Author: "Boezio, M." / Topic: physics - Searchworks@Jio Institute Digital Library Search Results

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92 results on '"Boezio, M."'

1. Time dependence of the helium flux measured by PAMELA

Author: Marcelli N., Adriani O., Barbarino G. C., Bazilevskaya G. A., Bellotti R., Boezio M., Bogomolov E. A., Bongi M., Bonvicini V., Bottai S., Bruno A., Cafagna F., Campana D., Carlson P., Casolino M., Castellini G., De Santis C., Di Felice V., Galper A. M., Karelin A.V., Koldashov S. V., Koldobskiy S., Krutkov S. Y., Kvashnin A. N., Leonov A., Malakhov V., Marcelli L., Martucci M., Mayorov A. G., Menn W., Mergè M., Mikhailov V. V., Mocchiutti E., Monaco A., Mori N., Munini R., Osteria G., Panico B., 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., Potgieter M. S., Aslam O. P. M., and Bisschoff D.
Subjects: Physics, QC1-999
Abstract: Precision measurements of the Z = 2 component in cosmic radiation provide crucial information about the origin and propagation of the second most abundant cosmic ray species in the Galaxy (9% of the total). These measurements, acquired with the PAMELA space experiment orbiting Earth, allow to study solar modulation in details. Helium modulation is compared to the modulation of protons to study possible dependencies on charge and mass. The time dependence of helium fluxes on a monthly basis measured by PAMELA has been studied for the period between July 2006 to January 2016 in the energy range from 800 MeV/n to ~ 20 GeV/n.
Published: 2019
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2. PAMELA Measurements of Cosmic-Ray Proton and Helium Spectra

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., 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., 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.
Published: 2011
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3. New stage in high-energy gamma-ray studies with GAMMA-400 after Fermi-LAT

Author: Topchiev N.P., Galper A.M., Bonvicini V., Adriani O., Arkhangelskaja I.V., Arkhangelskiy A.I., Bakaldin A.V., Bobkov S.G., Boezio M., Dalkarov O.D., Egorov A.E., Gorbunov M.S., Gusakov Yu.V., Hnatyk B.I., Kadilin V.V., Kaplin V.A., Kheymits M.D., Korepanov V.E., Leonov A.A., Longo F., Mikhailov V.V., Mocchiutti E., Moiseev A.A., Moskalenko I.V., Naumov P.Yu., Picozza P., Runtso M.F., Serdin O.V., Sparvoli R., Spillantini P., Stozhkov Yu.I., Suchkov S.I., Taraskin A.A., Tavani M., Yurkin Yu.T., and Zverev V.G.
Subjects: Physics, QC1-999
Abstract: Fermi-LAT has made a significant contribution to the study of high-energy gamma-ray diffuse emission and the observations of 3000 discrete sources. However, one third of all gamma-ray sources (both galactic and extragalactic) are unidentified, the data on the diffuse gamma-ray emission should be clarified, and signatures of dark matter particles in the high-energy gamma-ray range are not observed up to now. GAMMA-400, the currently developing gamma-ray telescope, will have angular (∼0.01∘ at 100 GeV) and energy (∼1% at 100 GeV) resolutions in the energy range of 10–1000 GeV which are better than Fermi-LAT (as well as ground gamma-ray telescopes) by a factor of 5–10. It will observe some regions of the Universe (such as the Galactic Center, Fermi Bubbles, Crab, Cygnus, etc.) in a highly elliptic orbit (without shading the telescope by the Earth) continuously for a long time. It will allow us to identify many discrete sources, to clarify the structure of extended sources, to specify the data on the diffuse emission, and to resolve gamma rays from dark matter particles.
Published: 2017
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4. PAMELA mission: heralding a new era in cosmic ray physics

Author: Ricciarini S. B., 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., De Donato C., De Pascale M.P., De Santis C., De Simone N., Di Felice V., Formato V., Galper A.M., Karelin A.V., Kheymits M.D., Koldashov S.V., Koldobskiy S., Krutkov S.Yu., 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., Sarkar R., Simon M., Scotti V., 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, QC1-999
Abstract: After seven years of data taking in space, the experiment PAMELA is showing very interesting features in cosmic rays, namely in the fluxes of protons, helium, electrons, 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. The continuous particle detection is allowing a constant monitoring of the solar activity and detailed study of the solar modulation for a long period, giving important improvements to the comprehension of the heliosphere mechanisms. PAMELA is also measuring the radiation environment around the Earth, and has recently discovered an antiproton radiation belt.
Published: 2014
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5. TRAPPED proton fluxes at low earth orbits measured by the PAMELA experiment

Author: 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., 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., 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., Zverev, V. G., Adriani, O. b., Barbarino, Giancarlo, Bazilevskaya, G., Bellotti, R. g., Boezio, M., Bogomolov, E., Bongi, M. b., Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M. l., Castellini, G., C. n., De, Simone, N. D., Felice, V. o., Formato, V. p., Galper, A., Karelin, A., Koldashov, S., Koldobskiy, S., Krutkov, S., Kvashnin, A., Leonov, A., Malakhov, V., Marcelli, L. n., Martucci, M. s., Mayorov, A., Menn, W., Merg??????, M. n., Mikhailov, V., Mocchiutti, E., Monaco, A. g., Mori, N. b., Munini, R. p., Osteria, Giuseppe, Palma, F. n., Panico, B., Papini, P., Pearce, M., Picozza, P. n., Ricci, M., Ricciarini, S. m., Sarkar, R. t., Scotti, V. d., Simon, M., Sparvoli, R. n., Spillantini, P. b., Stozhkov, Y., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S., Yurkin, Y., Zampa, G., Zampa, N., Zverev, V., O., Adriani, G. C., Barbarino, G. A., Bazilevskaya, R., Bellotti, M., Boezio, E. A., Bogomolov, M., Bongi, V., Bonvicini, S., Bottai, A., Bruno, F., Cafagna, D., Campana, R., Carbone, P., Carlson, M., Casolino, G., Castellini, C., De Donato, C., De Santi, N., De Simone, V., Di Felice, V., Formato, A. M., Galper, A. V., Karelin, S. V., Koldashov, S., Koldobskiy, S. Y., Krutkov, A. N., Kvashnin, A., Leonov, V., Malakhov, L., Marcelli, M., Martucci, A. G., Mayorov, W., Menn, M., Mergé, V. V., Mikhailov, E., Mocchiutti, A., Monaco, N., Mori, Munini, Riccardo, G., Osteria, F., Palma, B., Panico, P., Papini, M., Pearce, P., Picozza, M., Ricci, S. B., Ricciarini, R., Sarkar, V., Scotti, M., Simon, R., Sparvoli, P., Spillantini, Y. I., Stozhkov, A., Vacchi, E., Vannuccini, G. I., Vasilyev, S. A., Voronov, Y. T., Yurkin, G., Zampa, N., Zampa, and V. G., Zverev
Subjects: trapped particles, earth magnetic field, Proton, elementary particles, FOS: Physical sciences, Cosmic ray, magnetic fields, Kinetic energy, Nuclear physics, Physics - Space Physics, cosmic rays, PAMELA, Geocentric orbit, Earth and Planetary Astrophysics (astro-ph.EP), High Energy Astrophysical Phenomena (astro-ph.HE), Astroparticle physics, Physics, Settore FIS/01, astroparticle physics, atmospheric effects, space vehicles, Astronomy and Astrophysics, Space and Planetary Science, protons, PAMELA, trapped particles, earth magnetic field, protons, Space Physics (physics.space-ph), Charged particle, Magnetic field, Earth's magnetic field, Physics::Space Physics, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Earth and Planetary Astrophysics
Abstract: We report an accurate measurement of the geomagnetically trapped proton fluxes for kinetic energy above > 70 MeV performed by the PAMELA mission at low Earth orbits (350-610 km). Data were analyzed in the frame of the adiabatic theory of charged particle motion in the geomagnetic field. Flux properties were investigated in detail, providing a full characterization of the particle radiation in the South Atlantic Anomaly region, including locations, energy spectra and pitch angle distributions. PAMELA results significantly improve the description of the Earth's radiation environment at low altitudes placing important constraints on the trapping and interaction processes, and can be used to validate current trapped particle radiation models., 22 pages, 5 figures
Published: 2015

6. Separation of electrons and protons in the GAMMA-400 gamma-ray telescope

Author: Leonov, A. A., 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., 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., Popov, A. V., 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., Zverev, V. G., Leonov, A. A, Galper, A. M., Bonvicini, V., Topchiev, N. P., Adriaini, 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, Paolo, Dedenko, G. L., De Donato, C., Dogiel, V. A., Gorbunov, M. S., Gusakov, Y. u. V., Hnatyk, B. I., Kadilin, V. V., Kaplin, V. A., Kaplun, A. A., Kheymits, M. D., Korepanov, V. E., Larsson, J., Loginov, V. A., Longo, Francesco, Maestro, P., Marrocchesi, P. S., Mikhailov, V. V., Mocchiutti, E., Moiseev, A. A., Mori, N., Moskalenko, I. V., Naumov, P. Y. u., 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., Taraskin, A. A., Tavani, M., Tiberio, A., Tyurin, E. M., Ulanov, M. V., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Yurkin, Y. u. T., Zampa, N., Zirakashvili, V. N., and Zverev, V. G.
Subjects: Space experiments, Atmospheric Science, Physics - Instrumentation and Detectors, Hadron and electromagnetic shower, Astrophysics::High Energy Astrophysical Phenomena, Gamma ray, FOS: Physical sciences, Aerospace Engineering, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Electron, law.invention, Telescope, Positron, law, Instrumentation and Methods for Astrophysics (astro-ph.IM), Cosmic rays, Physics, Range (particle radiation), Settore FIS/04, Gamma rays, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Instrumentation and Detectors (physics.ins-det), Space experiment, Hadron and electromagnetic showers, Geophysics, Space and Planetary Science, Gamma-ray telescope, General Earth and Planetary Sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, Astrophysics - Instrumentation and Methods for Astrophysics, 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 with the following scientific goals: 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. The main components of cosmic rays are protons and helium nuclei, whereas the part of lepton component in the total flux is ~10E-3 for high energies. In present paper, the capability of the GAMMA-400 gamma-ray telescope to distinguish electrons and positrons from protons in cosmic rays is investigated. The individual contribution to the proton rejection is studied for each detector system of the GAMMA-400 gamma-ray telescope. Using combined information from all detector systems allow us to provide the proton rejection from electrons with a factor of ~4x10E5 for vertical incident particles and ~3x10E5 for particles with initial inclination of 30 degrees. The calculations were performed for the electron energy range from 50 GeV to 1 TeV., Comment: 19 pages, 10 figures, submitted to Advances and Space Research
Published: 2015

7. Modifications of a method for low energy gamma-ray incident angle reconstruction in the GAMMA-400 gamma-ray telescope

Author: Leonov, Aa, Galper, Am, Topchiev, Np, Bonvicini, V, Adriani, O, Arkhangelskaja, Iv, Arkhangelskiy, Ai, Bakaldin, Av, Bobkov, Sg, Boezio, M, Dalkarov, Od, Egorov, Ae, Glushkov, Na, Gorbunov, Ms, Gusakov, u. V., Y, Hnatyk, Bi, Kadilin, Vv, Kaplin, Va, Kheymits, Md, Korepanov, Ve, Longo, F, Mikhailov, Vv, Mocchiutti, E, Moiseev, Aa, Moskalenko, Iv, Naumov, Py, Picozza, P, Runtso, Mf, Serdin, Ov, Sparvoli, R, Spillantini, P, Stozhkov, Yi, Suchkov, Si, Taraskin, Aa, Tavani, M, Yurkin, Yt, Zverev, Vg, M. Strikhanov, O. Nagornov, S. Rubin, Leonov, A. A., Galper, A. M., Topchiev, N. P., Bonvicini, V., Adriani, O., Arkhangelskaja, I. V., Arkhangelskiy, A. I., Bakaldin, A. V., Bobkov, S. G., Boezio, M., Dalkarov, O. D., Egorov, A. E., Glushkov, N. A., Gorbunov, M. S., Gusakov, Yu. V., Hnatyk, B. I., Kadilin, V. V., Kaplin, V. A., Kheymits, M. D., Korepanov, V. E., 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: Settore FIS/01, Physics, History, business.industry, Gamma ray, gamma-ray telescopes, gamma-ray telescope, Computer Science Applications, Education, gamma-ray astrophysics, Low energy, Optics, business, Gamma Ray, Gamm400, Fermi Gamma-ray Space Telescope
Abstract: The GAMMA-400 gamma-ray telescope is designed to measure the gamma-ray fluxes in the energy range from ∼20 MeV to ∼1 TeV, performing a sensitive search for high-energy gamma-ray emission when annihilating or decaying dark matter particles. Such measurements will be also associated with the following scientific goals: searching for new and studying known Galactic and extragalactic discrete high-energy gamma-ray sources (supernova remnants, pulsars, accreting objects, microquasars, active galactic nuclei, blazars, quasars). It will be possible to study their structure with high angular resolution and measuring their energy spectra and luminosity with high-energy resolution; identify discrete gamma-ray sources with known sources in other energy ranges. The major advantage of the GAMMA-400 instrument is excellent angular and energy resolutions for gamma rays above 10 GeV. The gamma-ray telescope angular and energy resolutions for the main aperture at 100-GeV gamma rays are ∼0.01% and ∼1%, respectively. The motivation of presented results is to improve physical characteristics of the GAMMA-400 gamma-ray telescope in the energy range of ∼20-100 MeV, most unexplored range today. Such observations are crucial today for a number of high-priority problems faced by modern astrophysics and fundamental physics, including the origin of chemical elements and cosmic rays, the nature of dark matter, and the applicability range of the fundamental laws of physics. To improve the reconstruction accuracy of incident angle for low-energy gamma rays the special analysis of topology of pair-conversion events in thin layers of converter performed. Choosing the pair-conversion events with more precise vertical localization allows us to obtain significantly better angular resolution in comparison with previous and current space and ground-based experiments. For 50-MeV gamma rays the GAMMA-400 gamma-ray telescope angular resolution is better than 50.
Published: 2017

8. 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

9. Cosmic-Ray Positron Energy Spectrum Measured by PAMELA

Author: PAMELA Collaboration, Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Bianco, A., 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. A., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Martucci, M., Mayorov, A. G., Menn, W., Merge', M., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Palma, F., 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., Stochaj, S. J., Stockton, J. C., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Yurkin, Y. T., Zampa, G., Zampa, N., Zverev, V. G., Adriani, O., Barbarino, Giancarlo, Bazilevskaya, G. A., Bellotti, R., Bianco, A., 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. A., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Martucci, M., Mayorov, A. G., Menn, W., Merg?, M., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, Giuseppe, Palma, F., 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., Stochaj, S. J., Stockton, J. C., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Yurkin, Y. T., Zampa, G., Zampa, N., Zverev, V. G., O., Adriani, G. C., Barbarino, G. A., Bazilevskaya, R., Bellotti, A., Bianco, 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, Formato, Valerio, A. M., Galper, A. V., Karelin, S. V., Koldashov, S. A., Koldobskiy, S. Y., Krutkov, A. N., Kvashnin, A., Leonov, V., Malakhov, L., Marcelli, M., Martucci, A. G., Mayorov, W., Menn, M., Mergé, V. V., Mikhailov, Mocchiutti, Emiliano, A., Monaco, N., Mori, Munini, Riccardo, G., Osteria, F., Palma, 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, S. J., Stochaj, J. C., Stockton, Y. I., Stozhkov, Vacchi, Andrea, E., Vannuccini, G. I., Vasilyev, S. A., Voronov, Y. T., Yurkin, G., Zampa, N., Zampa, and V. G., Zverev
Subjects: Solar minimum, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, FOS: Physical sciences, General Physics and Astronomy, Flux, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Kinetic energy, Cosmic Ray, 01 natural sciences, 7. Clean energy, Settore FIS/04 - Fisica Nucleare e Subnucleare, law.invention, Positron, law, Cosmic Rays, Dark Matter, 0103 physical sciences, 010303 astronomy & astrophysics, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, PAMELA detector, 010308 nuclear & particles physics, Galaxy, Astrophysics - High Energy Astrophysical Phenomena
Abstract: Precision measurements of the positron component in the cosmic radiation provide important information about the propagation of cosmic rays and the nature of particle sources in our Galaxy. The satellite-borne experiment PAMELA has been used to make a new measurement of the cosmic-ray positron flux and fraction that extends previously published measurements up to 300 GeV in kinetic energy. The combined measurements of the cosmic-ray positron energy spectrum and fraction provide a unique tool to constrain interpretation models. During the recent solar minimum activity period from July 2006 to December 2009 approximately 24500 positrons were observed. The results cannot be easily reconciled with purely secondary production and additional sources of either astrophysical or exotic origin may be required., Comment: 14 pages, 4 figures, 1 table. Accepted for publication in Physical Review Letters. Corrected a typo in the flux units of Table 1
Published: 2013

10. The PAMELA space experiment: First year of operation

Author: Boezio, M., Adriani, O., Ambriola, M., Basili, A., Bazilevskaja, G. A., Bellotti, R., Bogomolov, E. A., Bonechi, L., Bongi, M., Bongiorno, L., Bonvicini, V., Bruno, A., Cafagna, F., Campana, D., Carlson, P., Casolino, M., Castellini, G., De Pascale, M. P., Di Felice, V., Fedele, D., Galper, A. M., Hofverberg, P., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Lundquist, J., Maksumov, O., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Minori, M., Misin, S., Mocchiutti, E., Morselli, A., Nikonov, N. N., Orsi, S., Osteria, G., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Runtso, M. F., Russo, S., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Taddei, E., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Yurkin, Y. T., Zampa, G., Zampa, N., Zverev, V. G., BARBARINO, GIANCARLO, DE ROSA, GIANFRANCA, Barbarino, Giancarlo, Pamela, Collaboration, DE ROSA, Gianfranca, Boezio, M., Adriani, O., Ambriola, M., Basili, A., Bazilevskaja, G. A., Bellotti, R., Bogomolov, E. A., Bonechi, L., Bongi, M., Bongiorno, L., Bonvicini, V., Bruno, A., Cafagna, F., Campana, D., Carlson, P., Casolino, M., Castellini, G., De Pascale, M. P., Di Felice, V., Fedele, D., Galper, A. M., Hofverberg, P., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Lundquist, J., Maksumov, O., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Minori, M., Misin, S., Mocchiutti, E., Morselli, A., Nikonov, N. N., Orsi, S., Osteria, G., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Runtso, M. F., Russo, S., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Taddei, E., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Yurkin, Y. T., Zampa, G., Zampa, N., and Zverev, V. G.
Subjects: Physics, Physics and Astronomy (all), History, Space experiment, PAMELA detector, law, Astronomy, Satellite, Astrophysics, Settore FIS/04 - Fisica Nucleare e Subnucleare, Computer Science Applications, Education, law.invention
Abstract: On the 15th of June 2006 the PAMELA experiment, mounted on the Resurs DK1 satellite, was launched from the Baikonur cosmodrome and it has been collecting data since July 2006. PAMELA is a satellite ...
Published: 2008

11. 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

12. 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

13. NINA: a silicon detector for cosmic-ray astrophysics

Author: Sparvoli, R., Bidoli, V., Casolino, M., De Pascale, M. P., Furano, G., Iannucci, A., Morselli, A., Picozza, P., Reali, E., Bakaldin, A., Galper, A., Koldashov, S., Korotkov, M., Leonov, A., Mikhailov, V., Murashov, A., Voronov, S., Boezio, M., Bonvicini, V., Cirami, R., Vacchi, A., Zampa, N., Ambriola, M., Bellotti, R., Cafagna, F., Ciacio, F., Circella, M., De Marzo, C., Adriani, O., Papini, P., Piccardi, S., Spillantini, P., and Straulino, S.
Subjects: Astrophysics, Cosmic ray measurement, Satellite observatories, Silicon sensors, Space applications, Cosmic ray nuclei, Cosmic ray detectors, Nuclear and High Energy Physics, Astrophysics::High Energy Astrophysical Phenomena, Silicon technology, Cosmic ray, Particle identification, Physics::Geophysics, Settore FIS/04 - Fisica Nucleare e Subnucleare, Instrumentation, Cosmic rays, Physics, Range (particle radiation), Space vehicles, Astronomy, On board, Orbit, Physics::Space Physics, Silicon detector, Polar, Satellite, Astrophysics::Earth and Planetary Astrophysics
Abstract: The NINA apparatus, on board the satellite Resurs-01 n.4, has been orbiting the Earth since July 10th, 1998, in polar revolution at 1 AU. Its scientific goal is the study of the galactic, solar and anomalous components of the cosmic rays in the range 10–200 MeV/n. After a description of the instrument, results of GCR fluxes measurements and of particle identification in orbit are presented.
Published: 2001

14. Light Isotope Abundances in Solar Energetic Particles measured by the Space Instrument NINA

Author: The NINA Collaboration, Bakaldin, A., Galper, A., Koldashov, S., Korotkov, M., Leonov, A., Mikhailov, V., Murashov, A., Voronov, S., Bidoli, V., Casolino, M., De Pascale, M., Furano, G., Iannucci, A., Morselli, A., Picozza, P., Sparvoli, R., Boezio, M., Bonvicini, V., Cirami, R., Vacchi, A., Zampa, N., Ambriola, M., Bellotti, R., Cafagna, F., Ciacio, F., Circella, M., De Marzo, C., Adriani, O., Papini, P., Piccardi, S., Spillantini, P., Straulino, S., Vannuccini, E., Bartalucci, S., Ricci, M., and Castellini, G.
Subjects: Physics, Solar energetic particles, Astrophysics (astro-ph), FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Space (mathematics), Particle detector, Altitude, Space and Planetary Science, Particle, Polar, Satellite, Event (particle physics)
Abstract: This article reports nine Solar Energetic Particle events detected by the instrument NINA between October 1998 and April 1999. NINA is a silicon-based particle detector mounted on-board the Russian satellite Resurs-01-N4, which has flown at an altitude of about 800 km in polar inclination since July 1998. For every solar event the power-law He4 spectrum across the energy interval 10--50 MeV/n was reconstructed, and spectral indexes, gamma, from 1.8 to 6.8 extracted. Data of He3 and He4 were used to determine the He3/He4 ratio, that for some SEP events indicated an enrichment in He3. For the 1998 November 7 event the ratio reached a maximum value of 0.33+- 0.06, with spectral indexes of gamma = 2.5 +- 0.6 and gamma = 3.7 +- 0.3 for He3 and He4, respectively. The He3/He4 ratio averaged over the remaining events was 0.011 +- 0.004. For all events the deuterium-to-proton ratio was determined. The average value over all events was (3.9+-1.4) 10^{-5} across the energy interval 9--12 MeV/n. For one event (1998 November 24) this ratio yielded approximately 10 times higher than normal coronal values. Upper limits on the H3/H1 counting ratio for all events were determined. For the 1998 November 14 SEP event the high flux of heavy particles detected made it possible to reconstruct the carbon and oxygen flux., Comment: 42 pages, 14 figures, submitted to Journal of Geophysical Research
Published: 2001
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15. Positron anisotropy studies with PAMELA experiment

Author: Panico, B., Campana, D., Osteria, G., Barbarino, G. C., Scotti, V., Adriani, O., Bongi, M., Spillantini, P., Mori, N., Papini, P., Vannuccini, E., Bottai, S., Bazilevskaya, G. A., Kvashnin, A. N., Stozhkov, Y. I., Bellotti, R., Monaco, A., Bruno, A., Cafagna, F., Boezio, M., Bonvicini, V., Mocchiutti, E., Vacchi, A., Zampa, G., Zampa, N., Bogomolov, E. A., Krutkov, S. Y., Vasilyev, G. I., Carlson, P., Pearce, M., marco casolino, Castellini, G., Donato, C., Santis, C., Marcelli, L., Mergé, M., Palma, F., Picozza, P., Sparvoli, R., Simone, N., Di Felice, V., Formato, V., Munini, R., Galper, A. M., Karelin, A. V., Koldashov, S. V., Koldobskiy, S., Yurkin, Y. T., Malakhov, V., Leonov, A., Mayorov, A. G., Mikhailov, V. V., Voronov, S. A., Giaccari, U., Martucci, M., Menn, W., Simon, M., Ricci, M., Ricciarini, S. B., Panico, B., Campana, D., Osteria, G., Barbarino, G. C., Scotti, V., Adriani, O., Bongi, M., Spillantini, P., Mori, N., Papini, P., Vannuccini, E., Bottai, S., Bazilevskaya, G. A., Kvashnin, A. N., Stozhkov, Y. I., Bellotti, R., Monaco, A., Bruno, A., Cafagna, F., Boezio, M., Bonvicini, V., Mocchiutti, E., Vacchi, A., Zampa, G., Zampa, N., Bogomolov, E. A., Krutkov, S. Y., Vasilyev, G. I., Carlson, P., Pearce, M., Casolino, M., Castellini, G., De Donato, C., De Santis, C., Marcelli, L., Mergé, M., Palma, F., Picozza, P., Sparvoli, R., De Simone, N., Di Felice, V., Formato, V., Munini, R., Galper, A. M., Karelin, A. V., Koldashov, S. V., Koldobskiy, S., Yurkin, Y. T., Malakhov, V., Leonov, A., Mayorov, A. G., Mikhailov, V. V., Voronov, S. A., Giaccari, U., Martucci, M., Menn, W., Simon, M., Ricci, M., and Ricciarini, S. B.
Subjects: Nuclear physics, Physics, Positron, Multidisciplinary, Anisotropy
Abstract: The PAMELA experiment is collecting data since 2006; its results indicate the presence of a large flux of positrons respect to electrons in the cosmic ray spectrum above 10 GeV. This excess might also be originated in objects such as pulsars and microquasars or through dark matter annihilation. Here the electrons and positrons events collected by PAMELA have been analized searching for anisotropies.

16. Space travel: Dual origins of light flashes seen in space.

Author: Casolino, M., Bidoli, V., Morselli, A., Narici, L., De Pascale, M. P., Picozza, P., Reali, E., Sparvoli, R., Mazzenga, G., Ricci, M., Spillantini, P., Boezio, M., Bonvicini, V., Vacchi, A., Zampa, N., Castellini, G., Sannita, W. G., Carlson, P., and Galper, A.
Subjects: LIGHT, LIGHT sources, OPTICS, PHYSICS
Abstract: Light flashes are unusual visual phenomena that are observed in space and are caused by the interaction of energetic cosmic-ray particles with the human visual system. Using data gathered on board the Mir space station during the Sileye-2 experiment, we show here that there are two separate components of cosmic rays that cause these flashes: one due to heavy nuclei and one due to protons. This indicates that perception by an astronaut's visual apparatus could involve two complementary mechanisms. [ABSTRACT FROM AUTHOR]
Published: 2003
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17. CALOCUBE: An approach to high-granularity and homogenous calorimetry for space based detectors

Author: Anna Vedda, G. Castellini, M. Trimarchi, Paolo Brogi, P. Cumani, A. Rappoldi, Gabriele Bigongiari, A Lamberto, Mauro Fasoli, P. Spillantini, Maria Miritello, Eugenio Berti, Nicola Mori, B. Zerbo, S. Bottai, V. Bonvicini, G. Pauletta, A. Gregorio, Lucrezia Auditore, O. Adriani, S. Bonechi, Raffaello D'Alessandro, P. Lenzi, S. Detti, P. S. Marrocchesi, S. B. Ricciarini, A. Sulaj, M. Bongi, P. Papini, E. Vannuccini, Antonio Cassese, G.F. Rappazzo, N. Zampa, O. Starodubtsev, G. Carotenuto, Antonio Trifiro, A Mezzasalma, A. Tiberio, G. Zampa, Sebastiano Albergo, Maria Grazia Bagliesi, P. W. Cattaneo, Mirko Boezio, D. Cauz, Lorenzo Bonechi, Paolo Maestro, Bongi, M., Adriani, O., Albergo, S., Auditore, L., Bagliesi, M. G., Berti, E., Bigongiari, G., Boezio, M., Bonechi, L., Bonechi, S., Bonvicini, V., Bottai, S., Brogi, P., Carotenuto, G., Cassese, A., Castellini, G., Cattaneo, P. W., Cauz, D., Cumani, Paolo, D'Alessandro, R., Detti, S., Fasoli, M., Gregorio, Anna, Lamberto, A., Lenzi, P., Maestro, P., Marrocchesi, P. S., Mezzasalma, A., Miritello, M., Mori, N., Papini, P., Pauletta, G., Rappazzo, G. F., Rappoldi, A., Ricciarini, S., Spillantini, P., Starodubtsev, O., Sulaj, A., Tiberio, A., Trifirò, A., Trimarchi, M., Vannuccini, E., Vedda, A., Zampa, G., Zampa, N., Zerbo, B., Bongi, M, Adriani, O, Albergo, S, Auditore, L, Bagliesi, M, Berti, E, Bigongiari, G, Boezio, M, Bonechi, L, Bonechi, S, Bonvicini, V, Bottai, S, Brogi, P, Carotenuto, G, Cassese, A, Castellini, G, Cattaneo, P, Cauz, D, Cumani, P, D'Alessandro, R, Detti, S, Fasoli, M, Gregorio, A, Lamberto, A, Lenzi, P, Maestro, P, Marrocchesi, P, Mezzasalma, A, Miritello, M, Mori, N, Papini, P, Pauletta, G, Rappazzo, G, Rappoldi, A, Ricciarini, S, Spillantini, P, Starodubtsev, O, Sulaj, A, Tiberio, A, Trifirò, A, Trimarchi, M, Vannuccini, E, Vedda, A, Zampa, G, Zampa, N, and Zerbo, B
Subjects: History, Physics::Instrumentation and Detectors, Gamma ray, Interaction length, Budget control, Geometry, Electromagnetic particle, FIS/07 - FISICA APPLICATA (A BENI CULTURALI, AMBIENTALI, BIOLOGIA E MEDICINA), Calorimetry, Particle detector, Radiation length, Particle identification, Education, Physics and Astronomy (all), Cesium iodide, Optics, Gamma rays, Particles (particulate matter) Absorption depths, Energy resolutions, Geometrical dimensions, Radiation lengths, Space experiments, Space-based detector, Energy resolution, High energy physics, Detectors and Experimental Techniques, Physics, Calorimeter, Spectrometer, Calorimeter (particle physics), business.industry, Space experiment, Computer Science Applications, Computational physics, Measuring instrument, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, Particles (particulate matter) Absorption depth, Geometrical dimension, Granularity, business
Abstract: Future space experiments dedicated to the observation of high-energy gamma and cosmic rays will increasingly rely on a highly performing calorimetry apparatus, and their physics performance will be primarily determined by the geometrical dimensions and the energy resolution of the calorimeter deployed. Thus it is extremely important to optimize its geometrical acceptance, the granularity, and its absorption depth for the measurement of the particle energy with respect to the total mass of the apparatus which is the most important constraint for a space launch. The proposed design tries to satisfy these criteria while staying within a total mass budget of about 1.6 tons. Calocube is a homogeneous calorimeter instrumented with Cesium iodide (CsI) crystals, whose geometry is cubic and isotropic, so as to detect particles arriving from every direction in space, thus maximizing the acceptance, granularity is obtained by filling the cubic volume with small cubic CsI crystals. The total radiation length in any direction is more than adequate for optimal electromagnetic particle identification and energy measurement, whilst the interaction length is at least suficient to allow a precise reconstruction of hadronic showers. Optimal values for the size of the crystals and spacing among them have been studied. The design forms the basis of a three-year R&D; activity which has been approved and financed by INFN. An overall description of the system, as well as results from preliminary tests on particle beams will be described.
Published: 2015

18. The GAPS Instrument: A Large Area Time of Flight and High Resolution Exotic Atom Spectrometer for Cosmic Antinuclei

Author: T. Aramaki, R. Bird, M. Boezio, S. E. Boggs, V. Bonvicini, D. Campana, W. W. Craig, E. Everson, L. Fabris, H. Fuke, F. Gahbauer, I. Garcia, C. Gerrity, C. J. Hailey, T. Hayashi, C. Kato, A. Kawachi, S. Kobayashi, M. Kozai, A. Lenni, A. Lowell, M. Manghisoni, N. Marcelli, B. Mochizuki, S. A. I. Mognet, K. Munakata, R. Munini, Y. Nakagami, J. Olson, R. A. Ong, G. Osteria, K. Perez, S. Quinn, V. Re, E. Riceputi, B. Roach, F. Rogers, J. A. Ryan, N. Saffold, V. Scotti, Y. Shimizu, M. Sonzogni, R. Sparvoli, A. Stoessl, A. Tiberio, E. Vannuccini, P. von Doetinchem, T. Wada, M. Xiao, M. Yamatani, A. Yoshida, T. Yoshida, G. Zampa, J. Zweerink, Aramaki, T., Bird, R., Boezio, M., Boggs, S. E., Bonvicini, V., Campana, D., Craig, W. W., Everson, E., Fabris, L., Fuke, H., Gahbauer, F., Garcia, I., Gerrity, C., Hailey, C. J., Hayashi, T., Kato, C., Kawachi, A., Kobayashi, S., Kozai, M., Lenni, A., Lowell, A., Manghisoni, M., Marcelli, N., Mochizuki, B., Mognet, S. A. I., Munakata, K., Munini, R., Nakagami, Y., Olson, J., Ong, R. A., Osteria, G., Perez, K., Quinn, S., Re, V., Riceputi, E., Roach, B., Rogers, F., Ryan, J. A., Saffold, N., Scotti, V., Shimizu, Y., Sonzogni, M., Sparvoli, R., Stoessl, A., Tiberio, A., Vannuccini, E., von Doetinchem, P., Wada, T., Xiao, M., Yamatani, M., Yoshida, A., Yoshida, T., Zampa, G., and Zweerink, J.
Subjects: Physics, Antiparticle, COSMIC cancer database, Spectrometer, Dark matter, GAPS, large-area Time-of-Flight, high-resolution exotic-atom spectrometer, cosmic-ray antinuclei, Cosmic ray, Scintillator, Nuclear physics, Antiproton, high-resolution exotic-atom spectrometer, large-area Time-of-Flight, Exotic atom
Abstract: Low-energy cosmic ray antideuterons ($
Published: 2022

19. Study of the solar modulation for the cosmic ray isotopes with the PAMELA experiment

Author: Marius Potgieter, Driaan Bisschoff, Alex Lenni, Nadir Marcelli, Mirko Boezio, Mabedle Donald Ngobeni, Riccardo Munini, O. P. M. Aslam, Wolfgang Menn, Lenni, A., Boezio, M., Munini, R., Menn, W., Marcelli, N., Potgieter, M., Bisschoff, D., Ngobeni, M. D., and Aslam, O. P. M.
Subjects: Physics, Solar minimum, Proton, Cosmic rays, istopes, solar modulation, PAMELA, Astrophysics::High Energy Astrophysical Phenomena, chemistry.chemical_element, Cosmic ray, Astrophysics, Electron, istope, Solar maximum, Positron, chemistry, Physics::Space Physics, Heliosphere, Helium
Abstract: The space-borne PAMELA experiment was launched on the 15th June 2006 on board the Russian satellite Resurs-DK1 from the Baikonur cosmodrome. From the beginning PAMELA performed high-precision measurements of cosmic rays over a wide energy range until January 2016. Owing to its long-duration operation, PAMELA had turned out to be an optimal detecting apparatus for studies of the solar modulation of cosmic rays over time. The PAMELA collaboration has already published time-dependent proton, helium and electron spectra as well as the positron to electron ratio over ten years of data. These results are fundamentally important in the fine-tuning of propagation and modulation models of cosmic rays through the Heliosphere.\\ In this talk, the yearly average spectra for proton, deuteron, Helium-3 and Helium-4 nuclei are presented for the 23rd solar minimum (July 2006 - January 2009) and the first part of the 24th solar maximum (until September 2014). The isotopic composition was measured between 0.1 and 1.1 GeV/n using two different detector systems. As expected, the measured spectra display a rising trend towards solar minimum followed by a decreasing trend, which has continued as solar maximum approached. The subsequent time-dependent ratio of these isotopes is also presented.\\ According to solar modulation studies, a non-constant ratio is expected due to the different charge-to-mass ratios (and therefore the appropriate rigidities) and the different shapes of the respective local interstellar spectra. Additionally, it is of interest to analyze the observed spectra with state-of-the-art solar modulation models to obtain a deeper understanding of the relative importance of the mechanisms responsible for the propagation of cosmic rays in the Heliosphere over time.
Published: 2022

20. Cosmic Antiproton Sensitivity for the GAPS Experiment

Author: Field Rogers, T Aramaki, R Bird, T. Aramaki, R. Bird, M. Boezio, S. E. Boggs, V. Bonvicini, D. Campana, W. W. Craig, E. Everson, L. Fabris, H. Fuke, F. Gahbauer, I. Garcia, C. Gerrity, C. J. Hailey, T. Hayashi, C. Kato, A. Kawachi, S. Kobayashi, M. Kozai, A. Lenni, A. Lowell, M. Manghisoni, N. Marcelli, B. Mochizuki, S. A. I. Mognet, K. Munakata, R. Munini, Y. Nakagami, J. Olson, R. A. Ong, G. Osteria, K. Perez, S. Quinn, V. Re, E. Riceputi, B. Roach, J. A. Ryan, N. Saffold, V. Scotti, Y. Shimizu, M. Sonzogni, R. Sparvoli, A. Stoessl, A. Tiberio, E. Vannuccini, P. von Doetinchem, T. Wada, M. Xiao, M. Yamatani, A. Yoshida, T. Yoshida, G. Zampa, J. Zweerink, Aramaki, T., Bird, R., Boezio, M., Boggs, S. E., Bonvicini, V., Campana, D., Craig, W. W., Everson, E., Fabris, L., Fuke, H., Gahbauer, F., Garcia, I., Gerrity, C., Hailey, C. J., Hayashi, T., Kato, C., Kawachi, A., Kobayashi, S., Kozai, M., Lenni, A., Lowell, A., Manghisoni, M., Marcelli, N., Mochizuki, B., Mognet, S. A. I., Munakata, K., Munini, R., Nakagami, Y., Olson, J., Ong, R. A., Osteria, G., Perez, K., Quinn, S., Re, V., Riceputi, E., Roach, B., Rogers, F., Ryan, J. A., Saffold, N., Scotti, V., Shimizu, Y., Sonzogni, M., Sparvoli, R., Stoessl, A., Tiberio, A., Vannuccini, E., von Doetinchem, P., Wada, T., Xiao, M., Yamatani, M., Yoshida, A., Yoshida, T., Zampa, G., and Zweerink, J.
Subjects: Physics, Antiparticle, COSMIC cancer database, Spectrometer, Dark matter, Cosmic ray, Particle identification, Nuclear physics, cosmic rays, Antiproton, GAPS, antiproton sensitivity, Nuclear Experiment, cosmic ray, Exotic atom
Abstract: The General Antiparticle Spectrometer (GAPS) experiment is a balloon payload designed to measure low-energy cosmic antinuclei during at least three $\sim$35-day Antarctic flights, with the first flight planned for December, 2022. With its large geometric acceptance and novel exotic atom-based particle identification method, GAPS will detect $\sim$1000 antiprotons per flight, producing a precision cosmic antiproton spectrum in the kinetic energy range of $0.03 - 0.23$ GeV/$n$ at float altitude (corresponding to $0.085- 0.30$ GeV/$n$ at the top of the atmosphere). With these high statistics in a measurement extending to lower energy than any previous experiment, and with orthogonal sources of systematic uncertainty compared to measurements made using traditional magnetic spectrometer techniques, the GAPS antiproton measurement will be sensitive to physics including dark matter annihilation, primordial black hole evaporation, and cosmic ray propagation. The antiproton measurement will also validate the GAPS exotic atom technique for the antideuteron and antihelium rare-event searches and provide insight into models of cosmic particle attenuation and production in the atmosphere. This contribution demonstrates the GAPS sensitivity to antiprotons using a full instrument simulation, event reconstruction, and solar and atmospheric effects.
Published: 2021

21. In Search of Cosmic-Ray Antinuclei from Dark Matter with the GAPS Experiment

Author: T. Aramaki, R. Bird, M. Boezio, S. E. Boggs, V. Bonvicini, D. Campana, W. W. Craig, E. Everson, L. Fabris, H. Fuke, F. Gahbauer, I. Garcia, C. Gerrity, C. J. Hailey, T. Hayashi, C. Kato, A. Kawachi, S. Kobayashi, M. Kozai, A. Lenni, A. Lowell, M. Manghisoni, N. Marcelli, B. Mochizuki, S. A. I. Mognet, K. Munakata, R. Munini, Y. Nakagami, J. Olson, R. A. Ong, G. Osteria, K. Perez, S. Quinn, V. Re, E. Riceputi, B. Roach, F. Rogers, J. A. Ryan, N. Saffold, V. Scotti, Y. Shimizu, M. Sonzogni, R. Sparvoli, A. Stoessl, A. Tiberio, E. Vannuccini, P. von Doetinchem, T. Wada, M. Xiao, M. Yamatani, A. Yoshida, T. Yoshida, G. Zampa, J. Zweerink, Aramaki, T., Bird, R., Boezio, M., Boggs, S. E., Bonvicini, V., Campana, D., Craig, W. W., Everson, E., Fabris, L., Fuke, H., Gahbauer, F., Garcia, I., Gerrity, C., Hailey, C. J., Hayashi, T., Kato, C., Kawachi, A., Kobayashi, S., Kozai, M., Lenni, A., Lowell, A., Manghisoni, M., Marcelli, N., Mochizuki, B., Mognet, S. A. I., Munakata, K., Munini, R., Nakagami, Y., Olson, J., Ong, R. A., Osteria, G., Perez, K., Quinn, S., Re, V., Riceputi, E., Roach, B., Rogers, F., Ryan, J. A., Saffold, N., Scotti, V., Shimizu, Y., Sonzogni, M., Sparvoli, R., Stoessl, A., Tiberio, A., Vannuccini, E., von Doetinchem, P., Wada, T., Xiao, M., Yamatani, M., Yoshida, A., Yoshida, T., Zampa, G., and Zweerink, J.
Subjects: Physics, GAPS, cosmic-ray antinuclei, dark-matter search, Dark matter, Cosmic ray, Astrophysics
Abstract: The General Antiparticle Spectrometer (GAPS) is the first experiment optimized to identify low energy (
Published: 2021

22. The antinucleus annihilation reconstruction algorithm of the GAPS experiment

Author: Mirko Boezio, Nadir Marcelli, S. Quinn, A. Tiberio, C. Gerrity, F. Rogers, Meng Xiao, A. Lenni, A. Stoessl, M. Yamatani, E. Vannuccini, J.L. Ryan, P. von Doetinchem, Riccardo Munini, N. Saffold, Munini, R., Vannuccini, E., Boezio, M., von Doetinchem, P., Gerrity, C., Lenni, A., Marcelli, N., Quinn, S., Rogers, F., Ryan, J. L., Stoessl, A., Xiao, M., Saffold, N., Tiberio, A., and Yamatani, M.
Subjects: Antiparticle, Physics - Instrumentation and Detectors, Dark matter, Annihilation, FOS: Physical sciences, Cosmic-rays, 01 natural sciences, Particle identification, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Exotic atom, Physics, Cosmic-ray, 010308 nuclear & particles physics, Detector, Astronomy and Astrophysics, Reconstruction algorithm, Instrumentation and Detectors (physics.ins-det), Charged particle, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: The General AntiParticle Spectrometer (GAPS) is an Antarctic balloon-borne detector designed to measure low-energy cosmic antinuclei ( 0 . 25 GeV/ n ), with a specific focus on antideuterons, as a distinctive signal from dark matter annihilation or decay in the Galactic halo. The instrument consists of a tracker, made up of ten planes of lithium-drifted Silicon Si(Li) detectors, surrounded by a plastic scintillator Time-of-Flight system. GAPS uses a novel particle identification method based on exotic atom capture and decay with the emission of pions, protons, and atomic X-rays from a common annihilation vertex. An important ingredient for the antinuclei identification is the reconstruction of the “annihilation star” topology. A custom antinucleus annihilation reconstruction algorithm, called the “star-finding” algorithm, was developed to reconstruct the annihilation star fully, determining the annihilation vertex position and reconstructing the tracks of the primary and secondary charged particles. The reconstruction algorithm and its performances were studied on simulated data obtained with the Geant4 -based GAPS simulation software, which fully reproduced the detector geometry. This custom algorithm was found to have better performance in the vertex resolution and reconstruction efficiency compared with a standard Hough-3D algorithm.
Published: 2021
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23. Solar-cycle Variations of South Atlantic Anomaly Proton Intensities Measured with the PAMELA Mission

Author: E. Vannuccini, E. A. Bogomolov, E. Mocchiutti, C. De Santis, Sergey Koldobskiy, M. Merge, V. V. Mikhailov, Sergey Koldashov, B. Panico, Gianluigi Zampa, Alessandro Sotgiu, N. Zampa, Giancarlo Barbarino, M. Martucci, Andrea Vacchi, Roberta Sparvoli, Alexey Leonov, G. Vasilyev, Michal Simon, M. Ricci, L. Marcelli, Paolo Papini, G. Osteria, Alfonso Monaco, V. V. Malakhov, Nicola Mori, G. A. Bazilevskaya, N. Marcelli, Mirko Boezio, Massimo Bongi, A. G. Mayorov, Roberto Bellotti, A. M. Galper, A. N. Kvashnin, T. R. Zharaspayev, Per Carlson, F. Cafagna, A. Bruno, O. Adriani, W. Menn, A. Lenni, G. Castellini, Yuri Stozhkov, Y. T. Yurkin, P. Spillantini, R. Munini, S. B. Ricciarini, S. A. Voronov, V. Bonvicini, Mark Pearce, D. Campana, P. Picozza, Marco Casolino, Bruno, A., Martucci, M., Cafagna, F. S., Sparvoli, R., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Campana, D., Carlson, P., Casolino, M., Castellini, G., De Santis, C., Galper, A. M., Koldashov, S. V., Koldobskiy, S., Kvashnin, A. N., Lenni, A., Leonov, A. A., Malakhov, V. V., Marcelli, L., Marcelli, N., Mayorov, A. G., Menn, W., Merg, M., Mocchiutti, E., Monaco, A., Mori, N., Mikhailov, V. V., Munini, R., Osteria, G., Panico, B., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Simon, M., Sotgiu, A., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Yurkin, Y. T., Zampa, G., Zampa, N., and Zharaspayev, T. R.
Subjects: Proton, Van Allen radiation belts, Phase (waves), FOS: Physical sciences, Astrophysics, symbols.namesake, Physics - Space Physics, Particle radiation, Cosmic rays, Solar and Stellar Astrophysics (astro-ph.SR), Physics, Settore FIS/01, Astronomy and Astrophysics, Cosmic rays, Van Allen radiation belts, Space Physics (physics.space-ph), Solar cycle, South Atlantic Anomaly, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, Van Allen radiation belt, Antimatter, Physics::Space Physics, symbols, Astrophysics::Earth and Planetary Astrophysics, Intensity (heat transfer)
Abstract: We present a study of the solar-cycle variations of >80 MeV proton flux intensities in the lower edge of the inner radiation belt, based on the measurements of the Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics (PAMELA) mission. The analyzed data sample covers an ~8 year interval from 2006 July to 2014 September, thus spanning from the decaying phase of the 23rd solar cycle to the maximum of the 24th cycle. We explored the intensity temporal variations as a function of drift shell and proton energy, also providing an explicit investigation of the solar-modulation effects at different equatorial pitch angles. PAMELA observations offer new important constraints for the modeling of low-altitude particle radiation environment at the highest trapping energies., accepted for publication in the Astrophysical Journal Letters
Published: 2021

24. East-West Proton Flux Anisotropy Observed with the PAMELA Mission

Author: G. Zampa, Beatrice Panico, Mark Pearce, S. B. Ricciarini, G. Castellini, Mirko Boezio, André Monaco, P. Papini, E. Vannuccini, G. Osteria, Sergey Koldobskiy, G. I. Vasilyev, G. C. Barbarino, A. G. Mayorov, A. Lenni, L. Marcelli, A. Vacchi, A. Bruno, V. V. Malakhov, Nicola Mori, P. Picozza, A. M. Galper, P. Spillantini, S. A. Voronov, O. Adriani, A. N. Kvashnin, W. Menn, E. A. Bogomolov, C. De Santis, M. Simon, A. A. Leonov, Riccardo Munini, N. Marcelli, M. Bongi, Y. T. Yurkin, Matteo Martucci, Roberto Bellotti, V. V. Mikhailov, P. Carlson, Alessandro Sotgiu, F. Cafagna, S. V. Koldashov, Marco Ricci, E. Mocchiutti, N. Zampa, V. Bonvicini, Y. I. Stozhkov, G. A. Bazilevskaya, R. Sparvoli, M. Merge, D. Campana, Marco Casolino, Bruno, A., Martucci, M., Cafagna, F. S., Sparvoli, R., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Campana, D., Carlson, P., Casolino, M., Castellini, G., Santis, C. D., Galper, A. M., Koldashov, S. V., Koldobskiy, S., Kvashnin, A. N., Lenni, A., Leonov, A. A., Malakhov, V. V., Marcelli, L., Marcelli, N., Mayorov, A. G., Menn, W., Merge, M., Mocchiutti, E., Monaco, A., Mori, N., Mikhailov, V. V., Munini, R., Osteria, G., Panico, B., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Simon, M., Sotgiu, A., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Yurkin, Y. T., Zampa, G., and Zampa, N.
Subjects: Physics, Nuclear physics, Space and Planetary Science, East west, Astronomy and Astrophysics, Proton flux, Anisotropy
Abstract: We present a study of the east-west anisotropy of trapped-proton fluxes in low-Earth orbit based on the measurements of the Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics (PAMELA) experiment. The differential intensities of eastward- and westward-traveling protons detected in the South Atlantic Anomaly region were estimated as a function of equatorial pitch angle and drift shell, for six energy bins between 80 MeV and 2 GeV. We found that, as a consequence of the strong atmospheric gradient coupled with the large gyroradius in this energy range, the intensities of eastward fluxes exceed those of westward fluxes by a factor of ∼10-20. However, the reported directional asymmetry also depends on the sign of the local flux gradient, resulting in more intense westward fluxes beyond the radial distances where the inner belt peaks. PAMELA observations can be used to improve the description of the near-Earth radiation environment at lowest altitudes and highest trapping energies, where current theoretical and empirical models are affected by the largest uncertainties.
Published: 2021

25. Time dependence of the flux of helium nuclei in cosmic rays measured by the pamela experiment between 2006 july and 2009 december

Author: A. N. Kvashnin, M. Simon, Mark Pearce, S. B. Ricciarini, Per Carlson, N. Marcelli, P. Papini, E. Vannuccini, O. Adriani, W. Menn, M. D. Ngobeni, F. Cafagna, Sergey Koldobskiy, G. C. Barbarino, V. Bonvicini, Y. I. Stozhkov, N. Zampa, G. A. Bazilevskaya, Andrea Vacchi, P. Spillantini, V. V. Mikhailov, E. Mocchiutti, V. V. Malakhov, M. Bongi, Alfonso Monaco, Alessandro Sotgiu, R. Sparvoli, G. Osteria, A. Bruno, M. Merge, O. P. M. Aslam, Matteo Martucci, S. A. Voronov, Roberto Bellotti, S. V. Koldashov, E. A. Bogomolov, A. M. Galper, Marco Ricci, A. Lenni, D. Campana, G. I. Vasilyev, Marco Casolino, C. De Santis, Alexey Leonov, Y. T. Yurkin, Driaan Bisschoff, Riccardo Munini, Nicola Mori, L. Marcelli, A. G. Mayorov, G. Castellini, M. S. Potgieter, G. Zampa, Beatrice Panico, P. Picozza, Mirko Boezio, Marcelli, N., Boezio, M., Lenni, A., Menn, W., Munini, R., Aslam, O. P. M., Bisschoff, D., Ngobeni, M. D., Potgieter, M. S., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Bogomolov, E. A., Bongi, M., Bonvicini, V., Bruno, A., Cafagna, F., Campana, D., Carlson, P., Casolino, M., Castellini, G., De Santis, C., Galper, A. M., Koldashov, S. V., Koldobskiy, S., Kvashnin, A. N., Leonov, A. A., Malakhov, V. V., Marcelli, L., Martucci, M., Mayorov, A. G., Merg, M., Mocchiutti, E., Monaco, A., Mori, N., Mikhailov, V. V., Osteria, G., Panico, B., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Simon, M., Sotgiu, A., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Yurkin, Y. T., Zampa, G., Zampa, N., 10060014 - Potgieter, Marthinus Steenkamp, 13161229 - Ngobeni, Mabedle Donald, and 20056950 - Bisschoff, Driaan
Subjects: 010504 meteorology & atmospheric sciences, Astrophysics::High Energy Astrophysical Phenomena, chemistry.chemical_element, Flux, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Galactic cosmic rays, 01 natural sciences, Galactic cosmic ray, Heliosphere, Cosmic ray detectors, 0103 physical sciences, 010303 astronomy & astrophysics, Helium, 0105 earth and related environmental sciences, Physics, Settore FIS/01, DARK MATTER, Astronomy and Astrophysics, COSMIC RAYS, Charged particle, ANTIPROTONS, chemistry, Space and Planetary Science, Physics::Space Physics, Cosmic ray detector
Abstract: Precise time-dependent measurements of the Z = 2 component in the cosmic radiation provide crucial information about the propagation of charged particles through the heliosphere. The PAMELA experiment, with its long flight duration (2006 June 15-2016 January 23) and the low energy threshold (80 MeV/n) is an ideal detector for cosmic-ray solar modulation studies. In this paper, the helium nuclei spectra measured by the PAMELA instrument from 2006 July to 2009 December over a Carrington rotation time basis are presented. A state-of-the-art three-dimensional model for cosmic-ray propagation inside the heliosphere was used to interpret the time-dependent measured fluxes. Proton-to-helium flux ratio time profiles at various rigidities are also presented in order to study any features that could result from the different masses and local interstellar spectra shapes.
Published: 2020

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

Author: Alfonso Monaco, C. De Santis, R. Sparvoli, Roberto Bellotti, A. M. Galper, M. Merge, Yu. T. Yurkin, G. A. Bazilevskaya, A. N. Kvashnin, S. Bottai, V. Di Felice, Per Carlson, M. Bongi, F. Cafagna, G. Castellini, Sergey Koldashov, Alexey Leonov, Matteo Martucci, V. Bonvicini, V. V. Malakhov, Andrea Vacchi, E. A. Bogomolov, N. Zampa, D. Campana, L. Marcelli, M. Simon, Yuri Stozhkov, Mark Pearce, S. B. Ricciarini, O. Adriani, A. Bruno, Marco Casolino, Sergey Koldobskiy, A. V. Karelin, Marco Ricci, W. Menn, M. F. Runtso, G. C. Barbarino, Riccardo Munini, S. A. Voronov, P. Spillantini, P. Papini, Nicola Mori, A. G. Mayorov, E. Vannuccini, S. Y. Krutkov, G. Zampa, Beatrice Panico, G. Osteria, P. Picozza, G. I. Vasilyev, E. Mocchiutti, V. V. Mikhailov, Mirko Boezio, A. A. Kvashnin, Bogomolov, E. A., Adriani, O., Bazilevskaya, G. A., Barbarino, G. C., Bellotti, R., Boezio, M., Bonvicini, V., Bongi, M., Bottai, S., Bruno, A., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Galper, A. M., De Santis, C., Di Felice, V., Zampa, G., Zampa, N., Casolino, M., Campana, D., Karelin, A. V., Carlson, P., Castellini, G., Cafagna, F., Kvashnin, A. A., Kvashnin, A. N., Koldashov, S. V., Koldobskiy, S. A., Krutkov, S. Y., Leonov, A. A., Mayorov, A. G., Malakhov, V. V., Martucci, M., Marcelli, L., Menn, W., Merge, M., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Panico, B., Papini, P., Picozza, P., Pearce, M., Ricci, M., Ricciarini, S. B., Runtso, M. F., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., and Yurkin, Y. T.
Subjects: Physics Solar flare, Solar neutrons, Space experiments: Neutrons, 010504 meteorology & atmospheric sciences, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Hadron, General Physics and Astronomy, Flux, Astrophysics, 01 natural sciences, Spectral line, law.invention, Nuclear physics, Physics and Astronomy (all), Space experiment, law, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, Neutron detection, Neutron, Nuclear Experiment, 010303 astronomy & astrophysics, 0105 earth and related environmental sciences, Settore FIS/01, Physics, Solar flare, Physics::Space Physics, Flare
Abstract: The first results from measuring the spectra of solar neutrons with energies of ~10-1000 MeV in the solar flares of 2006-2015 observed by the PAMELA international space experiment are presented. The PAMELA neutron detector with 3He counters and a moderator with an area of 0.18 m2 allows us to estimate the flux of solar neutrons during solar flares. Solar neutrons with energies of ~10-1000 MeV likely occurred in 21 out of the 24 analyzed flares of 2006-2015. © 2017, Allerton Press, Inc.
Published: 2017

27. Galactic Cosmic Ray Electrons and Positrons over a Decade of Observations in the PAMELA Experiment

Author: M. Bongi, P. Spillantini, M. Simon, Alfonso Monaco, V. Di Felice, E. Mocchiutti, Matteo Martucci, G. A. Bazilevskaya, N. Zampa, G. Zampa, Beatrice Panico, D. Campana, Yu. I. Stozhkov, O. Adriani, V. Bonvicini, Alexey Leonov, V. V. Mikhailov, P. Carlson, V. V. Malakhov, S. V. Koldashov, Marco Ricci, A. V. Karelin, L. Marcelli, Marco Casolino, A. G. Mayorov, M. F. Runtso, Riccardo Munini, S. A. Voronov, Sergey Koldobskiy, Mark Pearce, S. B. Ricciarini, C. De Santis, A. Bruno, M. Merge, G. C. Barbarino, W. Menn, Yu. T. Yurkin, R. Sparvoli, P. Picozza, G. Osteria, F. Cafagna, P. Papini, E. A. Bogomolov, Mirko Boezio, E. Vannuccini, A. A. Kvashnin, Andrea Vacchi, G. Castellini, Roberto Bellotti, A. M. Galper, G. I. Vasilyev, Nicola Mori, A. N. Kvashnin, S. Yu. Krutkov, Mikhailov, V. V., Adriani, O., Bazilevskaya, G. A., Barbarino, G. C., Bellotti, R., Bogomolov, E. A., Boezio, M., Bonvicini, V., Bongi, M., Bruno, A., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Galper, A. M., De Santis, C., Di Felice, V., Zampa, G., Zampa, N., Casolino, M., Campana, D., Karelin, A. V., Carlson, P., Castellini, G., Cafagna, F., Kvashnin, A. A., Kvashnin, A. N., Koldashov, S. V., Koldobskiy, S. A., Krutkov, S. Y., Leonov, A. A., Mayorov, A. G., Malakhov, V. V., Martucci, M., Marcelli, L., Menn, W., Merge, M., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Panico, B., Papini, P., Picozza, P., Pearce, M., Ricci, M., Ricciarini, S. B., Runtso, M. F., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., and Yurkin, Y. T.
Subjects: 010302 applied physics, Physics, Settore FIS/01, Earth's orbit, Range (particle radiation), Antiparticle, Spectrometer, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, General Physics and Astronomy, Astronomy, Cosmic ray, Electron, Cosmic-ray particles, 01 natural sciences, Cosmology, Magnetic spectrometers, Positrons, Positron, Physics::Space Physics, 0103 physical sciences, Satellite, Nuclear Experiment
Abstract: The PAMELA magnetic spectrometer was launched onboard the Resurs-DK1 satellite into a near-polar Earth orbit with an altitude of 350-600 km, in order to study fluxes of cosmic ray particles and antiparticles in the wide energy range of ~80 MeV to hundreds of GeV. The results from observations of electron and positron fluxes in 2006-2016 are presented.
Published: 2019

28. Cosmic ray electrons and positrons over decade with the PAMELA experiment

Author: P. Spillantini, O. Adriani, W. Menn, F. Cafagna, V. Bonvicini, A. Bruno, S. Yu. Krutkov, Yu. I. Stozhkov, M. Bongi, M. Merge, L. Marcelli, Maria Teresa Ricci, A. Vacchi, V. V. Mikhailov, S. V. Koldashov, P. Carlson, S. O. Kleymenova, Sergey Koldobskiy, Riccardo Munini, G. C. Barbarino, G. A. Bazilevskaya, D. Campana, C. De Santis, André Monaco, Marco Casolino, G. Zampa, Beatrice Panico, M. Simon, P. Picozza, Yu. T. Yurkin, V. Di Felice, Mark Pearce, S. B. Ricciarini, N. Zampa, V. V. Malakhov, Mirko Boezio, P. Papini, Alexey Leonov, E. Vannuccini, G. I. Vasiliev, R. Sparvoli, Nicola Mori, Roberto Bellotti, A. N. Kvashnin, Matteo Martucci, A. M. Galper, E. Mocchiutti, A. V. Karelin, S. A. Voronov, G. Castellini, A. G. Mayorova, E. A. Bogomolov, G. Osteria, Mikhailov, V. V., Adriani, O., Barbarino, G., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Bruno, A., Cafagna, F. S., Campana, D., Carlson, P., Casolino, M., Castellini, G., De Santis, C., Di Felice, V., Galper, A. M., Karelin, A. V., Kleymenova, S. O., Koldashov, S. V., Koldobskiy, S., Krutkov, S. Y., Kvashnin, A. N., Leonov, A. A., Malakhov, V. V., Marcelli, L., Martucci, M., Mayorova, A. G., Menn, W., Merge, M., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Papini, P., Panico, B., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasiliev, G. I., Voronov, S. A., Yurkin, Y. T., Zampa, G., and Zampa, N.
Subjects: Physics, History, Earth's orbit, Antiparticle, Settore FIS/04, Astrophysics::High Energy Astrophysical Phenomena, Astronomy, Cosmic ray, COSMIC RAYS, Electron, Computer Science Applications, Education, SOLAR MINIMA, Positron, Physics::Space Physics, Satellite, WIDE ENERGY RANGE
Abstract: The PAMELA experiment has measured cosmic ray particles and antiparticles fluxes at Earth orbit from June 2006 till January 2016 onboard the Resurs-DK1 satellite. Measurements were carried out during the solar minimum of 23 solar cycle with negative polarity A < 0 of heliospheric magnetic field till the beginning of 24 cycle with positive polarity A > 0. In this paper, the results of observations of electron and positron fluxes are presented in wide energy range from several hundreds MeVs till several TeVs These measurements provide important information to study cosmic ray sources and propagation in Galaxy and heliosphere.
Published: 2019

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

Author: A. G. Mayorov, Alfonso Monaco, S. Y. Krutkov, D. Campana, Alexey Leonov, Matteo Martucci, M. Merge, Marco Casolino, Sergey Koldobskiy, Yu. T. Yurkin, G. C. Barbarino, M. Bongi, N. Zampa, V. Bonvicini, P. Picozza, G. Zampa, Beatrice Panico, L. Marcelli, Andrea Vacchi, E. Mocchiutti, V. Di Felice, A. Bruno, A. A. Kvashnin, M. F. Runtso, S. A. Voronov, Sergey Koldashov, M. Simon, Mirko Boezio, Riccardo Munini, A. V. Karelin, Yuri Stozhkov, V. V. Malakhov, O. Adriani, W. Menn, G. A. Bazilevskaya, G. Osteria, P. Spillantini, S. Bottai, G. Castellini, Roberto Bellotti, A. M. Galper, E. A. Bogomolov, Marco Ricci, A. N. Kvashnin, Mark Pearce, S. B. Ricciarini, P. Papini, E. Vannuccini, G. I. Vasilyev, Nicola Mori, C. De Santis, V. V. Mikhailov, R. Sparvoli, Per Carlson, F. Cafagna, Mikhailov, V. V., Adriani, O., Bazilevskaya, G. A., Barbarino, G. C., Bellotti, R., Bogomolov, E. A., Boezio, M., Bonvicini, V., Bongi, M., Bottai, S., Bruno, A., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Galper, A. M., De Santis, C., Di Felice, V., Zampa, G., Zampa, N., Casolino, M., Campana, D., Karelin, A. V., Carlson, P., Castellini, G., Cafagna, F., Kvashnin, A. A., Kvashnin, A. N., Koldashov, S. V., Koldobskiy, S. A., Krutkov, S. Y., Leonov, A. A., Mayorov, A. G., Malakhov, V. V., Martucci, M., Marcelli, L., Menn, W., Merge, M., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Panico, B., Papini, P., Picozza, P., Pearce, M., Ricci, M., Ricciarini, S. B., Runtso, M. F., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., and Yurkin, Y. T.
Subjects: Settore FIS/01, Physics, PAMELA detector, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, Magnetosphere, Cosmic ray, Astrophysics, Electron, 01 natural sciences, law.invention, Atmosphere, Physics and Astronomy (all), symbols.namesake, Atmosphere of Earth, Positron, law, Van Allen radiation belt, Physics::Space Physics, 0103 physical sciences, symbols, Cosmology, Earth (planet), Earth atmosphere, Orbits, Positrons, Radiation belts Different mechanisms, Electron flux, Magnetic spectrometers, Near-earth spaces, Secondary particles, Trapped particle, Astrophysics::Earth and Planetary Astrophysics, 010306 general physics
Abstract: Fluxes of electrons and positrons with energies above ~100 MeV in the near-Earth space are measured with the PAMELA magnetic spectrometer aboard the Resurs DK-1 satellite launched on June 15, 2006, into a quasipolar orbit with an altitude of 350–600 km and an inclination of 70°. Calculating the trajectories of detected electrons and positrons in the magnetosphere of the Earth allows us to determine their origin and isolate particles produced during interaction between cosmic rays and the residual atmosphere. Spatial distributions of albedo, quasitrapped, and trapped (in the radiation belt) positrons and electrons are presented. The ratio of positron and electron fluxes suggests that the fluxes of trapped particles of the radiation belt and quasitrapped secondary particles have different mechanisms of formation.
Published: 2017

30. Evidence of energy and charge sign dependence of the recovery time for the December 2006 Forbush event measured by the PAMELA experiment

Author: D. Campana, Ian G. Richardson, Sergey Koldashov, Marco Casolino, Yu. T. Yurkin, A. V. Karelin, S. Y. Krutkov, Mark Pearce, S. B. Ricciarini, S. A. Voronov, G. Castellini, Steven Stochaj, V. Di Felice, P. Papini, G. Zampa, Beatrice Panico, E. Vannuccini, Marco Ricci, Riccardo Munini, M. Bongi, A. G. Mayorov, Alexey Leonov, A. N. Kvashnin, P. Picozza, G. Osteria, Alfonso Monaco, R. Sparvoli, P. Spillantini, G. I. Vasilyev, O. Adriani, W. Menn, James M. Ryan, M. Merge, V. Bonvicini, Mirko Boezio, E. Mocchiutti, M. S. Potgieter, Y. I. Stozhkov, Nicola Mori, V. V. Mikhailov, L. Marcelli, Roberto Bellotti, C. De Santis, P. Carlson, A. M. Galper, A. Bruno, Sergey Koldobskiy, G. C. Barbarino, E. C. Christian, Matteo Martucci, N. Zampa, G. A. de Nolfo, G. A. Bazilevskaya, F. Cafagna, Andrea Vacchi, S. Bottai, V. V. Malakhov, M. Simon, Munini, R., Boezio, M., Bruno, A., Christian, E. C., Nolfo, G. A. D., Felice, V. D., Martucci, M., Merge, M., Richardson, I. G., Ryan, J. M., Stochaj, S., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Bongi, M., Bonvicini, V., Bottai, S., Cafagna, F., Campana, D., Carlson, P., Casolino, M., Castellini, G., Santis, C. D., Galper, A. M., 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., Osteria, G., Panico, B., 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 Potgieter, M. S.
Subjects: 010504 meteorology & atmospheric sciences, cosmic rays, Sun: coronal mass ejections (CMEs), Sun: heliosphere, Sun: particle emission, Astronomy and Astrophysics, Space and Planetary Science, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Cosmic ray, Astrophysics, 01 natural sciences, Physics - Space Physics, 0103 physical sciences, 010303 astronomy & astrophysics, cosmic ray, 0105 earth and related environmental sciences, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Settore FIS/04, Space Physics (physics.space-ph), Physics::Space Physics, Astrophysics - High Energy Astrophysical Phenomena, Event (particle physics), Sign (mathematics)
Abstract: New results on the short-term galactic cosmic-ray (GCR) intensity variation (Forbish decrease) in 2006 December measured by the PAMELA instrument are presented. Forbush decreases are sudden suppressions of the GCR intensities, which are associated with the passage of interplanetary transients such as shocks and interplanetary coronal mass ejections (ICMEs). Most of the past measurements of this phenomenon were carried out with groundbased detectors such as neutron monitors or muon telescopes. These techniques allow only the indirect detection of the overall GCR intensity over an integrated energy range. For the first time, thanks to the unique features of the PAMELA magnetic spectrometer, the Forbush decrease, commencing on 2006 December 14 and following a CME at the Sun on 2006 December 13, was studied in a wide rigidity range (0.4-20 GV) and for different species of GCRs detected directly in space. The daily averaged GCR proton intensity was used to investigate the rigidity dependence of the amplitude and the recovery time of the Forbush decrease. Additionally, for the first time, the temporal variations in the helium and electron intensities during a Forbush decrease were studied. Interestingly, the temporal evolutions of the helium and proton intensities during the Forbush decrease were found to be in good agreement, while the low rigidity electrons (
Published: 2018
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31. Solar Energetic Particle Events Observed by the PAMELA Mission

Author: G. Osteria, Sergey Koldashov, Nicola Mori, Mirko Boezio, S. Y. Krutkov, A. V. Karelin, S. A. Voronov, Massimo Bongi, Yu. T. Yurkin, Alfonso Monaco, L. Marcelli, E. R. Christian, Sergey Koldobskiy, V. Di Felice, G. Castellini, G. A. Bazilevskaya, N. Zampa, Roberto Bellotti, V. V. Malakhov, A. M. Galper, Ian G. Richardson, Yuri Stozhkov, W. Menn, S. Bottai, E. Vannuccini, E. A. Bogomolov, M. Ricci, Roberta Sparvoli, A. N. Kvashnin, Marco Casolino, P. Spillantini, Alexey Leonov, Giancarlo Barbarino, R. Munini, G. Vasilyev, O. Adriani, Per Carlson, James M. Ryan, Andrea Vacchi, Michal Simon, S. B. Ricciarini, A. Bruno, G. A. de Nolfo, A. G. Mayorov, V. Bonvicini, Mark Pearce, D. Campana, E. Mocchiutti, Steven Stochaj, P. Picozza, M. Merge, C. De Santis, B. Panico, Gianluigi Zampa, M. Martucci, Paolo Papini, V. V. Mikhailov, F. Cafagna, Bruno, A., Bazilevskaya, G. A., Boezio, M., Christian, E. R., Nolfo, G. A. D., Martucci, M., Merge, M., Mikhailov, V. V., Munini, R., Richardson, I. G., Ryan, J. M., Stochaj, S., Adriani, O., Barbarino, G. C., Bellotti, R., Bogomolov, E. A., Bongi, M., Bonvicini, V., Bottai, S., Cafagna, F., Campana, D., Carlson, P., Casolino, M., Castellini, G., Santis, C. D., Felice, V. D., Galper, A. M., 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., Mocchiutti, E., Monaco, A., Mori, N., Osteria, G., Panico, B., 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. I., Voronov, S. A., Yurkin, Y. T., Zampa, G., and Zampa, N.
Subjects: coronal mass ejections (CMEs), Sun: flares, space vehicle, 010504 meteorology & atmospheric sciences, acceleration of particles, solar-terrestrial relations, space vehicles, Sun: particle emission, Astronomy and Astrophysics, Space and Planetary Science, FOS: Physical sciences, Astrophysics, 01 natural sciences, Spectral line, Acceleration, 0103 physical sciences, Neutron, 010303 astronomy & astrophysics, acceleration of particle, Solar and Stellar Astrophysics (astro-ph.SR), 0105 earth and related environmental sciences, Physics, Sun: flare, solar-terrestrial relation, Solar energetic particles, Settore FIS/04, Shock (mechanics), Particle acceleration, Astrophysics - Solar and Stellar Astrophysics, Antimatter, Physics::Space Physics, Particle
Abstract: Despite the significant progress achieved in recent years, the physical mechanisms underlying the origin of solar energetic particles (SEPs) are still a matter of debate. The complex nature of both particle acceleration and transport poses challenges to developing a universal picture of SEP events that encompasses both the low-energy (from tens of keV to a few hundreds of MeV) observations made by space-based instruments and the GeV particles detected by the worldwide network of neutron monitors in ground-level enhancements (GLEs). The high-precision data collected by the Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics (PAMELA) satellite experiment offer a unique opportunity to study the SEP fluxes between $\sim$80 MeV and a few GeV, significantly improving the characterization of the most energetic events. In particular, PAMELA can measure for the first time with good accuracy the spectral features at moderate and high energies, providing important constraints for current SEP models. In addition, the PAMELA observations allow the relationship between low and high-energy particles to be investigated, enabling a clearer view of the SEP origin. No qualitative distinction between the spectral shapes of GLE, sub-GLE and non-GLE events is observed, suggesting that GLEs are not a separate class, but are the subset of a continuous distribution of SEP events that are more intense at high energies. While the spectral forms found are to be consistent with diffusive shock acceleration theory, which predicts spectral rollovers at high energies that are attributed to particles escaping the shock region during acceleration, further work is required to explore the relative influences of acceleration and transport processes on SEP spectra., Comment: 26 pages, 13 figures, 2 tables
Published: 2018

32. Proton Fluxes Measured by the PAMELA Experiment from the Minimum to the Maximum Solar Activity for Solar Cycle 24

Author: Yu. T. Yurkin, V. Di Felice, M. S. Potgieter, Mark Pearce, S. B. Ricciarini, V. Bonvicini, P. Spillantini, Y. I. Stozhkov, A. N. Kvashnin, Riccardo Munini, L. Marcelli, Andrea Vacchi, P. Papini, E. Vannuccini, A. Bruno, Roberto Bellotti, A. M. Galper, R. Sparvoli, O. Adriani, A. G. Mayorov, S. Y. Krutkov, V. V. Mikhailov, W. Menn, V. V. Malakhov, M. Simon, Sergey Koldobskiy, A. A. Leonov, M. Bongi, G. C. Barbarino, Marco Ricci, N. Zampa, N. Marcelli, Alfonso Monaco, G. A. Bazilevskaya, P. Picozza, A. V. Karelin, S. A. Voronov, Jan-Louis Raath, Mirko Boezio, M. Merge, Matteo Martucci, S. Bottai, E. Mocchiutti, G. Osteria, F. Cafagna, G. Castellini, Per Carlson, C. De Santis, G. I. Vasilyev, Nicola Mori, G. Zampa, Beatrice Panico, Sergey Koldashov, D. Campana, Marco Casolino, Martucci, M., Munini, R., Boezio, M., Felice, V. D., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carlson, P., Casolino, M., Castellini, G., Santis, C. D., Galper, A. M., Karelin, A. V., Koldashov, S. V., Koldobskiy, S., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Marcelli, N., Mayorov, A. G., Menn, W., Merge, M., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Osteria, G., Panico, B., 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., Potgieter, M. S., and Raath, J. L.
Subjects: Astroparticle physics, Physics, astroparticle physics, cosmic rays, Sun: heliosphere, Astronomy and Astrophysics, Space and Planetary Science, 010504 meteorology & atmospheric sciences, Proton, Astrophysics::High Energy Astrophysical Phenomena, Settore FIS/04, astroparticle physic, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Solar cycle 24, 01 natural sciences, 0103 physical sciences, Physics::Space Physics, 010303 astronomy & astrophysics, cosmic ray, Intensity (heat transfer), 0105 earth and related environmental sciences
Abstract: Precise measurements of the time-dependent intensity of the low-energy (
Published: 2018
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33. Trapped Positrons and Electrons in the Inner Radiation Belt According to Data of the PAMELA Experiment

Author: Sergey Koldobskiy, G. C. Barbarino, Sergey Koldashov, Mirko Boezio, Per Carlson, Alfonso Monaco, Massimo Bongi, S. Y. Krutkov, M. F. Runtso, F. Cafagna, Roberto Bellotti, Riccardo Munini, Yu. V. Mikhailova, G. A. Bazilevskaya, A. M. Galper, Yu. T. Yurkin, S. A. Voronov, M. Merge, G. I. Vasilyev, A. G. Mayorov, V. Bonvicini, R. Sparvoli, P. Papini, E. A. Bogomolov, Mark Pearce, D. Campana, A. A. Kvashnin, C. De Santis, O. Adriani, E. Mocchiutti, L. Marcelli, A. Vacchi, M. Simon, V. Di Felice, Matteo Martucci, G. Zampa, W. Menn, A. Bruno, V. V. Mikhailov, E. Vannuccini, B. Panico, S. Bottai, V. V. Malakhov, G. Osteria, N. Zampa, G. Castellini, Yuri Stozhkov, Nicola Mori, Alexey Leonov, P. Picozza, Marco Casolino, M. Ricci, A. V. Karelin, A. N. Kvashnin, P. Spillantini, S. B. Ricciarini, Mikhailov, V. V., Adriani, O., Bazilevskaya, G. A., Barbarino, G. C., Bellotti, R., Bogomolov, E. A., Boezio, M., Bonvicini, V., Bongi, M., Bottai, S., Bruno, A., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Galper, A. M., De Santis, C., Di Felice, V., Zampa, G., Zampa, N., Casolino, M., Campana, D., Karelin, A. V., Carlson, P., Castellini, G., Cafagna, F., Kvashnin, A. A., Kvashnin, A. N., Koldashov, S. V., Koldobskiy, S. A., Krutkov, S. Y., Leonov, A. A., Mayorov, A. G., Malakhov, V. V., Martucci, M., Marcelli, L., Menn, W., Merge, M., Mikhailova, Y. V., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Panico, B., Papini, P., Picozza, P., Pearce, M., Ricci, M., Ricciarini, S. B., Runtso, M. F., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., and Yurkin, Y. T.
Subjects: Nuclear and High Energy Physics, Elliptic orbit, Astrophysics::High Energy Astrophysical Phenomena, Magnetosphere, Electron, 01 natural sciences, Nuclear physics, symbols.namesake, Atomic and Molecular Physics, 0103 physical sciences, INTERNATIONAL SPACE STATION, SPECTROMETER, 010306 general physics, Atomic and Molecular Physics, and Optics, Physics, Settore FIS/01, Range (particle radiation), Spectrometer, 010308 nuclear & particles physics, DARK MATTER, COSMIC RAYS, Earth's magnetic field, Van Allen radiation belt, Physics::Space Physics, symbols, Physics::Accelerator Physics, Satellite, and Optics
Abstract: Measurements of secondary-electron and secondary-positron fluxes below the geomagnetic cutoff in near-Earth space were performed by means of the PAMELA magnetic spectrometer installed on board the Resurs-DK1 satellite launched on June 15, 2006, in an elliptical orbit of inclination 70A degrees and altitude 350 to 600 km. This spectrometer permits measuring the fluxes of electrons and positrons over a wide energy range, as well as determining their spatial distributions to a precision of about 2A degrees. A calculation of particle trajectories in the geomagnetic field makes it possible to separate electrons and positrons originating from cosmic-ray interactions in the Earth's magnetosphere. The spatial distributions of quasitrapped, trapped, and short-lived albedo positrons and electrons of energy above 70 MeV in the radiation belt were analyzed. The ratio of the electron-to-positron fluxes and the energy spectra of the electrons and positrons in question are indicative of different productionmechanisms for stably trapped and quasitrapped secondary particles.
Published: 2018

34. 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

35. Measurement of the large-scale anisotropy of cosmic rays in the PAMELA experiment

Author: P. Spillantini, S. A. Koldobskii, E. Mocchiutti, G. I. Vasil’ev, V. Bonvicini, Mark Pearce, S. B. Ricciarini, Marco Ricci, Roberta Sparvoli, C. De Santis, P. Papini, Per Carlson, M. Bongi, E. Vannuccini, S. Bottai, C. De Donato, M. Simon, L. Marcelli, A. Vacchi, V. Di Felice, V. V. Malakhov, Mirko Boezio, A. Bruno, Alfonso Monaco, Sergey Koldashov, Riccardo Munini, E. A. Bogomolov, W. Menn, P. Picozza, Valerio Formato, S. Yu. Krutkov, F. Cafagna, Yu. T. Yurkin, R. Carbone, M. Merge, G. Osteria, N. Zampa, O. Adriani, S. A. Voronov, D. Campana, A. G. Maiorov, Alexey Leonov, V. V. Mikhailov, Nicola Mori, Marco Casolino, Ritabrata Sarkar, Valentina Scotti, G. Castellini, F. Palma, G. A. Bazilevskaya, Matteo Martucci, Roberto Bellotti, A. M. Galper, G. C. Barbarino, A. N. Kvashnin, A. V. Karelin, N. De Simone, G. Zampa, Beatrice Panico, M. L. Rosetto, A. V., Karelin, O., Adriani, G. C., Barbarino, G. A., Bazilevskaya, R., Bellotti, M., Boezio, E. A., Bogomolov, M., Bongi, V., Bonvicini, S., Bottai, A., Bruno, A., Vacchi, E., Vannuccini, G. I., Vasil’Ev, S. A., Voronov, A. M., Galper, C., De Donato, C., De Santi, N., De Simone, V., Di Felice, G., Zampa, N., Zampa, F., Cafagna, D., Campana, R., Carbone, P., Carlson, M., Casolino, G., Castellini, A. N., Kvashnin, S. V., Koldashov, S. A., Koldobskii, S. Y., Krutkov, A. A., Leonov, L., Marcelli, M., Martucci, A. G., Maiorov, V. V., Malakhov, W., Menn, M., Mergè, V. V., Mikhailov, E., Mocchiutti, A., Monaco, N., Mori, Munini, Riccardo, G., Osteria, F., Palma, B., Panico, P., Papini, M., Pearce, P., Picozza, M., Ricci, S. B., Ricciarini, M. L., Rosetto, M., Simon, R., Sarkar, V., Scotti, R., Sparvoli, P., Spillantini, V., Formato, Y. T., Yurkin, Karelin, A. V., Adriani, O., Barbarino, Giancarlo, Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Vacchi, A., Vannuccini, E., Vasil’Ev, G. I., Voronov, S. A., Gal’Per, A. M., De Donato, C., De Santis, C., De Simone, N., Di Felice, V., Zampa, G., Zampa, N., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Kvashnin, A. N., Koldashov, S. V., Koldobskii, S. A., Krut’Kov, S. Y. u., Leonov, A. A., Marcelli, L., Martucci, M., Maiorov, A. G., Malakhov, V. V., 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., Rosetto, M. L., Simon, M., Sarkar, R., Scotti, V., Sparvoli, R., Spillantini, P., Formato, V., and Yurkin, Y. u. T.
Subjects: Physics, Physics and Astronomy (miscellaneous), Scale (ratio), Settore FIS/04, Astronomy, Cosmic ray, anisotropy, Astrophysics, Galaxy, satellite experiment, Physics::Geophysics, Dipole, cosmic rays, PAMELA, Equatorial coordinate system, Physics::Space Physics, Magnitude (astronomy), Cosmic Rays, anisotropy, PAMELA, Satellite, Anisotropy, Physics::Atmospheric and Oceanic Physics
Abstract: Large-scale anisotropy or so-called sidereal-diurnal wave has been detected in the PAMELA satellite experiment in the time interval of 2006–2014. The magnitude of anisotropy has been measured simultaneously for the Southern and Northern Hemispheres in the equatorial coordinate system. The results confirm the data of ground-based experiments.
Published: 2015

36. 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

37. 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
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38. 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

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

Author: Alfonso Monaco, A. N. Kvashnin, M. Merge, V. V. Mikhailov, P. Carlson, A. G. Mayorov, G. I. Vasiliev, R. Sparvoli, N. De Simone, G. Zampa, Beatrice Panico, M. Simon, N. Zampa, Sergey Koldashov, G. A. Bazilevskaya, Yu. T. Yurkin, C. De Santis, Yu. I. Stozhkov, V. V. Malakhov, S. Yu. Krutkov, P. Picozza, Roberto Bellotti, Mark Pearce, S. B. Ricciarini, F. Palma, A. M. Galper, P. Papini, Giuseppe Osteria, E. Vannuccini, Matteo Martucci, S. A. Koldobsky, E. Mocchiutti, F. Cafagna, A. V. Karelin, Mirko Boezio, D. Campana, S. Bottai, Maria Teresa Ricci, S. A. Voronov, Marco Casolino, C. De Donato, Nicola Mori, E. A. Bogomolov, Riccardo Munini, M. Bongi, P. Spillantini, O. Adriani, W. Menn, V. Di Felice, V. Bonvicini, G. C. Barbarino, G. Castellini, L. Marcelli, A. Vacchi, A. Bruno, Alexey Leonov, Mikhailov, V. V., Adriani, O., Barbarino, G., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F. S., Campana, D., Carlson, P., Casolino, M., Castellini, G., De Donato, C., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Karelin, A. V., Koldashov, S. V., Koldobsky, S., Krutkov, S. Y., Kvashnin, A. N., Leonov, A. A., Malakhov, V. V., Marcelli, L., Martucci, M., Mayorov, A. G., Menn, W., Merge, M., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Papini, P., Palma, F., Panico, B., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasiliev, G. I., Voronov, S. A., Yurkin, Y. T., Zampa, G., and Zampa, N.
Subjects: Physics, Settore FIS/01, History, Antiparticle, PAMELA detector, Spectrometer, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Polar orbit, Cosmic ray, Astrophysics, Electron, Cosmology, Electrons, Magnetic polarity, Orbits, Positrons, Computer Science Applications, Education, law.invention, Physics and Astronomy (all), Positron, law, Physics::Space Physics, Satellite, Astrophysics::Earth and Planetary Astrophysics
Abstract: Magnetic spectrometer PAMELA was launched onboard a satellite Resurs-DK1 into low-Earth polar orbit with altitude 350-600 km to study cosmic ray antiparticle fluxes in a wide energy range from ~ 100 MeV to hundreds GeV. This paper presents the results of observations of temporal variations of the positron and electron fluxes in the 2006-2015. The ratio of the positron and electron fluxes below 2 GV shows sharp increasing since 2014 due to changing of the polarity of the solar magnetic field.
Published: 2017

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

Author: Roberto Bellotti, A. M. Galper, V. V. Mikhailov, V. Bonvicini, Andrea Vacchi, Mark Pearce, S. B. Ricciarini, P. Papini, E. Vannuccini, M. Simon, G. Zampa, Beatrice Panico, Riccardo Munini, N. Zampa, Mirko Boezio, A. V. Karelin, R. Sparvoli, Marco Ricci, Per Carlson, Alfonso Monaco, F. Cafagna, A. N. Kvashnin, Yu. T. Yurkin, M. Merge, G. Osteria, Massimo Bongi, Sergey Koldobskiy, G. C. Barbarino, V. V. Malakhov, A. G. Mayorov, G. A. Bazilevskaya, V. Di Felice, S. Bottai, O. Adriani, E. Mocchiutti, W. Menn, A. A. Kvashnin, G. I. Vasilyev, S. Y. Krutkov, Matteo Martucci, M. F. Runtso, S. A. Voronov, P. Picozza, C. De Santis, Nicola Mori, P. Spillantini, D. Campana, Marco Casolino, Sergey Koldashov, L. Marcelli, A. Bruno, Alexey Leonov, Yuri Stozhkov, G. Castellini, E. A. Bogomolov, Koldobskiy, S. A., Adriani, O., Bazilevskaya, G. A., Barbarino, G. C., Bellotti, R., Bogomolov, E. A., Boezio, M., Bonvicini, V., Bongi, M., Bottai, S., Bruno, A., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Galper, A. M., De Santis, C., Di Felice, V., Zampa, G., Zampa, N., Casolino, M., Campana, D., Karelin, A. V., Carlson, P., Castellini, G., Cafagna, F., Kvashnin, A. A., Kvashnin, A. N., Koldashov, S. V., Krutkov, S. Y., Leonov, A. A., Mayorov, A. G., Malakhov, V. V., Martucci, M., Marcelli, L., Menn, W., Merge, M., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Panico, B., Papini, P., Picozza, P., Pearce, M., Ricci, M., Ricciarini, S. B., Runtso, M. F., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., and Yurkin, Y. T.
Subjects: Physics, COSMIC cancer database, PAMELA detector, 010308 nuclear & particles physics, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Settore FIS/04, General Physics and Astronomy, Cosmic ray, Cosmic ray measurement, Cosmic rays, Deuterium, Modulation, Solar energy Energy interval, Galactic cosmic rays, High precision detections, Measurements of, Solar activity, Solar modulation, Astrophysics, Solar energy, 01 natural sciences, Spectral line, law.invention, Physics and Astronomy (all), law, 0103 physical sciences, Physics::Space Physics, Coronal mass ejection, Satellite, Astrophysics::Earth and Planetary Astrophysics, business, Nucleon, 010303 astronomy & astrophysics
Abstract: The preliminary results from measurements of deuteron fluxes in galactic cosmic rays (GCR) in the vicinity of the Earth in 2006–2009 are presented. The results are obtained by analyzing data from the PAMELA experiment aboard the Resurs DK-1 satellite. High-precision detection instruments provided an opportunity to identify GCR deuterons and measure their spectrum in the energy interval of 90–650MeV/nucleon. Spectra averaged over six-month intervals from the summer of 2006 to the summer of 2009 (the solar activity minimum) are presented. The influence of solar modulation on the observed spectrum is clearly seen in the results.
Published: 2017

41. Modulation of electrons and positrons in 2006â2015 in the PAMELA experiment

Author: E. Mocchiutti, O. Adriani, W. Menn, A. G. Mayorov, A. N. Kvashnin, A. V. Karelin, R. Sparvoli, Mark Pearce, S. B. Ricciarini, Sergey Koldobskiy, P. Papini, G. Castellini, E. Vannuccini, Yu. T. Yurkin, G. C. Barbarino, V. V. Malakhov, Mirko Boezio, Marco Ricci, C. De Santis, N. Zampa, M. Bongi, Matteo Martucci, V. Di Felice, V. Bonvicini, S. Bottai, Roberto Bellotti, A. M. Galper, Andrea Vacchi, G. Zampa, Beatrice Panico, S. Y. Krutkov, A. A. Kvashnin, G. I. Vasilyev, Per Carlson, M. Simon, F. Cafagna, L. Marcelli, G. A. Bazilevskaya, G. Osteria, A. Bruno, Nicola Mori, P. Picozza, V. V. Mikhailov, Riccardo Munini, P. Spillantini, D. Campana, M. F. Runtso, S. A. Voronov, Marco Casolino, Sergey Koldashov, Alfonso Monaco, M. Merge, Yuri Stozhkov, Alexey Leonov, E. A. Bogomolov, Mikhailov, V. V., Adriani, O., Bazilevskaya, G. A., Barbarino, G. C., Bellotti, R., Bogomolov, E. A., Boezio, M., Bonvicini, V., Bongi, M., Bottai, S., Bruno, A., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Galper, A. M., De Santis, C., Di Felice, V., Zampa, G., Zampa, N., Casolino, M., Campana, D., Karelin, A. V., Carlson, P., Castellini, G., Cafagna, F., Kvashnin, A. A., Kvashnin, A. N., Koldashov, S. V., Koldobskiy, S. A., Krutkov, S. Y., Leonov, A. A., Mayorov, A. G., Malakhov, V. V., Martucci, M., Marcelli, L., Menn, W., Merge, M., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Panico, B., Papini, P., Picozza, P., Pearce, M., Ricci, M., Ricciarini, S. B., Runtso, M. F., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., and Yurkin, Y. T.
Subjects: Physics, Settore FIS/01, Antiparticle, PAMELA detector, Spectrometer, Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, Cosmic ray, Electron, Astrophysics, 01 natural sciences, law.invention, Physics and Astronomy (all), Positron, law, 0103 physical sciences, Physics::Space Physics, Coronal mass ejection, Interplanetary magnetic field, 010306 general physics, 010303 astronomy & astrophysics, Cosmic rays, Cosmology, Magnetic polarity, Orbits, Positrons, Solar energy Magnetic spectrometers, Solar activity, Solar magnetic fields, Temporal variation, Time interval, Wide energy range
Abstract: The PAMELA magnetic spectrometer was launched aboard the Resurs DK-1 satellite into a nearpolar circumterrestrial orbit with an altitude of 350–600 km to study fluxes of the particles and antiparticles of cosmic rays in the wide energy range of ~80 MeV to several hundred gigaelectronvolts. The results from observations of temporal variations in electron and positron fluxes in 2006–2015 are presented. The ratio of electron and positron fluxes measured in this time interval reveals a dependence on the rigidity of particles, the solar activity, and the polarity of the solar magnetic field.
Published: 2017

42. 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

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

Author: Piero Spillantini, A. I. Arkhangelskiy, V. V. Kadilin, S. G. Bobkov, A. E. Egorov, S. I. Suchkov, O. Adriani, Igor V. Moskalenko, Alexander Moiseev, Yu. I. Stozhkov, P. Yu. Naumov, Vladimir Kaplin, V. Bonvicini, E. Mocchiutti, Marco Tavani, P. Picozza, Maxim S. Gorbunov, A. A. Taraskin, I. V. Arkhangelskaja, N. P. Topchiev, V.G. Zverev, O. V. Serdin, Mirko Boezio, A. V. Bakaldin, A. M. Galper, Yu. V. Gusakov, V. V. Mikhailov, Bohdan Hnatyk, Valery Korepanov, Francesco Longo, Roberta Sparvoli, Alexey Leonov, M. F. Runtso, O. D. Dalkarov, M. D. Kheymits, Yu. T. Yurkin, Nicolay Kolachevsky, Oleg Dalkarov, Topchiev, N. P., Galper, A. M., Bonvicini, V., Adriani, O., Arkhangelskaja, I. V., Arkhangelskiy, A. I., Bakaldin, A. V., Bobkov, S. G., Boezio, M., Dalkarov, O. D., Egorov, A. E., Gorbunov, M. S., Gusakov, Yu. V., Hnatyk, B. I., Kadilin, V. V., Kaplin, V. A., Kheymits, M. D., Korepanov, V. E., Leonov, A. A., Longo, F., Mikhailov, V. V., Mocchiutti, E., Moiseev, A. A., Moskalenko, I. V., Naumov, P. Yu., Picozza, P., Runtso, M. F., Serdin, O. V., Sparvoli, R., Spillantini, P., Stozhkov, Yu. I., Suchkov, S. I., Taraskin, A. A., Tavani, M., Yurkin, Yu. T., and Zverev, V. G.
Subjects: Elliptic orbit, gamma-ray satellites, Astrophysics::High Energy Astrophysical Phenomena, QC1-999, gamma-ray astrophysic, Dark matter, 02 engineering and technology, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, law.invention, Telescope, law, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, Settore FIS/01, Gamma Ray, GAMMA400, Range (particle radiation), Galactic Center, Gamma ray, 020206 networking & telecommunications, gamma-ray astrophysics, Stage (hydrology), Fermi Gamma-ray Space Telescope
Abstract: Fermi-LAT has made a significant contribution to the study of high-energy gamma-ray diffuse emission and the observations of 3000 discrete sources. However, one third of all gamma-ray sources (both galactic and extragalactic) are unidentified, the data on the diffuse gamma-ray emission should be clarified, and signatures of dark matter particles in the high-energy gamma-ray range are not observed up to now. GAMMA-400, the currently developing gamma-ray telescope, will have angular (∼0.01∘ at 100 GeV) and energy (∼1% at 100 GeV) resolutions in the energy range of 10–1000 GeV which are better than Fermi-LAT (as well as ground gamma-ray telescopes) by a factor of 5–10. It will observe some regions of the Universe (such as the Galactic Center, Fermi Bubbles, Crab, Cygnus, etc.) in a highly elliptic orbit (without shading the telescope by the Earth) continuously for a long time. It will allow us to identify many discrete sources, to clarify the structure of extended sources, to specify the data on the diffuse emission, and to resolve gamma rays from dark matter particles.
Published: 2017

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

Author: P. Spillantini, Matteo Martucci, Yu. T. Yurkin, Nicola Mori, M. Bongi, Riccardo Munini, S. Y. Krutkov, Per Carlson, G. Zampa, A. V. Karelin, Beatrice Panico, A. N. Kvashnin, R. Sparvoli, C. De Santis, C. De Donato, V. V. Malakhov, O. Adriani, P. Picozza, W. Menn, A. G. Mayorov, S. A. Voronov, M. Merge, G. A. Bazilevskaya, Sergey Koldobskiy, G. C. Barbarino, M. Simon, G. Osteria, G. I. Vasilyev, V. Di Felice, V. Bonvicini, S. Bottai, A. Bruno, Y. I. Stozhkov, N. Zampa, Maria Teresa Ricci, F. Cafagna, E. A. Bogomolov, Roberto Bellotti, E. Mocchiutti, V. V. Mikhailov, A. M. Galper, Mark Pearce, S. B. Ricciarini, P. Papini, E. Vannuccini, L. Marcelli, A. Vacchi, F. Palma, Mirko Boezio, Alexey Leonov, G. Castellini, Sergey Koldashov, D. Campana, Marco Casolino, Galper, A. M., Sparvoli, R., Adriani, O., Barbarino, G., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carlson, P., Casolino, M., Castellini, G., De Donato, C., De Santis, C., Di Felice, V., Karelin, A. V., Koldashov, S. V., Koldobskiy, S. A., Krutkov, S. Y., Kvashnin, A. N., Leonov, A. A., Malakhov, V. V., Marcelli, L., Martucci, M., Mayorov, A. G., Menn, W., Merge, M., Mikhailov, V. V., Mocchiutti, E., Mori, N., Munini, R., Osteria, G., Palma, F., Panico, B., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Simon, M., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Yurkin, Y. T., Zampa, G., and Zampa, N.
Subjects: Physics, Settore FIS/01, History, COSMIC cancer database, 010504 meteorology & atmospheric sciences, PAMELA detector, Astronomy, Cosmic ray, Astrophysics, Space (mathematics), Carbon, Cosmology, Earth (planet), High energy physics, Positrons, Radiation belts, Solar energy Continuous data, Elemental compositions, Heliospheres, Measurements of, Quark matter, Radiation environments, Solar activity, Solar modulation, 01 natural sciences, Computer Science Applications, Education, law.invention, On board, Physics and Astronomy (all), law, 0103 physical sciences, Satellite, 010306 general physics, 0105 earth and related environmental sciences
Abstract: The PAMELA detector was launched on June 15 th of 2006 on board the Russian Resurs-DK1 satellite and during ten years of continuous data-taking it has observed very interesting features in cosmic rays, especially in the fluxes of protons, helium and electrons. Moreover, PAMELA measurements of cosmic antiproton and positron fluxes and positron-to-all-electron ratio have set strong constraints to the nature of Dark Matter. Measurements of boron, carbon, lithium and beryllium (together with the isotopic fraction) have also shed new light on the elemental composition of the cosmic radiation. Search for signatures of more exotic processes (such as the ones involving Strange Quark Matter) has also been pursued. Furthermore, over the years the instrument has allowed a constant monitoring of the solar activity and a prolonged study of the solar modulation, improving the comprehension of the heliosphere mechanisms. PAMELA has also measured the radiation environment around the Earth, and detected for the first time the presence of an antiproton radiation belt surrounding our planet. In this highlight paper PAMELA main results will be reviewed.
Published: 2017

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

Author: G. Zampa, Beatrice Panico, Roberto Bellotti, A. M. Galper, Matteo Martucci, G. A. de Nolfo, Alfonso Monaco, A. G. Mayorov, Alexey Leonov, M. Merge, Valentina Scotti, N. Zampa, G. A. Bazilevskaya, V. Bonvicini, Y. I. Stozhkov, E. Mocchiutti, Ritabrata Sarkar, S. Bottai, Sergey Koldashov, R. Sparvoli, Sergey Koldobskiy, A. V. Karelin, Marco Ricci, V. V. Malakhov, G. C. Barbarino, G. Osteria, G. I. Vasilyev, G. Castellini, S. Y. Krutkov, James M. Ryan, V. Di Felice, C. De Santis, C. De Donato, Mirko Boezio, P. Picozza, Nicola Mori, F. Palma, M. Simon, V. V. Mikhailov, Riccardo Munini, F. Cafagna, E. C. Christian, O. Adriani, A. N. Kvashnin, W. Menn, Yu. T. Yurkin, L. Marcelli, M. Bongi, A. Vacchi, A. Bruno, Mark Pearce, S. B. Ricciarini, Steven Stochaj, P. Papini, E. Vannuccini, S. A. Voronov, E. A. Bogomolov, Per Carlson, N. De Simone, P. Spillantini, D. Campana, Marco Casolino, Bruno, A., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Bottai, S., Cafagna, F., Campana, D., Carlson, P., Casolino, M., Castellini, G., Christian, E. C., De Donato, C., de Nolfo, G. A., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Karelin, A. V., Koldashov, S. V., Koldobskiy, S., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Martucci, M., Mayorov, A. G., Menn, W., Mergè, M., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Palma, F., Panico, B., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Ryan, J. M., Sarkar, R., Scotti, V., Simon, M., Sparvoli, R., Spillantini, P., Stochaj, S., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Yurkin, Y. T., Zampa, G., and Zampa, N.
Subjects: Atmospheric Science, Solar energetic particles, 010504 meteorology & atmospheric sciences, Astrophysics::High Energy Astrophysical Phenomena, Aerospace Engineering, FOS: Physical sciences, Space weather, 01 natural sciences, law.invention, Physics::Geophysics, symbols.namesake, Physics - Space Physics, law, 0103 physical sciences, Albedo particles, Cosmic-rays, 010303 astronomy & astrophysics, Ring current, 0105 earth and related environmental sciences, Physics, Geomagnetic storm, Settore FIS/01, PAMELA detector, Astronomy, Geomagnetic cutoff, Radiation belts, Space and Planetary Science, Astronomy and Astrophysics, Space Physics (physics.space-ph), Geophysics, Earth's magnetic field, Van Allen radiation belt, Health threat from cosmic rays, Physics::Space Physics, symbols, General Earth and Planetary Sciences, Astrophysics::Earth and Planetary Astrophysics
Abstract: The PAMELA satellite experiment is providing comprehensive observations of the interplanetary and magnetospheric radiation in the near-Earth environment. Thanks to its identification capabilities and the semi-polar orbit, PAMELA is able to precisely measure the energetic spectra and the angular distributions of the different cosmic-ray populations over a wide latitude region, including geomagnetically trapped and albedo particles. Its observations comprise the solar energetic particle events between solar cycles 23 and 24, and the geomagnetic cutoff variations during magnetospheric storms. PAMELA's measurements are supported by an accurate analysis of particle trajectories in the Earth's magnetosphere based on a realistic geomagnetic field modeling, which allows the classification of particle populations of different origin and the investigation of the asymptotic directions of arrival., Comment: Accepted for publication in Advances in Space Research, 2016. 21 pages, 7 figures
Published: 2017

46. Time dependence of the helium flux measured by PAMELA

Author: Roberto Bellotti, A. M. Galper, Nicola Mori, P. Spillantini, M. Bongi, C. De Santis, Alfonso Monaco, M. S. Potgieter, S. A. Voronov, Sergey Koldobskiy, M. Merge, E. A. Bogomolov, Per Carlson, G. C. Barbarino, S. Y. Krutkov, S. Bottai, E. Mocchiutti, V. Bonvicini, Y. I. Stozhkov, Riccardo Munini, A. V. Karelin, G. I. Vasilyev, P. Picozza, V. V. Malakhov, Mark Pearce, S. B. Ricciarini, O. Adriani, M. Simon, S. V. Koldashov, G. Osteria, W. Menn, P. Papini, N. Marcelli, E. Vannuccini, Marco Ricci, Andrea Vacchi, Yu. T. Yurkin, N. Zampa, G. A. Bazilevskaya, L. Marcelli, A. Bruno, V. Di Felice, R. Sparvoli, F. Cafagna, A. N. Kvashnin, V. V. Mikhailov, G. Zampa, Beatrice Panico, Alexey Leonov, Driaan Bisschoff, G. Castellini, O. P. M. Aslam, A. G. Mayorov, Mirko Boezio, D. Campana, Matteo Martucci, Marco Casolino, De Vincenzi, M., Marcelli, N., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carlson, P., Casolino, M., Castellini, G., De Santis, C., Di Felice, V., Galper, A. M., Karelin, A. V., Koldashov, S. V., Koldobskiy, S., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Martucci, M., Mayorov, A. G., Menn, W., Mergè, M., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Panico, B., 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., Potgieter, M. S., Aslam, O. P. M., and Bisschoff, D.
Subjects: Physics, Range (particle radiation), QC1-999, Computer Science::Information Retrieval, Astrophysics::High Energy Astrophysical Phenomena, chemistry.chemical_element, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Galaxy, Nuclear physics, Space experiment, Flux (metallurgy), chemistry, Modulation, 0103 physical sciences, 010306 general physics, 010303 astronomy & astrophysics, Helium
Abstract: Precision measurements of the Z = 2 component in cosmic radiation provide crucial information about the origin and propagation of the second most abundant cosmic ray species in the Galaxy (9% of the total). These measurements, acquired with the PAMELA space experiment orbiting Earth, allow to study solar modulation in details. Helium modulation is compared to the modulation of protons to study possible dependencies on charge and mass. The time dependence of helium fluxes on a monthly basis measured by PAMELA has been studied for the period between July 2006 to January 2016 in the energy range from 800 MeV/n to ~ 20 GeV/n.
Published: 2019

47. PAMELA's measurements of geomagnetic cutoff variations during the 14 December 2006 storm

Author: Sergey Koldobskiy, G. C. Barbarino, Alfonso Monaco, D. Campana, A. G. Mayorov, Mark Pearce, S. B. Ricciarini, Marco Casolino, S. Y. Krutkov, P. Papini, E. Vannuccini, M. Merge, Matteo Martucci, E. Mocchiutti, G. A. de Nolfo, S. Bottai, P. Picozza, V. Bonvicini, O. Adriani, Sergey Koldashov, Y. I. Stozhkov, A. V. Karelin, W. Menn, V. V. Malakhov, Per Carlson, Valentina Scotti, P. Spillantini, F. Cafagna, M. Bongi, N. De Simone, Marco Ricci, M. Simon, Roberto Bellotti, A. M. Galper, N. Zampa, V. V. Mikhailov, F. Palma, A. N. Kvashnin, G. A. Bazilevskaya, S. A. Voronov, R. Sparvoli, E. A. Bogomolov, Yu. T. Yurkin, V. Di Felice, G. Osteria, Nicola Mori, G. I. Vasilyev, C. De Santis, C. De Donato, Riccardo Munini, G. Zampa, Beatrice Panico, Alexey Leonov, Ritabrata Sarkar, G. Castellini, Mirko Boezio, L. Marcelli, A. Vacchi, A. Bruno, Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carlson, P., Casolino, M., Castellini, G., De Donato, C., De Nolfo, G. A., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Karelin, A. V., Koldashov, S. V., Koldobskiy, S., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Martucci, M., Mayorov, A. G., Menn, W., 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., Ricci, M., Ricciarini, S. B., Sarkar, R., Scotti, V., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Yurkin, Y. T., Zampa, G., and Zampa, N.
Subjects: Geomagnetic Cutoff, Atmospheric Science, 010504 meteorology & atmospheric sciences, Astrophysics::High Energy Astrophysical Phenomena, Magnetosphere, FOS: Physical sciences, Astrophysics, 01 natural sciences, Physics::Geophysics, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Physics - Space Physics, 0103 physical sciences, Interplanetary magnetic field, Solar Energetic Particles, 010303 astronomy & astrophysics, 0105 earth and related environmental sciences, Physics, Geomagnetic storm, Earth and Planetary Astrophysics (astro-ph.EP), Ionospheric dynamo region, Geomagnetic secular variation, Solar energetic particles, Settore FIS/04, Geophysics, Magnetic Storms, Space Physics (physics.space-ph), Solar wind, Earth's magnetic field, Physics::Space Physics, Astrophysics - Earth and Planetary Astrophysics
Abstract: Data from the Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics (PAMELA) satellite experiment were used to measure the geomagnetic cutoff for high-energy (>80 MeV) protons during the 14 December 2006 geomagnetic storm. The variations of the cutoff latitude as a function of rigidity were studied on relatively short timescales, corresponding to spacecraft orbital periods (94 min). Estimated cutoff values were compared with those obtained by means of a trajectory tracing approach based on a dynamical empirical modeling of the Earth's magnetosphere. We found significant variations in the cutoff latitude, with a maximum suppression of about 7 deg at lowest rigidities during the main phase of the storm. The observed reduction in the geomagnetic shielding and its temporal evolution were related to the changes in the magnetospheric configuration, investigating the role of interplanetary magnetic field, solar wind and geomagnetic parameters. PAMELA's results represent the first direct measurement of geomagnetic cutoffs for protons with kinetic energies in the sub-GeV and GeV region., 26 pages, 6 figures and 1 table. Accepted for publication in Space Weather
Published: 2016

48. The measurement of the dipole anisotropy of protons and helium cosmic rays with the PAMELA experiment

Author: Mark Pearce, S. B. Ricciarini, S. Y. Krutkov, P. Papini, M. Merge, E. Vannuccini, M. Simon, A. A. Leonov, V. V. Mikhailov, V. Di Felice, P. Picozza, Nicola Mori, N. Zampa, R. Sparvoli, G. A. Bazilevskaya, Maria Teresa Ricci, A. G. Mayorov, L. Marcelli, Riccardo Munini, V. V. Malakhov, O. Adriani, A. Bruno, Yu. T. Yurkin, W. Menn, V. Bonvicini, Sergey Koldashov, S. Bottai, F. Cafagna, Y. I. Stozhkov, A. V. Karelin, E. Mocchiutti, Valentina Scotti, Matteo Martucci, G. Osteria, Piero Spillantini, Andrea Vacchi, Roberto Bellotti, Per Carlson, A. M. Galper, A. N. Kvashnin, F. Palma, C. De Donato, N. De Simone, Sergey Koldobskiy, G. C. Barbarino, D. Campana, Mirko Boezio, Marco Casolino, G. Castellini, Massimo Bongi, C. De Santis, G. I. Vasilyev, Ritabrata Sarkar, V. Formato, S. A. Voronov, E. A. Bogomolov, G. Zampa, Beatrice Panico, Alfonso Monaco, Karelin, A. V., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carlson, P., Casolino, M., Castellini, G., De Donato, C., De Santis, C., De Simone, N., Felice, V. D., Formato, V., Galper, A. M., Koldobskiy, S. A., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Martucci, M., Mayorov, A. G., Menn, W., Mergè, M., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Palma, F., Panico, B., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Sarkar, R., Scotti, V., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Yurkin, Y. T., Zampa, G., and Zampa, N.
Subjects: Settore FIS/01, Physics, History, Range (particle radiation), Calorimeter (particle physics), Astrophysics::High Energy Astrophysical Phenomena, Dipole anisotropy, chemistry.chemical_element, Cosmic ray, Astrophysics, 01 natural sciences, Computer Science Applications, Education, Nuclear physics, Dipole, Physics and Astronomy (all), Amplitude, chemistry, 0103 physical sciences, 010306 general physics, Anisotropy, 010303 astronomy & astrophysics, Cosmic ray measurement, Cosmology, Tellurium compounds, Helium
Abstract: In the framework of the PAMELA experiment the features of the large-scale anisotropy have been measured within the energy range 1-20 TeV/n. The measurements were carried out with the use of the calorimeter on the base of the hypothesis about the existence of a dipole anisotropy. The amplitude and phase of the dipole were obtained. The results are in agreement with the ground-based observations.
Published: 2016

49. 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

50. 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

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