Journal
PHYSICAL REVIEW LETTERS
Volume 121, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.121.051102
Keywords
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Categories
Funding
- National Energy Research Scientific Computing Center [DE-ACO2-05CH11231]
- Sao Paulo Research Foundation (FAPESP), Brazil [2014/19149-7, 2015/50378-5, 2016/ 10222-9]
- CAS
- NSFC
- MOST
- provincial governments of Shandong, Jiangsu, Guangdong
- China Scholarship Council, China
- Action H2020 MSCAIF-2015 [707543-MAtISSE]
- European Union
- Finnish Funding Agency for Innovation (Tekes) [40361/01, 40518/03]
- Academy of Finland, Finland [258963]
- CNRS/ IN2P3
- CNES
- Enigmass
- ANR, France
- Pascale Ehrenfreund, DLR [50001403]
- JARAHPC, Germany [JARA0052]
- INFN
- ASI under ASI-INFN [2013-002-R.0, 2014-037-R.0]
- CHEP
- NRF at Kyungpook National University [NRF-2009-0080142, NRF-2012-010226]
- Ewha Womans University, Korea [NRF-2013004883]
- Consejo Nacional de Ciencia y Tecnologia and UNAM, Mexico
- PCT, Portugal [PTDC/FIS/122567/2010]
- CIEMAT
- IAC
- CDT
- SEIDI-MINECO [ESP2015-71662-C2-(1-P/2-P), SEV-2015-0548, MDM-2015-0509, RyC-2013-14660]
- Swiss National Science Foundation (SNSF), federal and cantonal authorities, Switzerland
- Academia Sinica and the Ministry of Science and Technology (MOST) [103-2112-M-006-018-MY3, 105-2112-M-001-003, CDA-105-M06]
- Turkish Atomic Energy Authority, Turkey [2017TEA K(CERN)A5. H6. F2-15]
- NSF [14255202, 1551980]
- Wyle Laboratories Grant [2014/T72497]
- NASA NESSF Grant, USA [HELI015F-0005]
- CERN including Rolf-Dieter Heuer
- CERN IT department and Bernd Panzer-Steindel
- European Space Agency including Johann -Dietrich Worner
- Simonetta Di Pippo
- Fundação para a Ciência e a Tecnologia [PTDC/FIS/122567/2010] Funding Source: FCT
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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 x 10(6) 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.
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