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22 results on '"Grishantseva, L. A."'

1. Latitudinal and radial gradients of galactic cosmic ray protons in the inner heliosphere – PAMELA and Ulysses observations

Author

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

Subjects
010504 meteorology & atmospheric sciences, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, Solar cycle 23, Cosmic ray, Electron, Astrophysics, 7. Clean energy, 01 natural sciences, law.invention, Telescope, Positron, law, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, Nuclear Experiment, 010303 astronomy & astrophysics, 0105 earth and related environmental sciences, Physics, Astronomy, Astronomy and Astrophysics, Antimatter, Physics::Space Physics, Astrophysics::Earth and Planetary Astrophysics, Nucleon, Heliosphere
Abstract

Ulysses, launched on 6 October 1990, was placed in an elliptical, high inclined (80.2) orbit around the Sun, and was switched off in June 2009. It has been the only spacecraft exploring high-latitude regions of the inner heliosphere. The Kiel Electron Telescope (KET) aboard Ulysses measures electrons from 3 MeV to a few GeV and protons and helium in the energy range from 6 MeV/nucleon to above 2 GeV/nucleon. The PAMELA (Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics) space borne experiment was launched on 15 June 2006 and is continuously collecting data since then. The apparatus measures electrons, positrons, protons, anti-protons and heavier nuclei from about 100 MeV to several hundreds of GeV. Thus the combination of Ulysses and PAMELA measurements is ideally suited to determine the spatial gradients during the extended minimum of solar cycle 23. For protons in the rigidity interval 1.6−1.8 GV we find a radial gradient of 2.7%/AU and a latitudinal gradient of −0.024%/degree. Although the latitudinal gradient is as expected negative, its value is much smaller than predicted by current particle propagation models. This result is of relevance for the study of propagation parameters in the inner heliosphere.

Published
2011
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2. Time dependence of the proton flux measured by PAMELA during the July 2006 - December 2009 solar minimum

Author

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

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Astrophysics - Solar and Stellar Astrophysics, Astrophysics::High Energy Astrophysical Phenomena, Physics::Space Physics, FOS: Physical sciences, Astrophysics - High Energy Astrophysical Phenomena, Solar and Stellar Astrophysics (astro-ph.SR)
Abstract

The energy spectra of galactic cosmic rays carry fundamental information regarding their origin and propagation. These spectra, when measured near Earth, are significantly affected by the solar magnetic field. A comprehensive description of the cosmic radiation must therefore include the transport and modulation of cosmic rays inside the heliosphere. During the end of the last decade the Sun underwent a peculiarly long quiet phase well suited to study modulation processes. In this paper we present proton spectra measured from July 2006 to December 2009 by PAMELA. The large collected statistics of protons allowed the time variation to be followed on a nearly monthly basis down to 400 MV. Data are compared with a state-of-the-art three-dimensional model of solar modulation., 17 pages, 5 figures, 1 table, to appear in Astrophysical Journal. Corrected two elements of Table 1

Published
2013

3. The cosmic-ray electron flux measured by the PAMELA experiment between 1 and 625 GeV

Author

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

Subjects
Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Spectral index, genetic structures, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, General Physics and Astronomy, FOS: Physical sciences, Cosmic ray, Astrophysics, Electron, Astrophysics::Cosmology and Extragalactic Astrophysics, 7. Clean energy, 01 natural sciences, Galaxy, Settore FIS/04 - Fisica Nucleare e Subnucleare, Solar wind, Positron, Electron flux, 0103 physical sciences, Astrophysics - High Energy Astrophysical Phenomena, 010303 astronomy & astrophysics
Abstract

Precision measurements of the electron component in the cosmic radiation provide important information about the origin and propagation of cosmic rays in the Galaxy. Here we present new results regarding negatively charged electrons between 1 and 625 GeV performed by the satellite-borne experiment PAMELA. This is the first time that cosmic-ray electrons have been identified above 50 GeV. The electron spectrum can be described with a single power law energy dependence with spectral index -3.18 +- 0.05 above the energy region influenced by the solar wind (> 30 GeV). No significant spectral features are observed and the data can be interpreted in terms of conventional diffusive propagation models. However, the data are also consistent with models including new cosmic-ray sources that could explain the rise in the positron fraction., 11 pages, 3 figures, accepted for publication in PRL

Published
2011
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4. PAMELA: Measurements of matter and antimatter in space

Author

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

Subjects
Physics and Astronomy (miscellaneous), Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astronomy and Astrophysics
Abstract

On 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 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 annihilations. PAMELA is also searching for primordial antinuclei (antihelium), and testing cosmic-ray propagation models through precise measurements of the antiparticle energy spectrum and precision studies of light nuclei and their isotopes. Moreover, PAMELA investigates phenomena connected with solar and earth physics. The main results and updated data will be presented. © Società Italiana di Fisica.

Published
2011
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5. Trapped protons in SAA measured by the PAMELA experiment

Author

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

Subjects
Nuclear and High Energy Physics, Magnetosphere, Cosmic rays, Radiation belt, Saa, Trapped protons
Published
2011

6. PAMELA and electrons RID C-1210-2011

Author

Mocchiutti, E, Adriani, O, Barbarino, G, Bazilevskaya, G, Bellotti, R, Boezio, M, Bogomolov, E, Bonechi, L, Bongi, M, Bonvicini, V, Borisov, S, Bottai, S, Bruno, A, Cafagna, F, Campana, D, Carbone, R, Carlson, P, Casolino, M, Castellini, G, Consiglio, L, DE PASCALE, Mp, DE SANTIS, C, Di Felice, V, Galper, A, Grishantseva, L, Gillard, W, Hofverberg, P, Jerse, G, Koldashov, S, Krutkov, S, Kvashnin, A, Leonov, A, Maksumov, O, Malakhov, V, Malvezzi, V, Marcelli, L, Menn, W, Mikhailov, V, Mori, N, Nikonov, N, Osteria, G, Papini, P, Pearce, M, Picozza, P, Ricci, M, Ricciarini, S, Rossetto, L, Simon, M, Sparvoli, R, Spillantini, P, Stozhkov, Y, Vacchi, A, Vannuccini, E, Vasilyev, G, Voronov, S, Wu, J, Yurkin, Y, Zampa, G, Zampa, N, and Zverev, V

Subjects
Settore FIS/04 - Fisica Nucleare e Subnucleare
Published
2011

7. Observations of the December 13 and 14, 2006, Solar Particle Events in the 80 MeV/n - 3 GeV/n range from space with PAMELA detector

Author

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

Subjects
High Energy Physics - Experiment (hep-ex), Astrophysics - Solar and Stellar Astrophysics, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Nuclear Experiment, Solar and Stellar Astrophysics (astro-ph.SR), High Energy Physics - Experiment
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., Comment: Accepted for publication on Astrophysical journal

Published
2011
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8. First detection of geomagnetically trapped antiprotons by the PAMELA experiment

Author

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

Subjects
Nuclear and High Energy Physics, Cosmic rays, Magnetosphere, Radiation belt, SAA, Trapped antiprotons, Astrophysics::High Energy Astrophysical Phenomena, Physics::Space Physics, Physics::Accelerator Physics, Physics::Atomic Physics, Nuclear Experiment
Abstract

We present the measurement of geomagnetically trapped antiprotons in the South Atlantic Anomaly performed by the PAMELA satellite-bourne experiment. The existence of an antiproton radiation belt, predicted by several models as the product of cosmic ray interactions with the residual terrestrial atmosphere, is evidenced for the first time. PAMELA measured the antiproton spectrum in the kinetic energy range between 60 and 750 MeV, reporting a trapped antiproton flux which exceeds by about 3 orders of magnitude the interplanetary cosmic ray antiproton flux. An estimation of the mean under-cutoff antiproton flux outside radiation belts has been also provided.

Published
2011

9. Sub-cutoff electrons and positrons spectra measured with PAMELA

Author

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

Subjects
Nuclear and High Energy Physics, Positrons, Magnetosphere, Electrons, Magnetic spectrometer
Published
2011

10. PAMELA results on the cosmic-ray antiproton flux from 60 MeV to 180 GeV in kinetic energy

Author

Adriani, O, Barbarino, G, Bazilevskaya, G, Bellotti, R, Boezio, M, Bogomolov, E, Bonechi, L, Bongi, M, Bonvicini, V, Borisov, S, Bottai, S, Bruno, A, Cafagna, F, Campana, D, Carbone, R, Carlson, P, Casolino, M, Castellini, G, Consiglio, L, DE PASCALE, Mp, DE SANTIS, C, De Simone, N, De Felice, V, Galper, A, Gillard, W, Grishantseva, L, Hofverberg, P, Jerse, G, Karelin, A, Koldashov, S, Krutkov, S, Kvashnin, A, Leonov, A, Malvezzi, V, Marcelli, L, Mayorov, A, Menn, W, Mikhailov, V, Minori, M, Mocchiutti, E, Monaco, A, Mori, N, Nikonov, N, Osteria, G, Papini, P, Pearce, M, Picozza, P, Pizzolotto, C, Ricci, M, Ricciarini, S, Rossetto, L, Simon, M, Sparvoli, R, Spillantini, P, Stozhkov, Y, Taddei, E, Vacchi, A, Vannuccini, E, Vasilyev, G, Voronov, S, Wu, J, Yurkin, Y, Zampa, G, Zampa, N, Zverev, V, Barbarino, Giancarlo, D., Campana, R., Carbone, L., Consiglio, and G., Osteria

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Antiparticle, Particle physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, FOS: Physical sciences, General Physics and Astronomy, Flux, Cosmic ray, Kinetic energy, 01 natural sciences, Settore FIS/04 - Fisica Nucleare e Subnucleare, Baryon, Antiproton, Antimatter, 0103 physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, Astrophysics - High Energy Astrophysical Phenomena, Nuclear Experiment, 010306 general physics
Abstract

The satellite-borne experiment PAMELA has been used to make a new measurement of the cosmic-ray antiproton flux and the antiproton-to-proton flux ratio which extends previously published measurements down to 60 MeV and up to 180 GeV in kinetic energy. During 850 days of data acquisition approximately 1500 antiprotons were observed. The measurements are consistent with purely secondary production of antiprotons in the galaxy. More precise secondary production models are required for a complete interpretation of the results., 11 pages, 3 figures, 1 table. Accepted for publication in Physical Review Letters

Published
2010

11. Measurements of quasi-trapped electron and positron fluxes with PAMELA

Author

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

Subjects
Settore FIS/04 - Fisica Nucleare e Subnucleare
Published
2009

12. Observation of an anomalous positron abundance in the cosmic radiation

Author

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

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics
Abstract

Positrons are known to be produced in interactions between cosmic-ray nuclei and interstellar matter ("secondary production"). Positrons may, however, also be created by dark matter particle annihilations in the galactic halo or in the magnetospheres of near-by pulsars. The nature of dark matter is one of the most prominent open questions in science today. An observation of positrons from pulsars would open a new observation window on these sources. Here we present results from the PAMELA satellite experiment on the positron abundance in the cosmic radiation for the energy range 1.5 - 100 GeV. Our high energy data deviate significantly from predictions of secondary production models, and may constitute the first indirect evidence of dark matter particle annihilations, or the first observation of positron production from near-by pulsars. We also present evidence that solar activity significantly affects the abundance of positrons at low energies., Comment: Submitted to Nature, 20 pages, 5 figures, 1 table

Published
2008
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13. Cosmic rays studies with the PAMELA space experiment

Author

Sparvoli, R., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Massimo Bongi, Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carlson, P., Casolino, M., Castellini, G., Pascale, M. P., Santis, C., Simone, N., Di Felice, V., Galper, A. M., Grishantseva, L., Hofverberg, P., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Mocchiutti, E., Osteria, G., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Simon, M., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Yurkin, Y. T., Zampa, G., Zampa, N., Zverev, V. G., R., Sparvoli, 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 Pascale, C., De Santi, N., De Simone, V., Di Felice, A. M., Galper, L., Grishantseva, P., Hofverberg, S. V., Koldashov, S. Y., Krutkov, A. N., Kvashnin, A., Leonov, V., Malvezzi, L., Marcelli, W., Menn, V. V., Mikhailov, E., Mocchiutti, G., Osteria, P., Papini, M., Pearce, P., Picozza, M., Ricci, S. B., Ricciarini, M., Simon, 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
Physics and Astronomy (miscellaneous), Astronomy and Astrophysics, Settore FIS/04 - Fisica Nucleare e Subnucleare

14. Latest results from the Pamela experiment

Author

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

15. First Results from the PAMELA Space Mission

Author

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

Subjects
High Energy Physics - Experiment (hep-ex), Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics, High Energy Physics - Experiment
Abstract

On 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 primary scientific goal is the measurement of the antiproton and positron energy spectrum in order to search for exotic sources, such as dark matter particle annihilations. PAMELA is also searching for primordial antinuclei (anti-helium), and testing cosmic-ray propagation models through precise measurements of the antiparticle energy spectrum and precision studies of light nuclei and their isotopes. We review the status of the apparatus and present preliminary results concerning antiparticle measurements and dark-matter indirect searches., Comment: Parallel talk at ICHEP08, Philadelphia, USA, July 2008. 5 pages, LaTeX, 3 eps figures

16. Measurement of the He nuclei flux at high energies with the PAMELA experiment

Author

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

17. Sub-cutoff electrons and positrons in the near Earth space

Author

Grishantseva, L. A., Adriani, O., Barbarino, G., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S. V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carlson, P., Casolino, M., Castellini, G., Pascale, M. P., Di Felice, V., Galper, A. M., Hofverberg, P., Leonov, A. A., Koldashov, S. V., Krutkov, S. Yu, Kvashnin, A. N., Malakhov, V. V., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Mocchiutti, E., Osteria, G., Papini, P., Pearce, M., Piergiorgio Picozza, Ricci, M., Ricciarini, S., Simon, M., Simone, N., Sparvoli, R., Spillantini, P., Stozhkov, Yu I., Vacchi, A., Vannuccini, E., Vasiliev, G. V., Voronov, S. A., Yurkin, Yu T., Zampa, G., Zampa, N., and Zverev, V. G.

18. The PAMELA space experiment

Author

Mocchiutti, E., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Pascale, M. P., Simone, N., Di Felice, V., Galper, A. M., Gillard, W., Grishantseva, L., Hofverberg, P., Jerse, G., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Maksumov, O., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Nikonov, N. N., Osteria, G., Papini, P., Pearce, M., Picozza, P., Ricci, M., Sergio Bruno Ricciarini, Rossetto, L., Runtso, M., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Wu, J., Yurkin, Y. T., Zampa, G., Zampa, N., and Zverev, V. G.

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics - High Energy Astrophysical Phenomena
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 primary scientific goal is the measurement of the antiproton and positron energy spectrum in order to search for exotic sources, such as dark matter particle annihilations. PAMELA is also searching for primordial antinuclei (anti-helium) and testing cosmic-ray propagation models through precise measurements of the anti-particle energy spectrum and precision studies of light nuclei and their isotopes. Moreover, PAMELA is investigating phenomena connected with solar and earth physics., Proceedings for the "XLIVth Rencontres de Moriond session devoted to Electroweak Interactions and Unified Theories", La Thuile 2009

20. Antimatter and dark matter searches in space: The PAMELA space mission

Author

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

21. Comparison of models and measurements of protons of trapped and secondary origin with PAMELA experiment

Author

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

22. Positrons and electrons in primary cosmic rays as measured in the PAMELA experiment

Author

M. Simon, Valeria Di Felice, V. V. Mikhailov, P. Carlson, D. Fedele, A. M. Galper, M. Bongi, Yu. I. Stozhkov, V. Malvezzi, A. Vacchi, S. A. Voronov, A. Bruno, Yu. T. Yurkin, Roberto Bellotti, P. Picozza, E. Taddei, G. V. Vasil’ev, Nicola de Simone, P. Spillantini, A. N. Kvashnin, G. Castellini, E. A. Bogomolov, F. Cafagna, S. Yu. Krutkov, D. Campana, V. Bonvicini, O. Adriani, S. Bottai, Silvio Orsi, Marco Casolino, W. Menn, L. Marcelli, G. A. Bazilevskaya, M. Minori, G. C. Barbarino, Mirko Boezio, Lorenzo Bonechi, N. Zampa, G. Zampa, Giuseppe Osteria, A. A. Leonov, Roberta Sparvoli, Gianfranca De Rosa, V. G. Zverev, Petter Hofverberg, S. V. Koldashov, Marco Ricci, Mark Pearce, S. B. Ricciarini, P. Papini, E. Vannuccini, E. Mocchiutti, L. A. Grishantseva, Maria Pia De Pascale, S. V. Borisov, Adriani, O, Bazilevskaya, G. A., Barbarino, Giancarlo, Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S. V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carlson, P., Casolino, M., Castellini, G., Pascale, M. P., DE ROSA, Gianfranca, Fedele, D., Felice, V., Galper, A. M., Grishantseva, L. A., Hofverberg, P., Leonov, A. A., Koldashov, S. V., Krutkov, S. Y. u., Kvashnin, A. N., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Minori, M., Mocchiutti, E., Orsi, S., Osteria, G., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Simon, M., Simone, N., Sparvoli, R., Spillantini, P., Stozhkov, Y. u. I., Taddei, E., Vacchi, A., Vannuccini, E., Vasil'Ev, G. V., Voronov, S. A., Yurkin, Y. u. T., Zampa, G., Zampa, N., and Zverev, V. G.

Subjects
Primary cosmic rays, General Physics and Astronomy, Cosmic ray, Particle detectors, Electrons, Electron, law.invention, Settore FIS/04 - Fisica Nucleare e Subnucleare, Nuclear physics, Physics and Astronomy (all), Positron, Positrons, Electromagnetic calorimeter, Primary (astronomy), law, Near-Earth, Cosmic rays, Energy interval, High-energy electron, Magnetic spectrometers, Polar orbit, Separation techniques, Cosmology, Physics, PAMELA detector, Astronomy, On board, Satellite
Abstract

The PAMELA experiment is being carried out on board the Russian satellite Resurs DK1 placed in the near-earth near-polar orbit on June 15, 2006. The apparatus comprising a silicon-strip magnetic sp ...

Published
2009

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