Publicação
Observation of Complex Time Structures in the Cosmic-Ray Electron and Positron Fluxes with the Alpha Magnetic Spectrometer on the International Space Station
| dc.contributor.author | AMS collaboration (252 authors) | |
| dc.contributor.author | Arruda, L. | |
| dc.contributor.author | Barao, F. | |
| dc.contributor.author | Orcinha, M. | |
| dc.date.accessioned | 2019-02-05T16:47:01Z | |
| dc.date.available | 2019-02-05T16:47:01Z | |
| dc.date.issued | 2018-08-01 | |
| dc.date.updated | 2019-02-05T16:47:01Z | |
| dc.description.abstract | We present high-statistics, precision measurements of the detailed time and energy dependence of the primary cosmic-ray electron flux and positron flux over 79 Bartels rotations from May 2011 to May 2017 in the energy range from 1 to 50 GeV. For the first time, the charge-sign dependent modulation during solar maximum has been investigated in detail by leptons alone. Based on 23.5×106 events, we report the observation of short-term structures on the timescale of months coincident in both the electron flux and the positron flux. These structures are not visible in the e+/e- flux ratio. The precision measurements across the solar polarity reversal show that the ratio exhibits a smooth transition over 830±30 days from one value to another. The midpoint of the transition shows an energy dependent delay relative to the reversal and changes by 260±30 days from 1 to 6 GeV. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | Phys.Rev.Lett. 121 (2018) 051102; DOI 10.1103/PhysRevLett.121.051102 | |
| dc.identifier.uri | http://dx.doi.org/10.1103/PhysRevLett.121.051102 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/27696 | |
| dc.language.iso | eng | |
| dc.relation | Detection of intermediate energy cosmic rays with the AMS experiment | |
| dc.relation | Multichannel Investigation of Solar Modulation Effects in Galactic Cosmic Rays | |
| dc.title | Observation of Complex Time Structures in the Cosmic-Ray Electron and Positron Fluxes with the Alpha Magnetic Spectrometer on the International Space Station | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.awardNumber | PTDC/FIS/122567/2010 | |
| oaire.awardNumber | 707543 | |
| oaire.awardTitle | Detection of intermediate energy cosmic rays with the AMS experiment | |
| oaire.awardTitle | Multichannel Investigation of Solar Modulation Effects in Galactic Cosmic Rays | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT/5876-PPCDTI/PTDC%2FFIS%2F122567%2F2010/PT | |
| oaire.awardURI | info:eu-repo/grantAgreement/EC/H2020/707543/EU | |
| oaire.fundingStream | 5876-PPCDTI | |
| oaire.fundingStream | H2020 | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.identifier | http://doi.org/10.13039/501100008530 | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
| project.funder.name | European Commission | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article | |
| relation.isProjectOfPublication | 532de62c-fc11-4e82-9918-ae72961a61b9 | |
| relation.isProjectOfPublication | 065b0454-0f76-423a-a80c-4a270c705dd5 | |
| relation.isProjectOfPublication.latestForDiscovery | 532de62c-fc11-4e82-9918-ae72961a61b9 |