Author: "Boella, Giuliano" - Searchworks@Jio Institute Digital Library Search Results

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127 results on '"Boella, Giuliano"'

1. CMB Observations: improvements of the performance of correlation radiometers by signal modulation and synchronous detection

Author: Spiga, Daniele, Battistelli, Elia, Boella, Giuliano, Gervasi, Massimo, Zannoni, Mario, and Sironi, Giorgio
Subjects: Astrophysics
Abstract: Observation of the fine structures (anisotropies, polarization, spectral distortions) of the Cosmic Microwave Background (CMB) is hampered by instabilities, 1/f noise and asymmetries of the radiometers used to carry on the measurements. Addition of modulation and synchronous detection allows to increase the overall stability and the noise rejection of the radiometers used for CMB studies. In this paper we discuss the advantages this technique has when we try to detect CMB polarization. The behaviour of a two channel correlation receiver to which phase modulation and synchronous detection have been added is examined. Practical formulae for evaluating the improvements are presented., Comment: 18 pages, 3 figures, New Astronomy accepted
Published: 2002
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2. Beppo and space research in Italy

Author: Boella, Giuliano, Redondi, Pietro, editor, Sironi, Giorgio, editor, Tucci, Pasquale, editor, and Vegni, Guido, editor
Published: 2006
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3. The CMB spectrum: Perspective of observing spectral distortions

Author: Sironi, Giorgio, Boella, Giuliano, Gervasi, Massimo, Tartari, Andrea, and Zannoni, Mario
Published: 2007
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4. JFET transistors for low-noise applications at low frequency

Author: Arnaboldi, Claudio, Boella, Giuliano, Panzeri, Emanuele, and Pessina, Gianluigi
Subjects: Transistors -- Research, Circuit components, Semiconductor device, Business, Electronics, Electronics and electrical industries
Abstract: We describe a methodology to study and select JFET transistors, to be adopted for the readout of bolometric detectors, which makes use of a novel instrument capable of doing very accurate automatic noise measurements at low frequency. Clever design criteria and properly selected biasing conditions allow outstanding results in terms of noise and power dissipation. Noise was explored at very small power dissipation, 2.5[micro]W, and JFET transistors were biased in a nonconventional region at low temperature.
Published: 2004

5. Dynamic and low-frequency noise characterization of Si-Ge heterojunction-bipolar transistors at cryogenic temperatures

Author: Arnaboldi, Claudio, Boella, Giuliano, and Pessina, Gianluigi
Subjects: Semiconductor device, Business, Electronics, Electronics and electrical industries
Abstract: We present the characterization of the static and low-frequency noise performances of some commercial Si-Ge heterojunction bipolar transistors from 4.2 K to room temperature. The low injection region of operation was considered in view of their possible applications for the readout of array of cryogenic detectors. Index Terms--Cryogenic electronics, noise, noise measurements, semiconductor device noise.
Published: 2003

6. Precision Measurement of the Boron to Carbon Flux Ratio in Cosmic Rays from 1.9 GV to 2.6 TV with the Alpha Magnetic Spectrometer on the International Space Station

Author: Aguilar, M, Ali Cavasonza, L, Ambrosi, G, Arruda, L, Attig, N, Aupetit, S, Azzarello, P, Bachlechner, A, Barao, F, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Başeğmez du Pree, S, Battarbee, M, Battiston, R, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Bertucci, B, Bindel, K, Bindi, V, Boella, G, de Boer, W, Bollweg, K, Bonnivard, V, Borgia, B, Boschini, M, Bourquin, M, Bueno, E, Burger, J, Cadoux, F, Cai, X, Capell, M, Caroff, S, Casaus, J, Castellini, G, Cervelli, F, Chae, M, Chang, Y, Chen, A, Chen, G, Chen, H, Cheng, L, Chou, H, Choumilov, E, Choutko, V, Chung, C, Clark, C, Clavero, R, Coignet, G, Consolandi, C, Contin, A, Corti, C, Creus, W, Crispoltoni, M, Cui, Z, Dai, Y, Delgado, C, Della Torre, S, Demakov, O, Demirköz, M, Derome, L, Di Falco, S, Dimiccoli, F, Díaz, C, von Doetinchem, P, Dong, F, Donnini, F, Duranti, M, D’Urso, D, Egorov, A, Eline, A, Eronen, T, Feng, J, Fiandrini, E, Finch, E, Fisher, P, Formato, V, Galaktionov, Y, Gallucci, G, García, B, García López, R, Gargiulo, C, Gast, H, Gebauer, I, Gervasi, M, Ghelfi, A, Giovacchini, F, Goglov, P, Gómez Coral, D, Gong, J, Goy, C, Grabski, V, Grandi, D, Graziani, M, Guo, K, Haino, S, Han, K, He, Z, Heil, M, Hoffman, J, Hsieh, T, Huang, H, Huang, Z, Huh, C, Incagli, M, Ionica, M, Jang, W, Jinchi, H, Kang, S, Kanishev, K, Kim, G, Kim, K, Kirn, T, Konak, C, Kounina, O, Kounine, A, Koutsenko, V, Krafczyk, M, LA VACCA, G, Laudi, E, Laurenti, G, Lazzizzera, I, Lebedev, A, Lee, H, Lee, S, Leluc, C, Li, H, Li, J, Li, Q, Li, T, Li, W, Li, Y, Li, Z, Lim, S, Lin, C, Lipari, P, Lippert, T, Liu, D, Liu, H, Lordello, V, Lu, S, Lu, Y, Luebelsmeyer, K, Luo, F, Luo, J, Lv, S, Machate, F, Majka, R, Mañá, C, Marín, J, Martin, T, Martínez, G, Masi, N, Maurin, D, Menchaca Rocha, A, Meng, Q, Mikuni, V, Mo, D, Morescalchi, L, Mott, P, Nelson, T, Ni, J, Nikonov, N, Nozzoli, F, Oliva, A, Orcinha, M, Palmonari, F, Palomares, C, Paniccia, M, Pauluzzi, M, Pensotti, S, Pereira, R, Picot Clemente, N, Pilo, F, Pizzolotto, C, Plyaskin, V, Pohl, M, Poireau, V, Putze, A, Quadrani, L, Qi, X, Qin, X, Qu, Z, Räihä, T, Rancoita, P, Rapin, D, Ricol, J, Rosier Lees, S, Rozhkov, A, Rozza, D, Sagdeev, R, Sandweiss, J, Saouter, P, Schael, S, Schmidt, S, Schulz von Dratzig, A, Schwering, G, Seo, E, Shan, B, Shi, J, Siedenburg, T, Son, D, Song, J, Sun, W, Tacconi, M, Tang, X, Tang, Z, Tao, L, Tescaro, D, Ting, S, Tomassetti, N, Torsti, J, Türkoğlu, C, Urban, T, Vagelli, V, Valente, E, Vannini, C, Valtonen, E, Vázquez Acosta, M, Vecchi, M, Velasco, M, Vialle, J, Vitale, V, Vitillo, S, Wang, L, Wang, N, Wang, Q, Wang, X, Wang, Z, Wei, C, Weng, Z, Whitman, K, Wienkenhöver, J, Wu, H, Wu, X, Xia, X, Xiong, R, Xu, W, Yan, Q, Yang, J, Yang, M, Yang, Y, Yi, H, Yu, Y, Yu, Z, Zeissler, S, Zhang, C, Zhang, J, Zhang, S, Zhang, Z, Zheng, Z, Zhu, Z, Zhuang, H, Zhukov, V, Zichichi, A, Zimmermann, N, Zuccon, P, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, GRANDI, DAVIDE, LA VACCA, GIUSEPPE, PENSOTTI, SIMONETTA, ROZZA, DAVIDE, TACCONI, MAURO, Zuccon, P., Aguilar, M, Ali Cavasonza, L, Ambrosi, G, Arruda, L, Attig, N, Aupetit, S, Azzarello, P, Bachlechner, A, Barao, F, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Başeğmez du Pree, S, Battarbee, M, Battiston, R, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Bertucci, B, Bindel, K, Bindi, V, Boella, G, de Boer, W, Bollweg, K, Bonnivard, V, Borgia, B, Boschini, M, Bourquin, M, Bueno, E, Burger, J, Cadoux, F, Cai, X, Capell, M, Caroff, S, Casaus, J, Castellini, G, Cervelli, F, Chae, M, Chang, Y, Chen, A, Chen, G, Chen, H, Cheng, L, Chou, H, Choumilov, E, Choutko, V, Chung, C, Clark, C, Clavero, R, Coignet, G, Consolandi, C, Contin, A, Corti, C, Creus, W, Crispoltoni, M, Cui, Z, Dai, Y, Delgado, C, Della Torre, S, Demakov, O, Demirköz, M, Derome, L, Di Falco, S, Dimiccoli, F, Díaz, C, von Doetinchem, P, Dong, F, Donnini, F, Duranti, M, D’Urso, D, Egorov, A, Eline, A, Eronen, T, Feng, J, Fiandrini, E, Finch, E, Fisher, P, Formato, V, Galaktionov, Y, Gallucci, G, García, B, García López, R, Gargiulo, C, Gast, H, Gebauer, I, Gervasi, M, Ghelfi, A, Giovacchini, F, Goglov, P, Gómez Coral, D, Gong, J, Goy, C, Grabski, V, Grandi, D, Graziani, M, Guo, K, Haino, S, Han, K, He, Z, Heil, M, Hoffman, J, Hsieh, T, Huang, H, Huang, Z, Huh, C, Incagli, M, Ionica, M, Jang, W, Jinchi, H, Kang, S, Kanishev, K, Kim, G, Kim, K, Kirn, T, Konak, C, Kounina, O, Kounine, A, Koutsenko, V, Krafczyk, M, LA VACCA, G, Laudi, E, Laurenti, G, Lazzizzera, I, Lebedev, A, Lee, H, Lee, S, Leluc, C, Li, H, Li, J, Li, Q, Li, T, Li, W, Li, Y, Li, Z, Lim, S, Lin, C, Lipari, P, Lippert, T, Liu, D, Liu, H, Lordello, V, Lu, S, Lu, Y, Luebelsmeyer, K, Luo, F, Luo, J, Lv, S, Machate, F, Majka, R, Mañá, C, Marín, J, Martin, T, Martínez, G, Masi, N, Maurin, D, Menchaca Rocha, A, Meng, Q, Mikuni, V, Mo, D, Morescalchi, L, Mott, P, Nelson, T, Ni, J, Nikonov, N, Nozzoli, F, Oliva, A, Orcinha, M, Palmonari, F, Palomares, C, Paniccia, M, Pauluzzi, M, Pensotti, S, Pereira, R, Picot Clemente, N, Pilo, F, Pizzolotto, C, Plyaskin, V, Pohl, M, Poireau, V, Putze, A, Quadrani, L, Qi, X, Qin, X, Qu, Z, Räihä, T, Rancoita, P, Rapin, D, Ricol, J, Rosier Lees, S, Rozhkov, A, Rozza, D, Sagdeev, R, Sandweiss, J, Saouter, P, Schael, S, Schmidt, S, Schulz von Dratzig, A, Schwering, G, Seo, E, Shan, B, Shi, J, Siedenburg, T, Son, D, Song, J, Sun, W, Tacconi, M, Tang, X, Tang, Z, Tao, L, Tescaro, D, Ting, S, Tomassetti, N, Torsti, J, Türkoğlu, C, Urban, T, Vagelli, V, Valente, E, Vannini, C, Valtonen, E, Vázquez Acosta, M, Vecchi, M, Velasco, M, Vialle, J, Vitale, V, Vitillo, S, Wang, L, Wang, N, Wang, Q, Wang, X, Wang, Z, Wei, C, Weng, Z, Whitman, K, Wienkenhöver, J, Wu, H, Wu, X, Xia, X, Xiong, R, Xu, W, Yan, Q, Yang, J, Yang, M, Yang, Y, Yi, H, Yu, Y, Yu, Z, Zeissler, S, Zhang, C, Zhang, J, Zhang, S, Zhang, Z, Zheng, Z, Zhu, Z, Zhuang, H, Zhukov, V, Zichichi, A, Zimmermann, N, Zuccon, P, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, GRANDI, DAVIDE, LA VACCA, GIUSEPPE, PENSOTTI, SIMONETTA, ROZZA, DAVIDE, TACCONI, MAURO, and Zuccon, P.
Published: 2016

7. Antiproton Flux, Antiproton-to-Proton Flux Ratio, and Properties of Elementary Particle Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station

Author: Aguilar, M, Ali Cavasonza, L, Alpat, B, Ambrosi, G, Arruda, L, Attig, N, Aupetit, S, Azzarello, P, Bachlechner, A, Barao, F, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Başeǧmez du Pree, S, Battarbee, M, Battiston, R, Bazo, J, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Bertucci, B, Bindi, V, Boella, G, de Boer, W, Bollweg, K, Bonnivard, V, Borgia, B, Boschini, M, Bourquin, M, Bueno, E, Burger, J, Cadoux, F, Cai, X, Capell, M, Caroff, S, Casaus, J, Castellini, G, Cernuda, I, Cervelli, F, Chae, M, Chang, Y, Chen, A, Chen, G, Chen, H, Cheng, L, Chou, H, Choumilov, E, Choutko, V, Chung, C, Clark, C, Clavero, R, Coignet, G, Consolandi, C, Contin, A, Corti, C, Coste, B, Creus, W, Crispoltoni, M, Cui, Z, Dai, Y, Delgado, C, Della Torre, S, Demirköz, M, Derome, L, Di Falco, S, Dimiccoli, F, Díaz, C, von Doetinchem, P, Dong, F, Donnini, F, Duranti, M, D’Urso, D, Egorov, A, Eline, A, Eronen, T, Feng, J, Fiandrini, E, Finch, E, Fisher, P, Formato, V, Galaktionov, Y, Gallucci, G, García, B, García López, R, Gargiulo, C, Gast, H, Gebauer, I, Gervasi, M, Ghelfi, A, Giovacchini, F, Goglov, P, Gómez Coral, D, Gong, J, Goy, C, Grabski, V, Grandi, D, Graziani, M, Guerri, I, Guo, K, Habiby, M, Haino, S, Han, K, He, Z, Heil, M, Hoffman, J, Hsieh, T, Huang, H, Huang, Z, Huh, C, Incagli, M, Ionica, M, Jang, W, Jinchi, H, Kang, S, Kanishev, K, Kim, G, Kim, K, Kirn, T, Konak, C, Kounina, O, Kounine, A, Koutsenko, V, Krafczyk, M, LA VACCA, G, Laudi, E, Laurenti, G, Lazzizzera, I, Lebedev, A, Lee, H, Lee, S, Leluc, C, Li, H, Li, J, Li, Q, Li, T, Li, W, Li, Z, Lim, S, Lin, C, Lipari, P, Lippert, T, Liu, D, Liu, H, Lu, S, Lu, Y, Luebelsmeyer, K, Luo, F, Luo, J, Lv, S, Majka, R, Mañá, C, Marín, J, Martin, T, Martínez, G, Masi, N, Maurin, D, Menchaca Rocha, A, Meng, Q, Mo, D, Morescalchi, L, Mott, P, Nelson, T, Ni, J, Nikonov, N, Nozzoli, F, Nunes, P, Oliva, A, Orcinha, M, Palmonari, F, Palomares, C, Paniccia, M, Pauluzzi, M, Pensotti, S, Pereira, R, Picot Clemente, N, Pilo, F, Pizzolotto, C, Plyaskin, V, Pohl, M, Poireau, V, Putze, A, Quadrani, L, Qi, X, Qin, X, Qu, Z, Räihä, T, Rancoita, P, Rapin, D, Ricol, J, Rodríguez, I, Rosier Lees, S, Rozhkov, A, Rozza, D, Sagdeev, R, Sandweiss, J, Saouter, P, Schael, S, Schmidt, S, Schulz von Dratzig, A, Schwering, G, Seo, E, Shan, B, Shi, J, Siedenburg, T, Son, D, Song, J, Sun, W, Tacconi, M, Tang, X, Tang, Z, Tao, L, Tescaro, D, Ting, S, Tomassetti, N, Torsti, J, Türkoğlu, C, Urban, T, Vagelli, V, Valente, E, Vannini, C, Valtonen, E, Vázquez Acosta, M, Vecchi, M, Velasco, M, Vialle, J, Vitale, V, Vitillo, S, Wang, L, Wang, N, Wang, Q, Wang, X, Wang, Z, Wei, C, Weng, Z, Whitman, K, Wienkenhöver, J, Willenbrock, M, Wu, H, Wu, X, Xia, X, Xiong, R, Xu, W, Yan, Q, Yang, J, Yang, M, Yang, Y, Yi, H, Yu, Y, Yu, Z, Zeissler, S, Zhang, C, Zhang, J, Zhang, S, Zhang, Z, Zheng, Z, Zhu, Z, Zhuang, H, Zhukov, V, Zichichi, A, Zimmermann, N, Zuccon, P, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, LA VACCA, GIUSEPPE, PENSOTTI, SIMONETTA, ROZZA, DAVIDE, TACCONI, MAURO, Zuccon, P., Aguilar, M, Ali Cavasonza, L, Alpat, B, Ambrosi, G, Arruda, L, Attig, N, Aupetit, S, Azzarello, P, Bachlechner, A, Barao, F, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Başeǧmez du Pree, S, Battarbee, M, Battiston, R, Bazo, J, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Bertucci, B, Bindi, V, Boella, G, de Boer, W, Bollweg, K, Bonnivard, V, Borgia, B, Boschini, M, Bourquin, M, Bueno, E, Burger, J, Cadoux, F, Cai, X, Capell, M, Caroff, S, Casaus, J, Castellini, G, Cernuda, I, Cervelli, F, Chae, M, Chang, Y, Chen, A, Chen, G, Chen, H, Cheng, L, Chou, H, Choumilov, E, Choutko, V, Chung, C, Clark, C, Clavero, R, Coignet, G, Consolandi, C, Contin, A, Corti, C, Coste, B, Creus, W, Crispoltoni, M, Cui, Z, Dai, Y, Delgado, C, Della Torre, S, Demirköz, M, Derome, L, Di Falco, S, Dimiccoli, F, Díaz, C, von Doetinchem, P, Dong, F, Donnini, F, Duranti, M, D’Urso, D, Egorov, A, Eline, A, Eronen, T, Feng, J, Fiandrini, E, Finch, E, Fisher, P, Formato, V, Galaktionov, Y, Gallucci, G, García, B, García López, R, Gargiulo, C, Gast, H, Gebauer, I, Gervasi, M, Ghelfi, A, Giovacchini, F, Goglov, P, Gómez Coral, D, Gong, J, Goy, C, Grabski, V, Grandi, D, Graziani, M, Guerri, I, Guo, K, Habiby, M, Haino, S, Han, K, He, Z, Heil, M, Hoffman, J, Hsieh, T, Huang, H, Huang, Z, Huh, C, Incagli, M, Ionica, M, Jang, W, Jinchi, H, Kang, S, Kanishev, K, Kim, G, Kim, K, Kirn, T, Konak, C, Kounina, O, Kounine, A, Koutsenko, V, Krafczyk, M, LA VACCA, G, Laudi, E, Laurenti, G, Lazzizzera, I, Lebedev, A, Lee, H, Lee, S, Leluc, C, Li, H, Li, J, Li, Q, Li, T, Li, W, Li, Z, Lim, S, Lin, C, Lipari, P, Lippert, T, Liu, D, Liu, H, Lu, S, Lu, Y, Luebelsmeyer, K, Luo, F, Luo, J, Lv, S, Majka, R, Mañá, C, Marín, J, Martin, T, Martínez, G, Masi, N, Maurin, D, Menchaca Rocha, A, Meng, Q, Mo, D, Morescalchi, L, Mott, P, Nelson, T, Ni, J, Nikonov, N, Nozzoli, F, Nunes, P, Oliva, A, Orcinha, M, Palmonari, F, Palomares, C, Paniccia, M, Pauluzzi, M, Pensotti, S, Pereira, R, Picot Clemente, N, Pilo, F, Pizzolotto, C, Plyaskin, V, Pohl, M, Poireau, V, Putze, A, Quadrani, L, Qi, X, Qin, X, Qu, Z, Räihä, T, Rancoita, P, Rapin, D, Ricol, J, Rodríguez, I, Rosier Lees, S, Rozhkov, A, Rozza, D, Sagdeev, R, Sandweiss, J, Saouter, P, Schael, S, Schmidt, S, Schulz von Dratzig, A, Schwering, G, Seo, E, Shan, B, Shi, J, Siedenburg, T, Son, D, Song, J, Sun, W, Tacconi, M, Tang, X, Tang, Z, Tao, L, Tescaro, D, Ting, S, Tomassetti, N, Torsti, J, Türkoğlu, C, Urban, T, Vagelli, V, Valente, E, Vannini, C, Valtonen, E, Vázquez Acosta, M, Vecchi, M, Velasco, M, Vialle, J, Vitale, V, Vitillo, S, Wang, L, Wang, N, Wang, Q, Wang, X, Wang, Z, Wei, C, Weng, Z, Whitman, K, Wienkenhöver, J, Willenbrock, M, Wu, H, Wu, X, Xia, X, Xiong, R, Xu, W, Yan, Q, Yang, J, Yang, M, Yang, Y, Yi, H, Yu, Y, Yu, Z, Zeissler, S, Zhang, C, Zhang, J, Zhang, S, Zhang, Z, Zheng, Z, Zhu, Z, Zhuang, H, Zhukov, V, Zichichi, A, Zimmermann, N, Zuccon, P, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, LA VACCA, GIUSEPPE, PENSOTTI, SIMONETTA, ROZZA, DAVIDE, TACCONI, MAURO, and Zuccon, P.
Abstract: A precision measurement by AMS of the antiproton flux and the antiproton-to-proton flux ratio in primary cosmic rays in the absolute rigidity range from 1 to 450 GV is presented based on 3.49×105 antiproton events and 2.42×109 proton events. The fluxes and flux ratios of charged elementary particles in cosmic rays are also presented. In the absolute rigidity range ∼60 to ∼500 GV, the antiproton p, proton p, and positron e+ fluxes are found to have nearly identical rigidity dependence and the electron e- flux exhibits a different rigidity dependence. Below 60 GV, the (p/p), (p/e+), and (p/e+) flux ratios each reaches a maximum. From ∼60 to ∼500 GV, the (p/p), (p/e+), and (p/e+) flux ratios show no rigidity dependence. These are new observations of the properties of elementary particles in the cosmos.
Published: 2016

8. A charge sensitive preamplifier made with SiGe bipolar transistors

Author: Arnaboldi, Claudio, Boella, Giuliano, and Pessina, Gianluigi
Published: 2004
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9. First Result from the Alpha Magnetic Spectrometer on the International Space Station: Precision Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5–350 GeV

Author: Aguilar, M, Alberti, G, Alpat, B, Alvino, A, Ambrosi, G, Andeen, K, Anderhub, H, Arruda, L, Azzarello, P, Bachlechner, A, Barao, F, Baret, B, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Basili, A, Batalha, L, Bates, J, Battiston, R, Bazo, J, Becker, R, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Berges, P, Bertucci, B, Bigongiari, G, Biland, A, Bindi, V, Bizzaglia, S, de Boer, W, Bollweg, K, Bolmont, J, Borgia, B. Borsini, S, Boschini, MJ, Boudoul, G, Bourquin, M, Brun, P, Buenerd, M, Burger, J, Burger, W, Cadoux, F, Cai, XD, Capell, M, Casadei, D, Casaus, J, Cascioli, V, Castellini, G, Cernuda, I, Cervelli, F, Chae, MJ, Chang, YH, Chen, AI, Chen, CR, Chen, H, Cheng, GM, Chen, HS, Cheng, L, Chernoplyiokov, N, Chikanian, A, Choumilov, E, Choutko, V, Chung, CH, Clark, C, Clavero, R, Coignet, G, Commichau, V, Consolandi, C, Contin, A, Corti, C, Dios, MT, Costado Coste, B, Crespo, D, Cui, Z, Dai, M, Delgado, C, Della Torre, S, Demirkoz, B, Dennett, P, Derome, L, Di Falco, S, Diao, XH, Diago, A, Djambazov, L, Diaz, C, von Doetinchem, P, Du, WJ, Dubois, JM, Duperay, R, Duranti, M, D'Urso, D, Egorov, A, Eline, A, Eppling, FJ, Eronen, T, van Es, J, Esser, H, Falvard, A, Fiandrini, E, Fiasson, A, Finch, E, Fisher, P, Flood, K, Foglio, R, Fohey, M, Fopp, S, Fouque, N, Galaktionov, Y, Gallilee, M, Gallin Martel, L, Gallucci, G, Garcia, B, Garcia, J, Garcia Lopez, R, Garcia Tabares, L, Gargiulo, C, Gast, H, Gebauer, I, Gentile, S, Gillard, W, Giovacchini, F, Girard, L, Goglov, P, Gong, J, Goy Henningsen, C, Grandi, D, Graziani, M, Grechko, A, Gross, A, Guerri, I, de la Guia, C, Guo, KH, Habiby, M, Haino, S, Hauler, F, He, ZH, Heil, M, Heilig, J, Hermel, R, Hofer, H, Huang, ZC, Hungerford, W, Incagli, M, Ionica, M, Jacholkowska, A, Jang, WY, Jinchi, H, Jongmanns, M, Journet, L, Jungermann, L, Karpinski, W, Kim, GN, Kim, KS, Kirn, Th, Kossakowski, R, Koulemzine, A, Kounina, O, Kounine, A, Koutsenko, V, Krafczyk, MS, Laudi, E, Laurenti, G, Lauritzen, C, Lebedev, A, Lee, MW, Lee, SC, Leluc, C, Vargas, HL, Lepareur, V, Li, JQ, Li, Q, Li, TX, Li, W, Li, ZH, Lipari, P, Lin, CH, Liu, D, Liu, H, Lomtadze, T, Lu, YS, Lucidi, S, Luebelsmeyer, K, Luo, JZ, Lustermann, W, Lv, S, Madsen, J, Majka, R, Malinin, A, Mana, C, Marin, J, Martin, T, Martinez, G, Masciocchi, F, Masi, N, Maurin, D, McInturff, A, McIntyre, P, Menchaca Rocha, A, Meng, Q, Menichelli, M, Mereu, I, Millinger, M, Mo, DC, Molina, M, Mott, P, Mujunen, A, Natale, S, Nemeth, P, Ni, JQ, Nikonov, N, Nozzoli, F, Nunes, P, Obermeier, A, Oh, S, Oliva, A, Palmonari, F, Palomares, C, Paniccia, M, Papi, A, Park, WH, Pauluzzi, M, Pauss, F, Pauw, A, Pedreschi, E, Pereira, R, Perrin, E, Pierschel, G, Pilo, F, Piluso, A, Pizzolotto, C, Plyaskin, V, Pochon, J, Pohl, M, Poireau, V, Porter, S, Pouxe, J, Putze, A, Quadrani, L, Qi, XN, Rancoita, PG, Rapin, D, Ren, ZL, Ricol, JS, Riihonen, E, Rodriguez, I, Roeser, U, Rosier Lees, S, Rossi, L, Rozhkov, A, ROZZA, DAVIDE, Sabellek, A, Sagdeev, R, Sandweiss, J, Santos, B, Saouter, P, Sarchioni, M, Schael, S, Schinzel, D, Schmanau, M, Schwering, G, von Dratzig, AS, Scolieri, G, Seo, ES, Shan, BS, Shi, JY, Shi, YM, Siedenburg, T, Siedling, R, Son, D, Spada, F, Spinella, F, Steuer, M, Stiff, K, Sun, W, Sun, WH, Sun, XH, Tang, CP, Tang, XW, Tang, ZC, Tao, L, Tassan Viol, J, Ting, Samuel CC, Ting, SM, Titus, C, Tomassetti, N, Toral, F, Torsti, J, Tsai, JR, Tutt, JC, Ulbricht, J, Urban, T, Vagelli, V, Valente, E, Vannini, C, Valtonen, E, Trevino, MV, Vaurynovich, S, Vecchi, M, Vergain, M, Verlaat, B, Vescovi, C, Vialle, JP, Viertel, G, Volpini, G, Wang, D, Wang, NH, Wang, QL, Wang, RS, Wang, X, Wang, ZX, Wallraff, W, Weng, ZL, Willenbrock, M, Wlochal, M, Wu, H, Wu, KY, Wu, ZS, Xiao, WJ, Xie, S, Xiong, RQ, Xin, GM, Xu, NS, Xu, W, Yan, Q, Yang, J, Yang, M, Ye, QH, Yi, H, Yu, YJ, Yu, ZQ, Zeissler, S, Zhang, JG, Zhang, Z, Zhang, MM, Zheng, ZM, Zhuang, HL, Zhukov, V, Zichichi, A, Zuccon, P, Zurbach, C., BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, PESSINA, GIANLUIGI EZIO, TACCONI, MAURO, M. Aguilar, G. Alberti, B. Alpat, A. Alvino, G. Ambrosi, K. Andeen, H. Anderhub, L. Arruda, P. Azzarello, A. Bachlechner, F. Barao, B. Baret, A. Barrau, L. Barrin, A. Bartoloni, L. Basara, A. Basili, L. Batalha, J. Bate, R. Battiston, J. Bazo, R. Becker, U. Becker, M. Behlmann, B. Beischer, J. Berdugo, P. Berge, B. Bertucci, G. Bigongiari, A. Biland, V. Bindi, S. Bizzaglia, G. Boella, W. de Boer, K. Bollweg, J. Bolmont, B. Borgia, S. Borsini, M. J. Boschini, G. Boudoul, M. Bourquin, P. Brun, M. Buénerd, J. Burger, W. Burger, F. Cadoux, X. D. Cai, M. Capell, D. Casadei, J. Casau, V. Cascioli, G. Castellini, I. Cernuda, F. Cervelli, M. J. Chae, Y. H. Chang, A. I. Chen, C. R. Chen, H. Chen, G. M. Cheng, H. S. Chen, L. Cheng, N. Chernoplyiokov, A. Chikanian, E. Choumilov, V. Choutko, C. H. Chung, C. Clark, R. Clavero, G. Coignet, V. Commichau, C. Consolandi, A. Contin, C. Corti, M. T. Costado Dio, B. Coste, D. Crespo, Z. Cui, M. Dai, C. Delgado, S. Della Torre, B. Demirkoz, P. Dennett, L. Derome, S. Di Falco, X. H. Diao, A. Diago, L. Djambazov, C. Díaz, P. von Doetinchem, W. J. Du, J. M. Duboi, R. Duperay, M. Duranti, D. D’Urso, A. Egorov, A. Eline, F. J. Eppling, T. Eronen, J. van E, H. Esser, A. Falvard, E. Fiandrini, A. Fiasson, E. Finch, P. Fisher, K. Flood, R. Foglio, M. Fohey, S. Fopp, N. Fouque, Y. Galaktionov, M. Gallilee, L. Gallin-Martel, G. Gallucci, B. García, J. García, R. García-López, L. García-Tabare, C. Gargiulo, H. Gast, I. Gebauer, S. Gentile, M. Gervasi, W. Gillard, F. Giovacchini, L. Girard, P. Goglov, J. Gong, C. Goy-Henningsen, D. Grandi, M. Graziani, A. Grechko, A. Gro, I. Guerri, C. de la Guía, K. H. Guo, M. Habiby, S. Haino, F. Hauler, Z. H. He, M. Heil, J. Heilig, R. Hermel, H. Hofer, Z. C. Huang, W. Hungerford, M. Incagli, M. Ionica, A. Jacholkowska, W. Y. Jang, H. Jinchi, M. Jongmann, L. Journet, L. Jungermann, W. Karpinski, G. N. Kim, K. S. Kim, Th. Kirn, R. Kossakowski, A. Koulemzine, O. Kounina, A. Kounine, V. Koutsenko, M. S. Krafczyk, E. Laudi, G. Laurenti, C. Lauritzen, A. Lebedev, M. W. Lee, S. C. Lee, C. Leluc, H. León Varga, V. Lepareur, J. Q. Li, Q. Li, T. X. Li, W. Li, Z. H. Li, P. Lipari, C. H. Lin, D. Liu, H. Liu, T. Lomtadze, Y. S. Lu, S. Lucidi, K. Lübelsmeyer, J. Z. Luo, W. Lustermann, S. Lv, J. Madsen, R. Majka, A. Malinin, C. Mañá, J. Marín, T. Martin, G. Martínez, F. Masciocchi, N. Masi, D. Maurin, A. McInturff, P. McIntyre, A. Menchaca-Rocha, Q. Meng, M. Menichelli, I. Mereu, M. Millinger, D. C. Mo, M. Molina, P. Mott, A. Mujunen, S. Natale, P. Nemeth, J. Q. Ni, N. Nikonov, F. Nozzoli, P. Nune, A. Obermeier, S. Oh, A. Oliva, F. Palmonari, C. Palomare, M. Paniccia, A. Papi, W. H. Park, M. Pauluzzi, F. Pau, A. Pauw, E. Pedreschi, S. Pensotti, R. Pereira, E. Perrin, G. Pessina, G. Pierschel, F. Pilo, A. Piluso, C. Pizzolotto, V. Plyaskin, J. Pochon, M. Pohl, V. Poireau, S. Porter, J. Pouxe, A. Putze, L. Quadrani, X. N. Qi, P. G. Rancoita, D. Rapin, Z. L. Ren, J. S. Ricol, E. Riihonen, I. Rodríguez, U. Roeser, S. Rosier-Lee, L. Rossi, A. Rozhkov, D. Rozza, A. Sabellek, R. Sagdeev, J. Sandwei, B. Santo, P. Saouter, M. Sarchioni, S. Schael, D. Schinzel, M. Schmanau, G. Schwering, A. Schulz von Dratzig, G. Scolieri, E. S. Seo, B. S. Shan, J. Y. Shi, Y. M. Shi, T. Siedenburg, R. Siedling, D. Son, F. Spada, F. Spinella, M. Steuer, K. Stiff, W. Sun, W. H. Sun, X. H. Sun, M. Tacconi, C. P. Tang, X. W. Tang, Z. C. Tang, L. Tao, J. Tassan-Viol, Samuel C. C. Ting, S. M. Ting, C. Titu, N. Tomassetti, F. Toral, J. Torsti, J. R. Tsai, J. C. Tutt, J. Ulbricht, T. Urban, V. Vagelli, E. Valente, C. Vannini, E. Valtonen, M. Vargas Trevino, S. Vaurynovich, M. Vecchi, M. Vergain, B. Verlaat, C. Vescovi, J. P. Vialle, G. Viertel, G. Volpini, D. Wang, N. H. Wang, Q. L. Wang, R. S. Wang, X. Wang, Z. X. Wang, W. Wallraff, Z. L. Weng, M. Willenbrock, M. Wlochal, H. Wu, K. Y. Wu, Z. S. Wu, W. J. Xiao, S. Xie, R. Q. Xiong, G. M. Xin, N. S. Xu, W. Xu, Q. Yan, J. Yang, M. Yang, Q. H. Ye, H. Yi, Y. J. Yu, Z. Q. Yu, S. Zeissler, J. G. Zhang, Z. Zhang, M. M. Zhang, Z. M. Zheng, H. L. Zhuang, V. Zhukov, A. Zichichi, P. Zuccon, C. Zurbach, Azzarello, Philipp, Bourquin, Maurice, Cadoux, Franck, Habiby Alaoui, Marion, Leluc, Catherine, Masciocchi, Florian, Paniccia, Mercedes, Perrin, Eric, Pohl, Martin, Rapin, Divic Jean, Saouter, Pierre, Metsähovi Radio Observatory, Aalto-yliopisto, Aalto University, OpenMETU, CERN [Genève], Centro de Investigaciones Energéticas Medioambientales y Tecnológicas [Madrid] (CIEMAT), Istituto Nazionale di Fisica Nucleare, Sezione di Perugia (INFN, Sezione di Perugia), Istituto Nazionale di Fisica Nucleare (INFN), Karlsruhe Institute of Technology (KIT), Institute for Theoretical Physics [ETH Zürich] (ITP), Department of Physics [ETH Zürich] (D-PHYS), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich)- Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), RWTH Aachen University, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Massachusetts Institute of Technology (MIT), Laboratoire Univers et Particules de Montpellier (LUPM), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Montpellier 2 - Sciences et Techniques (UM2), Département de Physique Nucléaire et Corpusculaire [Genève] (DPNC), Université de Genève (UNIGE), Istituto Nazionale di Fisica Nucleare, Sezione di Bologna (INFN, Sezione di Bologna), Instituto de Astrofisica de Canarias (IAC), Instituto de Matematicas (UNAM), Universidad Nacional Autónoma de México (UNAM), Istituto Nazionale di Fisica Nucleare [Sezione di Roma 1] (INFN), Istituto Nazionale di Fisica Nucleare, INFN Sezione di Pisa (INFN Sezione di Pisa), Istituto Nazionale di Fisica Nucleare, Sezione di Milano (INFN), AMS, Aguilar, M, Alberti, G, Alpat, B, Alvino, A, Ambrosi, G, Andeen, K, Anderhub, H, Arruda, L, Azzarello, P, Bachlechner, A, Barao, F, Baret, B, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Basili, A, Batalha, L, Bates, J, Battiston, R, Bazo, J, Becker, R, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Berges, P, Bertucci, B, Bigongiari, G, Biland, A, Bindi, V, Bizzaglia, S, Boella, G, de Boer, W, Bollweg, K, Bolmont, J, Borgia, B., B, S, Boschini, M, Boudoul, G, Bourquin, M, Brun, P, Buenerd, M, Burger, J, Burger, W, Cadoux, F, Cai, X, Capell, M, Casadei, D, Casaus, J, Cascioli, V, Castellini, G, Cernuda, I, Cervelli, F, Chae, M, Chang, Y, Chen, A, Chen, C, Chen, H, Cheng, G, Cheng, L, Chernoplyiokov, N, Chikanian, A, Choumilov, E, Choutko, V, Chung, C, Clark, C, Clavero, R, Coignet, G, Commichau, V, Consolandi, C, Contin, A, Corti, C, Dios, M, Costado Coste, B, Crespo, D, Cui, Z, Dai, M, Delgado, C, Della Torre, S, Demirkoz, B, Dennett, P, Derome, L, Di Falco, S, Diao, X, Diago, A, Djambazov, L, Diaz, C, von Doetinchem, P, Du, W, Dubois, J, Duperay, R, Duranti, M, D'Urso, D, Egorov, A, Eline, A, Eppling, F, Eronen, T, van Es, J, Esser, H, Falvard, A, Fiandrini, E, Fiasson, A, Finch, E, Fisher, P, Flood, K, Foglio, R, Fohey, M, Fopp, S, Fouque, N, Galaktionov, Y, Gallilee, M, Gallin Martel, L, Gallucci, G, Garcia, B, Garcia, J, Garcia Lopez, R, Garcia Tabares, L, Gargiulo, C, Gast, H, Gebauer, I, Gentile, S, Gervasi, M, Gillard, W, Giovacchini, F, Girard, L, Goglov, P, Gong, J, Goy Henningsen, C, Grandi, D, Graziani, M, Grechko, A, Gross, A, Guerri, I, de la Guia, C, Guo, K, Habiby, M, Haino, S, Hauler, F, He, Z, Heil, M, Heilig, J, Hermel, R, Hofer, H, Huang, Z, Hungerford, W, Incagli, M, Ionica, M, Jacholkowska, A, Jang, W, Jinchi, H, Jongmanns, M, Journet, L, Jungermann, L, Karpinski, W, Kim, G, Kim, K, Kirn, T, Kossakowski, R, Koulemzine, A, Kounina, O, Kounine, A, Koutsenko, V, Krafczyk, M, Laudi, E, Laurenti, G, Lauritzen, C, Lebedev, A, Lee, M, Lee, S, Leluc, C, Vargas, H, Lepareur, V, Li, J, Li, Q, Li, T, Li, W, Li, Z, Lipari, P, Lin, C, Liu, D, Liu, H, Lomtadze, T, Lu, Y, Lucidi, S, Luebelsmeyer, K, Luo, J, Lustermann, W, Lv, S, Madsen, J, Majka, R, Malinin, A, Mana, C, Marin, J, Martin, T, Martinez, G, Masciocchi, F, Masi, N, Maurin, D, Mcinturff, A, Mcintyre, P, Menchaca Rocha, A, Meng, Q, Menichelli, M, Mereu, I, Millinger, M, Mo, D, Molina, M, Mott, P, Mujunen, A, Natale, S, Nemeth, P, Ni, J, Nikonov, N, Nozzoli, F, Nunes, P, Obermeier, A, Oh, S, Oliva, A, Palmonari, F, Palomares, C, Paniccia, M, Papi, A, Park, W, Pauluzzi, M, Pauss, F, Pauw, A, Pedreschi, E, Pensotti, S, Pereira, R, Perrin, E, Pessina, G, Pierschel, G, Pilo, F, Piluso, A, Pizzolotto, C, Plyaskin, V, Pochon, J, Pohl, M, Poireau, V, Porter, S, Pouxe, J, Putze, A, Quadrani, L, Qi, X, Rancoita, P, Rapin, D, Ren, Z, Ricol, J, Riihonen, E, Rodriguez, I, Roeser, U, Rosier Lees, S, Rossi, L, Rozhkov, A, Rozza, D, Sabellek, A, Sagdeev, R, Sandweiss, J, Santos, B, Saouter, P, Sarchioni, M, Schael, S, Schinzel, D, Schmanau, M, Schwering, G, von Dratzig, A, Scolieri, G, Seo, E, Shan, B, Shi, J, Shi, Y, Siedenburg, T, Siedling, R, Son, D, Spada, F, Spinella, F, Steuer, M, Stiff, K, Sun, W, Sun, X, Tacconi, M, Tang, C, Tang, X, Tang, Z, Tao, L, Tassan Viol, J, Ting, S, Titus, C, Tomassetti, N, Toral, F, Torsti, J, Tsai, J, Tutt, J, Ulbricht, J, Urban, T, Vagelli, V, Valente, E, Vannini, C, Valtonen, E, Trevino, M, Vaurynovich, S, Vecchi, M, Vergain, M, Verlaat, B, Vescovi, C, Vialle, J, Viertel, G, Volpini, G, Wang, D, Wang, N, Wang, Q, Wang, R, Wang, X, Wang, Z, Wallraff, W, Weng, Z, Willenbrock, M, Wlochal, M, Wu, H, Wu, K, Wu, Z, Xiao, W, Xie, S, Xiong, R, Xin, G, Xu, N, Xu, W, Yan, Q, Yang, J, Yang, M, Ye, Q, Yi, H, Yu, Y, Yu, Z, Zeissler, S, Zhang, J, Zhang, Z, Zhang, M, Zheng, Z, Zhuang, H, Zhukov, V, Zichichi, A, Zuccon, P, and Zurbach, C
Subjects: [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Astrophysics::High Energy Astrophysical Phenomena, education, Dark matter, General Physics and Astronomy, Electrons, Cosmic ray, ddc:500.2, Electron, 01 natural sciences, and other elementary particle detectors, cosmic ray detectors, Nuclear physics, Physics and Astronomy (all), Positron, cosmic rays, muon, Neutrino, 0103 physical sciences, Alpha Magnetic Spectrometer, 010306 general physics, Anisotropy, Physics, Range (particle radiation), ta115, ta213, ta114, Cosmic rays, positron fraction, space experiments, 010308 nuclear & particles physics, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], pion, Observable, energy spectra and interactions, pion, and other elementary particle detectors, ELECTRONS, cosmic rays, dark matter, Physics::Accelerator Physics, High Energy Physics::Experiment, Composition
Abstract: A precision measurement by the Alpha Magnetic Spectrometer on the International Space Station of the positron fraction in primary cosmic rays in the energy range from 0.5 to 350 GeV based on 6.8 x 10(6) positron and electron events is presented. The very accurate data show that the positron fraction is steadily increasing from 10 to similar to 250 GeV, but, from 20 to 250 GeV, the slope decreases by an order of magnitude. The positron fraction spectrum shows no fine structure, and the positron to electron ratio shows no observable anisotropy. Together, these features show the existence of new physical phenomena. DOI: 10.1103/PhysRevLett.110.141102
Published: 2013
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10. Precision Measurement of the Helium Flux in Primary Cosmic Rays of Rigidities 1.9 GV to 3 TV with the Alpha Magnetic Spectrometer on the International Space Station

Author: Aguilar, M, Aisa, D, Alpat, B, Alvino, A, Ambrosi, G, Andeen, K, Arruda, L, Attig, N, Azzarello, P, Bachlechner, A, Barao, F, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Battarbee, M, Battiston, R, Bazo, J, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Bertucci, B, Bindi, V, Bizzaglia, S, Bizzarri, M, Boella, G, de Boer, W, Bollweg, K, Bonnivard, V, Borgia, B, Borsini, S, Boschini, M, Bourquin, M, Burger, J, Cadoux, F, Cai, X, Capell, M, Caroff, S, Casaus, J, Castellini, G, Cernuda, I, Cerreta, D, Cervelli, F, Chae, M, Chang, Y, Chen, A, Chen, G, Chen, H, Cheng, L, Chou, H, Choumilov, E, Choutko, V, Chung, C, Clark, C, Clavero, R, Coignet, G, Consolandi, C, Contin, A, Corti, C, Gil, E, Coste, B, Creus, W, Crispoltoni, M, Cui, Z, Dai, Y, Delgado, C, Della Torre, S, Demirköz, M, Derome, L, Di Falco, S, Di Masso, L, Dimiccoli, F, Díaz, C, von Doetinchem, P, Donnini, F, Duranti, M, D’Urso, D, Egorov, A, Eline, A, Eppling, F, Eronen, T, Fan, Y, Farnesini, L, Feng, J, Fiandrini, E, Fiasson, A, Finch, E, Fisher, P, Formato, V, Galaktionov, Y, Gallucci, G, García, B, García López, R, Gargiulo, C, Gast, H, Gebauer, I, Gervasi, M, Ghelfi, A, Giovacchini, F, Goglov, P, Gong, J, Goy, C, Grabski, V, Grandi, D, Graziani, M, Guandalini, C, Guerri, I, Guo, K, Haas, D, Habiby, M, Haino, S, Han, K, He, Z, Heil, M, Hoffman, J, Hsieh, T, Huang, Z, Huh, C, Incagli, M, Ionica, M, Jang, W, Jinchi, H, Kanishev, K, Kim, G, Kim, K, Kirn, T, Korkmaz, M, Kossakowski, R, Kounina, O, Kounine, A, Koutsenko, V, Krafczyk, M, LA VACCA, G, Laudi, E, Laurenti, G, Lazzizzera, I, Lebedev, A, Lee, H, Lee, S, Leluc, C, Li, H, Li, J, Li, Q, Li, T, Li, W, Li, Y, Li, Z, Lim, S, Lin, C, Lipari, P, Lippert, T, Liu, D, Liu, H, Lolli, M, Lomtadze, T, Lu, M, Lu, S, Lu, Y, Luebelsmeyer, K, Luo, F, Luo, J, Lv, S, Majka, R, Mañá, C, Marín, J, Martin, T, Martínez, G, Masi, N, Maurin, D, Menchaca Rocha, A, Meng, Q, Mo, D, Morescalchi, L, Mott, P, Müller, M, Nelson, T, Ni, J, Nikonov, N, Nozzoli, F, Nunes, P, Obermeier, A, Oliva, A, Orcinha, M, Palmonari, F, Palomares, C, Paniccia, M, Papi, A, Pauluzzi, M, Pedreschi, E, Pensotti, S, Pereira, R, Picot Clemente, N, Pilo, F, Piluso, A, Pizzolotto, C, Plyaskin, V, Pohl, M, Poireau, V, Putze, A, Quadrani, L, Qi, X, Qin, X, Qu, Z, Räihä, T, Rancoita, P, Rapin, D, Ricol, J, Rodríguez, I, Rosier Lees, S, Rozhkov, A, Rozza, D, Sagdeev, R, Sandweiss, J, Saouter, P, Schael, S, Schmidt, S, von Dratzig, A, Schwering, G, Scolieri, G, Seo, E, Shan, B, Shan, Y, Shi, J, Shi, X, Shi, Y, Siedenburg, T, Son, D, Song, J, Spada, F, Spinella, F, Sun, W, Tacconi, M, Tang, C, Tang, X, Tang, Z, Tao, L, Tescaro, D, Ting, S, Tomassetti, N, Torsti, J, Türkoğlu, C, Urban, T, Vagelli, V, Valente, E, Vannini, C, Valtonen, E, Vaurynovich, S, Vecchi, M, Velasco, M, Vialle, J, Vitale, V, Vitillo, S, Wang, L, Wang, N, Wang, Q, Wang, R, Wang, X, Wang, Z, Weng, Z, Whitman, K, Wienkenhöver, J, Willenbrock, M, Wu, H, Wu, X, Xia, X, Xie, M, Xie, S, Xiong, R, Xu, N, Xu, W, Yan, Q, Yang, J, Yang, M, Yang, Y, Ye, Q, Yi, H, Yu, Y, Yu, Z, Zeissler, S, Zhang, C, Zhang, J, Zhang, M, Zhang, S, Zhang, X, Zhang, Z, Zheng, Z, Zhuang, H, Zhukov, V, Zichichi, A, Zimmermann, N, Zuccon, P, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, LA VACCA, GIUSEPPE, PENSOTTI, SIMONETTA, ROZZA, DAVIDE, TACCONI, MAURO, Zuccon, P., Aguilar, M, Aisa, D, Alpat, B, Alvino, A, Ambrosi, G, Andeen, K, Arruda, L, Attig, N, Azzarello, P, Bachlechner, A, Barao, F, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Battarbee, M, Battiston, R, Bazo, J, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Bertucci, B, Bindi, V, Bizzaglia, S, Bizzarri, M, Boella, G, de Boer, W, Bollweg, K, Bonnivard, V, Borgia, B, Borsini, S, Boschini, M, Bourquin, M, Burger, J, Cadoux, F, Cai, X, Capell, M, Caroff, S, Casaus, J, Castellini, G, Cernuda, I, Cerreta, D, Cervelli, F, Chae, M, Chang, Y, Chen, A, Chen, G, Chen, H, Cheng, L, Chou, H, Choumilov, E, Choutko, V, Chung, C, Clark, C, Clavero, R, Coignet, G, Consolandi, C, Contin, A, Corti, C, Gil, E, Coste, B, Creus, W, Crispoltoni, M, Cui, Z, Dai, Y, Delgado, C, Della Torre, S, Demirköz, M, Derome, L, Di Falco, S, Di Masso, L, Dimiccoli, F, Díaz, C, von Doetinchem, P, Donnini, F, Duranti, M, D’Urso, D, Egorov, A, Eline, A, Eppling, F, Eronen, T, Fan, Y, Farnesini, L, Feng, J, Fiandrini, E, Fiasson, A, Finch, E, Fisher, P, Formato, V, Galaktionov, Y, Gallucci, G, García, B, García López, R, Gargiulo, C, Gast, H, Gebauer, I, Gervasi, M, Ghelfi, A, Giovacchini, F, Goglov, P, Gong, J, Goy, C, Grabski, V, Grandi, D, Graziani, M, Guandalini, C, Guerri, I, Guo, K, Haas, D, Habiby, M, Haino, S, Han, K, He, Z, Heil, M, Hoffman, J, Hsieh, T, Huang, Z, Huh, C, Incagli, M, Ionica, M, Jang, W, Jinchi, H, Kanishev, K, Kim, G, Kim, K, Kirn, T, Korkmaz, M, Kossakowski, R, Kounina, O, Kounine, A, Koutsenko, V, Krafczyk, M, LA VACCA, G, Laudi, E, Laurenti, G, Lazzizzera, I, Lebedev, A, Lee, H, Lee, S, Leluc, C, Li, H, Li, J, Li, Q, Li, T, Li, W, Li, Y, Li, Z, Lim, S, Lin, C, Lipari, P, Lippert, T, Liu, D, Liu, H, Lolli, M, Lomtadze, T, Lu, M, Lu, S, Lu, Y, Luebelsmeyer, K, Luo, F, Luo, J, Lv, S, Majka, R, Mañá, C, Marín, J, Martin, T, Martínez, G, Masi, N, Maurin, D, Menchaca Rocha, A, Meng, Q, Mo, D, Morescalchi, L, Mott, P, Müller, M, Nelson, T, Ni, J, Nikonov, N, Nozzoli, F, Nunes, P, Obermeier, A, Oliva, A, Orcinha, M, Palmonari, F, Palomares, C, Paniccia, M, Papi, A, Pauluzzi, M, Pedreschi, E, Pensotti, S, Pereira, R, Picot Clemente, N, Pilo, F, Piluso, A, Pizzolotto, C, Plyaskin, V, Pohl, M, Poireau, V, Putze, A, Quadrani, L, Qi, X, Qin, X, Qu, Z, Räihä, T, Rancoita, P, Rapin, D, Ricol, J, Rodríguez, I, Rosier Lees, S, Rozhkov, A, Rozza, D, Sagdeev, R, Sandweiss, J, Saouter, P, Schael, S, Schmidt, S, von Dratzig, A, Schwering, G, Scolieri, G, Seo, E, Shan, B, Shan, Y, Shi, J, Shi, X, Shi, Y, Siedenburg, T, Son, D, Song, J, Spada, F, Spinella, F, Sun, W, Tacconi, M, Tang, C, Tang, X, Tang, Z, Tao, L, Tescaro, D, Ting, S, Tomassetti, N, Torsti, J, Türkoğlu, C, Urban, T, Vagelli, V, Valente, E, Vannini, C, Valtonen, E, Vaurynovich, S, Vecchi, M, Velasco, M, Vialle, J, Vitale, V, Vitillo, S, Wang, L, Wang, N, Wang, Q, Wang, R, Wang, X, Wang, Z, Weng, Z, Whitman, K, Wienkenhöver, J, Willenbrock, M, Wu, H, Wu, X, Xia, X, Xie, M, Xie, S, Xiong, R, Xu, N, Xu, W, Yan, Q, Yang, J, Yang, M, Yang, Y, Ye, Q, Yi, H, Yu, Y, Yu, Z, Zeissler, S, Zhang, C, Zhang, J, Zhang, M, Zhang, S, Zhang, X, Zhang, Z, Zheng, Z, Zhuang, H, Zhukov, V, Zichichi, A, Zimmermann, N, Zuccon, P, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, LA VACCA, GIUSEPPE, PENSOTTI, SIMONETTA, ROZZA, DAVIDE, TACCONI, MAURO, and Zuccon, P.
Abstract: Knowledge of the precise rigidity dependence of the helium flux is important in understanding the origin, acceleration, and propagation of cosmic rays. A precise measurement of the helium flux in primary cosmic rays with rigidity (momentum/charge) from 1.9 GV to 3 TV based on 50 million events is presented and compared to the proton flux. The detailed variation with rigidity of the helium flux spectral index is presented for the first time. The spectral index progressively hardens at rigidities larger than 100 GV. The rigidity dependence of the helium flux spectral index is similar to that of the proton spectral index though the magnitudes are different. Remarkably, the spectral index of the proton to helium flux ratio increases with rigidity up to 45 GV and then becomes constant; the flux ratio above 45 GV is well described by a single power law.
Published: 2015

11. Precision Measurement of the Proton Flux in Primary Cosmic Rays from Rigidity 1 GV to 1.8 TV with the Alpha Magnetic Spectrometer on the International Space Station

Author: Aguilar, M, Aisa, D, Alpat, B, Alvino, A, Ambrosi, G, Andeen, K, Arruda, L, Attig, N, Azzarello, P, Bachlechner, A, Barao, F, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Battarbee, M, Battiston, R, Bazo, J, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Bertucci, B, Bigongiari, G, Bindi, V, Bizzaglia, S, Bizzarri, M, Boella, G, de Boer, W, Bollweg, K, Bonnivard, V, Borgia, B, Borsini, S, Boschini, M, Bourquin, M, Burger, J, Cadoux, F, Cai, X, Capell, M, Caroff, S, Casaus, J, Cascioli, V, Castellini, G, Cernuda, I, Cerreta, D, Cervelli, F, Chae, M, Chang, Y, Chen, A, Chen, H, Cheng, G, Cheng, L, Chou, H, Choumilov, E, Choutko, V, Chung, C, Clark, C, Clavero, R, Coignet, G, Consolandi, C, Contin, A, Corti, C, Gil, E, Coste, B, Creus, W, Crispoltoni, M, Cui, Z, Dai, Y, Delgado, C, Della Torre, S, Demirköz, M, Derome, L, Di Falco, S, Di Masso, L, Dimiccoli, F, Díaz, C, von Doetinchem, P, Donnini, F, Du, W, Duranti, M, D’Urso, D, Eline, A, Eppling, F, Eronen, T, Fan, Y, Farnesini, L, Feng, J, Fiandrini, E, Fiasson, A, Finch, E, Fisher, P, Galaktionov, Y, Gallucci, G, García, B, García López, R, Gargiulo, C, Gast, H, Gebauer, I, Gervasi, M, Ghelfi, A, Gillard, W, Giovacchini, F, Goglov, P, Gong, J, Goy, C, Grabski, V, Grandi, D, Graziani, M, Guandalini, C, Guerri, I, Guo, K, Haas, D, Habiby, M, Haino, S, Han, K, He, Z, Heil, M, Hoffman, J, Hsieh, T, Huang, Z, Huh, C, Incagli, M, Ionica, M, Jang, W, Jinchi, H, Kanishev, K, Kim, G, Kim, K, Kirn, T, Kossakowski, R, Kounina, O, Kounine, A, Koutsenko, V, Krafczyk, M, LA VACCA, G, Laudi, E, Laurenti, G, Lazzizzera, I, Lebedev, A, Lee, H, Lee, S, Leluc, C, Levi, G, Li, H, Li, J, Li, Q, Li, T, Li, W, Li, Y, Li, Z, Lim, S, Lin, C, Lipari, P, Lippert, T, Liu, D, Liu, H, Lolli, M, Lomtadze, T, Lu, M, Lu, S, Lu, Y, Luebelsmeyer, K, Luo, J, Lv, S, Majka, R, Mañá, C, Marín, J, Martin, T, Martínez, G, Masi, N, Maurin, D, Menchaca Rocha, A, Meng, Q, Mo, D, Morescalchi, L, Mott, P, Müller, M, Ni, J, Nikonov, N, Nozzoli, F, Nunes, P, Obermeier, A, Oliva, A, Orcinha, M, Palmonari, F, Palomares, C, Paniccia, M, Papi, A, Pauluzzi, M, Pedreschi, E, Pensotti, S, Pereira, R, Picot Clemente, N, Pilo, F, Piluso, A, Pizzolotto, C, Plyaskin, V, Pohl, M, Poireau, V, Postaci, E, Putze, A, Quadrani, L, Qi, X, Qin, X, Qu, Z, Räihä, T, Rancoita, P, Rapin, D, Ricol, J, Rodríguez, I, Rosier Lees, S, Rozhkov, A, Rozza, D, Sagdeev, R, Sandweiss, J, Saouter, P, Sbarra, C, Schael, S, Schmidt, S, von Dratzig, A, Schwering, G, Scolieri, G, Seo, E, Shan, B, Shan, Y, Shi, J, Shi, X, Shi, Y, Siedenburg, T, Son, D, Spada, F, Spinella, F, Sun, W, Tacconi, M, Tang, C, Tang, X, Tang, Z, Tao, L, Tescaro, D, Ting, S, Tomassetti, N, Torsti, J, Türkoğlu, C, Urban, T, Vagelli, V, Valente, E, Vannini, C, Valtonen, E, Vaurynovich, S, Vecchi, M, Velasco, M, Vialle, J, Vitale, V, Vitillo, S, Wang, L, Wang, N, Wang, Q, Wang, R, Wang, X, Wang, Z, Weng, Z, Whitman, K, Wienkenhöver, J, Wu, H, Wu, X, Xia, X, Xie, M, Xie, S, Xiong, R, Xin, G, Xu, N, Xu, W, Yan, Q, Yang, J, Yang, M, Ye, Q, Yi, H, Yu, Y, Yu, Z, Zeissler, S, Zhang, J, Zhang, M, Zhang, X, Zhang, Z, Zheng, Z, Zhuang, H, Zhukov, V, Zichichi, A, Zimmermann, N, Zuccon, P, Zurbach, C, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, LA VACCA, GIUSEPPE, PENSOTTI, SIMONETTA, ROZZA, DAVIDE, TACCONI, MAURO, Zurbach, C., Aguilar, M, Aisa, D, Alpat, B, Alvino, A, Ambrosi, G, Andeen, K, Arruda, L, Attig, N, Azzarello, P, Bachlechner, A, Barao, F, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Battarbee, M, Battiston, R, Bazo, J, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Bertucci, B, Bigongiari, G, Bindi, V, Bizzaglia, S, Bizzarri, M, Boella, G, de Boer, W, Bollweg, K, Bonnivard, V, Borgia, B, Borsini, S, Boschini, M, Bourquin, M, Burger, J, Cadoux, F, Cai, X, Capell, M, Caroff, S, Casaus, J, Cascioli, V, Castellini, G, Cernuda, I, Cerreta, D, Cervelli, F, Chae, M, Chang, Y, Chen, A, Chen, H, Cheng, G, Cheng, L, Chou, H, Choumilov, E, Choutko, V, Chung, C, Clark, C, Clavero, R, Coignet, G, Consolandi, C, Contin, A, Corti, C, Gil, E, Coste, B, Creus, W, Crispoltoni, M, Cui, Z, Dai, Y, Delgado, C, Della Torre, S, Demirköz, M, Derome, L, Di Falco, S, Di Masso, L, Dimiccoli, F, Díaz, C, von Doetinchem, P, Donnini, F, Du, W, Duranti, M, D’Urso, D, Eline, A, Eppling, F, Eronen, T, Fan, Y, Farnesini, L, Feng, J, Fiandrini, E, Fiasson, A, Finch, E, Fisher, P, Galaktionov, Y, Gallucci, G, García, B, García López, R, Gargiulo, C, Gast, H, Gebauer, I, Gervasi, M, Ghelfi, A, Gillard, W, Giovacchini, F, Goglov, P, Gong, J, Goy, C, Grabski, V, Grandi, D, Graziani, M, Guandalini, C, Guerri, I, Guo, K, Haas, D, Habiby, M, Haino, S, Han, K, He, Z, Heil, M, Hoffman, J, Hsieh, T, Huang, Z, Huh, C, Incagli, M, Ionica, M, Jang, W, Jinchi, H, Kanishev, K, Kim, G, Kim, K, Kirn, T, Kossakowski, R, Kounina, O, Kounine, A, Koutsenko, V, Krafczyk, M, LA VACCA, G, Laudi, E, Laurenti, G, Lazzizzera, I, Lebedev, A, Lee, H, Lee, S, Leluc, C, Levi, G, Li, H, Li, J, Li, Q, Li, T, Li, W, Li, Y, Li, Z, Lim, S, Lin, C, Lipari, P, Lippert, T, Liu, D, Liu, H, Lolli, M, Lomtadze, T, Lu, M, Lu, S, Lu, Y, Luebelsmeyer, K, Luo, J, Lv, S, Majka, R, Mañá, C, Marín, J, Martin, T, Martínez, G, Masi, N, Maurin, D, Menchaca Rocha, A, Meng, Q, Mo, D, Morescalchi, L, Mott, P, Müller, M, Ni, J, Nikonov, N, Nozzoli, F, Nunes, P, Obermeier, A, Oliva, A, Orcinha, M, Palmonari, F, Palomares, C, Paniccia, M, Papi, A, Pauluzzi, M, Pedreschi, E, Pensotti, S, Pereira, R, Picot Clemente, N, Pilo, F, Piluso, A, Pizzolotto, C, Plyaskin, V, Pohl, M, Poireau, V, Postaci, E, Putze, A, Quadrani, L, Qi, X, Qin, X, Qu, Z, Räihä, T, Rancoita, P, Rapin, D, Ricol, J, Rodríguez, I, Rosier Lees, S, Rozhkov, A, Rozza, D, Sagdeev, R, Sandweiss, J, Saouter, P, Sbarra, C, Schael, S, Schmidt, S, von Dratzig, A, Schwering, G, Scolieri, G, Seo, E, Shan, B, Shan, Y, Shi, J, Shi, X, Shi, Y, Siedenburg, T, Son, D, Spada, F, Spinella, F, Sun, W, Tacconi, M, Tang, C, Tang, X, Tang, Z, Tao, L, Tescaro, D, Ting, S, Tomassetti, N, Torsti, J, Türkoğlu, C, Urban, T, Vagelli, V, Valente, E, Vannini, C, Valtonen, E, Vaurynovich, S, Vecchi, M, Velasco, M, Vialle, J, Vitale, V, Vitillo, S, Wang, L, Wang, N, Wang, Q, Wang, R, Wang, X, Wang, Z, Weng, Z, Whitman, K, Wienkenhöver, J, Wu, H, Wu, X, Xia, X, Xie, M, Xie, S, Xiong, R, Xin, G, Xu, N, Xu, W, Yan, Q, Yang, J, Yang, M, Ye, Q, Yi, H, Yu, Y, Yu, Z, Zeissler, S, Zhang, J, Zhang, M, Zhang, X, Zhang, Z, Zheng, Z, Zhuang, H, Zhukov, V, Zichichi, A, Zimmermann, N, Zuccon, P, Zurbach, C, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, LA VACCA, GIUSEPPE, PENSOTTI, SIMONETTA, ROZZA, DAVIDE, TACCONI, MAURO, and Zurbach, C.
Abstract: A precise measurement of the proton flux in primary cosmic rays with rigidity (momentum/charge) from 1 GV to 1.8 TV is presented based on 300 million events. Knowledge of the rigidity dependence of the proton flux is important in understanding the origin, acceleration, and propagation of cosmic rays. We present the detailed variation with rigidity of the flux spectral index for the first time. The spectral index progressively hardens at high rigidities.
Published: 2015

12. TRIS III: the diffuse galactic radio emission at $\delta=+42^{\circ}$

Author: Tartari, A, ZANNONI, MARIO, GERVASI, MASSIMO, BOELLA, GIULIANO FILIPPO, SIRONI, GIORGIO, Tartari, A, Zannoni, M, Gervasi, M, Boella, G, and Sironi, G
Subjects: FIS/05 - ASTRONOMIA E ASTROFISICA, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract: We present values of temperature and spectral index of the galactic diffuse radiation measured at 600 and 820 MHz along a 24 hours right ascension circle at declination $\delta = +42^{\circ}$. They have been obtained from a subset of absolute measurements of the sky temperature made with TRIS, an experiment devoted to the measurement of the Cosmic Microwave Background temperature at decimetric-wavelengths with an angular resolution of about $20^{\circ}$. Our analysis confirms the preexisting picture of the galactic diffuse emission at decimetric wavelength and improves the accuracy of the measurable quantities. In particular, the signal coming from the halo has a spectral index in the range $2.9-3.1$ above 600 MHz, depending on the sky position. In the disk, at TRIS angular resolution, the free-free emission accounts for the 11% of the overall signal at 600 MHz and 21% at 1420 MHz. The polarized component of the galactic emission, evaluated from the survey by Brouw and Spoelstra, affects the observations at TRIS angular resolution by less than 3% at 820 MHz and less than 2% at 600 MHz. Within the uncertainties, our determination of the galactic spectral index is practically unaffected by the correction for polarization. Since the overall error budget of the sky temperatures measured by TRIS at 600 MHz, that is 66 mK(systematic)$+$18 mK (statistical), is definitely smaller than those reported in previous measurements at the same frequency, our data have been used to discuss the zero levels of the sky maps at 150, 408, 820 and 1420 MHz in literature. Concerning the 408 MHz survey, limiting our attention to the patch of sky corresponding to the region observed by TRIS, we suggest a correction of the base-level of $(+3.9\pm 0.6)$K., Comment: Accepted for publication in the Astrophysical Journal
Published: 2008

13. Cosmic-ray positron fraction measurement from 1 to 30 GeV with AMS-01

Author: Aguilar, M, Alcaraz, J, Allaby, J, Alpat, B, Ambrosi, G, Anderhub, H, L. Ao, A. Arefiev, P. Azzarello, L. Baldini, M. Basile, D. Barancourt, F. Barao, G. Barbier, G. Barreira, R. Battiston, R. Becker, U. Becker, L. Bellagamba, P. Béné, J. Berdugo, P. Berges, B. Bertucci, A. Biland, S. Blasko, Boschini, M, M. Bourquin, L. Brocco, G. Bruni, M. Buénerd, J. D. Burger, W. J. Burger, X. D. Cai, C. Camps, P. Cannarsa, M. Capell, F. Cardano, D. Casadei, J. Casaus, G. Castellini, Y. H. Chang, H. F. Chen, H. S. Chen, Z. G. Chen, N. A. Chernoplekov, T. H. Chiueh, K. Cho, M. J. Choi, Y. Y. Choi, F. Cindolo, V. Commichau, A. Contin, E. Cortina Gil, M. Cristinziani, T. S. Dai, C. Delgado, S. Difalco, L. Djambazov, I. D'Antone, Z. R. Dong, P. Emonet, J. Engelberg, F. J. Eppling, T. Eronen, G. Esposito, P. Extermann, J. Favier, E. Fiandrini, P. H. Fisher, G. Flügge, N. Fouque, Y.u. Galaktionov, H. Gast, P. Giusti, Grandi, D, O. Grimm, W. Q. Gu, K. Hangarter, A. Hasan, V. Hermel, H. Hofer, W. Hungerford, M. Jongmanns, K. Karlamaa, W. Karpinski, G. Kenney, D. H. Kim, G. N. Kim, K. S. Kim, M. Y. Kim, A. Klimentov, R. Kossakowskic, A. Kouninel, V. Koutsenkol, M. Kraeberai, G. Laboriet, T. Laitinenah, G. Lamannaad, 1, E. Lanciottiz, G. Laurentij, A. Lebedevl, C. Lechanoine Lelucs, M. W. Leeo, S. C. Leeag, G. Levij, C. L. Liuy, H. T. Liui, G. Lug, Y. S. Lui, K. Lübelsmeyera, D. Luckeyl, W. Lustermannai, C. Mañaz, A. Margottij, F. Mayett, R. R. McNeild, B. Meillont, M. Menichelliad, A. Mihulk, A. Mujunenv, A. Olivaad, J. Olzema, F. Palmonarij, H. B. Parko, W. H. Parko, M. Pauluzziad, F. Paussai, E. Perrins, A. Pescij, A. Pevsnere, F. Piloae, M. Pimentax, w, V. Plyaskinac, V. Pojidaevac, M. Pohls, N. Produits, Rancoita, PG D. Rapins, F. Raupacha, D. Renai, Z. Renag, M. Ribordys, J. P. Richeuxs, E. Riihonenah, J. Ritakariv, S. Roo, U. Roeserai, C. Rossint, R. Sagdeevn, D. Santost, G. Sartorellij, C. Sbarraj, S. Schaela, A. Schultz von Dratziga, G. Schweringa, E. S. Seon, J. W. Shino, E. Shoumilovac, V. Shoutkol, T. Siedenburgl, R. Siedlinga, D. Sono, T. Songh, F. Spinellaae, M. Steuerl, G. S. Sunh, H. Suterai, X. W. Tangi, Samuel C. C. Tingl, S. M. Tingl, M. Tornikoskiv, J. Torstiah, J. Trümperq, J. Ulbrichtai, S. Urpov, E. Valtonenah, J. Vandenhirtza, E. Velikhovab, B. Verlaatai, 2, I. Vetlitskyac, F. Vezzut, J. P. Viallec, G. Viertelai, D. Vités, H. Von Guntenai, S. Waldmeier Wickiai, W. Wallraffa, B. C. Wangy, J. Z. Wangg, K. Wiikv, C. Williamsj, S. X. Wul, m, P. C. Xiah, S. Xul, J. L. Yang, L. G. Yanh, C. G. Yangi, J. Yangaf, M. Yangi, S. W. Yeu, 3, Z. Z. Xu, H. Y. Zhang, Z. P. Zhang, D. X. Zhao, Y. Zhou, G. Y. Zhu, W. Z. Zhu, H. L. Zhuang, A. Zichichi, B. Zimmermann, P. Zuccon, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, Bene, Pierre, Bourquin, Maurice, Cortina Gil, Eduardo, Cristinziani, Markus, Emonet, Pascal Philippe, Extermann, Pierre, Leluc, Catherine, Perrin, Eric, Pohl, Martin, Produit, Nicolas, Rapin, Divic Jean, Ribordy, Mathieu, Richeux, Jean-Pierre, Vite, Davide, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), AMS, M. AGUILAR, J. ALCARAZ, J. ALLABY, B. ALPAT, G. AMBROSI, H. ANDERHUB, L. AO, A. AREFIEV, P. AZZARELLO, L. BALDINI, M. BASILE, D. BARANCOURT, F. BARAO, G. BARBIER, G. BARREIRA, R. BATTISTON, R. BECKER, U. BECKER, L. BELLAGAMBA, P. BENE, J. BERDUGO, P. BERGES, B. BERTUCCI, A. BILAND, S. BLASKO, G. BOELLA, M. BOSCHINI, M. BOURQUIN, L. BROCCO, G. BRUNI, M. BUENERD, J.D. BURGER, W.J. BURGER, X.D. CAI, C. CAMPS, P. CANNARSA, M. CAPELL, F. CARDANO, D. CASADEI, J. CASAUS, G. CASTELLINI, Y.H. CHANG, H.F. CHEN, H.S. CHEN, Z.G. CHEN, N.A. CHERNOPLEKOV, T.H. CHIUEH, K. CHO, M.J. CHOI, Y.Y. CHOI, F. CINDOLO, V. COMMICHAU, A. CONTIN, E. CORTINA-GIL, M. CRISTINZIANI, T.S. DAI, C. DELGADO, S. DIFALCO, L. DJAMBAZOV, I. D'ANTONE, Z.R. DONG, P. EMONET, J. ENGELBERG, F.J. EPPLING, T. ERONEN, G. ESPOSITO, P. EXTERMANN, J. FAVIER, E. FIANDRINI, P.H. FISHER, G. FLUEGGE, N. FOUQUE, YU. GALAKTIONOV, H. GAST, M. GERVASI, P. GIUSTI, D. GRANDI, O. GRIMM, W.Q. GU, K. HANGARTER, A. HASAN, V. HERMEL, H. HOFER, W. HUNGERFORD, M. JONGMANNS, K. KARLAMAA, W. KARPINSKI, G. KENNEY, D.H. KIM, G.N. KIM, K.S. KIM, M.Y. KIM, A. KLIMENTOV, R. KOSSAKOWSKI, A. KOUNINE, V. KOUTSENKO, M. KRAEBER, G. LABORIE, T. LAITINEN, G. LAMANNA, E. LANCIOTTI, G. LAURENTI, A. LEBEDEV, C. LECHANOINE-LELUC, M.W.LEE, S.C. LEE, G. LEVI, C.L. LIU, H.T. LIU, G. LU, Y.S. LU, K. LUBELSMEYER, D. LUCKEY, W. LUSTERMANN, C. MANA, A. MARGOTTI, F. MAYET, R.R. MCNEIL, B. MEILLON, M. MENICHELLI, A.MIHUL, A. MUJUNEN, A. OLIVA, J. OLZEM, F. PALMONARI, H.B. PARK, W.H. PARK, M. PAULUZZI, F. PAUSS, E. PERRIN, A. PESCI, A. PEVSNER, F. PILO, M. PIMENTA, V. PLYASKIN, V. POJIDAEV, M. POHL, N. PRODUIT, P.G. RANCOITA, D. RAPIN, F. RAUPACH, D. REN, Z. REN, M. RIBORDY, J.P. RICHEAUX, E. RIIHONEN, J. RITAKARI, S. RO, U. ROESER, C. ROSSIN, R. SAGDEEV, D. SANTOS, G. SARTORELLI, C. SBARRA, S. SCHAEL, A. SCHULTZ VON DRATZIG, G. SCHWERING, E.S. SEO, J.W. SHIN, E. SHOUMILOV, V. SHOUTKO, T. SIEDENBURG, R. SIEDLING, D. SON, T. SONG, F. SPINELLA, M. STEUER, G. S. SUN, H. SUTER, X.W. TANG, SAMUEL C.C. TING, S.M. TING, M. TORNIKOSKI, J. TORSTI, J. TRUEMPER, J. ULBRICHT, S. URPO, E. VALTONEN, J. VANDENHIRTZ, E. VELIKHOV, B. VERLAAT, I. VETLITSKI, F. VEZZU, J.P. VIALLE, G. VIERTEL, D. VITE, H. VON GUNTEN, S. WALDMEIER WICKI, W. WALLRAFF, B.C. WANG, J.Z. WANG, K. WIIK, C. WILLIAMS, S.X. WU, P.C. XIA, S. XU, J.L. YAN, L.G. YAN, C.G. YANG, J. YANG, M. YANG, S.W. YE, Z.Z. XU, H.Y. ZHANG, Z.P. ZHANG, D.X. ZHAO, Y. ZHOU, G.Y.ZHU, W.Z. ZHU, H.L. ZHUANG, A. ZICHICHI, B. ZIMMERMANN, P. ZUCCON, Aguilar, M, Alcaraz, J, Allaby, J, Alpat, B, Ambrosi, G, Anderhub, H, L., A, A., A, P., A, L., B, M., B, D., B, F., B, G., B, R., B, U., B, P., B, J., B, B., B, A., B, S., B, Boella, G, Boschini, M, J. D., B, W. J., B, X. D., C, C., C, P., C, M., C, F., C, D., C, J., C, G., C, Y. H., C, H. F., C, H. S., C, Z. G., C, N. A., C, T. H., C, K., C, M. J., C, Y. Y., C, V., C, A., C, E., C, T. S., D, C., D, S., D, L., D, I., D, Z. R., D, P., E, J., E, F. J., E, T., E, G., E, J., F, E., F, P. H., F, G., F, N., F, Galaktionov, Y, H., G, Gervasi, M, P., G, Grandi, D, O., G, W. Q., G, K., H, A., H, V., H, H., H, W., H, M., J, K., K, W., K, G., K, D. H., K, G. N., K, K. S., K, M. Y., K, A., K, R., K, V., K, Ac, M., K, G., L, T., L, E., L, A., L, C., L, M. W., L, S. C., L, C. L., L, H. T., L, Y. S., L, K., L, D., L, W., L, C., M, A., M, F., M, R. R., M, B., M, M., M, A., O, J., O, F., P, H. B., P, W. H., P, M., P, E., P, A., P, W, V., P, N., P, Rancoita, PG D., R, F., R, D., R, Z., R, M., R, J. P., R, E., R, J., R, S., R, U., R, C., R, R., S, D., S, G., S, C., S, S., S, A., S, E. S., S, J. W., S, E., S, V., S, T., S, F., S, M., S, G. S., S, H., S, X. W., T, Samuel C. C., T, S. M., T, M., T, J., T, J., U, S., U, E., V, J., V, B., V, I., V, F., V, J. P., V, G., V, D., V, H., V, S., W, W., W, B. C., W, J. Z., W, K., W, C., W, S. X., W, M, P. C., X, S., X, J. L., Y, L. G., Y, C. G., Y, J., Y, M., Y, S. W., Y, Z. Z., X, H. Y., Z, Z. P., Z, D. X., Z, Y., Z, G. Y., Z, W. Z., Z, H. L., Z, A., Z, B., Z, P., Z, and UCL - SST/IRMP - Institut de recherche en mathématique et physique
Subjects: Raggi cosmici, esperimento AMS, Nuclear and High Energy Physics, Astrophysics and Astronomy, Photon, Proton, Astrophysics::High Energy Astrophysical Phenomena, Cosmic ray, ddc:500.2, Astrophysics, 01 natural sciences, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Nuclear physics, FIS/05 - ASTRONOMIA E ASTROFISICA, Positron, 0103 physical sciences, 010306 general physics, Nuclear Experiment, Physics, Range (particle radiation), 010308 nuclear & particles physics, Bremsstrahlung, Order (ring theory), Cosmic Rays Positrons, AMS experiment, Physics::Accelerator Physics, FIS/04 - FISICA NUCLEARE E SUBNUCLEARE, Energy (signal processing)
Abstract: A measurement of the cosmic ray positron fraction e+ / (e+ + e-) in the energy range of 1-30 GeV is presented. The measurement is based on data taken by the AMS-01 experiment during its 10 day Space Shuttle flight in June 1998. A proton background suppression on the order of 106 is reached by identifying converted bremsstrahlung photons emitted from positrons., Physics Letters B, 646 (4), ISSN:0370-2693, ISSN:0031-9163, ISSN:1873-2445
Published: 2007
Full Text: View/download PDF

14. Measurement of the Sunyaev-Zel'dovich effect with the SRT

Author: GERVASI, MASSIMO, BOELLA, GIULIANO FILIPPO, SIRONI, GIORGIO, ZANNONI, MARIO, Tartari, A, Natale, V., Gervasi, M, Boella, G, Sironi, G, Tartari, A, Zannoni, M, and Natale, V
Subjects: SIS mixers, FIS/05 - ASTRONOMIA E ASTROFISICA, Radiometer, Sunyaev-Zeldovich effect, Cosmic microwave background
Abstract: The Sunyaev-Zel'dovich effect is a powerful probe useful to investigate both the properties of galaxy clusters and cosmological parameters. We are developing low-noise SIS mixer- based receivers for continuum observations at 90 GHz. By using these receivers at the SRT we can investigate galaxy clusters at high redshift, where the typical core \textit{radii} are comparable to the angular resolution of the telescope at 100 GHz. These sources are largely unexplored but their interest will be increasing in the near future due to X-ray observations from satellites.
Published: 2006

15. Coherent Systems for the detection of the CMB Polarization

Author: GERVASI, MASSIMO, ZANNONI, MARIO, BOELLA, GIULIANO FILIPPO, SIRONI, GIORGIO, Tartari, A, Fabbri, R, Gervasi, M, Zannoni, M, Tartari, A, Boella, G, and Sironi, G
Subjects: FIS/05 - ASTRONOMIA E ASTROFISICA, FIS/01 - FISICA SPERIMENTALE, Cosmic Microwave Background, Polarimetry
Abstract: Polarization of the Cosmic Microwave Background (CMB) is a very important tool of present day Observational Cosmology. Because the expected amplitude of the CMB polarization is very tiny (of the order of a part over 10^6 or even less), observations carried on using standard radiotelescopes are practically impossible. Ad hoc systems and methods of observations have to be studied and implemented. To confirm and extend the few positive detections so far obtained, it is essential to reach a very deep understanding of the instrumentation used for these studies and of all the sources of spurious effects which can obscure the true signal or, even worst, mimic nonexistent signals. In the following, we first look at what we can expect and has been so far detected. We then analyze the structures common to many sorts of polarimeters dedicated to CMB studies and concentrate our attention on coherent systems, which take advantage of the correlation methods to recognize the presence of a polarized signal in a much stronger sea of unpolarized radiation and polarized foregrounds. We then discuss various sorts of spurious effects and briefly compare coherent with (a) incoherent (bolometric) systems and (b) systems based on interferometric methods
Published: 2006

16. Galactic foregrounds and CMB polarization with SPOrt

Author: Tucci, M, Cortiglioni, S, Carretti, E, Orsini, M, Fabbri, R, Cecchini, S, Macculi, C, Monari, J, Orfei, A, Pisani, U, Poppi, S, Tascone, R, SIRONI, GIORGIO, BOELLA, GIULIANO FILIPPO, BONOMETTO, SILVIO, GERVASI, MASSIMO, ZANNONI, MARIO, Tucci, M, Cortiglioni, S, Carretti, E, Orsini, M, Fabbri, R, Cecchini, S, Sironi, G, Boella, G, Bonometto, S, Gervasi, M, Macculi, C, Monari, J, Orfei, A, Pisani, U, Poppi, S, Tascone, R, and Zannoni, M
Subjects: Cosmic Microwave Background, Galactic foregrounds
Published: 2005

17. A STUDY OF COSMIC RAY SECONDARIES INDUCED BY THE MIR SPACE STATION USING AMS-01

Author: Aguilar, M, Alcaraz, J, Allaby, J, Alpat, B, Ambrosi, G, Anderhub, H, L. Aof, A. Arefievg, P. Azzarellod, E. Babuccic, L. Baldinih, i, M. Basileh, D. Barancourtj, F. Baraok, l, G. Barbierj, G. Barreirak, R. Battistonc, R. Beckeri, U. Beckeri, L. Bellagambah, P. Bénéd, J. Berdugoa, P. Bergesi, B. Bertuccic, A. Bilande, S. Bizzagliac, S. Blaskoc, Boschini, M, M. Bourquind, L. Broccoh, G. Brunih, M. Buénerdj, J. D. Burgeri, W. J. Burgerc, X. D. Caii, C. Campsn, P. Cannarsae, M. Capelli, G. Carosii, D. Casadeih, J. Casausa, G. Castellinio, h, C. Cecchic, Y. H. Changp, H. F. Chenq, H. S. Chenr, Z. G. Chenf, N. A. Chernoplekovs, T. H. Chiuehp, K. Chot, M. J. Choiu, Y. Y. Choiu, Y. L. Chuangv, F. Cindoloh, V. Commichaun, A. Continh, E. Cortina Gild, M. Cristinzianid, J. P. da Cunhaw, T. S. Daii, C. Delgadoa, B. Demirközi, J. D. Deusl, N. Dinuc, 1, L. Djambazove, I. D’Antoneh, Z. R. Dongx, P. Emonetd, J. Engelbergy, F. J. Epplingi, T. Eronenz, G. Espositoc, P. Extermannd, J. Favieraa, E. Fiandrinic, P. H. Fisheri, G. Flueggen, N. Fouqueaa, Y.u. Galaktionovg, P. Giustih, Grandi, D, O. Grimme, W. Q. Gux, K. Hangartern, A. Hasane, R. Henning, V. Hermelaa, H. Hofere, M. A. Huangv, W. Hungerforde, M. Ionicac, R. Ionicac, M. Jongmannse, K. Karlamaay, W. Karpinskiab, G. Kenneye, J. Kennyc, D. H. Kimt, G. N. Kimt, K. S. Kimu, M. Y. Kimu, A. Klimentovi, g, R. Kossakowskiaa, V. Koutsenkoi, M. Kraebere, G. Laboriej, T. Laitinenz, G. Lamannac, E. Lanciottia, G. Laurentih, A. Lebedevi, C. Lechanoine Lelucd, M. W. Leet, S. C. Leev, G. Levih, P. Levtchenkoc, 3, C. L. Liuac, H. T. Liur, I. Lopesw, G. Luf, Y. S. Lur, K. Lübelsmeyerab, D. Luckeyi, W. Lustermanne, C. Mañaa, A. Margottih, F. Mayetj, R. R. McNeilad, B. Meillonj, M. Menichellic, A. Mihulae, B. Monreali, A. Mouraol, A. Mujuneny, F. Palmonarih, A. Papic, H. B. Parkt, W. H. Parkt, M. Pauluzzic, F. Pausse, E. Perrind, A. Pescih, A. Pevsneraf, M. Pimentak, V. Plyasking, V. Pojidaevg, M. Pohld, V. Postolachec, N. Produitd, Rancoita, PG, D. Rapind, F. Raupachab, D. Rene, Z. Renv, M. Ribordyd, J. P. Richeuxd, E. Riihonenz, J. Ritakariy, S. Rot, U. Roesere, C. Rossinj, R. Sagdeevag, D. Santosj, G. Sartorellih, C. Sbarrah, S. Schaelab, A. Schultz von Dratzigab, G. Schweringab, G. Scolieric, E. S. Seoag, J. W. Shint, E. Shoumilovg, V. Shoutkoi, R. Siedlingab, D. Sont, T. Songx, M. Steueri, G. S. Sunx, H. Sutere, X. W. Tangr, Samuel C. C. Tingi, S. M. Tingi, M. Tornikoskiy, J. Torstiz, J. Trümperah, J. Ulbrichte, S. Urpoy, E. Valtonenz, J. Vandenhirtzab, F. Velceac, E. Velikhovs, B. Verlaate, 4, I. Vetlitskyg, F. Vezzuj, J. P. Vialleaa, G. Viertele, D. Vitéd, H. Von Guntene, S. Waldmeier Wickie, W. Wallraffab, B. C. Wangac, J. Z. Wangf, Y. H. Wangv, K. Wiiky, C. Williamsh, S. X. Wui, p, P. C. Xiax, J. L. Yanf, L. G. Yanx, C. G. Yangr, J. Yangu, M. Yangr, S. W. Yeq, 5, P. Yehv, Z. Z. Xuq, H. Y. Zhangai, Z. P. Zhangq, D. X. Zhaox, G. Y. Zhur, W. Z. Zhuf, H. L. Zhuangr, A. Zichichih, B. Zimmermann, P. Zuccon, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, M. AGUILAR, J. ALCARAZ, J. ALLABY, B. ALPAT, G. AMBROSI, H. ANDERHUB, L. AO, A. AREFIEV, P. AZZARELLO, E. BABUCCI, L. BALDINI, M. BASILE, D. BARANCOURT, F. BARAO, G. BARBIER, G. BARREIRA, R. BATTISTON, R. BECKER, U. BECKER, L. BELLAGAMBA, P. BENE, J. BERDUGO, P. BERGES, B. BERTUCCI, A. BILAND, S. BIZZAGLIA, S. BLASKO, G. BOELLA, M. BOSCHINI, M. BOURQUIN, L. BROCCO, G. BRUNI, M. BUENERD, J.D. BURGER, W.J. BURGER, X.D. CAI, C. CAMPS, P. CANNARSA, M. CAPELL, G. CAROSI, D. CASADEI, J. CASAUS, G. CASTELLINI, C. CECCHI, Y.H. CHANG, H.F. CHEN, H.S. CHEN, Z.G. CHEN, N.A. CHERNOPLEKOV, T.H. CHIUEH, K. CHO, M.J. CHOI, Y.Y. CHOI, Y.L. CHUANG, F. CINDOLO, V. COMMICHAU, A. CONTIN, E. CORTINA-GIL, M. CRISTINZIANI, J.P. DA CUNHA, T.S. DAI, C. DELGADO, B. DEMIRKOEZ, J.D. DEUS, N. DINU, L. DJAMBAZOV, I. D'ANTONE, Z.R. DONG, P. EMONET, J. ENGELBERG, F.J. EPPLING, T. ERONEN, G. ESPOSITO, P. EXTERMANN, J. FAVIER, E. FIANDRINI, P.H. FISHER, G. FLUEGGE, N. FOUQUE, YU. GALAKTIONOV, M. GERVASI, P. GIUSTI, D. GRANDI, O. GRIMM, W.Q. GU, K. HANGARTER, H. HASAN, R. HENNING, V. HERMEL, H. HOFER, M.A. HUANG, W. HUNGERFORD, M. IONICA, R. IONICA, M. JONGMANNS, K. KARLAMAA, W. KARPINSKI, G. KENNEY, J. KENNY, D.H. KIM, G.N. KIM, K.S. KIM, M.Y. KIM, A. KLIMENTOV, R. KOSSAKOWSKI, V. KOUTSENKO, M. KRAEBER, G. LABORIE, T. LAITINEN, G. LAMANNA, E. LANCIOTTI, G. LAURENTI, A. LEBEDEV, C. LECHANOINE-LELUC, M.W.LEE, S.C. LEE, G. LEVI, P. LEVTCHENKO, C.L. LIU, H.T. LIU, I. LOPES, G. LU, Y.S. LU, K. LUBELSMEYER, D. LUCKEY, W. LUSTERMANN, C. MANA, A. MARGOTTI, F. MAYET, R.R. MCNEIL, B. MEILLON, M. MENICHELLI, A. MIHUL, B. MONREAL, A. MOURAO, A. MUJUNEN, F. PALMONARI, A. PAPI, H.B. PARK, W.H. PARK, M. PAULUZZI, F. PAUSS, E. PERRIN, A. PESCI, A. PEVSNER, M. PIMENTA, V. PLYASKIN, V. POJIDAEV, M. POHL, V. POSTOLACHE, N. PRODUIT, P.G. RANCOITA, D. RAPIN, F. RAUPACH, D. REN, Z. REN, M. RIBORDY, J.P. RICHEAUX, E. RIIHONEN, J. RITAKARI, S. RO, U. ROESER, C. ROSSIN, R. SAGDEEV, D. SANTOS, G. SARTORELLI, C. SBARRA, S. SCHAEL, A. SCHULTZ VON DRATZIG, G. SCHWERING, G. SCOLIERI, E.S. SEO, J.W. SHIN, E. SHOUMILOV, V. SHOUTKO, R. SIEDLING, D. SON, T. SONG, M. STEUER, G. S. SUN, H. SUTER, X.W. TANG, SAMUEL C.C. TING, S.M. TING, M. TORNIKOSKI, J. TORSTI, J. TRUEMPER, J. ULBRICHT, S. URPO, E. VALTONEN, J. VANDENHIRTZ, F. VELCEA, E. VELIKHOV, B. VERLAAT, I. VETLITSKI, F. VEZZU, J.P. VIALLE, G. VIERTEL, D. VITE, H. VON GUNTEN, S. WALDMEIER WICKI, W. WALLRAFF, B.C. WANG, J.Z. WANG, Y.H. WANG, K. WIIK, C. WILLIAMS, S.X. WU, P.C. XIA, J.L. YAN, L.G. YAN, C.G. YANG, J. YANG, M. YANG, S.W. YE, P. YEH, Z.Z. XU, H.Y. ZHANG, Z.P. ZHANG, D.X. ZHAO, G.Y. ZHU, W.Z. ZHU, H.L. ZHUANG, A. ZICHICHI, B. ZIMMERMANN, P. ZUCCON, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), AMS, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, CIEMAT, E-28040 Madrid, Spain6, UCL - SST/IRMP - Institut de recherche en mathématique et physique, Ambrosi, Giovanni, Azzarello, Philipp, Bene, Pierre, Bourquin, Maurice, Cortina Gil, Eduardo, Cristinziani, Markus, Emonet, Pascal Philippe, Leluc, Catherine, Perrin, Eric, Pohl, Martin, Produit, Nicolas, Rapin, Divic Jean, Ribordy, Mathieu, Richeux, Jean-Pierre, Vite, Davide, Aguilar, M, Alcaraz, J, Allaby, J, Alpat, B, Ambrosi, G, Anderhub, H, L., A, A., A, P., A, E., B, L., B, I, M., B, D., B, F., B, L, G., B, R., B, U., B, P., B, J., B, B., B, A., B, S., B, Boella, G, Boschini, M, J. D., B, W. J., B, X. D., C, C., C, P., C, M., C, G., C, D., C, J., C, H, Y. H., C, H. F., C, H. S., C, Z. G., C, N. A., C, T. H., C, K., C, M. J., C, Y. Y., C, Y. L., C, F., C, V., C, A., C, E., C, J. P., D, T. S., D, C., D, B., D, J. D., D, N., D, L., D, I., D, Z. R., D, P., E, J., E, F. J., E, T., E, G., E, J., F, E., F, P. H., F, G., F, N., F, Galaktionovg, Y, Gervasi, M, P., G, Grandi, D, O., G, W. Q., G, K., H, A., H, R., H, V., H, H., H, M. A., H, W., H, M., I, R., I, M., J, K., K, W., K, G., K, J., K, D. H., K, G. N., K, K. S., K, M. Y., K, A., K, G, R., K, V., K, M., K, G., L, T., L, E., L, A., L, C., L, M. W., L, S. C., L, P., L, C. L., L, H. T., L, I., L, Y. S., L, K., L, D., L, W., L, C., M, A., M, F., M, R. R., M, B., M, M., M, F., P, A., P, H. B., P, W. H., P, M., P, E., P, V., P, N., P, Rancoita, P, D., R, F., R, Z., R, M., R, J. P., R, E., R, J., R, S., R, U., R, C., R, R., S, D., S, G., S, C., S, S., S, A., S, E. S., S, J. W., S, E., S, V., S, T., S, M., S, G. S., S, H., S, X. W., T, Samuel C. C., T, S. M., T, M., T, J., T, J., U, S., U, E., V, J., V, F., V, B., V, I., V, J. P., V, G., V, D., V, H., V, S., W, W., W, B. C., W, J. Z., W, Y. H., W, K., W, C., W, S. X., W, P, P. C., X, J. L., Y, L. G., Y, C. G., Y, J., Y, M., Y, S. W., Y, P., Y, Z. Z., X, H. Y., Z, Z. P., Z, D. X., Z, G. Y., Z, W. Z., Z, H. L., Z, A., Z, B., Z, and P., Z
Subjects: Nuclear and High Energy Physics, FIS/06 - FISICA PER IL SISTEMA TERRA E PER IL MEZZO CIRCUMTERRESTRE, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, satellite, interaction, Space Shuttle, Cosmic ray, Field of view, Astrophysics, ddc:500.2, 01 natural sciences, pi, High Energy Physics - Experiment, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], FIS/05 - ASTRONOMIA E ASTROFISICA, cosmic rays, primary, 0103 physical sciences, International Space Station, Alpha Magnetic Spectrometer, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], AMS, 010303 astronomy & astrophysics, Instrumentation, Cosmic rays, Physics, 010308 nuclear & particles physics, space shuttle, Space shuttle, Astronomy, Mir, magnetic spectrometer, Cosmic rays, Spallation, AMS, Mir, Space shuttle, spallation, flux, Energy particle, 13.85.Tp, 25.40.Sc, 29.30.Aj, 95.55.Vj, 95.85.Ry, cosmic radiation, muon, ams, 13. Climate action, Muon flux, Spallation, FIS/04 - FISICA NUCLEARE E SUBNUCLEARE, Particle Physics - Experiment
Abstract: The Alpha Magnetic Spectrometer (AMS-02) is a high energy particle physics experiment that will study cosmic rays in the $\sim 100 \mathrm{MeV}$ to $1 \mathrm{TeV}$ range and will be installed on the International Space Station (ISS) for at least 3 years. A first version of AMS-02, AMS-01, flew aboard the space shuttle \emph{Discovery} from June 2 to June 12, 1998, and collected $10^8$ cosmic ray triggers. Part of the \emph{Mir} space station was within the AMS-01 field of view during the four day \emph{Mir} docking phase of this flight. We have reconstructed an image of this part of the \emph{Mir} space station using secondary $\pi^-$ and $\mu^-$ emissions from primary cosmic rays interacting with \emph{Mir}. This is the first time this reconstruction was performed in AMS-01, and it is important for understanding potential backgrounds during the 3 year AMS-02 mission., Comment: To be submitted to NIM B Added material requested by referee. Minor stylistic and grammer changes
Published: 2004
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18. Precision Measurement of the (e^+ + e^-) Flux in Primary Cosmic Rays from 0.5 GeV to 1 TeV with the Alpha Magnetic Spectrometer on the International Space Station

Author: Aguilar, M, Aisa, D, Alpat, B, Alvino, A, Ambrosi, G, Andeen, K, Arruda, L, Attig, N, Azzarello, P, Bachlechner, A, Barao, F, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Battarbee, M, Battiston, R, Bazo, J, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Bertucci, B, Bigongiari, G, Bindi, V, Bizzaglia, S, Bizzarri, M, Boella, G, de Boer, W, Bollweg, K, Bonnivard, V, Borgia, B, Borsini, S, Boschini, M, Bourquin, M, Burger, J, Cadoux, F, Cai, X, Capell, M, Caroff, S, Casaus, J, Cascioli, V, Castellini, G, Cernuda, I, Cervelli, F, Chae, M, Chang, Y, Chen, A, Chen, H, Cheng, G, Cheng, L, Chikanian, A, Chou, H, Choumilov, E, Choutko, V, Chung, C, Clark, C, Clavero, R, Coignet, G, Consolandi, C, Contin, A, Corti, C, Coste, B, Crispoltoni, M, Cui, Z, Dai, M, Delgado, C, Della Torre, S, Demirköz, M, Derome, L, Di Falco, S, Di Masso, L, Dimiccoli, F, Díaz, C, von Doetinchem, P, Donnini, F, Du, W, Duranti, M, D’Urso, D, Eline, A, Eppling, F, Eronen, T, Fan, Y, Farnesini, L, Feng, J, Fiandrini, E, Fiasson, A, Finch, E, Fisher, P, Galaktionov, Y, Gallucci, G, García, B, García López, R, Gargiulo, C, Gast, H, Gebauer, I, Gervasi, M, Ghelfi, A, Gillard, W, Giovacchini, F, Goglov, P, Gong, J, Goy, C, Grabski, V, Grandi, D, Graziani, M, Guandalini, C, Guerri, I, Guo, K, Habiby, M, Haino, S, Han, K, He, Z, Heil, M, Hoffman, J, Hsieh, T, Huang, Z, Huh, C, Incagli, M, Ionica, M, Jang, W, Jinchi, H, Kanishev, K, Kim, G, Kim, K, Kirn, T, Kossakowski, R, Kounina, O, Kounine, A, Koutsenko, V, Krafczyk, M, Kunz, S, LA VACCA, G, Laudi, E, Laurenti, G, Lazzizzera, I, Lebedev, A, Lee, H, Lee, S, Leluc, C, Li, H, Li, J, Li, Q, Li, T, Li, W, Li, Y, Li, Z, Lim, S, Lin, C, Lipari, P, Lippert, T, Liu, D, Liu, H, Lomtadze, T, Lu, M, Lu, Y, Luebelsmeyer, K, Luo, F, Luo, J, Lv, S, Majka, R, Malinin, A, Mañá, C, Marín, J, Martin, T, Martínez, G, Masi, N, Maurin, D, Menchaca Rocha, A, Meng, Q, Mo, D, Morescalchi, L, Mott, P, Müller, M, Ni, J, Nikonov, N, Nozzoli, F, Nunes, P, Obermeier, A, Oliva, A, Orcinha, M, Palmonari, F, Palomares, C, Paniccia, M, Papi, A, Pauluzzi, M, Pedreschi, E, Pensotti, S, Pereira, R, Pilo, F, Piluso, A, Pizzolotto, C, Plyaskin, V, Pohl, M, Poireau, V, Postaci, E, Putze, A, Quadrani, L, Qi, X, Räihä, T, Rancoita, P, Rapin, D, Ricol, J, Rodríguez, I, Rosier Lees, S, Rozhkov, A, Rozza, D, Sagdeev, R, Sandweiss, J, Saouter, P, Sbarra, C, Schael, S, Schmidt, S, Schuckardt, D, Schulz von Dratzig, A, Schwering, G, Scolieri, G, Seo, E, Shan, B, Shan, Y, Shi, J, Shi, X, Shi, Y, Siedenburg, T, Son, D, Spada, F, Spinella, F, Sun, W, Tacconi, M, Tang, C, Tang, X, Tang, Z, Tao, L, Tescaro, D, Ting, S, Tomassetti, N, Torsti, J, Türkoğlu, C, Urban, T, Vagelli, V, Valente, E, Vannini, C, Valtonen, E, Vaurynovich, S, Vecchi, M, Velasco, M, Vialle, J, Wang, L, Wang, Q, Wang, R, Wang, X, Wang, Z, Weng, Z, Whitman, K, Wienkenhöver, J, Wu, H, Xia, X, Xie, M, Xie, S, Xiong, R, Xin, G, Xu, N, Xu, W, Yan, Q, Yang, J, Yang, M, Ye, Q, Yi, H, Yu, Y, Yu, Z, Zeissler, S, Zhang, J, Zhang, M, Zhang, X, Zhang, Z, Zheng, Z, Zhuang, H, Zhukov, V, Zichichi, A, Zimmermann, N, Zuccon, P, Zurbach, C, ROZZA, DAVIDE, Zurbach, C., BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, LA VACCA, GIUSEPPE, PENSOTTI, SIMONETTA, TACCONI, MAURO, Aguilar, M, Aisa, D, Alpat, B, Alvino, A, Ambrosi, G, Andeen, K, Arruda, L, Attig, N, Azzarello, P, Bachlechner, A, Barao, F, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Battarbee, M, Battiston, R, Bazo, J, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Bertucci, B, Bigongiari, G, Bindi, V, Bizzaglia, S, Bizzarri, M, Boella, G, de Boer, W, Bollweg, K, Bonnivard, V, Borgia, B, Borsini, S, Boschini, M, Bourquin, M, Burger, J, Cadoux, F, Cai, X, Capell, M, Caroff, S, Casaus, J, Cascioli, V, Castellini, G, Cernuda, I, Cervelli, F, Chae, M, Chang, Y, Chen, A, Chen, H, Cheng, G, Cheng, L, Chikanian, A, Chou, H, Choumilov, E, Choutko, V, Chung, C, Clark, C, Clavero, R, Coignet, G, Consolandi, C, Contin, A, Corti, C, Coste, B, Crispoltoni, M, Cui, Z, Dai, M, Delgado, C, Della Torre, S, Demirköz, M, Derome, L, Di Falco, S, Di Masso, L, Dimiccoli, F, Díaz, C, von Doetinchem, P, Donnini, F, Du, W, Duranti, M, D’Urso, D, Eline, A, Eppling, F, Eronen, T, Fan, Y, Farnesini, L, Feng, J, Fiandrini, E, Fiasson, A, Finch, E, Fisher, P, Galaktionov, Y, Gallucci, G, García, B, García López, R, Gargiulo, C, Gast, H, Gebauer, I, Gervasi, M, Ghelfi, A, Gillard, W, Giovacchini, F, Goglov, P, Gong, J, Goy, C, Grabski, V, Grandi, D, Graziani, M, Guandalini, C, Guerri, I, Guo, K, Habiby, M, Haino, S, Han, K, He, Z, Heil, M, Hoffman, J, Hsieh, T, Huang, Z, Huh, C, Incagli, M, Ionica, M, Jang, W, Jinchi, H, Kanishev, K, Kim, G, Kim, K, Kirn, T, Kossakowski, R, Kounina, O, Kounine, A, Koutsenko, V, Krafczyk, M, Kunz, S, LA VACCA, G, Laudi, E, Laurenti, G, Lazzizzera, I, Lebedev, A, Lee, H, Lee, S, Leluc, C, Li, H, Li, J, Li, Q, Li, T, Li, W, Li, Y, Li, Z, Lim, S, Lin, C, Lipari, P, Lippert, T, Liu, D, Liu, H, Lomtadze, T, Lu, M, Lu, Y, Luebelsmeyer, K, Luo, F, Luo, J, Lv, S, Majka, R, Malinin, A, Mañá, C, Marín, J, Martin, T, Martínez, G, Masi, N, Maurin, D, Menchaca Rocha, A, Meng, Q, Mo, D, Morescalchi, L, Mott, P, Müller, M, Ni, J, Nikonov, N, Nozzoli, F, Nunes, P, Obermeier, A, Oliva, A, Orcinha, M, Palmonari, F, Palomares, C, Paniccia, M, Papi, A, Pauluzzi, M, Pedreschi, E, Pensotti, S, Pereira, R, Pilo, F, Piluso, A, Pizzolotto, C, Plyaskin, V, Pohl, M, Poireau, V, Postaci, E, Putze, A, Quadrani, L, Qi, X, Räihä, T, Rancoita, P, Rapin, D, Ricol, J, Rodríguez, I, Rosier Lees, S, Rozhkov, A, Rozza, D, Sagdeev, R, Sandweiss, J, Saouter, P, Sbarra, C, Schael, S, Schmidt, S, Schuckardt, D, Schulz von Dratzig, A, Schwering, G, Scolieri, G, Seo, E, Shan, B, Shan, Y, Shi, J, Shi, X, Shi, Y, Siedenburg, T, Son, D, Spada, F, Spinella, F, Sun, W, Tacconi, M, Tang, C, Tang, X, Tang, Z, Tao, L, Tescaro, D, Ting, S, Tomassetti, N, Torsti, J, Türkoğlu, C, Urban, T, Vagelli, V, Valente, E, Vannini, C, Valtonen, E, Vaurynovich, S, Vecchi, M, Velasco, M, Vialle, J, Wang, L, Wang, Q, Wang, R, Wang, X, Wang, Z, Weng, Z, Whitman, K, Wienkenhöver, J, Wu, H, Xia, X, Xie, M, Xie, S, Xiong, R, Xin, G, Xu, N, Xu, W, Yan, Q, Yang, J, Yang, M, Ye, Q, Yi, H, Yu, Y, Yu, Z, Zeissler, S, Zhang, J, Zhang, M, Zhang, X, Zhang, Z, Zheng, Z, Zhuang, H, Zhukov, V, Zichichi, A, Zimmermann, N, Zuccon, P, Zurbach, C, ROZZA, DAVIDE, Zurbach, C., BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, LA VACCA, GIUSEPPE, PENSOTTI, SIMONETTA, and TACCONI, MAURO
Published: 2014

19. High Statistics Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5–500 GeV with the Alpha Magnetic Spectrometer on the International Space Station

Author: Accardo, L, Aguilar, M, Aisa, D, Alpat, B, Alvino, A, Ambrosi, G, Andeen, K, Arruda, L, Attig, N, Azzarello, P, Bachlechner, A, Barao, F, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Battarbee, M, Battiston, R, Bazo, J, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Bertucci, B, Bigongiari, G, Bindi, V, Bizzaglia, S, Bizzarri, M, Boella, G, de Boer, W, Bollweg, K, Bonnivard, V, Borgia, B, Borsini, S, Boschini, M, Bourquin, M, Burger, J, Cadoux, F, Cai, X, Capell, M, Caroff, S, Carosi, G, Casaus, J, Cascioli, V, Castellini, G, Cernuda, I, Cerreta, D, Cervelli, F, Chae, M, Chang, Y, Chen, A, Chen, H, Cheng, G, Cheng, L, Chikanian, A, Chou, H, Choumilov, E, Choutko, V, Chung, C, Cindolo, F, Clark, C, Clavero, R, Coignet, G, Consolandi, C, Contin, A, Corti, C, Coste, B, Cui, Z, Dai, M, Delgado, C, Della Torre, S, Demirköz, M, Derome, L, Di Falco, S, Di Masso, L, Dimiccoli, F, Díaz, C, von Doetinchem, P, Du, W, Duranti, M, D’Urso, D, Eline, A, Eppling, F, Eronen, T, Fan, Y, Farnesini, L, Feng, J, Fiandrini, E, Fiasson, A, Finch, E, Fisher, P, Galaktionov, Y, Gallucci, G, García, B, García López, R, Gast, H, Gebauer, I, Gervasi, M, Ghelfi, A, Gillard, W, Giovacchini, F, Goglov, P, Gong, J, Goy, C, Grabski, V, Grandi, D, Graziani, M, Guandalini, C, Guerri, I, Guo, K, Haas, D, Habiby, M, Haino, S, Han, K, He, Z, Heil, M, Henning, R, Hoffman, J, Hsieh, T, Huang, Z, Huh, C, Incagli, M, Ionica, M, Jang, W, Jinchi, H, Kanishev, K, Kim, G, Kim, K, Kirn, T, Kossakowski, R, Kounina, O, Kounine, A, Koutsenko, V, Krafczyk, M, Kunz, S, LA VACCA, G, Laudi, E, Laurenti, G, Lazzizzera, I, Lebedev, A, Lee, H, Lee, S, Leluc, C, Levi, G, Li, H, Li, J, Li, Q, Li, T, Li, W, Li, Y, Li, Z, Lim, S, Lin, C, Lipari, P, Lippert, T, Liu, D, Liu, H, Lolli, M, Lomtadze, T, Lu, M, Lu, Y, Luebelsmeyer, K, Luo, F, Luo, J, Lv, S, Majka, R, Malinin, A, Mañá, C, Marín, J, Martin, T, Martínez, G, Masi, N, Massera, F, Maurin, D, Menchaca Rocha, A, Meng, Q, Mo, D, Monreal, B, Morescalchi, L, Mott, P, Müller, M, Ni, J, Nikonov, N, Nozzoli, F, Nunes, P, Obermeier, A, Oliva, A, Orcinha, M, Palmonari, F, Palomares, C, Paniccia, M, Papi, A, Pauluzzi, M, Pedreschi, E, Pensotti, S, Pereira, R, Pilastrini, R, Pilo, F, Piluso, A, Pizzolotto, C, Plyaskin, V, Pohl, M, Poireau, V, Postaci, E, Putze, A, Quadrani, L, Qi, X, Rancoita, P, Rapin, D, Ricol, J, Rodríguez, I, Rosier Lees, S, Rossi, L, Rozhkov, A, Rozza, D, Rybka, G, Sagdeev, R, Sandweiss, J, Saouter, P, Sbarra, C, Schael, S, Schmidt, S, Schuckardt, D, Schulz von Dratzig, A, Schwering, G, Scolieri, G, Seo, E, Shan, B, Shan, Y, Shi, J, Shi, X, Shi, Y, Siedenburg, T, Son, D, Spada, F, Spinella, F, Sun, W, Tacconi, M, Tang, C, Tang, X, Tang, Z, Tao, L, Tescaro, D, Ting, S, Tomassetti, N, Torsti, J, Türkoğlu, C, Urban, T, Vagelli, V, Valente, E, Vannini, C, Valtonen, E, Vaurynovich, S, Vecchi, M, Velasco, M, Vialle, J, Vitale, V, Volpini, G, Wang, L, Wang, Q, Wang, R, Wang, X, Wang, Z, Weng, Z, Whitman, K, Wienkenhöver, J, Wu, H, Wu, K, Xia, X, Xie, M, Xie, S, Xiong, R, Xin, G, Xu, N, Xu, W, Yan, Q, Yang, J, Yang, M, Ye, Q, Yi, H, Yu, Y, Yu, Z, Zeissler, S, Zhang, J, Zhang, M, Zhang, X, Zhang, Z, Zheng, Z, Zhou, F, Zhuang, H, Zhukov, V, Zichichi, A, Zimmermann, N, Zuccon, P, Zurbach, C, LA VACCA, GIUSEPPE, ROZZA, DAVIDE, Zurbach, C., BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, TACCONI, MAURO, Accardo, L, Aguilar, M, Aisa, D, Alpat, B, Alvino, A, Ambrosi, G, Andeen, K, Arruda, L, Attig, N, Azzarello, P, Bachlechner, A, Barao, F, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Battarbee, M, Battiston, R, Bazo, J, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Bertucci, B, Bigongiari, G, Bindi, V, Bizzaglia, S, Bizzarri, M, Boella, G, de Boer, W, Bollweg, K, Bonnivard, V, Borgia, B, Borsini, S, Boschini, M, Bourquin, M, Burger, J, Cadoux, F, Cai, X, Capell, M, Caroff, S, Carosi, G, Casaus, J, Cascioli, V, Castellini, G, Cernuda, I, Cerreta, D, Cervelli, F, Chae, M, Chang, Y, Chen, A, Chen, H, Cheng, G, Cheng, L, Chikanian, A, Chou, H, Choumilov, E, Choutko, V, Chung, C, Cindolo, F, Clark, C, Clavero, R, Coignet, G, Consolandi, C, Contin, A, Corti, C, Coste, B, Cui, Z, Dai, M, Delgado, C, Della Torre, S, Demirköz, M, Derome, L, Di Falco, S, Di Masso, L, Dimiccoli, F, Díaz, C, von Doetinchem, P, Du, W, Duranti, M, D’Urso, D, Eline, A, Eppling, F, Eronen, T, Fan, Y, Farnesini, L, Feng, J, Fiandrini, E, Fiasson, A, Finch, E, Fisher, P, Galaktionov, Y, Gallucci, G, García, B, García López, R, Gast, H, Gebauer, I, Gervasi, M, Ghelfi, A, Gillard, W, Giovacchini, F, Goglov, P, Gong, J, Goy, C, Grabski, V, Grandi, D, Graziani, M, Guandalini, C, Guerri, I, Guo, K, Haas, D, Habiby, M, Haino, S, Han, K, He, Z, Heil, M, Henning, R, Hoffman, J, Hsieh, T, Huang, Z, Huh, C, Incagli, M, Ionica, M, Jang, W, Jinchi, H, Kanishev, K, Kim, G, Kim, K, Kirn, T, Kossakowski, R, Kounina, O, Kounine, A, Koutsenko, V, Krafczyk, M, Kunz, S, LA VACCA, G, Laudi, E, Laurenti, G, Lazzizzera, I, Lebedev, A, Lee, H, Lee, S, Leluc, C, Levi, G, Li, H, Li, J, Li, Q, Li, T, Li, W, Li, Y, Li, Z, Lim, S, Lin, C, Lipari, P, Lippert, T, Liu, D, Liu, H, Lolli, M, Lomtadze, T, Lu, M, Lu, Y, Luebelsmeyer, K, Luo, F, Luo, J, Lv, S, Majka, R, Malinin, A, Mañá, C, Marín, J, Martin, T, Martínez, G, Masi, N, Massera, F, Maurin, D, Menchaca Rocha, A, Meng, Q, Mo, D, Monreal, B, Morescalchi, L, Mott, P, Müller, M, Ni, J, Nikonov, N, Nozzoli, F, Nunes, P, Obermeier, A, Oliva, A, Orcinha, M, Palmonari, F, Palomares, C, Paniccia, M, Papi, A, Pauluzzi, M, Pedreschi, E, Pensotti, S, Pereira, R, Pilastrini, R, Pilo, F, Piluso, A, Pizzolotto, C, Plyaskin, V, Pohl, M, Poireau, V, Postaci, E, Putze, A, Quadrani, L, Qi, X, Rancoita, P, Rapin, D, Ricol, J, Rodríguez, I, Rosier Lees, S, Rossi, L, Rozhkov, A, Rozza, D, Rybka, G, Sagdeev, R, Sandweiss, J, Saouter, P, Sbarra, C, Schael, S, Schmidt, S, Schuckardt, D, Schulz von Dratzig, A, Schwering, G, Scolieri, G, Seo, E, Shan, B, Shan, Y, Shi, J, Shi, X, Shi, Y, Siedenburg, T, Son, D, Spada, F, Spinella, F, Sun, W, Tacconi, M, Tang, C, Tang, X, Tang, Z, Tao, L, Tescaro, D, Ting, S, Tomassetti, N, Torsti, J, Türkoğlu, C, Urban, T, Vagelli, V, Valente, E, Vannini, C, Valtonen, E, Vaurynovich, S, Vecchi, M, Velasco, M, Vialle, J, Vitale, V, Volpini, G, Wang, L, Wang, Q, Wang, R, Wang, X, Wang, Z, Weng, Z, Whitman, K, Wienkenhöver, J, Wu, H, Wu, K, Xia, X, Xie, M, Xie, S, Xiong, R, Xin, G, Xu, N, Xu, W, Yan, Q, Yang, J, Yang, M, Ye, Q, Yi, H, Yu, Y, Yu, Z, Zeissler, S, Zhang, J, Zhang, M, Zhang, X, Zhang, Z, Zheng, Z, Zhou, F, Zhuang, H, Zhukov, V, Zichichi, A, Zimmermann, N, Zuccon, P, Zurbach, C, LA VACCA, GIUSEPPE, ROZZA, DAVIDE, Zurbach, C., BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, and TACCONI, MAURO
Abstract: A precision measurement by AMS of the positron fraction in primary cosmic rays in the energy range from 0.5 to 500 GeV based on 10.9 million positron and electron events is presented. This measurement extends the energy range of our previous observation and increases its precision. The new results show, for the first time, that above ∼200GeV the positron fraction no longer exhibits an increase with energy.
Published: 2014

20. Electron and Positron Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station

Author: Aguilar, M, Aisa, D, Alvino, A, Ambrosi, G, Andeen, K, Arruda, L, Attig, N, Azzarello, P, Bachlechner, A, Barao, F, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Battarbee, M, Battiston, R, Bazo, J, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Bertucci, B, Bigongiari, G, Bindi, V, Bizzaglia, S, Bizzarri, M, Boella, G, de Boer, W, Bollweg, K, Bonnivard, V, Borgia, B, Borsini, S, Boschini, M, Bourquin, M, Burger, J, Cadoux, F, Cai, X, Capell, M, Caroff, S, Casaus, J, Cascioli, V, Castellini, G, Cernuda, I, Cervelli, F, Chae, M, Chang, Y, Chen, A, Chen, H, Cheng, G, Cheng, L, Chikanian, A, Chou, H, Choumilov, E, Choutko, V, Chung, C, Clark, C, Clavero, R, Coignet, G, Consolandi, C, Contin, A, Corti, C, Coste, B, Cui, Z, Dai, M, Delgado, C, Della Torre, S, Demirköz, M, Derome, L, Di Falco, S, Di Masso, L, Dimiccoli, F, Díaz, C, von Doetinchem, P, Du, W, Duranti, M, D’Urso, D, Eline, A, Eppling, F, Eronen, T, Fan, Y, Farnesini, L, Feng, J, Fiandrini, E, Fiasson, A, Finch, E, Fisher, P, Galaktionov, Y, Gallucci, G, García, B, García López, R, Gast, H, Gebauer, I, Gervasi, M, Ghelfi, A, Gillard, W, Giovacchini, F, Goglov, P, Gong, J, Goy, C, Grabski, V, Grandi, D, Graziani, M, Guandalini, C, Guerri, I, Guo, K, Habiby, M, Haino, S, Han, K, He, Z, Heil, M, Hoffman, J, Hsieh, T, Huang, Z, Huh, C, Incagli, M, Ionica, M, Jang, W, Jinchi, H, Kanishev, K, Kim, G, Kim, K, Kirn, T, Kossakowski, R, Kounina, O, Kounine, A, Koutsenko, V, Krafczyk, M, Kunz, S, LA VACCA, G, Laudi, E, Laurenti, G, Lazzizzera, I, Lebedev, A, Lee, H, Lee, S, Leluc, C, Li, H, Li, J, Li, Q, Li, T, Li, W, Li, Y, Li, Z, Lim, S, Lin, C, Lipari, P, Lippert, T, Liu, D, Liu, H, Lomtadze, T, Lu, M, Lu, Y, Luebelsmeyer, K, Luo, F, Luo, J, Lv, S, Majka, R, Malinin, A, Mañá, C, Marín, J, Martin, T, Martínez, G, Masi, N, Maurin, D, Menchaca Rocha, A, Meng, Q, Mo, D, Morescalchi, L, Mott, P, Müller, M, Ni, J, Nikonov, N, Nozzoli, F, Nunes, P, Obermeier, A, Oliva, A, Orcinha, M, Palmonari, F, Palomares, C, Paniccia, M, Papi, A, Pedreschi, E, Pensotti, S, Pereira, R, Pilo, F, Piluso, A, Pizzolotto, C, Plyaskin, V, Pohl, M, Poireau, V, Postaci, E, Putze, A, Quadrani, L, Qi, X, Rancoita, P, Rapin, D, Ricol, J, Rodríguez, I, Rosier Lees, S, Rozhkov, A, Rozza, D, Sagdeev, R, Sandweiss, J, Saouter, P, Sbarra, C, Schael, S, Schmidt, S, Schuckardt, D, von Dratzig, A, Schwering, G, Scolieri, G, Seo, E, Shan, B, Shan, Y, Shi, J, Shi, X, Shi, Y, Siedenburg, T, Son, D, Spada, F, Spinella, F, Sun, W, Tacconi, M, Tang, C, Tang, X, Tang, Z, Tao, L, Tescaro, D, Ting, S, Tomassetti, N, Torsti, J, Türkoğlu, C, Urban, T, Vagelli, V, Valente, E, Vannini, C, Valtonen, E, Vaurynovich, S, Vecchi, M, Velasco, M, Vialle, J, Wang, L, Wang, Q, Wang, R, Wang, X, Wang, Z, Weng, Z, Whitman, K, Wienkenhöver, J, Wu, H, Xia, X, Xie, M, Xie, S, Xiong, R, Xin, G, Xu, N, Xu, W, Yan, Q, Yang, J, Yang, M, Ye, Q, Yi, H, Yu, Y, Yu, Z, Zeissler, S, Zhang, J, Zhang, M, Zhang, X, Zhang, Z, Zheng, Z, Zhuang, H, Zhukov, V, Zichichi, A, Zimmermann, N, Zuccon, P, Zurbach, C, LA VACCA, GIUSEPPE, ROZZA, DAVIDE, Zurbach, C., BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, TACCONI, MAURO, Aguilar, M, Aisa, D, Alvino, A, Ambrosi, G, Andeen, K, Arruda, L, Attig, N, Azzarello, P, Bachlechner, A, Barao, F, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Battarbee, M, Battiston, R, Bazo, J, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Bertucci, B, Bigongiari, G, Bindi, V, Bizzaglia, S, Bizzarri, M, Boella, G, de Boer, W, Bollweg, K, Bonnivard, V, Borgia, B, Borsini, S, Boschini, M, Bourquin, M, Burger, J, Cadoux, F, Cai, X, Capell, M, Caroff, S, Casaus, J, Cascioli, V, Castellini, G, Cernuda, I, Cervelli, F, Chae, M, Chang, Y, Chen, A, Chen, H, Cheng, G, Cheng, L, Chikanian, A, Chou, H, Choumilov, E, Choutko, V, Chung, C, Clark, C, Clavero, R, Coignet, G, Consolandi, C, Contin, A, Corti, C, Coste, B, Cui, Z, Dai, M, Delgado, C, Della Torre, S, Demirköz, M, Derome, L, Di Falco, S, Di Masso, L, Dimiccoli, F, Díaz, C, von Doetinchem, P, Du, W, Duranti, M, D’Urso, D, Eline, A, Eppling, F, Eronen, T, Fan, Y, Farnesini, L, Feng, J, Fiandrini, E, Fiasson, A, Finch, E, Fisher, P, Galaktionov, Y, Gallucci, G, García, B, García López, R, Gast, H, Gebauer, I, Gervasi, M, Ghelfi, A, Gillard, W, Giovacchini, F, Goglov, P, Gong, J, Goy, C, Grabski, V, Grandi, D, Graziani, M, Guandalini, C, Guerri, I, Guo, K, Habiby, M, Haino, S, Han, K, He, Z, Heil, M, Hoffman, J, Hsieh, T, Huang, Z, Huh, C, Incagli, M, Ionica, M, Jang, W, Jinchi, H, Kanishev, K, Kim, G, Kim, K, Kirn, T, Kossakowski, R, Kounina, O, Kounine, A, Koutsenko, V, Krafczyk, M, Kunz, S, LA VACCA, G, Laudi, E, Laurenti, G, Lazzizzera, I, Lebedev, A, Lee, H, Lee, S, Leluc, C, Li, H, Li, J, Li, Q, Li, T, Li, W, Li, Y, Li, Z, Lim, S, Lin, C, Lipari, P, Lippert, T, Liu, D, Liu, H, Lomtadze, T, Lu, M, Lu, Y, Luebelsmeyer, K, Luo, F, Luo, J, Lv, S, Majka, R, Malinin, A, Mañá, C, Marín, J, Martin, T, Martínez, G, Masi, N, Maurin, D, Menchaca Rocha, A, Meng, Q, Mo, D, Morescalchi, L, Mott, P, Müller, M, Ni, J, Nikonov, N, Nozzoli, F, Nunes, P, Obermeier, A, Oliva, A, Orcinha, M, Palmonari, F, Palomares, C, Paniccia, M, Papi, A, Pedreschi, E, Pensotti, S, Pereira, R, Pilo, F, Piluso, A, Pizzolotto, C, Plyaskin, V, Pohl, M, Poireau, V, Postaci, E, Putze, A, Quadrani, L, Qi, X, Rancoita, P, Rapin, D, Ricol, J, Rodríguez, I, Rosier Lees, S, Rozhkov, A, Rozza, D, Sagdeev, R, Sandweiss, J, Saouter, P, Sbarra, C, Schael, S, Schmidt, S, Schuckardt, D, von Dratzig, A, Schwering, G, Scolieri, G, Seo, E, Shan, B, Shan, Y, Shi, J, Shi, X, Shi, Y, Siedenburg, T, Son, D, Spada, F, Spinella, F, Sun, W, Tacconi, M, Tang, C, Tang, X, Tang, Z, Tao, L, Tescaro, D, Ting, S, Tomassetti, N, Torsti, J, Türkoğlu, C, Urban, T, Vagelli, V, Valente, E, Vannini, C, Valtonen, E, Vaurynovich, S, Vecchi, M, Velasco, M, Vialle, J, Wang, L, Wang, Q, Wang, R, Wang, X, Wang, Z, Weng, Z, Whitman, K, Wienkenhöver, J, Wu, H, Xia, X, Xie, M, Xie, S, Xiong, R, Xin, G, Xu, N, Xu, W, Yan, Q, Yang, J, Yang, M, Ye, Q, Yi, H, Yu, Y, Yu, Z, Zeissler, S, Zhang, J, Zhang, M, Zhang, X, Zhang, Z, Zheng, Z, Zhuang, H, Zhukov, V, Zichichi, A, Zimmermann, N, Zuccon, P, Zurbach, C, LA VACCA, GIUSEPPE, ROZZA, DAVIDE, Zurbach, C., BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, and TACCONI, MAURO
Abstract: Precision measurements by the Alpha Magnetic Spectrometer on the International Space Station of the primary cosmic-ray electron flux in the range 0.5 to 700 GeV and the positron flux in the range 0.5 to 500 GeV are presented. The electron flux and the positron flux each require a description beyond a single power-law spectrum. Both the electron flux and the positron flux change their behavior at ∼30 GeV but the fluxes are significantly different in their magnitude and energy dependence. Between 20 and 200 GeV the positron spectral index is significantly harder than the electron spectral index. The determination of the differing behavior of the spectral indices versus energy is a new observation and provides important information on the origins of cosmic-ray electrons and positrons.
Published: 2014

21. Beppo and space research in Italy

Author: Boella, Giuliano, primary
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22. Antarctic activities of the Milano Bicocca Radio Group: a Status Report

Author: BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, PASSERINI, ANDREA, SIRONI, GIORGIO, ZANNONI, MARIO, Tartari, A, Boella, G, Gervasi, M, Passerini, A, Sironi, G, Tartari, A, and Zannoni, M
Subjects: FIS/05 - ASTRONOMIA E ASTROFISICA, Astronomy
Abstract: The Milano Bicocca Radio Group has a long experience of astrophysical and cosmological observations made at the Amundsen Scott Base at South Pole, Terra Nova Bay and at Dome C with existing equipment and ad hoc experiments. Present activities are in the field of CMB Polarimetry and Radiometry at mm and sub-mm wavelengths.
Published: 2003

23. Observations at millimetric and submillimetric wavelenghts from Antarctica: Activity Report

Author: SIRONI, GIORGIO, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, ZANNONI, MARIO, Tartari, A, Sironi, G, Boella, G, Gervasi, M, Tartari, A, and Zannoni, M
Subjects: millimetric astronomy, submillimetric astronomt, antarctic astrophysics
Abstract: The level of fit and fill of the prosthetic stem in the femoral canal is an important parameter when planning a cementless total hip arthroplasty. However, the standard templates used in combination with radiographs are not always effective in the pre-operative evaluation of the level of fitting. For this reason, two algorithms were developed able to provide clinically relevant three-dimensional indicators of the implant fit and fill in the host femur, based on the CT data of each specific patient as collected in vivo. In this study the computational methods were described and validated using digital phantom datasets. Then the algorithms were applied for in vivo datasets and the sensitivity of each indicator was evaluated. The validation showed that the two algorithms are accurate from a computational point of view. Moreover, the in vivo testing demonstrated that the developed methods provide reasonable quantitative indicators of the stem positioning in the femoral CT dataset. © 2003 Elsevier Ireland Ltd. All rights reserved.
Published: 2003

24. Sunyaev-Zel'dovich effect studies with MASTER

Author: Tartari, A, Candotti, M, Natale, V, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, PASSERINI, ANDREA, SIRONI, GIORGIO, ZANNONI, MARIO, Tartari, A, Boella, G, Candotti, M, Gervasi, M, Natale, V, Passerini, A, Sironi, G, and Zannoni, M
Subjects: cosmic microwave background, cosmology:observations, instrumentation: miscellaneous
Abstract: Our three frequencies radiometer MASTER, which allows low noise observations in three frequency intervals around 90, 220 and 345 GHz is being completed. We discuss the possibility of exploiting the MASTER's characteristics for studies of the Sunyaev Zel'dovich effect from the Antartic Plateau and propose an observational program from Dome C.
Published: 2003

25. An improved upper limit to the CMB circular polarization at large angular scales

Author: Mainini, R, Minelli, D, Gervasi, M, Boella, G, Sironi, G, Bau', A, Banfi, S, Passerini, A, DE LUCIA, A, Cavaliere, F, MAININI, ROBERTO, GERVASI, MASSIMO, BOELLA, GIULIANO FILIPPO, SIRONI, GIORGIO, BAU', ALESSANDRO, BANFI, STEFANO, PASSERINI, ANDREA, DE LUCIA, ANTONIO, Cavaliere, F., Mainini, R, Minelli, D, Gervasi, M, Boella, G, Sironi, G, Bau', A, Banfi, S, Passerini, A, DE LUCIA, A, Cavaliere, F, MAININI, ROBERTO, GERVASI, MASSIMO, BOELLA, GIULIANO FILIPPO, SIRONI, GIORGIO, BAU', ALESSANDRO, BANFI, STEFANO, PASSERINI, ANDREA, DE LUCIA, ANTONIO, and Cavaliere, F.
Published: 2013

26. Latitudinal Dependence of Cosmic Rays Modulation at 1 AU and Interplanetary Magnetic Field Polar Correction

Author: Bobik, P, Boella, G, Boschini, M, Consolandi, C, Della Torre, S, Gervasi, M, Grandi, D, Kudela, K, Pensotti, S, Rancoita, P, Rozza, D, Tacconi, M, ROZZA, DAVIDE, BOELLA, GIULIANO FILIPPO, CONSOLANDI, CRISTINA, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, TACCONI, MAURO, Bobik, P, Boella, G, Boschini, M, Consolandi, C, Della Torre, S, Gervasi, M, Grandi, D, Kudela, K, Pensotti, S, Rancoita, P, Rozza, D, Tacconi, M, ROZZA, DAVIDE, BOELLA, GIULIANO FILIPPO, CONSOLANDI, CRISTINA, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, and TACCONI, MAURO
Abstract: The cosmic rays differential intensity inside the heliosphere, for energy below 30 GeV/nuc, depends on solar activity and interplanetary magnetic field polarity. This variation, termed solar modulation, is described using a 2D (radius and colatitude)Monte Carlo approach for solving the Parker transport equation that includes diffusion, convection, magnetic drift, and adiabatic energy loss. Since the whole transport is strongly related to the interplanetary magnetic field (IMF) structure, a better understanding of his description is needed in order to reproduce the cosmic rays intensity at the Earth, as well as outside the ecliptic plane. In this work an interplanetary magnetic field model including the standard description on ecliptic region and a polar correction is presented. This treatment of the IMF, implemented in the HelMod Monte Carlo code (version 2.0), was used to determine the effects on the differential intensity of Proton at 1 AU and allowed one to investigate how latitudinal gradients of proton intensities, observed in the inner heliosphere with the Ulysses spacecraft during 1995, can be affected by the modification of the IMF in the polar regions.
Published: 2013

27. Dual output polarimeter devoted to the study of the Cosmic Microwave Background

Author: Fineschi S., Gervasi, M, Boella, G, Cavaliere, F, Grossetti, G, Passerini, A, Sironi, G, Tartari, A, Zannoni, M, GERVASI, MASSIMO, BOELLA, GIULIANO FILIPPO, GROSSETTI, GIOVANNI FRANCESCO, PASSERINI, ANDREA, SIRONI, GIORGIO, TARTARI, ANDREA, ZANNONI, MARIO, Fineschi S., Gervasi, M, Boella, G, Cavaliere, F, Grossetti, G, Passerini, A, Sironi, G, Tartari, A, Zannoni, M, GERVASI, MASSIMO, BOELLA, GIULIANO FILIPPO, GROSSETTI, GIOVANNI FRANCESCO, PASSERINI, ANDREA, SIRONI, GIORGIO, TARTARI, ANDREA, and ZANNONI, MARIO
Abstract: We have developed a correlation radiometer at 33 GHz devoted to the search for the residual polarization of the Cosmic Microwave Background (CMB). The two instrument's outputs are a linear combination of two Stokes parameters. The instrument is therefore directly sensitive to the polarized component of the radiation (rispectively linear and circular). The radiometer has a beamwidth of 7 or 14 degree, but it can be coupled to a telescope increasing the resolution. The expected CMB polarization is at most a part per million. The polarimeter has been designed to be sensitive to this faint signal, and it has been optimized to improve its long term stability, observing from the ground. In this contribution the performances of the instrument are presented, together with the preliminary tests and observations.
Published: 2012

28. On Quasi-Periodic Variations of Cosmic Rays

Author: Giani, S, Leroy, C, Rancoita, PG, Kudela, K, Bobik, P, Boella, G, Boschini, M, Consolandi, C, Della Torre, S, Gervasi, M, Grandi, D, Pensotti, S, Rancoita, P, Tacconi, M, BOELLA, GIULIANO FILIPPO, Boschini, MJ, CONSOLANDI, CRISTINA, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, TACCONI, MAURO, Giani, S, Leroy, C, Rancoita, PG, Kudela, K, Bobik, P, Boella, G, Boschini, M, Consolandi, C, Della Torre, S, Gervasi, M, Grandi, D, Pensotti, S, Rancoita, P, Tacconi, M, BOELLA, GIULIANO FILIPPO, Boschini, MJ, CONSOLANDI, CRISTINA, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, and TACCONI, MAURO
Abstract: Selected results of experimental studies of quasi-periodic variations of cosmic rays obtained from ground based measurements, especially from neutron monitor Climax, are reviewed. At high frequencies the dominant periodicity is the solar diurnal variation and its higher harmonics. The slope of power spectrum density at high frequencies is flatter for solar maxima than for solar minima. Wavelet spectra are useful tool for checking the fine strucure of quasi-periodicities and their temporal behaviour. The ~27 day, ~13.5 day and ~9 day quasi-periodicity is far more complex than the diurnal one. For ~27 day variation, two local peaks are temporarily observed, one near 27 and second one near 30-31 days with variable contribution to the signal. ~150 days, ~1.7 yr periodicities are clearly seen in the Lomb-Scargle periodogram.
Published: 2012

29. Systematic investigation of solar modulation of galactic protons for solar cycle 23 using A Monte Carlo approach with particle drift effects and latitudinal dependence

Author: Bobik, P, Boella, G, Boschini, M, Consolandi, C, Della Torre, S, Gervasi, M, Grandi, D, Kudela, K, Pensotti, S, Rancoita, P, Tacconi, M, BOELLA, GIULIANO FILIPPO, CONSOLANDI, CRISTINA, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, TACCONI, MAURO, Bobik, P, Boella, G, Boschini, M, Consolandi, C, Della Torre, S, Gervasi, M, Grandi, D, Kudela, K, Pensotti, S, Rancoita, P, Tacconi, M, BOELLA, GIULIANO FILIPPO, CONSOLANDI, CRISTINA, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, and TACCONI, MAURO
Abstract: A propagation model of galactic cosmic protons through the heliosphere was implemented using a two-dimensional Monte Carlo approach to determine the differential intensities of protons during solar cycle 23. The model includes the effects due to the variation of solar activity during the propagation of cosmic rays from the boundary of the heliopause down to Earth's position. Drift effects are also accounted for. The simulated spectra were found to be in agreement with those obtained from experimental observations carried out by the BESS, AMS, and PAMELA collaborations. In addition, the modulated spectrum determined with the present code for the year 1995 exhibits the latitudinal gradient and equatorial southward offset minimum found by the Ulysses fast scan in 1995.
Published: 2012

30. Isotopic composition of light nuclei in cosmic rays: results from ams-01

Author: Aguilar, M, Alcaraz, J, Allaby, J, Alpat, B, Ambrosi, G, Anderhub, H, Ao, L, Arefiev, A, Arruda, L, Azzarello, P, Basile, M, Barao, F, Barreira, G, Bartoloni, A, Battiston, R, Becker, R, Becker, U, Bellagamba, L, Berdugo, J, Berges, P, Bertucci, B, Biland, A, Bindi, V, Boella, G, Boschini, M, Bourquin, M, Bruni, G, Buénerd, M, Burger, J, Burger, W, Cai, X, Cannarsa, P, Capell, M, Casadei, D, Casaus, J, Castellini, G, Cernuda, I, Chang, Y, Chen, H, Chen, Z, Chernoplekov, N, Chiueh, T, Choi, Y, Cindolo, F, Commichau, V, Contin, A, Cortina Gil, E, Crespo, D, Cristinziani, M, Dai, T, dela Guia, C, Delgado, C, Di Falco, S, Djambazov, L, D’Antone, I, Dong, Z, Duranti, M, Engelberg, J, Eppling, F, Eronen, T, Extermann, P, Favier, J, Fiandrini, E, Fisher, P, Flügge, G, Fouque, N, Galaktionov, Y, Gervasi, M, Giovacchini, F, Giusti, P, Grandi, D, Grimm, O, Gu, W, Haino, S, Hangarter, K, Hasan, A, Hermel, V, Hofer, H, Hungerford, W, Ionica, M, Jongmanns, M, Karlamaa, K, Karpinski, W, Kenney, G, Kim, D, Kim, G, Kim, K, Kirn, T, Klimentov, A, Kossakowski, R, Kounine, A, Koutsenko, V, Kraeber, M, Laborie, G, Laitinen, T, Lamanna, G, Laurenti, G, Lebedev, A, Lechanoine Leluc, C, Lee, M, Lee, S, Levi, G, Lin, C, Liu, H, Lu, G, Lu, Y, Lübelsmeyer, K, Luckey, D, Lustermann, W, Maña, C, Margotti, A, Mayet, F, Mcneil, R, Menichelli, M, Mihul, A, Mujunen, A, Natale, S, Oliva, A, Palmonari, F, Paniccia, M, Park, H, Park, W, Pauluzzi, M, Pauss, F, Pereira, R, Perrin, E, Pevsner, A, Pilo, F, Pimenta, M, Plyaskin, V, Pojidaev, V, Pohl, M, Produit, N, Quadrani, L, Rancoita, P, Rapin, D, Ren, D, Ren, Z, Ribordy, M, Riihonen, E, Ritakari, J, Ro, S, Roeser, U, Sagdeev, R, Santos, D, Sartorelli, G, Saouter, P, Sbarra, C, Schael, S, von Dratzig, A, Schwering, G, Seo, E, Shin, J, Shoumilov, E, Shoutko, V, Siedenburg, T, Siedling, R, Son, D, Song, T, Spada, F, Spinella, F, Steuer, M, Sun, G, Suter, H, Tang, X, Ting, S, Tomassetti, N, Tornikoski, M, Torsti, J, Trümper, J, Ulbricht, J, Urpo, S, Valtonen, E, Vandenhirtz, J, Velikhov, E, Verlaat, B, Vetlitsky, I, Vezzu, F, Vialle, J, Viertel, G, Vité, D, Von Gunten, H, Wicki, S, Wallraff, W, Wang, J, Wiik, K, Williams, C, Wu, S, Xia, P, Xu, S, Xu, Z, Yan, J, Yan, L, Yang, C, Yang, J, Yang, M, Ye, S, Zhang, H, Zhang, Z, Zhao, D, Zhou, F, Zhou, Y, Zhu, G, Zhu, W, Zhuang, H, Zichichi, A, Zimmermann, B, Zuccon, P, McNeil, R, Zuccon, P., BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, Aguilar, M, Alcaraz, J, Allaby, J, Alpat, B, Ambrosi, G, Anderhub, H, Ao, L, Arefiev, A, Arruda, L, Azzarello, P, Basile, M, Barao, F, Barreira, G, Bartoloni, A, Battiston, R, Becker, R, Becker, U, Bellagamba, L, Berdugo, J, Berges, P, Bertucci, B, Biland, A, Bindi, V, Boella, G, Boschini, M, Bourquin, M, Bruni, G, Buénerd, M, Burger, J, Burger, W, Cai, X, Cannarsa, P, Capell, M, Casadei, D, Casaus, J, Castellini, G, Cernuda, I, Chang, Y, Chen, H, Chen, Z, Chernoplekov, N, Chiueh, T, Choi, Y, Cindolo, F, Commichau, V, Contin, A, Cortina Gil, E, Crespo, D, Cristinziani, M, Dai, T, dela Guia, C, Delgado, C, Di Falco, S, Djambazov, L, D’Antone, I, Dong, Z, Duranti, M, Engelberg, J, Eppling, F, Eronen, T, Extermann, P, Favier, J, Fiandrini, E, Fisher, P, Flügge, G, Fouque, N, Galaktionov, Y, Gervasi, M, Giovacchini, F, Giusti, P, Grandi, D, Grimm, O, Gu, W, Haino, S, Hangarter, K, Hasan, A, Hermel, V, Hofer, H, Hungerford, W, Ionica, M, Jongmanns, M, Karlamaa, K, Karpinski, W, Kenney, G, Kim, D, Kim, G, Kim, K, Kirn, T, Klimentov, A, Kossakowski, R, Kounine, A, Koutsenko, V, Kraeber, M, Laborie, G, Laitinen, T, Lamanna, G, Laurenti, G, Lebedev, A, Lechanoine Leluc, C, Lee, M, Lee, S, Levi, G, Lin, C, Liu, H, Lu, G, Lu, Y, Lübelsmeyer, K, Luckey, D, Lustermann, W, Maña, C, Margotti, A, Mayet, F, Mcneil, R, Menichelli, M, Mihul, A, Mujunen, A, Natale, S, Oliva, A, Palmonari, F, Paniccia, M, Park, H, Park, W, Pauluzzi, M, Pauss, F, Pereira, R, Perrin, E, Pevsner, A, Pilo, F, Pimenta, M, Plyaskin, V, Pojidaev, V, Pohl, M, Produit, N, Quadrani, L, Rancoita, P, Rapin, D, Ren, D, Ren, Z, Ribordy, M, Riihonen, E, Ritakari, J, Ro, S, Roeser, U, Sagdeev, R, Santos, D, Sartorelli, G, Saouter, P, Sbarra, C, Schael, S, von Dratzig, A, Schwering, G, Seo, E, Shin, J, Shoumilov, E, Shoutko, V, Siedenburg, T, Siedling, R, Son, D, Song, T, Spada, F, Spinella, F, Steuer, M, Sun, G, Suter, H, Tang, X, Ting, S, Tomassetti, N, Tornikoski, M, Torsti, J, Trümper, J, Ulbricht, J, Urpo, S, Valtonen, E, Vandenhirtz, J, Velikhov, E, Verlaat, B, Vetlitsky, I, Vezzu, F, Vialle, J, Viertel, G, Vité, D, Von Gunten, H, Wicki, S, Wallraff, W, Wang, J, Wiik, K, Williams, C, Wu, S, Xia, P, Xu, S, Xu, Z, Yan, J, Yan, L, Yang, C, Yang, J, Yang, M, Ye, S, Zhang, H, Zhang, Z, Zhao, D, Zhou, F, Zhou, Y, Zhu, G, Zhu, W, Zhuang, H, Zichichi, A, Zimmermann, B, Zuccon, P, McNeil, R, Zuccon, P., BOELLA, GIULIANO FILIPPO, and GERVASI, MASSIMO
Abstract: The variety of isotopes in cosmic rays allows us to study different aspects of the processes that cosmic rays undergo between the time they are produced and the time of their arrival in the heliosphere. In this paper, we present measurements of the isotopic ratios 2H/4He, 3He/4He, 6Li/7Li, 7Be/(9Be+10Be), and 10B/11B in the range 0.2–1.4 GeV of kinetic energy per nucleon. The measurements are based on the data collected by the Alpha Magnetic Spectrometer, AMS-01, during the STS-91 flight in 1998 June.
Published: 2011

31. Proton modulation in the Heliosphere for different solar conditions and prediction for AMS-02

Author: Giani, S, Leroy, C, Rancoita, PG, Bobik, P, Boella, G, Boschini, M, Consolandi, C, Della Torre, S, Gervasi, M, Grandi, D, Kudela, K, Memola, E, Pensotti, S, Rancoita, P, Tacconi, M, Boschini, MJ, BOELLA, GIULIANO FILIPPO, CONSOLANDI, CRISTINA, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, TACCONI, MAURO, Giani, S, Leroy, C, Rancoita, PG, Bobik, P, Boella, G, Boschini, M, Consolandi, C, Della Torre, S, Gervasi, M, Grandi, D, Kudela, K, Memola, E, Pensotti, S, Rancoita, P, Tacconi, M, Boschini, MJ, BOELLA, GIULIANO FILIPPO, CONSOLANDI, CRISTINA, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, and TACCONI, MAURO
Abstract: Spectra of Galactic Cosmic Rays (GCRs) measured at the Earth are the combination of several processes: sources production and acceleration, propagation in the interstellar medium and propagation in the heliosphere. Inside the solar cavity the intensity of GCRs is reduced due to the solar modulation, the interaction which they have with the interplanetary medium. We realized a 2D stochastic simulation of solar modulation to reproduce CR spectra at the Earth, and evaluated the importance in our results of the Local Interstellar Spectrum (LIS) model and its agreement with data at high energy. We show a good agreement between our model and the data taken by AMS-01 and BESS experiments during periods with different solar activity conditions. Furthermore we made a prediction for the differential intensity which will be measured by AMS-02 experiment.
Published: 2011

32. AMS-02 photon data reduction approach

Author: Giani, S, Leroy, C, Rancoita, PG, Boella, G, Boschini, M, Consolandi, C, Della Torre, S, Gervasi, M, Grandi, D, Memola, E, Pensotti, S, Rancoita, P, Tacconi, M, BOELLA, GIULIANO FILIPPO, CONSOLANDI, CRISTINA, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, TACCONI, MAURO, Boschini, MJ, Giani, S, Leroy, C, Rancoita, PG, Boella, G, Boschini, M, Consolandi, C, Della Torre, S, Gervasi, M, Grandi, D, Memola, E, Pensotti, S, Rancoita, P, Tacconi, M, BOELLA, GIULIANO FILIPPO, CONSOLANDI, CRISTINA, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, TACCONI, MAURO, and Boschini, MJ
Abstract: The Alpha Magnetic Spectrometer (AMS-02) is going to be launched next February 2011 from the Kennedy Space Center. It will be located by the Space Shuttle on the International Space Station and will have its same lifetime: 10 years or even more. The experiment will observe high energy gamma-ray photons from several Astrophysical sources. We consider here the AMS-02 single-photon-mode, i.e. gamma ray photons revealed by the ECAL through electromagnetic shower production. By means of Monte Carlo simulations and Test Beam data, we present a preliminary approach to the gamma-ray photon selection procedure and discuss the potentiality of the detector.
Published: 2011

33. Energy loss for electrons in the Heliosphere and local interstellar spectrum for solar modulation

Author: Giani, S, Leroy, C, Rancoita, PG, Bobik, P, Boella, G, Boschini, M, Consolandi, C, Della Torre, S, Gervasi, M, Grandi, D, Elmo, M, Kudela, K, Memola, E, Pensotti, S, Rancoita, P, Rozza, D, Tacconi, M, Boschini, MJ, ROZZA, DAVIDE, BOELLA, GIULIANO FILIPPO, CONSOLANDI, CRISTINA, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, TACCONI, MAURO, Giani, S, Leroy, C, Rancoita, PG, Bobik, P, Boella, G, Boschini, M, Consolandi, C, Della Torre, S, Gervasi, M, Grandi, D, Elmo, M, Kudela, K, Memola, E, Pensotti, S, Rancoita, P, Rozza, D, Tacconi, M, Boschini, MJ, ROZZA, DAVIDE, BOELLA, GIULIANO FILIPPO, CONSOLANDI, CRISTINA, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, and TACCONI, MAURO
Abstract: Galactic Cosmic Rays (GCR) entering the Heliosphere are a®ected by the solar modulation, a combination of di®usion, convection, magnetic drift and adiabatic energy loss usually seen as a decrease in the °ux at low energy (less than » 10 GeV). We have improved a quasi time-dependent 2D Stochastic Simulation code describing this e®ects. We focused our attention on the electron modulation, adding energy losses in the Heliosphere that can be neglected for protons and ions: inverse Compton, ionization, synchrotron and bremsstrahlung. These effects have been evaluated in the region affected by the solar magnetic field, up to 100 AU, where the environment conditions are not constant, especially the magnetic field intensity and the photon density. In our calculation the inverse compton energy losses are dominant, but they contribute only a few percent in comparison with the adiabatic losses. We also compared the Local Interstellar Spectrum (LIS) of primary electrons with experimental data collected in the past years at energies > 20 GeV. We found that, inside one standard deviation, LIS fits the data and can be used in a Monte carlo code reproducing CR propagation in the Heliosphere.
Published: 2011

34. Drift models and polar field for Cosmic Rays propagation in the Heliosphere

Author: Leroy, C, Rancoita, PG, Barone, M, Gaddi, A, Price, L, Ruchti, R, Bobik, P, Boella, G, Boschini, M, Della Torre, S, Gervasi, M, Grandi, D, Kudela, K, Pensotti, S, Rancoita, P, BOELLA, GIULIANO FILIPPO, Boschini, MJ, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, Leroy, C, Rancoita, PG, Barone, M, Gaddi, A, Price, L, Ruchti, R, Bobik, P, Boella, G, Boschini, M, Della Torre, S, Gervasi, M, Grandi, D, Kudela, K, Pensotti, S, Rancoita, P, BOELLA, GIULIANO FILIPPO, Boschini, MJ, GERVASI, MASSIMO, and PENSOTTI, SIMONETTA
Abstract: We developed a two dimensional (2D) Stochastic Montecarlo code for the Cosmic Rays propagation in the Heliosphere. We used the most recent observations in order to model drift, polar field geometry and Solar Wind latitudinal dependence and to reproduce the measured fluxes. We tested 3 different drift models and compared results with data of AMS-01, IMAX, CAPRICE and BESS 2002, finding the best set of parameters for different periods of solar activity
Published: 2010

35. Relative composition and energy spectra of light nuclei in cosmic rays: Results from AMS-01

Author: Aguilar, M, Alcaraz, J, Allaby, J, Alpat, B, Ambrosi, G, Anderhub, H, Ao, L, Arefiev, A, Arruda, A, Azzarello, P, Basile, M, Barao, F, Barreira, G, Bartoloni, A, Battiston, R, Becker, R, Becker, U, Bellagamba, L:, B, P, Berdugo, J, Berges, P, Bertucci, B, Biland, A, Bindi, V, Boella, G, Boschini, M, Bourquin, M, Bruni, G, Buenerd, M, Burger, J, Burger, W, Cai, X, Cannarsa, P, Capell, M, Casadei, D, Casaus, J, Castellini, G, Cernuda, I, Chang, Y, Chen, H, Chen, Z, Chernoplekov, N, Chiueh, T, Choi, Y, Cindolo, F, Commichau, V, Contin, A, Cortina Gil, E, Crespo, D, Cristinziani, M, Dai, T, dela Guia, C, Delgado, C, Di Falco, S, Djambazov, L, D’Antone, I, Dong, Z, Duranti, M, Engelberg, J, Eppling, F, Eronen, T, Extermann, P, Favier, J, Fiandrini, E, Fisher, P, Flugge, G, Fouque, N, Galaktionov, Y, Gervasi, M, Giovacchini, F, Giusti, P, Grandi, D, Grimm, O, Gu, W, Haino, S, Hangarter, K, Hasan, A, Hermel, V, Hofer, H, Hungerford, W, Ionica, M, Jongmanns, M, Karlamaa, K, Karpinski, W, Kenney, G, Kim, D, Kim, G, Kim, K, Kirn, T, Klimentov, A, Kossakowski, R, Kounine, A, Koutsenko, V, Kraeber, M, Laborie, G, Laitinen, T, Lamanna, G, Laurenti, G, Lebedev, A, Lechanoine Leluc, C, Lee, M, Lee, S, Levi, G, Lin, C, Liu, H, Lu, G, Lu, Y, Lubelsmeyer, K, Luckey, D, Lustermann, W, Mana, C, Margotti, A, Mayet, F, Mcneil, R, Menichelli, M, Mihul, A, Mujunen, A, Oliva, A, Palmonari, F, Park, H, Park, W, Pauluzzi, M, Pauss, F, Pereira, R, Perrin, E, Pevsner, A, Pilo, F, Pimenta, M, Plyaskin, V, Pojidaev, V, Pohl, M, Produit, N, Quadrani, L, Rancoita, P, Rapin, D, Ren, D, Ren, Z, Ribordy, M, Richeux, J, Riihonen, E, Ritakari, J, Ro, S, Roeser, U, Sagdeev, R, Santos, D, Sartorelli, G, Sbarra, C, Schael, S, Schultz von Dratzig, A, Schwering, G, Seo, E, Shin, J, Shoumilov, E, Shoutko, V, Siedenburg, T, Siedling, R, Son, D, Song, T, Spada, F, Spinella, F, Steuer, M, Sun, G, Suter, H, Tang, H, Ting, S, Tomassetti, N, Tornikoski, M, Torsti, J, Trumper, J, Ulbricht, J, Urpo, S, Valtonen, E, Vandenhirtz, J, Velikhov, E, Verlaat, B, Vetlitsky, I, Vezzu, F, Vialle, J, Vierte, G, Vite, D, Von Gunten, H, Waldmeier Wicki, S, Wallraff, W, Wang, J, Wiik, K, Williams, C, Wu, S, Xia, P, Xu, S, Xu, Z, Yan, J, Yan, L, Yang, C, Yang, J, Yang, M, Ye, S, Zhang, H, Zhang, Z, Zhao, D, Zhou, F, Zhou, Y, Zhu, G, Zhu, W, Zhuang, H, Zichichi, A, Zimmermann, B, Zuccon, P, L: Bene, BOELLA, GIULIANO FILIPPO, Burger, JD, Burger, WJ, Cai, XD, Chang, YH, Chen, HF, Chen, HS, Chen, ZG, Chernoplekov, NA, Chiueh, TH, Choi, YY, Dai, TS, Dong, ZR, Eppling, FJ, Fisher, PH, GERVASI, MASSIMO, Gu, WQ, Kim, DH, Kim, GN, Kim, KS, Lee, MW, Lee, SC, Lin, CH, Liu, HT, Lu, YS, McNeil, RR, Park, HB, Park, WH, Rancoita, PG, Richeux, JP, Seo, ES, Shin, JH, Spada, FR, Sun, GS, Tang, HW, Ting, SCC, Ting, SM, Vialle, JP, Wang, JZ, Xia, PC, Xu, ZZ, Yan, JL, Yan, LG, Yang, CG, Ye, SW, Zhang, HY, Zhang, ZP, Zhao, DX, Zhu, GY, Zhu, WZ, Zhuang, HL, Zuccon, P., Aguilar, M, Alcaraz, J, Allaby, J, Alpat, B, Ambrosi, G, Anderhub, H, Ao, L, Arefiev, A, Arruda, A, Azzarello, P, Basile, M, Barao, F, Barreira, G, Bartoloni, A, Battiston, R, Becker, R, Becker, U, Bellagamba, L:, B, P, Berdugo, J, Berges, P, Bertucci, B, Biland, A, Bindi, V, Boella, G, Boschini, M, Bourquin, M, Bruni, G, Buenerd, M, Burger, J, Burger, W, Cai, X, Cannarsa, P, Capell, M, Casadei, D, Casaus, J, Castellini, G, Cernuda, I, Chang, Y, Chen, H, Chen, Z, Chernoplekov, N, Chiueh, T, Choi, Y, Cindolo, F, Commichau, V, Contin, A, Cortina Gil, E, Crespo, D, Cristinziani, M, Dai, T, dela Guia, C, Delgado, C, Di Falco, S, Djambazov, L, D’Antone, I, Dong, Z, Duranti, M, Engelberg, J, Eppling, F, Eronen, T, Extermann, P, Favier, J, Fiandrini, E, Fisher, P, Flugge, G, Fouque, N, Galaktionov, Y, Gervasi, M, Giovacchini, F, Giusti, P, Grandi, D, Grimm, O, Gu, W, Haino, S, Hangarter, K, Hasan, A, Hermel, V, Hofer, H, Hungerford, W, Ionica, M, Jongmanns, M, Karlamaa, K, Karpinski, W, Kenney, G, Kim, D, Kim, G, Kim, K, Kirn, T, Klimentov, A, Kossakowski, R, Kounine, A, Koutsenko, V, Kraeber, M, Laborie, G, Laitinen, T, Lamanna, G, Laurenti, G, Lebedev, A, Lechanoine Leluc, C, Lee, M, Lee, S, Levi, G, Lin, C, Liu, H, Lu, G, Lu, Y, Lubelsmeyer, K, Luckey, D, Lustermann, W, Mana, C, Margotti, A, Mayet, F, Mcneil, R, Menichelli, M, Mihul, A, Mujunen, A, Oliva, A, Palmonari, F, Park, H, Park, W, Pauluzzi, M, Pauss, F, Pereira, R, Perrin, E, Pevsner, A, Pilo, F, Pimenta, M, Plyaskin, V, Pojidaev, V, Pohl, M, Produit, N, Quadrani, L, Rancoita, P, Rapin, D, Ren, D, Ren, Z, Ribordy, M, Richeux, J, Riihonen, E, Ritakari, J, Ro, S, Roeser, U, Sagdeev, R, Santos, D, Sartorelli, G, Sbarra, C, Schael, S, Schultz von Dratzig, A, Schwering, G, Seo, E, Shin, J, Shoumilov, E, Shoutko, V, Siedenburg, T, Siedling, R, Son, D, Song, T, Spada, F, Spinella, F, Steuer, M, Sun, G, Suter, H, Tang, H, Ting, S, Tomassetti, N, Tornikoski, M, Torsti, J, Trumper, J, Ulbricht, J, Urpo, S, Valtonen, E, Vandenhirtz, J, Velikhov, E, Verlaat, B, Vetlitsky, I, Vezzu, F, Vialle, J, Vierte, G, Vite, D, Von Gunten, H, Waldmeier Wicki, S, Wallraff, W, Wang, J, Wiik, K, Williams, C, Wu, S, Xia, P, Xu, S, Xu, Z, Yan, J, Yan, L, Yang, C, Yang, J, Yang, M, Ye, S, Zhang, H, Zhang, Z, Zhao, D, Zhou, F, Zhou, Y, Zhu, G, Zhu, W, Zhuang, H, Zichichi, A, Zimmermann, B, Zuccon, P, L: Bene, BOELLA, GIULIANO FILIPPO, Burger, JD, Burger, WJ, Cai, XD, Chang, YH, Chen, HF, Chen, HS, Chen, ZG, Chernoplekov, NA, Chiueh, TH, Choi, YY, Dai, TS, Dong, ZR, Eppling, FJ, Fisher, PH, GERVASI, MASSIMO, Gu, WQ, Kim, DH, Kim, GN, Kim, KS, Lee, MW, Lee, SC, Lin, CH, Liu, HT, Lu, YS, McNeil, RR, Park, HB, Park, WH, Rancoita, PG, Richeux, JP, Seo, ES, Shin, JH, Spada, FR, Sun, GS, Tang, HW, Ting, SCC, Ting, SM, Vialle, JP, Wang, JZ, Xia, PC, Xu, ZZ, Yan, JL, Yan, LG, Yang, CG, Ye, SW, Zhang, HY, Zhang, ZP, Zhao, DX, Zhu, GY, Zhu, WZ, Zhuang, HL, and Zuccon, P.
Abstract: Measurement of the chemical and isotopic composition of cosmic rays is essential for the precise understanding of their propagation in the galaxy. While the model parameters are mainly determined using the B/C ratio, the study of extended sets of ratios can provide stronger constraints on the propagation models. In this paper, the relative abundances of light-nuclei lithium, beryllium, boron, and carbon are presented. The secondary-to-primary ratios Li/C, Be/C, and B/C have been measured in the kinetic energy range 0.35-45 GeV nucleon-1. The isotopic ratio 7Li/6Li is also determined in the magnetic rigidity interval 2.5-6.3 GV. The secondary-to-secondary ratios Li/Be, Li/B, and Be/B are also reported. These measurements are based on the data collected by the Alpha Magnetic Spectrometer AMS-01 during the STS-91 space shuttle flight in 1998 June. Our experimental results are in substantial agreement with other measurements, where they exist. We describe our light-nuclei data with a diffusive-reacceleration model. A 10%-15% overproduction of Be is found in the model predictions and can be attributed to uncertainties in the production cross-section data. © 2010. The American Astronomical Society.
Published: 2010

36. Fluxes and Nuclear Abundances of Cosmic Rays inside the Magnetosphere using a Transmission Function Approach

Author: Bobik, P, Boella, G, Boschini, M, Gervasi, M, Grandi, D, Kudela, K, Pensotti, S, Rancoita, P, Boschini, MJ, Rancoita, PG, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, Bobik, P, Boella, G, Boschini, M, Gervasi, M, Grandi, D, Kudela, K, Pensotti, S, Rancoita, P, Boschini, MJ, Rancoita, PG, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, and PENSOTTI, SIMONETTA
Abstract: At 1 AU and outside the Earth's magnetosphere, the relative abundances to protons for He (He/p), C (C/p) and Fe (Fe/p) nuclei were calculated using the observation-data of AMS-01 (for p and He) and HEAO-3 (for C and Fe) above 0.8 GeV/nucleon. In addition, the transmission function (TF) for the GCR propagation inside the magnetosphere was evaluated using the IGRF and T96 (introduced by Tsyganenko and Stern) models to obtain permitted and forbidden trajectories inside the magnetosphere. The TF allowed one to derive the primary He-nuclei fluxes in the same geomagnetic regions of AMS-01 observations. These fluxes were found in good agreement with the observation data. Furthermore inside the magnetosphere in addition to the flux of helium, it allowed one to obtain those of the primary p, C, and Fe nuclei and the relative abundances of He, C and Fe nuclei to protons from the same observation-data of AMS-01 and HEAO-3 above 0.8 GeV/nucleon. Up to a geomagnetic latitude of 45.84 deg, the relative isotopic abundances were found to depend on the mass number I_isot and, on average, range from a factor 2.31 up to 3.35 larger than those outside the magnetosphere at 1 AU. Thus, the magnetospheric isotopic/nuclear relative-abundances differ from those inside the solar cavity and those in the interstellar space. The usage of the TF approach can allow one to determine the nuclear abundances in the magnetosphere at any geomagnetic latitude and, thus, any orbit, provided that the CR spectra are determined at 1 AU.
Published: 2009

37. Evaluation of the flux of CR nuclei inside the magnetosphere

Author: Boella, G, Boschini, M, Gervasi, M, Grandi, D, Pensotti, S, Rancoita, P, Bobik, P, Kudela, K, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, Rancoita, PG, Kudela, K., Boella, G, Boschini, M, Gervasi, M, Grandi, D, Pensotti, S, Rancoita, P, Bobik, P, Kudela, K, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, Rancoita, PG, and Kudela, K.
Abstract: We have evaluated Cosmic Ray trajectories inside the magnetosphere and defined a Transmission Function (TF) for the CR penetration. We have then computed the TF for Helium, Carbon and Iron nuclei. Finally the flux of primary CR Helium, Carbon and Iron has been evaluated inside the magnetosphere. The results have then been compared with calculations for protons and also with experimental data collected by AMS-01 and HEAO-3
Published: 2008

38. TRIS II: search for CMB spectral distortions at 0.60, 0.82 and 2.5 GHz

Author: Gervasi, M, Zannoni, M, Tartari, A, Boella, G, Sironi, G, GERVASI, MASSIMO, ZANNONI, MARIO, BOELLA, GIULIANO FILIPPO, SIRONI, GIORGIO, Gervasi, M, Zannoni, M, Tartari, A, Boella, G, Sironi, G, GERVASI, MASSIMO, ZANNONI, MARIO, BOELLA, GIULIANO FILIPPO, and SIRONI, GIORGIO
Abstract: With the TRIS experiment we have performed absolute measurements of the sky brightness in a sky circle at $\delta = +42^{\circ}$ at the frequencies $\nu =$ 0.60, 0.82 and 2.5 GHz. In this paper we discuss the techniques used to separate the different contributions to the sky emission and give an evaluation of the absolute temperature of the Cosmic Microwave Background. For the black-body temperature of the CMB we get: $T_{cmb}^{th}=(2.837 \pm 0.129 \pm 0.066)K$ at $\nu=0.60$ GHz; $T_{cmb}^{th}=(2.803 \pm 0.051 ^{+0.430} _{-0.300})K$ at $\nu=0.82$ GHz; $T_{cmb}^{th}=(2.516 \pm 0.139 \pm 0.284)K$ at $\nu=2.5$ GHz. The first error bar is statistic (1$\sigma$) while the second one is systematic. These results represent a significant improvement with respect to the previous measurements. We have also set new limits to the free-free distortions, $ -6.3 \times 10^{-6} < Y_{ff} < 12.6 \times 10^{-6}$, and slightly improved the Bose-Einstein upper limit, $|\mu| < 6 \times 10^{-5}$, both at 95% confidence level.
Published: 2008

39. The Contribution of the Unresolved Extragalactic Radio Sources to the Brightness Temperature of the Sky

Author: Gervasi, M, Tartari, A, Zannoni, M, Boella, G, Sironi, G, GERVASI, MASSIMO, ZANNONI, MARIO, BOELLA, GIULIANO FILIPPO, SIRONI, GIORGIO, Gervasi, M, Tartari, A, Zannoni, M, Boella, G, Sironi, G, GERVASI, MASSIMO, ZANNONI, MARIO, BOELLA, GIULIANO FILIPPO, and SIRONI, GIORGIO
Abstract: The contribution of the unresolved extragalactic radio sources to the diffuse brightness of the sky was evaluated using the source number-flux measurements available in literature. We first optimized the fitting function of the data based on the number counts' distribution. We then computed the brightness temperature at various frequencies from 151 to 8440 MHz and derived its spectral dependence. As expected the frequency dependence can be described by a power law with a spectral index $\gamma \simeq -2.7$, in agreement with the flux emitted by the steep-spectrum sources. The contribution of flat-spectrum sources becomes relevant at frequencies above several GHz. Using the data available in the literature we improved our knowledge of the brightness of the unresolved extragalactic radio sources. The results obtained have general validity and can be used to disentangle the various contributions of the sky brightness and to evaluate the cosmic microwave background (CMB) temperature.
Published: 2008

40. TRIS I: Absolute Measurements of the Sky Brightness Temperature at 0.6, 0.82 and 2.5 GHz

Author: Zannoni, M, Tartari, A, Gervasi, M, Boella, G, Sironi, G, DE LUCIA, A, Passerini, A, ZANNONI, MARIO, GERVASI, MASSIMO, BOELLA, GIULIANO FILIPPO, SIRONI, GIORGIO, DE LUCIA, ANTONIO, PASSERINI, ANDREA, Zannoni, M, Tartari, A, Gervasi, M, Boella, G, Sironi, G, DE LUCIA, A, Passerini, A, ZANNONI, MARIO, GERVASI, MASSIMO, BOELLA, GIULIANO FILIPPO, SIRONI, GIORGIO, DE LUCIA, ANTONIO, and PASSERINI, ANDREA
Abstract: At frequencies close to 1 GHz the sky diffuse radiation is a superposition of radiation of Galactic origin, the 3 K Relic or Cosmic Microwave Background Radiation, and the signal produced by unresolved extragalactic sources. Because of their different origin and space distribution the relative importance of the three components varies with frequency and depends on the direction of observation. With the aim of disentangling the components we built TRIS, a system of three radiometers, and studied the temperature of the sky at $\nu =0.6$, $\nu = 0.82$ and $\nu = 2.5$ GHz using geometrically scaled antennas with identical beams (HPBW = $18^{\circ} \times 23^{\circ}$). Observations included drift scans along a circle at constant declination $\delta=+42^{\circ}$ which provided the dependence of the sky signal on the Right Ascension, and absolute measurement of the sky temperature at selected points along the same scan circle. TRIS was installed at Campo Imperatore (lat. = $42^{\circ}~26'$ N, long.= $13^{\circ}~33'$, elevation = 2000 m a.s.l.) in Central Italy, close to the Gran Sasso Laboratory.
Published: 2008

41. Radiometers based on SIS mixers to measure SZ effect from galaxy clusters

Author: Gervasi, M, Banfi, S, Boella, G, Passerini, A, Natale, V, Sironi, G, Tartari, A, Zannoni, M, GERVASI, MASSIMO, BANFI, STEFANO, BOELLA, GIULIANO FILIPPO, PASSERINI, ANDREA, SIRONI, GIORGIO, ZANNONI, MARIO, Gervasi, M, Banfi, S, Boella, G, Passerini, A, Natale, V, Sironi, G, Tartari, A, Zannoni, M, GERVASI, MASSIMO, BANFI, STEFANO, BOELLA, GIULIANO FILIPPO, PASSERINI, ANDREA, SIRONI, GIORGIO, and ZANNONI, MARIO
Abstract: We present a project to realize radiometers devoted to the observation of the Sunyaev Zeldovich effect towards galaxy clusters. Radiometers are based on SIS mixers and are working at three frequency bands (around 94, 240 and 345 GHz) covering both the positive and negative part of the spectral displacement. The radiometers have been developed to be used at a telescope of 3 m class, like MITO. The observation program would be completed performing low frequency measurements first at the Noto radiotelescope (at 43 GHz) and then at SRT (at 40 and 90 GHz).
Published: 2007

42. The CMB spectrum: perspective of observing spectral distortions

Author: Sironi, G, Boella, G, Gervasi, M, Tartari, A, Zannoni, M, SIRONI, GIORGIO, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, ZANNONI, MARIO, Sironi, G, Boella, G, Gervasi, M, Tartari, A, Zannoni, M, SIRONI, GIORGIO, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, and ZANNONI, MARIO
Abstract: Spectral distortions (deviations from a Planck distribution) of the cosmic microwave background (CMB) are potential sources of information on the thermal history of the Universe. So far however they escaped detection. We suggest a different observational approach useful to discover Bose-Einstein distortions. © 2006 Elsevier B.V. All rights reserved.
Published: 2007

43. Magnetospheric transmission function approach to disentangle primary from secondary cosmic ray fluxes in the penumbra region

Author: Bobik, P, Boella, G, Boschini, M, Gervasi, M, Grandi, D, Kudela, K, Pensotti, S, Rancoita, P, Boschini, MJ, Rancoita, PG, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, Bobik, P, Boella, G, Boschini, M, Gervasi, M, Grandi, D, Kudela, K, Pensotti, S, Rancoita, P, Boschini, MJ, Rancoita, PG, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, and PENSOTTI, SIMONETTA
Abstract: The AMS-01 observations (in June 1998, on board the space shuttle orbiter Discovery) have shown the presence of primary (PCR) and secondary (SCR) cosmic rays (most of them protons) at a low Earth orbit (about 400 km altitude). The SCRs are mostly created in interactions with the atmosphere by fast PCRs and can be trapped or become reentrant albedo particles. Some of them seem to be sufficiently energetic to populate the ‘‘penumbra region’’ above the local geomagnetic cutoff rigidity. A backtracking procedure of simulated protons entering the AMS-01 spectrometer has provided the fraction of allowed (and hence forbidden) trajectories of PCRs. Consequently, it has allowed the determination of the so-called transmission function (TF) which is able to describe the properties of the PCR transport from the Earth’s magnetopause (i.e., the primary spectrum at 1 AU) to the atmosphere and finally the fluxes of the PCRs in the ten geomagnetic regions for AMS-01 observations. In the penumbra regions, the observed spectra of the AMS-01 geomagnetic regions have been found to be larger than those predicted for the PCRs in the penumbra region by means of the TF, i.e., some SCRs (mainly reentrant albedo protons) are also found to populate the rigidity regions above the local geomagnetic cutoff rigidity. The fraction of the secondary to overall particle flux in the penumbra region increases gradually as the geomagnetic latitude increases.
Published: 2006

44. Coherent Systems for the detection of the CMB Polarization

Author: Fabbri, R, Gervasi, M, Zannoni, M, Tartari, A, Boella, G, Sironi, G, GERVASI, MASSIMO, ZANNONI, MARIO, BOELLA, GIULIANO FILIPPO, SIRONI, GIORGIO, Fabbri, R, Gervasi, M, Zannoni, M, Tartari, A, Boella, G, Sironi, G, GERVASI, MASSIMO, ZANNONI, MARIO, BOELLA, GIULIANO FILIPPO, and SIRONI, GIORGIO
Abstract: Polarization of the Cosmic Microwave Background (CMB) is a very important tool of present day Observational Cosmology. Because the expected amplitude of the CMB polarization is very tiny (of the order of a part over 10^6 or even less), observations carried on using standard radiotelescopes are practically impossible. Ad hoc systems and methods of observations have to be studied and implemented. To confirm and extend the few positive detections so far obtained, it is essential to reach a very deep understanding of the instrumentation used for these studies and of all the sources of spurious effects which can obscure the true signal or, even worst, mimic nonexistent signals. In the following, we first look at what we can expect and has been so far detected. We then analyze the structures common to many sorts of polarimeters dedicated to CMB studies and concentrate our attention on coherent systems, which take advantage of the correlation methods to recognize the presence of a polarized signal in a much stronger sea of unpolarized radiation and polarized foregrounds. We then discuss various sorts of spurious effects and briefly compare coherent with (a) incoherent (bolometric) systems and (b) systems based on interferometric methods
Published: 2006

45. Measurement of the Sunyaev-Zel'dovich effect with the SRT

Author: Gervasi, M, Boella, G, Sironi, G, Tartari, A, Zannoni, M, Natale, V, GERVASI, MASSIMO, BOELLA, GIULIANO FILIPPO, SIRONI, GIORGIO, ZANNONI, MARIO, Natale, V., Gervasi, M, Boella, G, Sironi, G, Tartari, A, Zannoni, M, Natale, V, GERVASI, MASSIMO, BOELLA, GIULIANO FILIPPO, SIRONI, GIORGIO, ZANNONI, MARIO, and Natale, V.
Abstract: The Sunyaev-Zel'dovich effect is a powerful probe useful to investigate both the properties of galaxy clusters and cosmological parameters. We are developing low-noise SIS mixer- based receivers for continuum observations at 90 GHz. By using these receivers at the SRT we can investigate galaxy clusters at high redshift, where the typical core \textit{radii} are comparable to the angular resolution of the telescope at 100 GHz. These sources are largely unexplored but their interest will be increasing in the near future due to X-ray observations from satellites.
Published: 2006

46. Master: A radiometer for MM and sub-MM observations from the Antarctic Plateau

Author: Boella, G, Gervasi, M, Passerini, A, Sironi, G, Tartari, A, Zannoni, M, Natale, V, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, PASSERINI, ANDREA, SIRONI, GIORGIO, TARTARI, ANDREA, ZANNONI, MARIO, Natale, V., Boella, G, Gervasi, M, Passerini, A, Sironi, G, Tartari, A, Zannoni, M, Natale, V, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, PASSERINI, ANDREA, SIRONI, GIORGIO, TARTARI, ANDREA, ZANNONI, MARIO, and Natale, V.
Abstract: A radiometer based on SIS mixers for astrophysical observations is being assembled. The system, cooled to cryogenic temperature by a pulse tube refrigerator, is intended for operation on the Antartic Plateau during the local winter, using the mm dishes available there in the futuro. The system prototype will be tested at the focus of the 2.6 m MITO telescope at the Testa Grigia Observatory on the italian Alps, We discuss the system characteristics and the observational programs.
Published: 2005

47. CMB polarimetry from the Antarctic Plateau

Author: Boella, G, DE LUCIA, A, Gervasi, M, Grossetti, G, Passerini, A, Sironi, G, Tartari, A, Zannoni, M, BOELLA, GIULIANO FILIPPO, DE LUCIA, ANTONIO, GERVASI, MASSIMO, GROSSETTI, GIOVANNI FRANCESCO, PASSERINI, ANDREA, SIRONI, GIORGIO, TARTARI, ANDREA, ZANNONI, MARIO, Boella, G, DE LUCIA, A, Gervasi, M, Grossetti, G, Passerini, A, Sironi, G, Tartari, A, Zannoni, M, BOELLA, GIULIANO FILIPPO, DE LUCIA, ANTONIO, GERVASI, MASSIMO, GROSSETTI, GIOVANNI FRANCESCO, PASSERINI, ANDREA, SIRONI, GIORGIO, TARTARI, ANDREA, and ZANNONI, MARIO
Abstract: The Milano Polarimeter (MiPol), a correlation system with phase modulation has been built for the studies of the CMB polarization at large angular scales. At present the system is at the Testa Grigia Observatory on the Italian Alps (3480 m asl). We are ready to bring it to Dome Concordia for observations during the Antarctic winter beginning in March 2006. We discuss the system performance, its sensitivity and the status of the searches for CMB polarization.
Published: 2005

48. BaR-SPOrt: The instrument to be accommodated at Dome C

Author: Zannoni, M, Carretti, E, Cortiglioni, S, Macculi, C, Ramponi, M, Sbarra, C, Ventura, G, Monari, J, Poloni, M, Poppi, S, Natale, V, Nesti, R, Baralis, M, Peverini, O, Tascone, R, Virone, G, Boscaleri, A, Boella, G, Sironi, G, Gervasi, M, De Bernardis, P, Masi, S, De Petris, M, ZANNONI, MARIO, BOELLA, GIULIANO FILIPPO, SIRONI, GIORGIO, GERVASI, MASSIMO, De Petris, M., Zannoni, M, Carretti, E, Cortiglioni, S, Macculi, C, Ramponi, M, Sbarra, C, Ventura, G, Monari, J, Poloni, M, Poppi, S, Natale, V, Nesti, R, Baralis, M, Peverini, O, Tascone, R, Virone, G, Boscaleri, A, Boella, G, Sironi, G, Gervasi, M, De Bernardis, P, Masi, S, De Petris, M, ZANNONI, MARIO, BOELLA, GIULIANO FILIPPO, SIRONI, GIORGIO, GERVASI, MASSIMO, and De Petris, M.
Abstract: The BaR-SPOrt (Balloon-Borne Radiometers for Sky Polarization Observations) experiment, a program of the Agenzia Spaziale Italiana (ASI) co-funded by PNRA (Progetto Nazionale di Ricerca in Antartide) was originally designed as a payload for long duration balloons flights. The changing scenario, both scientific and strategic, has led us to propose it for the starting winter campaign of at the Concordia Base. Here the instrument and the features making it suitable to operate at Dome-C are described. After the initial setup, BaR-SPOrt should not require any kind of routine intervention by a dedicated base staff. The experiment will just need electrical power (less than 2 kW) and a suitable accommodation on the field. It can be fully monitored and controlled, including the data acquisition, through its own telemetry/telecommand link using IRIDIUM modems. Both the receiver and the critical electronics are housed inside a temperature-controlled vacuum chamber, providing the properly stabilized environment. The cold part of the radiometer employs a closed loop mechanical cryo-cooler that provides temperatures < 70 +/- 0.1 K with low power consumption (< 200 W).
Published: 2005

49. CMB observations from the Antarctic Plateau

Author: Engvold, O, Sironi, G, Boella, G, Gervasi, M, Passerini, A, Tartari, A, Zannoni, M, SIRONI, GIORGIO, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, PASSERINI, ANDREA, TARTARI, ANDREA, ZANNONI, MARIO, Engvold, O, Sironi, G, Boella, G, Gervasi, M, Passerini, A, Tartari, A, Zannoni, M, SIRONI, GIORGIO, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, PASSERINI, ANDREA, TARTARI, ANDREA, and ZANNONI, MARIO
Published: 2005

50. The Sky Polarisation Observatory (SPOrt) Program

Author: Carretti, E, Cortiglioni, S, Tucci, M, Cecchini, S, Macculi, C, Orsini, M, Monari, J, Orfei, A, Poppi, S, Bonometto, S, Boella, G, Gervasi, M, Sironi, G, Zannoni, M, Fabbri, R, Nicastro, L, Tascone, R, Pisani, U, Pisani, U., BONOMETTO, SILVIO, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, SIRONI, GIORGIO, ZANNONI, MARIO, Carretti, E, Cortiglioni, S, Tucci, M, Cecchini, S, Macculi, C, Orsini, M, Monari, J, Orfei, A, Poppi, S, Bonometto, S, Boella, G, Gervasi, M, Sironi, G, Zannoni, M, Fabbri, R, Nicastro, L, Tascone, R, Pisani, U, Pisani, U., BONOMETTO, SILVIO, BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, SIRONI, GIORGIO, and ZANNONI, MARIO
Abstract: The main goal of the Sky Polarization Observatory (SPOrt) Program is the measurement of the sky linear polarized emission in the 22-90 GHz frequency range. SPOrt payload will be accommodated on the International Space Station in 2003-2004 for a period of 18 months. The instrument configuration is presented together with most relevant ground activities in support to its realization. In particular, the development of hardware solutions for high sensitive polarimetric measurements, such as those requested by Galactic polarized emission and Cosmic Microwave Background observations, has been addressed by the SPOrt team to match the experiment requirements.
Published: 2005

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