Bibcode
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.; Borsini, S.; Boschini, M. J.; Boudoul, G.; Bourquin, M.; Brun, P.; Buénerd, M.; Burger, J.; Burger, W.; Cadoux, F.; Cai, X. D.; Capell, M.; Casadei, D.; Casaus, J.; Cascioli, V.; Castellini, G.; Cernuda, I.; Cervelli, F.; Chae, M. J.; Chang, Y. H.; Chen, A. I.; Chen, C. R.; Chen, H.; Cheng, G. M.; Chen, H. S.; Cheng, L.; Chernoplyiokov, N.; Chikanian, A.; Choumilov, E.; Choutko, V.; Chung, C. H.; Clark, C.; Clavero, R.; Coignet, G.; Commichau, V.; Consolandi, C.; Contin, A.; Corti, C.; Costado-Dios, M. T.; Coste, B.; Crespo, D.; Cui, Z.; Dai, M.; Delgado, C.; Della Torre, S.; Demirkoz, B.; Dennett, P.; Derome, L.; Di Falco, S.; Diao, X. H.; Diago, A.; Djambazov, L.; Díaz, C.; von Doetinchem, P.; Du, W. J.; Dubois, J. M.; Duperay, R.; Duranti, M.; D'Urso, D.; Egorov, A.; Eline, A.; Eppling, F. J.; Eronen, T.; van Es, J. et al.
Bibliographical reference
Physical Review Letters, vol. 110, Issue 14, id. 141102
Advertised on:
4
2013
Journal
Citations
849
Refereed citations
674
Description
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
6.8×106 positron and electron events is presented. The
very accurate data show that the positron fraction is steadily
increasing from 10 to ˜250GeV, 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.
Related projects
Particle Astrophysics
The members of the Particle Astrophysics Group of the IAC participate actively in three large international collaborations of high-energy astrophysics: AMS-02 (Alpha Magnetic Spectrometer), the Cherenkov radiation telescopes MAGIC I and II and the Cherenkov Telescope Array Observatory ( CTAO). We also participate in the ASTRI mini-array, the gamma
Mónica Luisa
Vázquez Acosta