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Anisotropy of Elementary Particle Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station
/ Casaus, Jorge (Madrid, CIEMAT) ; Maña, Carlos (Madrid, CIEMAT) ; Molero, Miguel (Madrid, CIEMAT) ; Velasco, Miguel Angel (Madrid, CIEMAT) ; Gebauer, Iris (KIT, Karlsruhe) ; Graziani, Maura (KIT, Karlsruhe) ; Zeissler, Stefan (KIT, Karlsruhe) ; La Vacca, Giuseppe (INFN, Milan Bicocca ; Milan Bicocca U.) ; Gervasi, Massimo (INFN, Milan Bicocca ; Milan Bicocca U.) ; Rancoita, Pier Giorgio (INFN, Milan Bicocca ; Milan Bicocca U.)
/AMS Collaboration
A measurement of the dipole anisotropy in the arrival directions of galactic cosmic positrons, electrons and protons has been performed with the Alpha Magnetic Spectrometer (AMS) onboard the International Space Station (ISS) using the first 6 years of data. Thanks to its wide field of view and to the inclination of the ISS orbit, AMS provides nearly full sky coverage in galactic coordinates, which allows to determine the three independent dipole components for each cosmic ray species. [...]
SISSA, 2018 - 4 p.
- Published in : PoS ICHEP2018 (2019) 370
Fulltext: PDF;
In : XXXIX International Conference on High Energy Physics, Seoul, Korea, 4 - 11 Jul 2018, pp.370
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Anisotropy of Particle Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the ISS
/ Gebauer, Iris (KIT, Karlsruhe, IPE) ; Graziani, M (KIT, Karlsruhe, IPE) ; Casaus, J (Madrid, CIEMAT) ; Molero, M (Madrid, CIEMAT) ; Mana, C (Madrid, CIEMAT) ; Velasco, M A (Madrid, CIEMAT) ; Gervasi, M (INFN, Milan Bicocca ; Milan Bicocca U.) ; Rancoita, P G (INFN, Milan Bicocca ; Milan Bicocca U.) ; La Vacca, G (INFN, Milan Bicocca ; Milan Bicocca U.)
/AMS Collaboration
An analysis of anisotropies in the arrival directions of galactic electrons and positrons, as well as protons, Helium, Carbon and Oxygen has been performed with the Alpha Magnetic Spectrometer on the International Space Station using the first 6.5 years (electrons and positrons) and the first 7.5 years (protons, Helium, Carbon, Oxygen) of data taking. Results on a dipole signal in Galactic coordinates are reported.The arrival directions of all studied cosmic ray species are consistent with isotropy. [...]
2020 - 8 p.
- Published in : PoS ICRC2019 (2020) 150
Fulltext: PDF;
In : 36th International Cosmic Ray Conference, Madison, WI, USA, 24 Jul - 1 Aug 2019, pp.150
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High precision particle astrophysics as a new window on the universe with an Antimatter Large Acceptance Detector In Orbit (ALADInO)
/ Battiston, R (Trento U. ; TIFPA-INFN, Trento) ; Bertucci, B (Perugia U. ; INFN, Perugia) ; Adriani, O (Florence U. ; INFN, Florence) ; Ambrosi, G (INFN, Perugia) ; Baoudoy, B (IRFU, Saclay) ; Blasi, P (GSSI, Aquila) ; Boezio, M (INFN, Trieste) ; Campana, D (INFN, Naples) ; Derome, L (LPSC, Grenoble) ; De Mitri, I (GSSI, Aquila) et al.
Multimessenger astrophysics is based on the detection, with the highest possible accuracy, of the cosmic radiation. During the last 20 years, the advent space-borne magnetic spectrometers in space (AMS-01, Pamela, AMS-02), able to measure the charged cosmic radiation separating matter from antimatter, and to provide accurate measurement of the rarest components of Cosmic Rays (CRs) to the highest possible energies, have become possible, together with the ultra-precise measurement of ordinary CRs. [...]
2021 - 32 p.
- Published in : Exp. Astron.: 51 (2021) , pp. 1299-1330
- Published in : Exp. Astron.: 51 (2021) , pp. 1331-1332
Fulltext: Publication - PDF; Erratum - PDF;
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Anisotropy of Particle Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the ISS
/ Gebauer, Iris (KIT, Karlsruhe) ; Graziani, M (KIT, Karlsruhe) ; Casaus, Jorge (Madrid, CIEMAT) ; Molero, Miguel (Madrid, CIEMAT) ; Maña, Carlos (Madrid, CIEMAT) ; Velasco, Miguel Angel (Madrid, CIEMAT) ; Gervasi, Massimo (INFN, Milan Bicocca ; Milan Bicocca U.) ; La Vacca, Giuseppe (INFN, Milan Bicocca ; Milan Bicocca U.) ; Rancoita, Pier Giorgio (INFN, Milan Bicocca ; Milan Bicocca U.)
/AMS
An analysis of anisotropies in the arrival directions of galactic electrons and positrons, as well as protons, Helium, Carbon and Oxygen has been performed with the Alpha Magnetic Spectrometer on the International Space Station using the first 6.5 years (electrons and positrons) and the first 7.5 years (protons, Helium, Carbon, Oxygen) of data taking. Results on a dipole signal in Galactic coordinates are reported.
The arrival directions of all studied cosmic ray species are consistent with isotropy. [...]
SISSA, 2019 - 5 p.
- Published in : PoS LeptonPhoton2019 (2019) 117
Fulltext: PDF;
In : XXIX International Symposium on Lepton Photon Interactions at High Energies, Toronto, Canada, 5 - 10 Aug 2019, pp.117
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Towards Understanding the Origin of Cosmic-Ray Electrons
/ Aguilar, M (Madrid, CIEMAT) ; Ali Cavasonza, L (IAS, Julich ; JCHP, Julich) ; Alpat, B (INFN, Perugia ; Perugia U.) ; Ambrosi, G (INFN, Perugia ; Perugia U.) ; Arruda, L (LIP, Lisbon) ; Attig, N (IAS, Julich ; JCHP, Julich) ; Azzarello, P (Geneva U.) ; Bachlechner, A (IAS, Julich ; JCHP, Julich) ; Barao, F (LIP, Lisbon) ; Barrau, A (LPSC, Grenoble) et al.
/AMS
Precision results on cosmic-ray electrons are presented in the energy range from 0.5 GeV to 1.4 TeV based on 28.1×106 electrons collected by the Alpha Magnetic Spectrometer on the International Space Station. In the entire energy range the electron and positron spectra have distinctly different magnitudes and energy dependences. [...]
2019 - 9 p.
- Published in : Phys. Rev. Lett. 122 (2019) 101101
Fulltext from Publisher: PDF;
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Towards Understanding the Origin of Cosmic-Ray Positrons
/ Aguilar, M (Madrid, CIEMAT) ; Ali Cavasonza, L (IAS, Julich ; JCHP, Julich) ; Ambrosi, G (INFN, Perugia) ; Arruda, L (LIP, Lisbon) ; Attig, N (IAS, Julich ; JCHP, Julich) ; Azzarello, P (Geneva U.) ; Bachlechner, A (IAS, Julich ; JCHP, Julich) ; Barao, F (LIP, Lisbon) ; Barrau, A (LPSC, Grenoble) ; Barrin, L (CERN) et al.
/AMS
Precision measurements of cosmic ray positrons by the Alpha Magnetic Spectrometer on the International Space Station are presented up to 1 TeV based on 1.9 million positrons.The positron flux exhibits a significant excess starting from $25.2 \pm 1.8$ GeV followed by a sharp drop-off above $284^{+91}_{-64}$ GeV.In the entire energy range the positron flux is well described by the sum of a diffuse termassociated with low energy secondary positrons produced in the collision of cosmic rays, and a new source term of high energy positrons with a finite energy cutoff. The finite cutoff energy of the source term, $E_s$, is established with a significance of more than $4 \sigma$, and it's value is determined to be $E_s = 810^{+310}_{-180}$ GeV.These experimental data on cosmic ray positrons show that, at high energies, they predominantly originate either from dark matter collisions or from new astrophysical sources..
2019 - 9 p.
- Published in : Phys. Rev. Lett. 122 (2019) 041102
Fulltext from Publisher: PDF;
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