CERN Accelerating science

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1.
Properties of Cosmic Lithium Isotopes Measured by the Alpha Magnetic Spectrometer / AMS Collaboration
We present the first measurement of cosmic-ray fluxes of  Li6 and  Li7 isotopes in the rigidity range from 1.9 to 25 GV. The measurements are based on 9.7×105  Li6 and 1.04×106  Li7 nuclei collected by the Alpha Magnetic Spectrometer on the International Space Station from May 2011 to October 2023. [...]
2025 - 8 p. - Published in : Phys. Rev. Lett. 134 (2025) 201001 Fulltext: PDF;
2.
Antiprotons and Elementary Particles over a Solar Cycle: Results from the Alpha Magnetic Spectrometer / AMS Collaboration
We present results over an 11-year Solar cycle of cosmic antiprotons based on 1.1×106 events in the rigidity range from 1.00 to 41.9 GV. The p¯ fluxes exhibit distinct properties. [...]
2025 - 12 p. - Published in : Phys. Rev. Lett. 134 (2025) 051002 Fulltext: PDF;
3.
Solar Modulation of Cosmic Nuclei over a Solar Cycle: Results from the Alpha Magnetic Spectrometer / AMS Collaboration
We report the properties of precision time structures of cosmic nuclei He, Li, Be, B, C, N, and O fluxes over an 11-year solar cycle from May 2011 to November 2022 in the rigidity range from 1.92 to 60.3 GV. The nuclei fluxes show similar but not identical time variations with amplitudes decreasing with increasing rigidity. [...]
2025 - 8 p. - Published in : Phys. Rev. Lett. 134 (2025) 051001 Fulltext: PDF;
4.
The LSPE-Strip Pointing Reconstruction and Star Tracker / Maris, Michele (Trieste Observ.) ; Tomasi, Maurizio (Milan U. ; INFN, Milan) ; Baratto, Matteo (Milan U. ; INFN, Milan) ; Paonessa, Fabio (IFN, Rome) ; Franceschet, Cristian (Milan U. ; INFN, Milan) ; Tavagnacco, Daniele (Trieste Observ.) ; Peverini, Oscar Antonio (IFN, Rome) ; Villa, Fabrizio (Bologna Observ.) ; Zannoni, Mario (Milan U. ; INFN, Milan Bicocca) ; Bersanelli, Marco (Milan U. ; INFN, Milan) et al.
This paper aims to describe the Pointing Reconstruction Model (PRM) and the prototype Star Tracker, which will be mounted on LSPE-Strip, a microwave Q- and W-band CMB telescope planned for installation at the "Observatorio del Teide" in Tenerife. [...]
arXiv:2501.05604.
- 3.
Fulltext
5.
Properties of Cosmic Deuterons Measured by the Alpha Magnetic Spectrometer / AMS Collaboration
Precision measurements by the Alpha Magnetic Spectrometer (AMS) on the International Space Station of the deuteron (D) flux are presented. The measurements are based on 21×106 D nuclei in the rigidity range from 1.9 to 21 GV collected from May 2011 to April 2021. [...]
2024 - 8 p. - Published in : Phys. Rev. Lett. 132 (2024) 261001 Fulltext: PDF;
6.
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 / AMS Collaboration
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 ∼250  GeV, but, from 20 to 250 GeV, the slope decreases by an order of magnitude. [...]
2013 - 10 p. - Published in : Phys. Rev. Lett. 110 (2013) 141102 External links: Interactions.org article; Symmetry Magazine article; Press Release
7.
Temporal Structures in Positron Spectra and Charge-Sign Effects in Galactic Cosmic Rays / AMS Collaboration
We present the precision measurements of 11 years of daily cosmic positron fluxes in the rigidity range from 1.00 to 41.9 GV based on 3.4×106 positrons collected with the Alpha Magnetic Spectrometer (AMS) aboard the International Space Station. The positron fluxes show distinctly different time variations from the electron fluxes at short and long timescales. [...]
2023 - 10 p. - Published in : Phys. Rev. Lett. 131 (2023) 151002 Fulltext: PDF;
8.
Properties of Cosmic-Ray Sulfur and Determination of the Composition of Primary Cosmic-Ray Carbon, Neon, Magnesium, and Sulfur: Ten-Year Results from the Alpha Magnetic Spectrometer / AMS Collaboration
We report the properties of primary cosmic-ray sulfur (S) in the rigidity range 2.15 GV to 3.0 TV based on 0.38×106 sulfur nuclei collected by the Alpha Magnetic Spectrometer experiment (AMS). We observed that above 90 GV the rigidity dependence of the S flux is identical to the rigidity dependence of Ne-Mg-Si fluxes, which is different from the rigidity dependence of the He-C-O-Fe fluxes. [...]
2023 - 9 p. - Published in : Phys. Rev. Lett. 130 (2023) 211002 Fulltext: PDF;
9.
Temporal Structures in Electron Spectra and Charge Sign Effects in Galactic Cosmic Rays / AMS Collaboration
We present the precision measurements of 11 years of daily cosmic electron fluxes in the rigidity interval from 1.00 to 41.9 GV based on 2.0×108 electrons collected with the Alpha Magnetic Spectrometer (AMS) aboard the International Space Station. The electron fluxes exhibit variations on multiple timescales. [...]
2023 - 11 p. - Published in : Phys. Rev. Lett. 130 (2023) 161001 Fulltext: PDF;
10.
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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Veja também: nomes de autores similares
79 Gervasi, M
7 Gervasi, M.
10 Gervasi, Massimo
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