Search

Your search keyword '"Urpo, S."' showing total 189 results
Start Over Author "Urpo, S."
189 results on '"Urpo, S."'

1. Towards the Event Horizon - The Vicinity of AGN at Micro-Arcsecond Resolution

Author

Krichbaum, T. P., Graham, D. A., Alef, W., Kraus, A., Sohn, B. W., Bach, U., Polatidis, A., Witzel, A., Zensus, J. A., Bremer, M., Greve, A., Grewing, M., Doeleman, S., Phillips, R. B., Rogers, A. E. E., Fagg, H., Strittmatter, P., Ziurys, L., Conway, J., Booth, R. S., and Urpo, S.

Subjects
Astrophysics
Abstract

We summarize the present status of VLBI experiments at 3 mm (86 GHz), 2 mm (129-150 GHz) and 1.3 mm (215-230 GHz). We present and discuss a new 3 mm VLBI map of M87 (Virgo A), which has a spatial resolution of only approx. 20 Schwarzschild radii. We discuss recent VLBI results for SgrA* and argue in favor of new observations within an extended European mm-VLBI network, in order to search for variability. We discuss the possibilities to image the `event horizon' of a super-massive black hole at wavelengths < 2mm, and conclude that the addition of large and sensitive millimetre telescopes such as CARMA, the SMA, the LMT and ALMA will be crucial for this., Comment: 4 pages, 2 figures, Proceedings of the 7th European VLBI Network Symposium held in Toledo, Spain on October 12-15, 2004. Editors: R. Bachiller, F. Colomer, J.-F. Desmurs, P. de Vicente

Published
2004

2. A multifrequency analysis of radio variability of blazars

Author

Ciaramella, A., Bongardo, C., Aller, H. D., Aller, M. F., De Zotti, G., Lahteenmaki, A., Longo, G., Milano, L., Tagliaferri, R., Terasranta, H., Tornikoski, M., and Urpo, S.

Subjects
Astrophysics
Abstract

We have carried out a multifrequency analysis of the radio variability of blazars, exploiting the data obtained during the extensive monitoring programs carried out at the University of Michigan Radio Astronomy Observatory (UMRAO, at 4.8, 8, and 14.5 GHz) and at the Metsahovi Radio Observatory (22 and 37 GHz). Two different techniques detect, in the Metsahovi light curves, evidences of periodicity at both frequencies for 5 sources (0224+671, 0945+408, 1226+023, 2200+420, and 2251+158). For the last three sources consistent periods are found also at the three UMRAO frequencies and the Scargle (1982) method yields an extremely low false-alarm probability. On the other hand, the 22 and 37 GHz periodicities of 0224+671 and 0945+408 (which were less extensively monitored at Metsahovi and for which we get a significant false-alarm probability) are not confirmed by the UMRAO database, where some indications of ill-defined periods about a factor of two longer are retrieved. We have also investigated the variability index, the structure function, and the distribution of intensity variations of the most extensively monitored sources. We find a statistically significant difference in the distribution of the variability index for BL Lac objects compared to flat-spectrum radio quasars (FSRQs), in the sense that the former objects are more variable. For both populations the variability index steadily increases with increasing frequency. The distribution of intensity variations also broadens with increasing frequency, and approaches a log-normal shape at the highest frequencies. We find that variability enhances by 20-30% the high frequency counts of extragalactic radio-sources at bright flux densities, such as those of the WMAP and Planck surveys., Comment: A&A accepted. 12 pages, 16 figures

Published
2004
Full Text
View/download PDF

3. VLBI observations at 147 GHz: first detection of transatlantic fringes in bright AGN

Author

Krichbaum, T. P., Graham, D. A., Alef, W., Polatidis, A., Bach, U., Witzel, A., Zensus, J. A., Greve, A., Grewing, M., Doeleman, S., Phillips, R., Rogers, A. E. E., Titus, M., Fagg, H., Strittmatter, P., Wilson, T. L., Ziurys, L., Freund, R., K"on"onen, P., Peltonen, J., Urpo, S., Rantakyro, F., Conway, J., and Booth, R. S.

Subjects
Astrophysics
Abstract

At 147 GHz (2mm wavelength), we detected three prominent AGN (NRAO150, 3C279, 1633+382) with Very Long Baseline Interferometry (VLBI) with an angular resolution of only 18 micro-arcseconds on the baseline between two antennas in Arizona (10m HHT and 12m KittPeak) and the IRAM 30m antenna on Pico Veleta in Spain. This is a new world record in radio interferometry and astronomical imaging and opens fascinating future possibilities to directly image and study the innermost regions in Quasars and other Active Galactic Nuclei., Comment: 4 pages, 3 figures, appears in: Proceedings of the 6th European VLBI Network Symposium held on June 25th-28th in Bonn, Germany. Edited by: E. Ros, R.W. Porcas, A.P. Lobanov, and J.A. Zensus

Published
2002

6. Microwave flare characteristics in 8 and 3 mm Metsähovi measurements compared with optical and H-alpha data

Author

Pohjolainen, S., Urpo, S., Teräsranta, H., Tornikoski, M., Araki, H., editor, Breézin, E., editor, Ehlers, J., editor, Frisch, U., editor, Hepp, K., editor, Jaffe, R. L., editor, Kippenhahn, R., editor, Weidenmüller, H. A., editor, Wess, J., editor, Zittartz, J., editor, Beiglböck, W., editor, Švestka, Zdeněk, editor, Jackson, Bernard V., editor, and Machado, Marcos E., editor

Published
1992
Full Text
View/download PDF

7. “RadioAstron”-A telescope with a size of 300 000 km: Main parameters and first observational results

Author

Kardashev, N. S., Khartov, V. V., Abramov, V. V., Avdeev, V. Yu., Alakoz, A. V., Aleksandrov, Yu. A., Ananthakrishnan, S., Andreyanov, V. V., Andrianov, A. S., Antonov, N. M., Artyukhov, M. I., Arkhipov, M. Yu., Baan, W., Babakin, N. G., Babyshkin, V. E., Bartel’, N., Belousov, K. G., Belyaev, A. A., Berulis, J. J., Burke, B. F., Biryukov, A. V., Bubnov, A. E., Burgin, M. S., Busca, G., Bykadorov, A. A., Bychkova, V. S., Vasil’kov, V. I., Wellington, K. J., Vinogradov, I. S., Wietfeldt, R., Voitsik, P. A., Gvamichava, A. S., Girin, I. A., Gurvits, L. I., Dagkesamanskii, R. D., D’Addario, L., Giovannini, G., Jauncey, D. L., Dewdney, P. E., D’yakov, A. A., Zharov, V. E., Zhuravlev, V. I., Zaslavskii, G. S., Zakhvatkin, M. V., Zinov’ev, A. N., Ilinen, Yu., Ipatov, A. V., Kanevskii, B. Z., Knorin, I. A., Casse, J. L., Kellermann, K. I., Kovalev, Yu. A., Kovalev, Yu. Yu., Kovalenko, A. V., Kogan, B. L., Komaev, R. V., Konovalenko, A. A., Kopelyanskii, G. D., Korneev, Yu. A., Kostenko, V. I., Kotik, A. N., Kreisman, B. B., Kukushkin, A. Yu., Kulishenko, V. F., Cooper, D. N., Kut’kin, A. M., Cannon, W. H., Larionov, M. G., Lisakov, M. M., Litvinenko, L. N., Likhachev, S. F., Likhacheva, L. N., Lobanov, A. P., Logvinenko, S. V., Langston, G., McCracken, K., Medvedev, S. Yu., Melekhin, M. V., Menderov, A. V., Murphy, D. W., Mizyakina, T. A., Mozgovoi, Yu. V., Nikolaev, N. Ya., Novikov, B. S., Novikov, I. D., Oreshko, V. V., Pavlenko, Yu. K., Pashchenko, I. N., Ponomarev, Yu. N., Popov, M. V., Pravin-Kumar, A., Preston, R. A., Pyshnov, V. N., Rakhimov, I. A., Rozhkov, V. M., Romney, J. D., Rocha, P., Rudakov, V. A., Räisänen, A., Sazankov, S. V., Sakharov, B. A., Semenov, S. K., Serebrennikov, V. A., Schilizzi, R. T., Skulachev, D. P., Slysh, V. I., Smirnov, A. I., Smith, J. G., Soglasnov, V. A., Sokolovskii, K. V., Sondaar, L. H., Stepan’yants, V. A., Turygin, M. S., Turygin, S. Yu., Tuchin, A. G., Urpo, S., Fedorchuk, S. D., Finkel’shtein, A. M., Fomalont, E. B., Fejes, I., Fomina, A. N., Khapin, Yu. B., Tsarevskii, G. S., Zensus, J. A., Chuprikov, A. A., Shatskaya, M. V., Shapirovskaya, N. Ya., Sheikhet, A. I., Shirshakov, A. E., Schmidt, A., Shnyreva, L. A., Shpilevskii, V. V., Ekers, R. D., and Yakimov, V. E.

Published
2013
Full Text
View/download PDF

16. 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., Ao, L., Arefiev, A., Azzarello, P., Babucci, E., Baldini, L., Basile, M., Barancourt, D., Barao, F., Barbier, G., Barreira, G., Battiston, R., Becker, R., Becker, U., Bellagamba, L., Béné, P., Berdugo, J., Berges, P., Bertucci, B., Biland, A., Bizzaglia, S., Blasko, S., Boella, G., Boschini, M., Bourquin, M., Brocco, L., Bruni, G., Buénerd, M., Burger, J.D., Burger, W.J., Cai, X.D., Camps, C., Cannarsa, P., Capell, M., Carosi, G., Casadei, D., Casaus, J., Castellini, G., Cecchi, C., Chang, Y.H., Chen, H.F., Chen, H.S., Chen, Z.G., Chernoplekov, N.A., Chiueh, T.H., Cho, K., Choi, M.J., Choi, Y.Y., Chuang, Y.L., Cindolo, F., Commichau, V., Contin, A., Cortina-Gil, E., Cristinziani, M., da Cunha, J.P., Dai, T.S., Delgado, C., Demirköz, B., Deus, J.D., Dinu, N., Djambazov, L., D’Antone, I., Dong, Z.R., Emonet, P., Engelberg, J., Eppling, F.J., Eronen, T., Esposito, G., Extermann, P., Favier, J., Fiandrini, E., Fisher, P.H., Fluegge, G., Fouque, N., Galaktionov, Yu., Gervasi, M., Giusti, P., Grandi, D., Grimm, O., Gu, W.Q., Hangarter, K., Hasan, A., Henning, R., Hermel, V., Hofer, H., Huang, M.A., Hungerford, W., Ionica, M., Ionica, R., Jongmanns, M., Karlamaa, K., Karpinski, W., Kenney, G., Kenny, J., Kim, D.H., Kim, G.N., Kim, K.S., Kim, M.Y., Klimentov, A., Kossakowski, R., Koutsenko, V., Kraeber, M., Laborie, G., Laitinen, T., Lamanna, G., Lanciotti, E., Laurenti, G., Lebedev, A., Lechanoine-Leluc, C., Lee, M.W., Lee, S.C., Levi, G., Levtchenko, P., Liu, C.L., Liu, H.T., Lopes, I., Lu, G., Lu, Y.S., Lübelsmeyer, K., Luckey, D., Lustermann, W., Maña, C., Margotti, A., Mayet, F., McNeil, R.R., Meillon, B., Menichelli, M., Mihul, A., Monreal, B., Mourao, A., Mujunen, A., Palmonari, F., Papi, A., Park, H.B., Park, W.H., Pauluzzi, M., Pauss, F., Perrin, E., Pesci, A., Pevsner, A., Pimenta, M., Plyaskin, V., Pojidaev, V., Pohl, M., Postolache, V., Produit, N., Rancoita, P.G., Rapin, D., Raupach, F., Ren, D., Ren, Z., Ribordy, M., Richeux, J.P., Riihonen, E., Ritakari, J., Ro, S., Roeser, U., Rossin, C., Sagdeev, R., Santos, D., Sartorelli, G., Sbarra, C., Schael, S., Schultz von Dratzig, A., Schwering, G., Scolieri, G., Seo, E.S., Shin, J.W., Shoumilov, E., Shoutko, V., Siedling, R., Son, D., Song, T., Steuer, M., Sun, G.S., Suter, H., Tang, X.W., Ting, Samuel C.C., Ting, S.M., Tornikoski, M., Torsti, J., Trümper, J., Ulbricht, J., Urpo, S., Valtonen, E., Vandenhirtz, J., Velcea, F., Velikhov, E., Verlaat, B., Vetlitsky, I., Vezzu, F., Vialle, J.P., Viertel, G., Vité, D., Von Gunten, H., Waldmeier Wicki, S., Wallraff, W., Wang, B.C., Wang, J.Z., Wang, Y.H., Wiik, K., Williams, C., Wu, S.X., Xia, P.C., Yan, J.L., Yan, L.G., Yang, C.G., Yang, J., Yang, M., Ye, S.W., Yeh, P., Xu, Z.Z., Zhang, H.Y., Zhang, Z.P., Zhao, D.X., Zhu, G.Y., Zhu, W.Z., Zhuang, H.L., Zichichi, A., Zimmermann, B., and Zuccon, P.

Published
2005
Full Text
View/download PDF

26. The Alpha Magnetic Spectrometer (AMS)

Author

Alcaraz, J., Alpat, B., Ambrosi, G., Anderhub, H., Ao, L., Arefiev, A., Azzarello, P., Babucci, E., Baldini, L., Basile, M., Barancourt, D., Barao, F., Barbier, G., Barreira, G., Battiston, R., Becker, R., Becker, U., Bellagamba, L., Bene, P., Berdugo, J., Berges, P., Bertucci, B., Biland, A., Bizzaglia, S., Blasko, S., Boella, G., Boschini, M., Bourquin, M., Brocco, L., Bruni, G., Buenerd, M., Burger, J.D., Burger, W.J., Cai, X.D., Camps, C., Cannarsa, P., Capell, M., Casadei, D., Casaus, J., Castellini, G., Cecchi, C., Chang, Y.H., Chen, H.F., Chen, H.S., Chen, Z.G., Chernoplekov, N.A., Chiueh, T.H., Chuang, Y.L., Cindolo, F., Commichau, V., Contin, A., Crespo, P., Cristinziani, M., da Cunha, J.P., Dai, T.S., Deus, J.D., Dinu, N., Djambazov, L., DAntone, I., Dong, Z.R., Emonet, P., Engelberg, J., Eppling, F.J., Eronen, T., Esposito, G., Extermann, P., Favier, J., Fiandrini, E., Fisher, P.H., Fluegge, G., Fouque, N., Galaktionov, Yu., Gervasi, M., Giusti, P., Grandi, D., Grimm, O., Gu, W.Q., Hangarter, K., Hasan, A., Hermel, V., Hofer, H., Huang, M.A., Hungerford, W., Ionica, M., Ionica, R., Jongmanns, M., Karlamaa, K., Karpinski, W., Kenney, G., Kenny, J., Kim, W., Klimentov, A., Kossakowski, R., Koutsenko, V., Kraeber, M., Laborie, G., Laitinen, T., Lamanna, G., Laurenti, G., Lebedev, A., Lee, S.C., Levi, G., Levtchenko, P., Liu, C.L., Liu, H.T., Lopes, I., Lu, G., Lu, Y.S., Lübelsmeyer, K., Luckey, D., Lustermann, W., Maña, C., Margotti, A., Mayet, F., McNeil, R.R., Meillon, B., Menichelli, M., Mihul, A., Mourao, A., Mujunen, A., Palmonari, F., Papi, A., Park, I.H., Pauluzzi, M., Pauss, F., Perrin, E., Pesci, A., Pevsner, A., Pimenta, M., Plyaskin, V., Pojidaev, V., Postolache, V., Produit, N., Rancoita, P.G., Rapin, D., Raupach, F., Ren, D., Ren, Z., Ribordy, M., Richeux, J.P., Riihonen, E., Ritakari, J., Roeser, U., Roissin, C., Sagdeev, R., Sartorelli, G., Schultz von Dratzig, A., Schwering, G., Scolieri, G., Seo, E.S., Shoutko, V., Shoumilov, E., Siedling, R., Son, D., Song, T., Steuer, M., Sun, G.S., Suter, H., Tang, X.W., Ting, Samuel C.C., Ting, S.M., Tornikoski, M., Torsti, J., Tr umper, J., Ulbricht, J., Urpo, S., Usoskin, I., Valtonen, E., Vandenhirtz, J., Velcea, F., Velikhov, E., Verlaat, B., Vetlitsky, I., Vezzu, F., Vialle, J.P., Viertel, G., Vite, D., Gunten, H.Von, Wicki, S.Waldmeier, Wallraff, W., Wang, B.C., Wang, J.Z., Wang, Y.H., Wiik, K., Williams, C., Wu, S.X., Xia, P.C., Yan, J.L., Yan, L.G., Yang, C.G., Yang, M., Ye, S.W., Yeh, P., Xu, Z.Z., Zhang, H.Y., Zhang, Z.P., Zhao, D.X., Zhu, G.Y., Zhu, W.Z., Zhuang, H.L., Zichichi, A., and Zimmermann, B.

Published
2002
Full Text
View/download PDF

28. OJ287 as a binary system

Author

Valtonen, M., Sillanpää, A., Haarala, S., Valtaoja, L., Valtaoja, E., Sundelius, B., Byrd, G. G., Teräsranta, H., Urpo, S., Araki, H., editor, Ehlers, J., editor, Hepp, K., editor, Kippenhahn, R., editor, Weidenmüller, H. A., editor, Wess, J., editor, Zittartz, J., editor, Beiglböck, W., editor, Miller, H. Richard, editor, and Wiita, Paul J., editor

Published
1988
Full Text
View/download PDF

29. Towards the Event Horizon - The Vicinity of AGN at Micro-Arcsecond Resolution

Author

Krichbaum, TP, Graham, DA, Alef, W, Kraus, A, Sohn, BW, Bach, U, Polatidis, A, Witzel, A, Zensus, JA, Bremer, M, Greve, A, Grewing, M, Doeleman, S, Phillips, RB, Rogers, AEE, Fagg, H, Strittmatter, P, Ziurys, L, Conway, J, Booth, RS, and Urpo, S

Subjects
Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics
Abstract

We summarize the present status of VLBI experiments at 3 mm (86 GHz), 2 mm (129-150 GHz) and 1.3 mm (215-230 GHz). We present and discuss a new 3 mm VLBI map of M87 (Virgo A), which has a spatial resolution of only approx. 20 Schwarzschild radii. We discuss recent VLBI results for SgrA* and argue in favor of new observations within an extended European mm-VLBI network, in order to search for variability. We discuss the possibilities to image the `event horizon' of a super-massive black hole at wavelengths < 2mm, and conclude that the addition of large and sensitive millimetre telescopes such as CARMA, the SMA, the LMT and ALMA will be crucial for this., 4 pages, 2 figures, Proceedings of the 7th European VLBI Network Symposium held in Toledo, Spain on October 12-15, 2004. Editors: R. Bachiller, F. Colomer, J.-F. Desmurs, P. de Vicente

Published
2016

32. The Alpha Magnetic Spectrometer (AMS)

Author

Alcaraz, J., Alpat, B., Ambrosi, G., Anderhub, H., Ao, L., Arefiev, A., Azzarello, P., Babucci, E., Luca Baldini, Basile, M., Barancourt, D., Barao, F., Barbier, G., Barreira, G., Battiston, R., Becker, R., Becker, U., Bellagamba, L., Bene, P., Berdugo, J., Berges, P., Bertucci, B., Biland, A., Bizzaglia, S., Blasko, S., Boella, G., Boschini, M., Bourquin, M., Brocco, L., Bruni, G., Buenerd, M., Burger, J. D., Burger, W. J., Cai, X. D., Camps, C., Cannarsa, P., Capell, M., Casadei, D., Casaus, J., Castellini, G., Cecchi, C., Chang, Y. H., Chen, H. F., Chen, H. S., Chen, Z. G., Chernoplekov, N. A., Chiueh, T. H., Chuang, Y. L., Cindolo, F., Commichau, V., Contin, A., Crespo, P., Cristinziani, M., Da Cunha, J. P., Dai, T. S., Deus, J. D., Dinu, N., Djambazov, L., Antone, I. D., Dong, Z. R., Emonet, P., Engelberg, J., Eppling, F. J., Eronen, T., Esposito, G., Extermann, P., Favier, J., Fiandrini, E., Fisher, P. H., Fluegge, G., Fouque, N., Yu. Galaktionov, Gervasi, M., Giusti, P., Grandi, D., Grimm, O., Gu, W. Q., Hangarter, K., Hasan, A., Hermel, V., Hofer, H., Huang, M. A., Hungerford, W., Ionica, M., Ionica, R., Jongmanns, M., Karlamaa, K., Karpinski, W., Kenney, G., Kenny, J., Kim, W., Klimentov, A., Kossakowski, R., Koutsenko, V., Kraber, M., Laborie, G., Laitinen, T., Giovanni Lamanna, Laurenti, G., Lebedev, A., Lee, S. C., Levi, G., Levtchenko, P., Liu, C. L., Liu, H. T., Lopes, I., Lu, G., Lu, Y. S., Luebelsmeyer, K., Luckey, D., Lustermann, W., Mana, C., Margotti, A., Mayet, F., Mcneil, R. R., Meillon, B., Menichelli, M., Mihul, A., Mourao, A., Mujunen, A., Palmonari, F., Papi, A., Park, I. H., Pauluzzi, M., Pauss, F., Perrin, E., Pesci, A., Pevsner, A., Pimenta, M., Plyaskin, V., Pozhidaev, V., Postolache, V., Produit, N., Rancoita, P. G., Rapin, D., Raupach, F., Ren, D., Zhuoxiang Ren, Ribordy, M., Richeux, J. P., Riihonen, E., Ritakari, J., Roser, U., Rossin, C., Sagdeev, R., Sartorelli, G., Schultz Dratzig, A., Schwering, G., Scolieri, G., Seo, E. S., Shoutko, V., Shumilov, E., Siedling, R., Son, D., Song, T., Steuer, M., Sun, G. S., Suter, H., Tang, X. W., Ting, S. C. C., Ting, S. M., Tornikoski, M., Torsti, J., Trumper, J., Ulbricht, J., Urpo, S., Usoskin, I., Valtonen, E., Vandenhirtz, J., Velcea, F., Velikhov, E., Verlaat, B., Vetlitsky, I., Vezzu, F., Vialle, J. P., Viertel, G., Vite, D., Gunten, H., Waldmeier Wicki, S., Wallraff, W., Wang, B. C., Wang, J. Z., Wang, Y. H., Wiik, K., Williams, C., Wu, S. X., Xia, P. C., Yan, J. L., Yan, L. G., Yang, C. G., Yang, M., Ye, S. W., Yeh, P., Xu, Z. Z., Zhang, H. Y., Zhang, Z. P., Zhao, D. X., Zhu, G. Y., Zhu, W. Z., Zhuang, H. L., Zichichi, A., Zimmermann, B., 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, Alcaraz, J, Alpat, B, Ambrosi, G, Anderhub, H, Ao, L, Arefiev, A, Azzarello, P, Babucci, E, Baldini, L, Basile, M, Barancourt, D, Barao, F, Barbier, G, Barreira, G, Battiston, R, Becker, R, Becker, U, Bellagamba, L, Bene, P, Berdugo, J, Berges, P, Bertucci, B, Biland, A, Bizzaglia, S, Blasko, S, Boella, G, Boschini, M, Bourquin, M, Brocco, L, Bruni, G, Buenerd, M, Burger, J, Burger, W, Cai, X, Camps, C, Cannarsa, P, Capell, M, Casadei, D, Casaus, J, Castellini, G, Cecchi, C, Chang, Y, Chen, H, Chen, Z, Chernoplekov, N, Chiueh, T, Chuang, Y, Cindolo, F, Commichau, V, Contin, A, Crespo, P, Cristinziani, M, da Cunha, J, Dai, T, Deus, J, Dinu, N, Djambazov, L, Dantone, I, Dong, Z, Emonet, P, Engelberg, J, Eppling, F, Eronen, T, Esposito, G, Extermann, P, Favier, J, Fiandrini, E, Fisher, P, Fluegge, G, Fouque, N, Galaktionov, Y, Gervasi, M, Giusti, P, Grandi, D, Grimm, O, Gu, W, Hangarter, K, Hasan, A, Hermel, V, Hofer, H, Huang, M, Hungerford, W, Ionica, M, Ionica, R, Jongmanns, M, Karlamaa, K, Karpinski, W, Kenney, G, Kenny, J, Kim, W, Klimentov, A, Kossakowski, R, Koutsenko, V, Kraeber, M, Laborie, G, Laitinen, T, Lamanna, G, Laurenti, G, Lebedev, A, Lee, S, Levi, G, Levtchenko, P, Liu, C, Liu, H, Lopes, I, Lu, G, Lu, Y, Lubelsmeyer, K, Luckey, D, Lustermann, W, Mana, C, Margotti, A, Mayet, F, Mcneil, R, Meillon, B, Menichelli, M, Mihul, A, Mourao, A, Mujunen, A, Palmonari, F, Papi, A, Park, I, Pauluzzi, M, Pauss, F, Perrin, E, Pesci, A, Pevsner, A, Pimenta, M, Plyaskin, V, Pojidaev, V, Postolache, V, Produit, N, Rancoita, P, Rapin, D, Raupach, F, Ren, D, Ren, Z, Ribordy, M, Richeux, J, Riihonen, E, Ritakari, J, Roeser, U, Roissin, C, Sagdeev, R, Sartorelli, G, von Dratzig, A, Schwering, G, Scolieri, G, Seo, E, Shoutko, V, Shoumilov, E, Siedling, R, Son, D, Song, T, Steuer, M, Sun, G, Suter, H, Tang, X, Ting, S, Tornikoski, M, Torsti, J, Trumper, J, Ulbricht, J, Urpo, S, Usoskin, I, Valtonen, E, Vandenhirtz, J, Velcea, F, Velikhov, E, Verlaat, B, Vetlitsky, I, Vezzu, F, Vialle, J, Viertel, G, Vite, D, Von Gunten, H, Wicki, S, Wallraff, W, Wang, B, Wang, J, Wang, Y, Wiik, K, Williams, C, Wu, S, Xia, P, Yan, J, Yan, L, Yang, C, Yang, M, Ye, S, Yeh, P, Xu, Z, Zhang, H, Zhang, Z, Zhao, D, Zhu, G, Zhu, W, Zhuang, H, Zichichi, A, and Zimmermann, B

Subjects
Physics, Nuclear and High Energy Physics, Spectrometer, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Dark matter, Cosmic ray, 01 natural sciences, Particle detector, Nuclear physics, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Physics::Popular Physics, FIS/05 - ASTRONOMIA E ASTROFISICA, FIS/01 - FISICA SPERIMENTALE, Antimatter, 0103 physical sciences, International Space Station, Alpha Magnetic Spectrometer, Measuring instrument, space-research instrumentation, 010306 general physics, Instrumentation, FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
Abstract

The Alpha Magnetic Spectrometer (AMS) is a large acceptance (0.65 sr m(2)) detector designed to operate in the International Space Station (ISS) for three years. The purposes of the experiment are to search for cosmic antimatter and dark matter and to study the composition and energy spectrum of the primary cosmic rays. A "scated-down" version has been flown on the Space Shuttle Discovery for 10 days in June 1998. The complete AMS is programmed for installation on the ISS in October 2003 for an operational period of 3 yr. This contribution reports on the experimental configuration that will be installed on the ISS. (C) 2002 Elsevier Science B.V. All rights reserved.

Published
2001

35. OJ287 as a binary system

Author

Valtonen, M., primary, Sillanpää, A., additional, Haarala, S., additional, Valtaoja, L., additional, Valtaoja, E., additional, Sundelius, B., additional, Byrd, G. G., additional, Teräsranta, H., additional, and Urpo, S., additional

Full Text
View/download PDF

37. 'RadioAstron'-A telescope with a size of 300 000 km: Main parameters and first observational results

Author

Kardashev, N., Khartov, V., Abramov, V., Avdeev, V., Alakoz, A., Aleksandrov, Y., Ananthakrishnan, S., Andreyanov, V., Andrianov, A., Antonov, N., Artyukhov, M., Arkhipov, M., Baan, W., Babakin, N., Babyshkin, V., Bartel', N., Belousov, K., Belyaev, A., Berulis, J., Burke, B., Biryukov, A., Bubnov, A., Burgin, M., Busca, G., Bykadorov, A., Bychkova, V., Vasil'kov, V., Wellington, K., Vinogradov, I., Wietfeldt, R., Voitsik, P., Gvamichava, A., Girin, I., Gurvits, L., Dagkesamanskii, R., D'Addario, L., Giovannini, G., Jauncey, D., Dewdney, P., D'yakov, A., Zharov, V., Zhuravlev, V., Zaslavskii, G., Zakhvatkin, M., Zinov'ev, A., Ilinen, Y., Ipatov, A., Kanevskii, B., Knorin, I., Casse, J., Kellermann, K., Kovalev, Y., Kovalenko, A., Kogan, B., Komaev, R., Konovalenko, A., Kopelyanskii, G., Korneev, Y., Kostenko, V., Kotik, A., Kreisman, B., Kukushkin, A., Kulishenko, V., Cooper, D., Kut'kin, A., Cannon, W., Larionov, M., Lisakov, M., Litvinenko, L., Likhachev, S., Likhacheva, L., Lobanov, A., Logvinenko, S., Langston, G., McCracken, K., Medvedev, S., Melekhin, M., Menderov, A., Murphy, D., Mizyakina, T., Mozgovoi, Y., Nikolaev, N., Novikov, B., Novikov, I., Oreshko, V., Pavlenko, Y., Pashchenko, I., Ponomarev, Y., Popov, M., Pravin-Kumar, A., Preston, R., Pyshnov, V., Rakhimov, I., Rozhkov, V., Romney, J., Rocha, P., Rudakov, V., Raisanen, A., Sazankov, S., Sakharov, B., Semenov, S., Serebrennikov, V., Schilizzi, R., Skulachev, D., Slysh, V., Smirnov, A., Smith, J., Soglasnov, V., Sokolovskii, K., Sondaar, L., Stepan'yants, V., Turygin, M., Turygin, S., Tuchin, A., Urpo, S., Fedorchuk, S., Finkel'shtein, A., Fomalont, E., Fejes, I., Fomina, A., Khapin, Y., Tsarevskii, G., Zensus, J., Chuprikov, A., Shatskaya, M., Shapirovskaya, N., Sheikhet, A., Shirshakov, A., Schmidt, A., Shnyreva, L., Shpilevskii, V., Ekers, Ronald, Yakimov, V., Kardashev, N., Khartov, V., Abramov, V., Avdeev, V., Alakoz, A., Aleksandrov, Y., Ananthakrishnan, S., Andreyanov, V., Andrianov, A., Antonov, N., Artyukhov, M., Arkhipov, M., Baan, W., Babakin, N., Babyshkin, V., Bartel', N., Belousov, K., Belyaev, A., Berulis, J., Burke, B., Biryukov, A., Bubnov, A., Burgin, M., Busca, G., Bykadorov, A., Bychkova, V., Vasil'kov, V., Wellington, K., Vinogradov, I., Wietfeldt, R., Voitsik, P., Gvamichava, A., Girin, I., Gurvits, L., Dagkesamanskii, R., D'Addario, L., Giovannini, G., Jauncey, D., Dewdney, P., D'yakov, A., Zharov, V., Zhuravlev, V., Zaslavskii, G., Zakhvatkin, M., Zinov'ev, A., Ilinen, Y., Ipatov, A., Kanevskii, B., Knorin, I., Casse, J., Kellermann, K., Kovalev, Y., Kovalenko, A., Kogan, B., Komaev, R., Konovalenko, A., Kopelyanskii, G., Korneev, Y., Kostenko, V., Kotik, A., Kreisman, B., Kukushkin, A., Kulishenko, V., Cooper, D., Kut'kin, A., Cannon, W., Larionov, M., Lisakov, M., Litvinenko, L., Likhachev, S., Likhacheva, L., Lobanov, A., Logvinenko, S., Langston, G., McCracken, K., Medvedev, S., Melekhin, M., Menderov, A., Murphy, D., Mizyakina, T., Mozgovoi, Y., Nikolaev, N., Novikov, B., Novikov, I., Oreshko, V., Pavlenko, Y., Pashchenko, I., Ponomarev, Y., Popov, M., Pravin-Kumar, A., Preston, R., Pyshnov, V., Rakhimov, I., Rozhkov, V., Romney, J., Rocha, P., Rudakov, V., Raisanen, A., Sazankov, S., Sakharov, B., Semenov, S., Serebrennikov, V., Schilizzi, R., Skulachev, D., Slysh, V., Smirnov, A., Smith, J., Soglasnov, V., Sokolovskii, K., Sondaar, L., Stepan'yants, V., Turygin, M., Turygin, S., Tuchin, A., Urpo, S., Fedorchuk, S., Finkel'shtein, A., Fomalont, E., Fejes, I., Fomina, A., Khapin, Y., Tsarevskii, G., Zensus, J., Chuprikov, A., Shatskaya, M., Shapirovskaya, N., Sheikhet, A., Shirshakov, A., Schmidt, A., Shnyreva, L., Shpilevskii, V., Ekers, Ronald, and Yakimov, V.

Abstract

The Russian Academy of Sciences and Federal Space Agency, together with the participation of many international organizations, worked toward the launch of the RadioAstron orbiting space observatory with its onboard 10-m reflector radio telescope from the Baikonur cosmodrome on July 18, 2011. Together with some of the largest ground-based radio telescopes and a set of stations for tracking, collecting, and reducing the data obtained, this space radio telescope forms a multi-antenna ground-space radio interferometer with extremely long baselines, making it possible for the first time to study various objects in the Universe with angular resolutions a million times better than is possible with the human eye. The project is targeted at systematic studies of compact radio-emitting sources and their dynamics. Objects to be studied include supermassive black holes, accretion disks, and relativistic jets in active galactic nuclei, stellar-mass black holes, neutron stars and hypothetical quark stars, regions of formation of stars and planetary systems in our and other galaxies, interplanetary and interstellar plasma, and the gravitational field of the Earth. The results of ground-based and inflight tests of the space radio telescope carried out in both autonomous and ground-space interferometric regimes are reported. The derived characteristics are in agreement with the main requirements of the project. The astrophysical science program has begun. © 2013 Pleiades Publishing, Ltd.

Published
2013

39. 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

40. 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

44. ISOTOPIC COMPOSITION OF LIGHT NUCLEI IN COSMIC RAYS: RESULTS FROM AMS-01

Author

Aguilar, M., primary, Alcaraz, J., additional, Allaby, J., additional, Alpat, B., additional, Ambrosi, G., additional, Anderhub, H., additional, Ao, L., additional, Arefiev, A., additional, Arruda, L., additional, Azzarello, P., additional, Basile, M., additional, Barao, F., additional, Barreira, G., additional, Bartoloni, A., additional, Battiston, R., additional, Becker, R., additional, Becker, U., additional, Bellagamba, L., additional, Berdugo, J., additional, Berges, P., additional, Bertucci, B., additional, Biland, A., additional, Bindi, V., additional, Boella, G., additional, Boschini, M., additional, Bourquin, M., additional, Bruni, G., additional, Buénerd, M., additional, Burger, J. D., additional, Burger, W. J., additional, Cai, X. D., additional, Cannarsa, P., additional, Capell, M., additional, Casadei, D., additional, Casaus, J., additional, Castellini, G., additional, Cernuda, I., additional, Chang, Y. H., additional, Chen, H. F., additional, Chen, H. S., additional, Chen, Z. G., additional, Chernoplekov, N. A., additional, Chiueh, T. H., additional, Choi, Y. Y., additional, Cindolo, F., additional, Commichau, V., additional, Contin, A., additional, Cortina-Gil, E., additional, Crespo, D., additional, Cristinziani, M., additional, Dai, T. S., additional, dela Guia, C., additional, Delgado, C., additional, Di Falco, S., additional, Djambazov, L., additional, D’Antone, I., additional, Dong, Z. R., additional, Duranti, M., additional, Engelberg, J., additional, Eppling, F. J., additional, Eronen, T., additional, Extermann, P., additional, Favier, J., additional, Fiandrini, E., additional, Fisher, P. H., additional, Flügge, G., additional, Fouque, N., additional, Galaktionov, Y., additional, Gervasi, M., additional, Giovacchini, F., additional, Giusti, P., additional, Grandi, D., additional, Grimm, O., additional, Gu, W. Q., additional, Haino, S., additional, Hangarter, K., additional, Hasan, A., additional, Hermel, V., additional, Hofer, H., additional, Hungerford, W., additional, Ionica, M., additional, Jongmanns, M., additional, Karlamaa, K., additional, Karpinski, W., additional, Kenney, G., additional, Kim, D. H., additional, Kim, G. N., additional, Kim, K. S., additional, Kirn, T., additional, Klimentov, A., additional, Kossakowski, R., additional, Kounine, A., additional, Koutsenko, V., additional, Kraeber, M., additional, Laborie, G., additional, Laitinen, T., additional, Lamanna, G., additional, Laurenti, G., additional, Lebedev, A., additional, Lechanoine-Leluc, C., additional, Lee, M. W., additional, Lee, S. C., additional, Levi, G., additional, Lin, C. H., additional, Liu, H. T., additional, Lu, G., additional, Lu, Y. S., additional, Lübelsmeyer, K., additional, Luckey, D., additional, Lustermann, W., additional, Maña, C., additional, Margotti, A., additional, Mayet, F., additional, McNeil, R. R., additional, Menichelli, M., additional, Mihul, A., additional, Mujunen, A., additional, Natale, S., additional, Oliva, A., additional, Palmonari, F., additional, Paniccia, M., additional, Park, H. B., additional, Park, W. H., additional, Pauluzzi, M., additional, Pauss, F., additional, Pereira, R., additional, Perrin, E., additional, Pevsner, A., additional, Pilo, F., additional, Pimenta, M., additional, Plyaskin, V., additional, Pojidaev, V., additional, Pohl, M., additional, Produit, N., additional, Quadrani, L., additional, Rancoita, P. G., additional, Rapin, D., additional, Ren, D., additional, Ren, Z., additional, Ribordy, M., additional, Riihonen, E., additional, Ritakari, J., additional, Ro, S., additional, Roeser, U., additional, Sagdeev, R., additional, Santos, D., additional, Sartorelli, G., additional, Saouter, P., additional, Sbarra, C., additional, Schael, S., additional, von Dratzig, A. Schultz, additional, Schwering, G., additional, Seo, E. S., additional, Shin, J. W., additional, Shoumilov, E., additional, Shoutko, V., additional, Siedenburg, T., additional, Siedling, R., additional, Son, D., additional, Song, T., additional, Spada, F. R., additional, Spinella, F., additional, Steuer, M., additional, Sun, G. S., additional, Suter, H., additional, Tang, X. W., additional, Ting, Samuel C. C., additional, Ting, S. M., additional, Tomassetti, N., additional, Tornikoski, M., additional, Torsti, J., additional, Trümper, J., additional, Ulbricht, J., additional, Urpo, S., additional, Valtonen, E., additional, Vandenhirtz, J., additional, Velikhov, E., additional, Verlaat, B., additional, Vetlitsky, I., additional, Vezzu, F., additional, Vialle, J. P., additional, Viertel, G., additional, Vité, D., additional, Von Gunten, H., additional, Wicki, S. Waldmeier, additional, Wallraff, W., additional, Wang, J. Z., additional, Wiik, K., additional, Williams, C., additional, Wu, S. X., additional, Xia, P. C., additional, Xu, S., additional, Xu, Z. Z., additional, Yan, J. L., additional, Yan, L. G., additional, Yang, C. G., additional, Yang, J., additional, Yang, M., additional, Ye, S. W., additional, Zhang, H. Y., additional, Zhang, Z. P., additional, Zhao, D. X., additional, Zhou, F., additional, Zhou, Y., additional, Zhu, G. Y., additional, Zhu, W. Z., additional, Zhuang, H. L., additional, Zichichi, A., additional, Zimmermann, B., additional, and Zuccon, P., additional

Published
2011
Full Text
View/download PDF

46. RELATIVE COMPOSITION AND ENERGY SPECTRA OF LIGHT NUCLEI IN COSMIC RAYS: RESULTS FROM AMS-01

Author

Aguilar, M., primary, Alcaraz, J., additional, Allaby, J., additional, Alpat, B., additional, Ambrosi, G., additional, Anderhub, H., additional, Ao, L., additional, Arefiev, A., additional, Arruda, L., additional, Azzarello, P., additional, Basile, M., additional, Barao, F., additional, Barreira, G., additional, Bartoloni, A., additional, Battiston, R., additional, Becker, R., additional, Becker, U., additional, Bellagamba, L., additional, Béné, P., additional, Berdugo, J., additional, Berges, P., additional, Bertucci, B., additional, Biland, A., additional, Bindi, V., additional, Boella, G., additional, Boschini, M., additional, Bourquin, M., additional, Bruni, G., additional, Buénerd, M., additional, Burger, J. D., additional, Burger, W. J., additional, Cai, X. D., additional, Cannarsa, P., additional, Capell, M., additional, Casadei, D., additional, Casaus, J., additional, Castellini, G., additional, Cernuda, I., additional, Chang, Y. H., additional, Chen, H. F., additional, Chen, H. S., additional, Chen, Z. G., additional, Chernoplekov, N. A., additional, Chiueh, T. H., additional, Choi, Y. Y., additional, Cindolo, F., additional, Commichau, V., additional, Contin, A., additional, Cortina-Gil, E., additional, Crespo, D., additional, Cristinziani, M., additional, Dai, T. S., additional, dela Guia, C., additional, Delgado, C., additional, Falco, S. Di, additional, Djambazov, L., additional, D'Antone, I., additional, Dong, Z. R., additional, Duranti, M., additional, Engelberg, J., additional, Eppling, F. J., additional, Eronen, T., additional, Extermann, P., additional, Favier, J., additional, Fiandrini, E., additional, Fisher, P. H., additional, Flügge, G., additional, Fouque, N., additional, Galaktionov, Y., additional, Gervasi, M., additional, Giovacchini, F., additional, Giusti, P., additional, Grandi, D., additional, Grimm, O., additional, Gu, W. Q., additional, Haino, S., additional, Hangarter, K., additional, Hasan, A., additional, Hermel, V., additional, Hofer, H., additional, Hungerford, W., additional, Ionica, M., additional, Jongmanns, M., additional, Karlamaa, K., additional, Karpinski, W., additional, Kenney, G., additional, Kim, D. H., additional, Kim, G. N., additional, Kim, K. S., additional, Kirn, T., additional, Klimentov, A., additional, Kossakowski, R., additional, Kounine, A., additional, Koutsenko, V., additional, Kraeber, M., additional, Laborie, G., additional, Laitinen, T., additional, Lamanna, G., additional, Laurenti, G., additional, Lebedev, A., additional, Lechanoine-Leluc, C., additional, Lee, M. W., additional, Lee, S. C., additional, Levi, G., additional, Lin, C. H., additional, Liu, H. T., additional, Lu, G., additional, Lu, Y. S., additional, Lübelsmeyer, K., additional, Luckey, D., additional, Lustermann, W., additional, Maña, C., additional, Margotti, A., additional, Mayet, F., additional, McNeil, R. R., additional, Menichelli, M., additional, Mihul, A., additional, Mujunen, A., additional, Oliva, A., additional, Palmonari, F., additional, Park, H. B., additional, Park, W. H., additional, Pauluzzi, M., additional, Pauss, F., additional, Pereira, R., additional, Perrin, E., additional, Pevsner, A., additional, Pilo, F., additional, Pimenta, M., additional, Plyaskin, V., additional, Pojidaev, V., additional, Pohl, M., additional, Produit, N., additional, Quadrani, L., additional, Rancoita, P. G., additional, Rapin, D., additional, Ren, D., additional, Ren, Z., additional, Ribordy, M., additional, Richeux, J. P., additional, Riihonen, E., additional, Ritakari, J., additional, Ro, S., additional, Roeser, U., additional, Sagdeev, R., additional, Santos, D., additional, Sartorelli, G., additional, Sbarra, C., additional, Schael, S., additional, von Dratzig, A. Schultz, additional, Schwering, G., additional, Seo, E. S., additional, Shin, J. W., additional, Shoumilov, E., additional, Shoutko, V., additional, Siedenburg, T., additional, Siedling, R., additional, Son, D., additional, Song, T., additional, Spada, F. R., additional, Spinella, F., additional, Steuer, M., additional, Sun, G. S., additional, Suter, H., additional, Tang, X. W., additional, Ting, Samuel C. C., additional, Ting, S. M., additional, Tomassetti, N., additional, Tornikoski, M., additional, Torsti, J., additional, Trümper, J., additional, Ulbricht, J., additional, Urpo, S., additional, Valtonen, E., additional, Vandenhirtz, J., additional, Velikhov, E., additional, Verlaat, B., additional, Vetlitsky, I., additional, Vezzu, F., additional, Vialle, J. P., additional, Viertel, G., additional, Vité, D., additional, Von Gunten, H., additional, Wicki, S. Waldmeier, additional, Wallraff, W., additional, Wang, J. Z., additional, Wiik, K., additional, Williams, C., additional, Wu, S. X., additional, Xia, P. C., additional, Xu, S., additional, Xu, Z. Z., additional, Yan, J. L., additional, Yan, L. G., additional, Yang, C. G., additional, Yang, J., additional, Yang, M., additional, Ye, S. W., additional, Zhang, H. Y., additional, Zhang, Z. P., additional, Zhao, D. X., additional, Zhou, F., additional, Zhou, Y., additional, Zhu, G. Y., additional, Zhu, W. Z., additional, Zhuang, H. L., additional, Zichichi, A., additional, Zimmermann, B., additional, and Zuccon, P., additional

Published
2010
Full Text
View/download PDF

47. The Alpha Magnetic Spectrometer (AMS)

Author

Alcaraz, J, Alpat, B, Ambrosi, G, Anderhub, H, Ao, L, Arefiev, A, Azzarello, P, Babucci, E, Baldini, L, Basile, M, Barancourt, D, Barao, F, Barbier, G, Barreira, G, Battiston, R, Becker, R, Becker, U, Bellagamba, L, Bene, P, Berdugo, J, Berges, P, Bertucci, B, Biland, A, Bizzaglia, S, Blasko, S, Boella, G, Boschini, M, Bourquin, M, Brocco, L, Bruni, G, Buenerd, M, Burger, J, Burger, W, Cai, X, Camps, C, Cannarsa, P, Capell, M, Casadei, D, Casaus, J, Castellini, G, Cecchi, C, Chang, Y, Chen, H, Chen, Z, Chernoplekov, N, Chiueh, T, Chuang, Y, Cindolo, F, Commichau, V, Contin, A, Crespo, P, Cristinziani, M, da Cunha, J, Dai, T, Deus, J, Dinu, N, Djambazov, L, Dantone, I, Dong, Z, Emonet, P, Engelberg, J, Eppling, F, Eronen, T, Esposito, G, Extermann, P, Favier, J, Fiandrini, E, Fisher, P, Fluegge, G, Fouque, N, Galaktionov, Y, Gervasi, M, Giusti, P, Grandi, D, Grimm, O, Gu, W, Hangarter, K, Hasan, A, Hermel, V, Hofer, H, Huang, M, Hungerford, W, Ionica, M, Ionica, R, Jongmanns, M, Karlamaa, K, Karpinski, W, Kenney, G, Kenny, J, Kim, W, Klimentov, A, Kossakowski, R, Koutsenko, V, Kraeber, M, Laborie, G, Laitinen, T, Lamanna, G, Laurenti, G, Lebedev, A, Lee, S, Levi, G, Levtchenko, P, Liu, C, Liu, H, Lopes, I, Lu, G, Lu, Y, Lubelsmeyer, K, Luckey, D, Lustermann, W, Mana, C, Margotti, A, Mayet, F, Mcneil, R, Meillon, B, Menichelli, M, Mihul, A, Mourao, A, Mujunen, A, Palmonari, F, Papi, A, Park, I, Pauluzzi, M, Pauss, F, Perrin, E, Pesci, A, Pevsner, A, Pimenta, M, Plyaskin, V, Pojidaev, V, Postolache, V, Produit, N, Rancoita, P, Rapin, D, Raupach, F, Ren, D, Ren, Z, Ribordy, M, Richeux, J, Riihonen, E, Ritakari, J, Roeser, U, Roissin, C, Sagdeev, R, Sartorelli, G, von Dratzig, A, Schwering, G, Scolieri, G, Seo, E, Shoutko, V, Shoumilov, E, Siedling, R, Son, D, Song, T, Steuer, M, Sun, G, Suter, H, Tang, X, Ting, S, Tornikoski, M, Torsti, J, Trumper, J, Ulbricht, J, Urpo, S, Usoskin, I, Valtonen, E, Vandenhirtz, J, Velcea, F, Velikhov, E, Verlaat, B, Vetlitsky, I, Vezzu, F, Vialle, J, Viertel, G, Vite, D, Von Gunten, H, Wicki, S, Wallraff, W, Wang, B, Wang, J, Wang, Y, Wiik, K, Williams, C, Wu, S, Xia, P, Yan, J, Yan, L, Yang, C, Yang, M, Ye, S, Yeh, P, Xu, Z, Zhang, H, Zhang, Z, Zhao, D, Zhu, G, Zhu, W, Zhuang, H, Zichichi, A, Zimmermann, B, BOELLA, GIULIANO FILIPPO, DAntone, I, GERVASI, MASSIMO, McNeil, R, Zimmermann, B., Alcaraz, J, Alpat, B, Ambrosi, G, Anderhub, H, Ao, L, Arefiev, A, Azzarello, P, Babucci, E, Baldini, L, Basile, M, Barancourt, D, Barao, F, Barbier, G, Barreira, G, Battiston, R, Becker, R, Becker, U, Bellagamba, L, Bene, P, Berdugo, J, Berges, P, Bertucci, B, Biland, A, Bizzaglia, S, Blasko, S, Boella, G, Boschini, M, Bourquin, M, Brocco, L, Bruni, G, Buenerd, M, Burger, J, Burger, W, Cai, X, Camps, C, Cannarsa, P, Capell, M, Casadei, D, Casaus, J, Castellini, G, Cecchi, C, Chang, Y, Chen, H, Chen, Z, Chernoplekov, N, Chiueh, T, Chuang, Y, Cindolo, F, Commichau, V, Contin, A, Crespo, P, Cristinziani, M, da Cunha, J, Dai, T, Deus, J, Dinu, N, Djambazov, L, Dantone, I, Dong, Z, Emonet, P, Engelberg, J, Eppling, F, Eronen, T, Esposito, G, Extermann, P, Favier, J, Fiandrini, E, Fisher, P, Fluegge, G, Fouque, N, Galaktionov, Y, Gervasi, M, Giusti, P, Grandi, D, Grimm, O, Gu, W, Hangarter, K, Hasan, A, Hermel, V, Hofer, H, Huang, M, Hungerford, W, Ionica, M, Ionica, R, Jongmanns, M, Karlamaa, K, Karpinski, W, Kenney, G, Kenny, J, Kim, W, Klimentov, A, Kossakowski, R, Koutsenko, V, Kraeber, M, Laborie, G, Laitinen, T, Lamanna, G, Laurenti, G, Lebedev, A, Lee, S, Levi, G, Levtchenko, P, Liu, C, Liu, H, Lopes, I, Lu, G, Lu, Y, Lubelsmeyer, K, Luckey, D, Lustermann, W, Mana, C, Margotti, A, Mayet, F, Mcneil, R, Meillon, B, Menichelli, M, Mihul, A, Mourao, A, Mujunen, A, Palmonari, F, Papi, A, Park, I, Pauluzzi, M, Pauss, F, Perrin, E, Pesci, A, Pevsner, A, Pimenta, M, Plyaskin, V, Pojidaev, V, Postolache, V, Produit, N, Rancoita, P, Rapin, D, Raupach, F, Ren, D, Ren, Z, Ribordy, M, Richeux, J, Riihonen, E, Ritakari, J, Roeser, U, Roissin, C, Sagdeev, R, Sartorelli, G, von Dratzig, A, Schwering, G, Scolieri, G, Seo, E, Shoutko, V, Shoumilov, E, Siedling, R, Son, D, Song, T, Steuer, M, Sun, G, Suter, H, Tang, X, Ting, S, Tornikoski, M, Torsti, J, Trumper, J, Ulbricht, J, Urpo, S, Usoskin, I, Valtonen, E, Vandenhirtz, J, Velcea, F, Velikhov, E, Verlaat, B, Vetlitsky, I, Vezzu, F, Vialle, J, Viertel, G, Vite, D, Von Gunten, H, Wicki, S, Wallraff, W, Wang, B, Wang, J, Wang, Y, Wiik, K, Williams, C, Wu, S, Xia, P, Yan, J, Yan, L, Yang, C, Yang, M, Ye, S, Yeh, P, Xu, Z, Zhang, H, Zhang, Z, Zhao, D, Zhu, G, Zhu, W, Zhuang, H, Zichichi, A, Zimmermann, B, BOELLA, GIULIANO FILIPPO, DAntone, I, GERVASI, MASSIMO, McNeil, R, and Zimmermann, B.

Abstract

The Alpha Magnetic Spectrometer (AMS) is a large acceptance (0.65 sr m(2)) detector designed to operate in the International Space Station (ISS) for three years. The purposes of the experiment are to search for cosmic antimatter and dark matter and to study the composition and energy spectrum of the primary cosmic rays. A "scated-down" version has been flown on the Space Shuttle Discovery for 10 days in June 1998. The complete AMS is programmed for installation on the ISS in October 2003 for an operational period of 3 yr. This contribution reports on the experimental configuration that will be installed on the ISS. (C) 2002 Elsevier Science B.V. All rights reserved.

Published
2002

48. The Alpha Magnetic Spectrometer (AMS) on the International Space Station: Part I – results from the test flight on the space shuttle

Author

Aguilar, M, Alcaraz, J, Allaby, J, Alpat, B, Ambrosi, G, Anderhub, H, Ao, L, Arefiev, A, Azzarello, P, Babucci, E, Baldini, L, Basile, M, Berdugo, J, Berges, P, Bertucci, B, Biland, A, Bizzaglia, S, Blasko, S, Boella, G, Boschini, M, Bourquin, M, Brocco, L, Bruni, G, Buenerd, M, Burger, J, Burger, W, Cai, X, Camps, C, Cannarsa, P, Capell, M, Casadei, D, Casaus, J, Castellini, G, Cecchi, C, Chang, Y, Chen, H, Chen, Z, Chernoplekov, N, Chiueh, T, Cho, K, Choi, M, Choi, Y, Chuang, Y, Cindolo, F, Commichau, V, Contin, A, Cortina-Gil, E, Cristinziani, M, da Cunha, J, Dai, T, Delgado, C, Deus, J, Dinu, N, Djambazov, L, D'Antone, I, Dong, Z, Emonet, P, Engelberg, J, Eppling, F, Eronen, T, Esposito, G, Extermann, P, Favier, J, Fiandrini, E, Fisher, P, Fluegge, G, Fouque, N, Galaktionov, Y, Gervasi, M, Giusti, P, Grandi, D, Grimms, O, Gu, W, Hangarter, K, Hasan, A, Hermel, V, Hofer, H, Huang, M, Hungerford, W, Ionica, M, Ionica, R, Jongmanns, M, Karlamaa, K, Karpinski, W, Kenney, G, Kenny, J, Kim, D, Kim, G, Kim, K, Kim, M, Klimentov, A, Kossakowski, R, Koutsenko, V, Kraeber, M, Laborie, G, Laitinen, T, Lamanna, G, Lanciotti, E, Laurenti, G, Lebedev, A, Lechanoine-Leluc, C, Lee, M, Lee, S, Levi, G, Levtchenko, P, Liu, C, Liu, H, Lopes, I, Lu, G, Lu, Y, Lubelsmeyer, K, Luckey, D, Lustermann, W, Mana, C, Margotti, A, Mayet, F, Mcneil, R, Meillon, B, Menichelli, M, Mihul, A, Mourao, A, Mujunen, A, Palmonari, F, Papi, A, Park, H, Park, W, Pauluzzi, M, Pauss, F, Perrin, E, Pesci, A, Pevsner, A, Pimenta, M, Plyaskin, V, Pojidaev, V, Pohl, M, Postolache, V, Produit, N, Rancoita, P, Rapin, D, Raupach, F, Ren, D, Ren, Z, Ribordy, M, Richeux, J, Riihonen, E, Ritakari, J, Ro, S, Roeser, U, Rossin, C, Sagdeev, R, Santos, D, Sartorelli, G, Sbarra, C, Schael, S, von Dratzig, A, Schwering, G, Scolieri, G, Seo, E, Shin, J, Shoutko, V, Shoumilov, E, Siedling, R, Son, D, Song, T, Steuer, M, Sun, G, Suter, H, Tang, X, Ting, S, Tornikoski, M, Torsti, J, Trumper, J, Ulbricht, J, Urpo, S, Valtonen, E, Vandenhirtz, J, Velcea, F, Velikhov, E, Verlaat, B, Vetlitsky, I, Vezzu, F, V, Jp, Viertel, G, Vite, D, Von Gunten, H, Wicki, S, Wallraff, W, Wang, B, Wang, J, Wang, Y, Wiik, K, Williams, C, Wu, S, Xia, P, Yan, J, Yan, L, Yang, C, Yang, J, Yang, M, Ye, S, Yeh, P, Xu, Z, Zhang, H, Zhang, Z, Zhao, D, Zhu, G, Zhu, W, Zhuang, H, Zichichi, A, Zimmermann, B, Zuccon, P, Burger, JD, Burger, WJ, Cai, XD, Chang, YH, Chen, HF, Chen, HS, Chen, ZG, Chernoplekov, NA, Chiueh, TH, Choi, MJ, Choi, YY, Chuang, YL, da Cunha, JP, Dai, TS, Deus, JD, Dong, ZR, Eppling, FJ, Fisher, PH, Gu, WQ, Huang, MA, Kim, DH, Kim, GN, Kim, KS, Kim, MY, Lee, MW, Lee, SC, Liu, CL, Liu, HT, Lu, YS, McNeil, RR, Park, HB, Park, WH, Rancoita, PG, Richeux, JP, von Dratzig, AS, Seo, ES, Shin, JW, Sun, GS, Tang, XW, Ting, SCC, Ting, SM, F Vialle, JP, Wicki, SW, Wang, BC, Wang, JZ, Wang, YH, Wu, SX, Xia, PC, Yan, JL, Yan, LG, Yang, CG, Ye, SW, Xu, ZZ, Zhang, HY, Zhang, ZP, Zhao, DX, Zhu, GY, Zhu, WZ, Zhuang, HL, Aguilar, M, Alcaraz, J, Allaby, J, Alpat, B, Ambrosi, G, Anderhub, H, Ao, L, Arefiev, A, Azzarello, P, Babucci, E, Baldini, L, Basile, M, Berdugo, J, Berges, P, Bertucci, B, Biland, A, Bizzaglia, S, Blasko, S, Boella, G, Boschini, M, Bourquin, M, Brocco, L, Bruni, G, Buenerd, M, Burger, J, Burger, W, Cai, X, Camps, C, Cannarsa, P, Capell, M, Casadei, D, Casaus, J, Castellini, G, Cecchi, C, Chang, Y, Chen, H, Chen, Z, Chernoplekov, N, Chiueh, T, Cho, K, Choi, M, Choi, Y, Chuang, Y, Cindolo, F, Commichau, V, Contin, A, Cortina-Gil, E, Cristinziani, M, da Cunha, J, Dai, T, Delgado, C, Deus, J, Dinu, N, Djambazov, L, D'Antone, I, Dong, Z, Emonet, P, Engelberg, J, Eppling, F, Eronen, T, Esposito, G, Extermann, P, Favier, J, Fiandrini, E, Fisher, P, Fluegge, G, Fouque, N, Galaktionov, Y, Gervasi, M, Giusti, P, Grandi, D, Grimms, O, Gu, W, Hangarter, K, Hasan, A, Hermel, V, Hofer, H, Huang, M, Hungerford, W, Ionica, M, Ionica, R, Jongmanns, M, Karlamaa, K, Karpinski, W, Kenney, G, Kenny, J, Kim, D, Kim, G, Kim, K, Kim, M, Klimentov, A, Kossakowski, R, Koutsenko, V, Kraeber, M, Laborie, G, Laitinen, T, Lamanna, G, Lanciotti, E, Laurenti, G, Lebedev, A, Lechanoine-Leluc, C, Lee, M, Lee, S, Levi, G, Levtchenko, P, Liu, C, Liu, H, Lopes, I, Lu, G, Lu, Y, Lubelsmeyer, K, Luckey, D, Lustermann, W, Mana, C, Margotti, A, Mayet, F, Mcneil, R, Meillon, B, Menichelli, M, Mihul, A, Mourao, A, Mujunen, A, Palmonari, F, Papi, A, Park, H, Park, W, Pauluzzi, M, Pauss, F, Perrin, E, Pesci, A, Pevsner, A, Pimenta, M, Plyaskin, V, Pojidaev, V, Pohl, M, Postolache, V, Produit, N, Rancoita, P, Rapin, D, Raupach, F, Ren, D, Ren, Z, Ribordy, M, Richeux, J, Riihonen, E, Ritakari, J, Ro, S, Roeser, U, Rossin, C, Sagdeev, R, Santos, D, Sartorelli, G, Sbarra, C, Schael, S, von Dratzig, A, Schwering, G, Scolieri, G, Seo, E, Shin, J, Shoutko, V, Shoumilov, E, Siedling, R, Son, D, Song, T, Steuer, M, Sun, G, Suter, H, Tang, X, Ting, S, Tornikoski, M, Torsti, J, Trumper, J, Ulbricht, J, Urpo, S, Valtonen, E, Vandenhirtz, J, Velcea, F, Velikhov, E, Verlaat, B, Vetlitsky, I, Vezzu, F, V, Jp, Viertel, G, Vite, D, Von Gunten, H, Wicki, S, Wallraff, W, Wang, B, Wang, J, Wang, Y, Wiik, K, Williams, C, Wu, S, Xia, P, Yan, J, Yan, L, Yang, C, Yang, J, Yang, M, Ye, S, Yeh, P, Xu, Z, Zhang, H, Zhang, Z, Zhao, D, Zhu, G, Zhu, W, Zhuang, H, Zichichi, A, Zimmermann, B, Zuccon, P, Burger, JD, Burger, WJ, Cai, XD, Chang, YH, Chen, HF, Chen, HS, Chen, ZG, Chernoplekov, NA, Chiueh, TH, Choi, MJ, Choi, YY, Chuang, YL, da Cunha, JP, Dai, TS, Deus, JD, Dong, ZR, Eppling, FJ, Fisher, PH, Gu, WQ, Huang, MA, Kim, DH, Kim, GN, Kim, KS, Kim, MY, Lee, MW, Lee, SC, Liu, CL, Liu, HT, Lu, YS, McNeil, RR, Park, HB, Park, WH, Rancoita, PG, Richeux, JP, von Dratzig, AS, Seo, ES, Shin, JW, Sun, GS, Tang, XW, Ting, SCC, Ting, SM, F Vialle, JP, Wicki, SW, Wang, BC, Wang, JZ, Wang, YH, Wu, SX, Xia, PC, Yan, JL, Yan, LG, Yang, CG, Ye, SW, Xu, ZZ, Zhang, HY, Zhang, ZP, Zhao, DX, Zhu, GY, Zhu, WZ, and Zhuang, HL

Abstract

The Alpha Magnetic Spectrometer (AMS) was flown on the space shuttle Discovery during flight STS-91 (June 1998) in a 51.7 deg orbit at altitudes between 320 and 390 km. A search for antihelium nuclei in the rigidity range 1–140 GV was performed. No antihelium nuclei were detected at any rigidity. An upper limit on the flux ratio of antihelium to helium of < 1.1×10^−6 was obtained. The high energy proton, electron, positron, helium, antiproton and deuterium spectra were accurately measured. For each particle and nuclei two distinct spectra were observed: a higher energy spectrum and a substantial second spectrum. Positrons in the second spectrum were found to be much more abundant than electrons. Tracing particles from the second spectra shows that most of them travel for an extended period of time in the geomagnetic field, and that the positive particles (p and e+) and negative ones (e−) originate from two complementary geographic regions. The second helium spectrum flux over the energy range 0.1–1.2 GeV/nucleon was measured to be (6.3 ± 0.9) × 10^−3(m^2 s sr)^−1. Over 90 percent of the helium flux was determined to be 3He at the 90% confidence level

Published
2002

Catalog

Books, media, physical & digital resources
See catalog results