone, P. Carlson, M. Casolino, G. Castellini, L. Consiglio, M. P. De Pascale, C. De Santis, N. De Simone, V. Di Felice, V. Formato, A. M. Galper, L. Grishantseva, W. Gillard, G. Jerse, A. V. Karelin, S. V. Koldashov, S. Y. Krutkov, A. N. Kvashnin, A. Leonov, V. Malakhov, L. Marcelli, A. G. Mayorov, W. Menn, V. V. Mikhailov, E. Mocchiutti, A. Monaco, N. Mori, N. Nikonov, G. Osteria, F. Palma, P. Papini, M. Pearce, P. Picozza, C. Pizzolotto, M. Ricci, S. B. Ricciarini, R. Sarkar, L. Rossetto, M. Simon, R. Sparvoli, P. Spillantini, Y. I. Stozhkov, A. Vacchi, E. Vannuccini, G. Vasilyev, S. A. Voronov, J. Wu, Y. T. Yurkin, G. Zampa, N. Zampa, V. G. Zverev, O., Adriani, Barbarino, Giancarlo, G. A., Bazilevskaya, R., Bellotti, M., Boezio, E. A., Bogomolov, L., Bonechi, M., Bongi, V., Bonvicini, S., Borisov, S., Bottai, A., Bruno, F., Cafagna, D., Campana, R., Carbone, P., Carlson, M., Casolino, G., Castellini, Consiglio, Lucia, M. P., De Pascale, C., De Santi, N., De Simone, V., Di Felice, V., Formato, A. M., Galper, L., Grishantseva, W., Gillard, G., Jerse, A. V., Karelin, S. V., Koldashov, S. Y., Krutkov, A. N., Kvashnin, A., Leonov, V., Malakhov, L., Marcelli, A. G., Mayorov, W., Menn, V. V., Mikhailov, E., Mocchiutti, A., Monaco, N., Mori, N., Nikonov, Osteria, Giuseppe, F., Palma, P., Papini, M., Pearce, P., Picozza, C., Pizzolotto, M., Ricci, S. B., Ricciarini, R., Sarkar, L., Rossetto, M., Simon, R., Sparvoli, P., Spillantini, Y. I., Stozhkov, A., Vacchi, E., Vannuccini, G., Vasilyev, S. A., Voronov, J., Wu, Y. T., Yurkin, G., Zampa, N., Zampa, V. G., Zverev, G. C., Barbarino, L., Consiglio, Formato, Valerio, Jerse, Giovanna, Mocchiutti, Emiliano, G., Osteria, and Vacchi, Andrea

Subjects
Sun: flares, Proton, Sun: coronal mass ejections (CMEs), instrument [space vehicles], Astrophysics::High Energy Astrophysical Phenomena, chemistry.chemical_element, space vehicles: instruments, Sun: coronal mass ejections: CMEs, Sun: flares, Astrophysics, law.invention, Settore FIS/04 - Fisica Nucleare e Subnucleare, law, Neutron, space vehicles: instruments, Nuclear Experiment, Helium, Physics, Range (particle radiation), Neutron monitor, Solar energetic particles, PAMELA detector, Astronomy and Astrophysics, Sun: coronal mass ejections: CMEs, coronal mass ejections (CMEs) [Sun], flares [Sun], chemistry, Space and Planetary Science, Event (particle physics)
Abstract

We present the space spectrometer PAMELA observations of proton and helium fluxes during the December 13 and 14, 2006 solar particle events. This is the first direct measurement of the solar energetic particles in space with a single instrument in the energy range from $\sim$ 80 MeV/n up to $\sim$ 3 GeV/n. In the event of December 13 measured energy spectra of solar protons and helium were compared with results obtained by neutron monitors and other detectors. Our measurements show a spectral behaviour different from those derived from the neutron monitor network. No satisfactory analytical fitting was found for the energy spectra. During the first hours of the December 13 event solar energetic particles spectra were close to the exponential form demonstrating rather significant temporal evolution. Solar He with energy up to ~1 GeV/n was recorded on December 13. In the event of December 14 energy of solar protons reached ~600 MeV whereas maximum energy of He was below 100 MeV/n. The spectra were slightly bended in the lower energy range and preserved their form during the second event. Difference in the particle flux appearance and temporal evolution in these two events may argue for a special conditions leading to acceleration of solar particles up to relativistic energies.

Published
2011

43. PAMELA and electrons

Author

G. C. Barbarino, Roberto Bellotti, V. Bonvicini, P. Spillantini, A. N. Kvashnin, Juan Wu, Y. I. Stozhkov, V. G. Zverev, O. Maksumov, A. A. Leonov, S. Bottai, Roberta Sparvoli, Per Carlson, D. Campana, L. A. Grishantseva, M. Bongi, N. Zampa, G. A. Bazilevskaya, V. V. Mikhailov, M. Simon, S. Y. Krutkov, Y. T. Yurkin, V. Di Felice, E. Mocchiutti, V. Malvezzi, Petter Hofverberg, F. Cafagna, N. N. Nikonov, S. V. Koldashov, Marco Ricci, M. P. De Pascale, Marco Casolino, P. Picozza, Giovanna Jerse, O. Adriani, William Gillard, L. Marcelli, A. Vacchi, A. Bruno, S. A. Voronov, E. A. Bogomolov, Laura Rossetto, R. Carbone, Lorenzo Bonechi, G. Castellini, S. V. Borisov, V. V. Malakhov, W. Menn, A. M. Galper, G. I. Vasilyev, C. De Santis, G. Osteria, Nicola Mori, L. Consiglio, Mirko Boezio, G. Zampa, Mark Pearce, S. B. Ricciarini, P. Papini, E. Vannuccini, E., Mocchiutti, O., Adriani, Barbarino, Giancarlo, G. A., Bazilevskaya, R., Bellotti, M., Boezio, E. A., Bogomolov, L., Bonechi, M., Bongi, V., Bonvicini, S., Borisov, S., Bottai, A., Bruno, F., Cafagna, D., Campana, R., Carbone, P., Carlson, M., Casolino, G., Castellini, Consiglio, Lucia, M. P., De Pascale, C., De Santi, V., Di Felice, A. M., Galper, L., Grishantseva, W., Gillard, P., Hofverberg, G., Jerse, S. V., Koldashov, S. Y., Krutkov, A. N., Kvashnin, A., Leonov, O., Maksumov, V., Malakhov, V., Malvezzi, L., Marcelli, W., Menn, V. V., Mikhailov, N., Mori, N., Nikonov, Osteria, Giuseppe, P., Papini, M., Pearce, P., Picozza, M., Ricci, S. B., Ricciarini, L., Rossetto, M., Simon, R., Sparvoli, P., Spillantini, Y. I., Stozhkov, A., Vacchi, E., Vannuccini, G., Vasilyev, S. A., Voronov, J., Wu, Y. T., Yurkin, G., Zampa, N., Zampa, and V. G., Zverev

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), Spectrometer, PAMELA detector, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Cosmic ray, Scintillator, law.invention, Nuclear physics, Positron, law, Neutron detection, Instrumentation
Abstract

The 15th of June 2006, the PAMELA satellite-borne experiment was launched from the Baikonur cosmodrome and it has been collecting data since July 2006. The apparatus comprises a time-of-flight system, a silicon-microstrip magnetic spectrometer, a silicon-tungsten electromagnetic calorimeter, an anticoincidence system, a shower tail counter scintillator and a neutron detector. The combination of these devices allows precision studies of the charged cosmic radiation to be conducted over a wide energy range (100 MeV-100's GeV) with high statistics. The measurement of the positron to electron fraction and of the electron energy spectrum in order to search for exotic sources, such as dark matter particle annihilations, are within the PAMELA primary scientific goal.

Published
2011

44. Results from PAMELA

Author

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

Subjects
Physics, Nuclear and High Energy Physics, genetic structures, Spectrometer, Calorimeter (particle physics), PAMELA detector, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics, Atomic and Molecular Physics, and Optics, law.invention, Settore FIS/04 - Fisica Nucleare e Subnucleare, Nuclear physics, Low earth orbit, law, Magnet, Atomic and Molecular Physics, Physics::Space Physics, Satellite, Astrophysics::Earth and Planetary Astrophysics, and Optics
Abstract

The PAMELA satellite experiment was launched into low earth orbit on June 15(th) 2006. The combination of a permanent magnet silicon strip spectrometer and a silicon-tungsten imaging calorimeter al ...

Published
2011

45. Upper limit on the antihelium flux in primary cosmic rays

Author

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

Subjects
Physics, Physics and Astronomy (miscellaneous), genetic structures, Astrophysics::High Energy Astrophysical Phenomena, media_common.quotation_subject, chemistry.chemical_element, Cosmic ray, Astrophysics, Asymmetry, Cosmology, Settore FIS/04 - Fisica Nucleare e Subnucleare, Flux (metallurgy), Baryon asymmetry, Rigidity (electromagnetism), chemistry, Antimatter, Helium, media_common
Abstract

The explanation of the observed baryon asymmetry, i.e., the almost complete absence of antimatter in the visible part of the universe, is one of the most important problems in cosmology. The real asymmetry value can be determined by direct measurements of the fluxes of antinuclei with charges |Z| ⩾ 2 in primary cosmic rays near the Earth. The results of the search for antihelium using data from the PAMELA experiment obtained from June 2006 to December 2009 are presented. No events with a charge of −2 have been detected in the rigidity range of 0.6–600 GV. An upper limit on the antihelium/helium flux ratio \(\\overline {He} /He\) has been presented as a function of the energy. An integral upper level of 4.7 × 10−7 is the lowest limit at rigidities above 14 GV.

Published
2011

46. The discovery of geomagnetically trapped cosmic ray antiprotons

Author

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

Subjects
Antiparticle, Astrophysics::High Energy Astrophysical Phenomena, elementary particles, FOS: Physical sciences, Cosmic ray, Astrophysics, magnetic fields, High Energy Physics - Experiment, Settore FIS/04 - Fisica Nucleare e Subnucleare, symbols.namesake, High Energy Physics - Experiment (hep-ex), cosmic rays, atmospheric effects, space vehicles, Neutron, Nuclear Experiment, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Astronomy and Astrophysics, South Atlantic Anomaly, Earth's magnetic field, Space and Planetary Science, Antiproton, Van Allen radiation belt, Antimatter, Physics::Space Physics, symbols, Physics::Accelerator Physics, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract

The existence of a significant flux of antiprotons confined to Earth's magnetosphere has been considered in several theoretical works. These antiparticles are produced in nuclear interactions of energetic cosmic rays with the terrestrial atmosphere and accumulate in the geomagnetic field at altitudes of several hundred kilometers. A contribution from the decay of albedo antineutrons has been hypothesized in analogy to proton production by neutron decay, which constitutes the main source of trapped protons at energies above some tens of MeV. This Letter reports the discovery of an antiproton radiation belt around the Earth. The trapped antiproton energy spectrum in the South Atlantic Anomaly (SAA) region has been measured by the PAMELA experiment for the kinetic energy range 60--750 MeV. A measurement of the atmospheric sub-cutoff antiproton spectrum outside the radiation belts is also reported. PAMELA data show that the magnetospheric antiproton flux in the SAA exceeds the cosmic-ray antiproton flux by three orders of magnitude at the present solar minimum, and exceeds the sub-cutoff antiproton flux outside radiation belts by four orders of magnitude, constituting the most abundant source of antiprotons near the Earth., Comment: Accepted for publication in ApJL

Published
2011

47. High-energy cosmic ray proton spectrum

Author

S. V. Borisov, Marco Ricci, Mark Pearce, S. B. Ricciarini, S. Bottai, Lorenzo Bonechi, P. Spilantini, P. Papini, E. Vannuccini, D. Campana, G. A. Bazilevskaya, L. Marcelli, S. A. Koldobsky, A. Vacchi, Yu. T. Yurkin, Marco Casolino, G. Zampa, A. Bruno, Mirko Boezio, S. V. Koldashev, A. M. Galper, N. Zampa, G. C. Barbarino, N. De Simone, R. Belotti, Yu. I. Stozhkov, P. Picozza, V. V. Malakhov, A. N. Kvashnin, G. V. Vasil’ev, V. G. Zverev, M. P. De Pascale, M. F. Runtso, A. V. Karelin, S. A. Voronov, E. Mocchiutti, V. V. Mikhailov, P. Carlson, E. A. Bogomolov, V. Di Feliche, Roberta Sparvoli, L. A. Grishantseva, I. A. Danilchenko, G. Osteria, A. G. Mayorov, F. Cafagna, M. Simon, A. A. Leonov, V. Bonvicini, V. Malvezzi, D. Fedele, M. Bongi, O. Adriani, W. Menn, S. V., Borisov, S. A., Voronov, A. M., Galper, L. A., Grishantseva, I. A., Danil’Chenko, V. G., Zverev, A. V., Karelin, S. V., Koldashev, S. A., Koldobsky, A. A., Leonov, A. G., Mayorov, V. V., Malakhov, V. V., Mikhailov, M. F., Runtso, Yurkin, Y. u. T., 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. V., Vasil’Ev, G., Zampa, N., Zampa, M., Casolino, D., Campana, P., Carlson, F., Cafagna, A. N., Kvashnin, V., Malvezzi, L., Marcelli, W., Menn, E., Mocchiutti, Osteria, Giuseppe, P., Papini, M. P., Pascale, P., Picozza, M., Pearce, M., Ricci, S., Ricciarini, M., Simon, N., Simone, R., Sparvoli, P., Spilantini, Stozhkov, Y. u. I., V., Feliche, and D., Fedele

Subjects
Physics, Range (particle radiation), Earth's orbit, Spectrometer, PAMELA detector, Proton, Calorimeter (particle physics), protons, Astrophysics::High Energy Astrophysical Phenomena, Cosmic ray, Electronic, Optical and Magnetic Materials, law.invention, Settore FIS/04 - Fisica Nucleare e Subnucleare, Nuclear physics, cosmic rays, law, calorimeter, Satellite
Abstract

The method is describes and the results of measurements of the high-energy cosmic ray proton spectrum in the PAMELA experiment are presented. This experiment is performed onboard an artificial satellite and is directed to study cosmic ray particle spectra in a wide energy range. Scientific equipment was put into Earth orbit in June, 2006 and is in operation mode until now. The scientific equipment of the PAMELA device incorporates various detectors, including a magnetic spectrometer and a position-sensitive strip calorimeter. This study was performed based on the data of these devices. The energy range of the measured proton spectrum is from 50 GeV to 15 TeV.

Published
2011

48. Precision studies of cosmic rays with the PAMELA satellite experiment

Author

Giovanna Jerse, L. Consiglio, William Gillard, S. V. Borisov, L. Marcelli, A. Vacchi, S. Bottai, A. Bruno, N. Zampa, G. A. Bazilevskaya, O. Adriani, S. A. Voronov, P. Spillantini, W. Menn, G. Zampa, V. Malvezzi, Roberta Sparvoli, Juan Wu, E. A. Bogomolov, Mirko Boezio, Mark Pearce, S. B. Ricciarini, L. A. Grishantseva, V. V. Mikhailov, Laura Rossetto, P. Carlson, P. Papini, S. V. Koldashov, Marco Ricci, E. Vannuccini, Petter Hofverberg, C. De Santis, Y. T. Yurkin, R. Carbone, M. Bongi, Lorenzo Bonechi, S. Y. Krutkov, M. P. De Pascale, V. Di Felice, G. C. Barbarino, F. Cafagna, E. Mocchiutti, A. M. Galper, V. Bonvicini, Roberto Bellotti, V. G. Zverev, Y. I. Stozhkov, G. Castellini, A. N. Kvashnin, P. Picozza, D. Campana, Marco Casolino, G. Osteria, Nicola Mori, N. De Simone, G. I. Vasilyev, M. Simon, A. A. Leonov, N. N. Nikonov, E., Mocchiutti, O., Adriani, Barbarino, Giancarlo, G. A., Bazilevskaya, R., Bellotti, M., Boezio, E. A., Bogomolov, L., Bonechi, M., Bongi, V., Bonvicini, S., Borisov, S., Bottai, A., Bruno, F., Cafagna, D., Campana, R., Carbone, P., Carlson, M., Casolino, G., Castellini, L., Consigio, M. P., De, C. D., Santi, N. D., Simone, V. D., Felice, A. M., Galper, W., Gillard, L., Grishantseva, P., Hofverberg, G., Jerse, S. V., Koldashov, S. Y., Krutkov, A. N., Kvashnin, A., Leonov, V., Malvezzi, L., Marcelli, W., Menn, V. V., Mikhailov, N., Mori, N. N., Nikonov, G., Osteria, P., Papini, M., Pearce, P., Picozza, M., Ricci, S. B., Ricciarini, L., Rossetto, M., Simon, R., Sparvoli, P., Spillantini, Y. I., Stozhkov, A., Vacchi, E., Vannuccini, G., Vasilyev, S. A., Voronov, J., Wu, Y. T., Yurkin, G., Zampa, N., Zampa, and V. G., Zverev

Subjects
Nuclear and High Energy Physics, NINA, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Cosmic background radiation, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Settore FIS/04 - Fisica Nucleare e Subnucleare, law.invention, ANTIPROTON FLUX, law, Nuclear Medicine and Imaging, SOLAR MINIMUM ACTIVITY, Ultra-high-energy cosmic ray, CALORIMETER, Physics, Radiation, Spectrometer, Calorimeter (particle physics), PAMELA detector, POSITRONS, Astronomy, PERFORMANCE, ORBIT, ELECTRONS, Antiproton, Radiology, Nuclear Medicine and Imaging, Radiology, MATTER
Abstract

The PAMELA satellite experiment was launched into low earth orbit on June 15(th) 2006. The combination of a permanent magnet silicon strip spectrometer, and a silicon-tungsten imaging calorimeter allows precision studies of the charged cosmic radiation to be conducted over a wide energy range (100 MeV - 200 GeV). A primary scientific goal is to search for dark matter particle annihilations by measuring the energy spectra of cosmic ray antiparticles. Latest results from the PAMELA experiment will be reviewed with a particular focus on cosmic ray antiprotons and positrons. The status of PAMELA measurements for other cosmic ray species will also be reviewed.

Published
2009

49. Dark Matter Research and the PAMELA Space Mission

Author

P. Picozza, L. Marcelli, O. Adriani, G. C. Barbarino, G. A. Bazilevskaya, R. Bellotti, M. Boezio, E. A. Bogomolov, L. Bonechi, M. Bongi, V. Bonvicini, S. Bottai, A. Bruno, F. Cafagna, D. Campana, P. Carlson, M. Casolino, G. Castellini, M. P. De Pascale, G. De Rosa, N. De Simone, V. Di Felice, A. M. Galper, L. Grishantseva, P. Hofverberg, A. Leonov, S. V. Koldashov, S. Y. Krutkov, A. N. Kvashnin, V. Malvezzi, W. Menn, V. V. Mikhailov, E. Mocchiutti, S. Orsi, G. Osteria, P. Papini, M. Pearce, M. Ricci, S. B. Ricciarini, M. Simon, R. Sparvoli, P. Spillantini, Y. I. Stozhkov, A. Vacchi, E. Vannuccini, G. Vasilyev, S. A. Voronov, Y. T. Yurkin, G. Zampa, N. Zampa, V. G. Zverev, David B. Cline, P., Picozza, L., Marcelli, O., Adriani, Barbarino, Giancarlo, G. A., Bazilevskaya, R., Bellotti, M., Boezio, E. A., Bogomolov, L., Bonechi, M., Bongi, V., Bonvicini, S., Bottai, A., Bruno, F., Cafagna, D., Campana, P., Carlson, M., Casolino, G., Castellini, M. P., De, DE ROSA, Gianfranca, N. D., Simone, V. D., Felice, A. M., Galper, L., Grishantseva, P., Hofverberg, A., Leonov, S. V., Koldashov, S. Y., Krutkov, A. N., Kvashnin, V., Malvezzi, W., Menn, V. V., Mikhailov, E., Mocchiutti, S., Orsi, G., Osteria, P., Papini, M., Pearce, M., Ricci, S. B., Ricciarini, M., Simon, R., Sparvoli, P., Spillantini, Y. I., Stozhkov, A., Vacchi, E., Vannuccini, G., Vasilyev, S. A., Voronov, Y. T., Yurkin, G., Zampa, N., Zampa, and V. G., Zverev

Subjects
Antimatter, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Dark Matter, Space Experiments, Physics and Astronomy (all), law.invention, Settore FIS/04 - Fisica Nucleare e Subnucleare, symbols.namesake, ANTIPROTON FLUX, law, SOLAR MINIMUM ACTIVITY, Neutron detection, Physics, Spectrometer, PAMELA detector, Astronomy, Galaxy, Antiproton, Van Allen radiation belt, symbols, COSMIC-RAY POSITRONS
Abstract

On the 15th of June 2006, the PAMELA satellite-borne experiment was launched from the Bajkonur cosmodrome and since July 2006 it has been collected data. The core of the apparatus is a silicon-microstrip magnetic spectrometer combined with a time-of-flight system, a silicon-tungsten electromagnetic calorimeter, an anticoincidence system, a shower tail counter scintillator and a neutron detector. The overall devices allow precision studies of the charged cosmic radiation to be conducted over a wide energy range (100 MeV - 100's GeV) with high statistics. The primary scientific goal is the measurement of the antiproton and positron energy spectra in order to search for exotic sources, such as dark matter particle annihilation. PAMELA is also searching for primordial antinuclei ((He) over bar). Concomitant, but not secondary, goals are the measurements of light nuclei and their isotopes for studying the energy dependence of cosmic ray lifetimes in the Galaxy, the monitoring of the solar activity and the study of the radiation belts.

Published
2009

50. 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

Catalog

Books, media, physical & digital resources
See catalog results