Precision measurements of cosmic ray positrons are presented up to 1 TeV based on 1.9 million positrons collected by the Alpha Magnetic Spectrometer on the International Space Station. The positron flux exhibits complex energy dependence. Its distinctive properties are (a) a significant excess starting from 25.2±1.8 GeV compared to the lower-energy, power-law trend, (b) a sharp dropoff above 284 +91 −64 GeV, (c) in the entire energy range the positron flux is well described by the sum of a term associated with the positrons produced in the collision of cosmic rays, which dominates at low energies, and a new source term of positrons, which dominates at high energies, and (d) a finite energy cutoff of the source term of Es=810 ...
A precision measurement by the Alpha Magnetic Spectrometer on the International Space Station of the...
We present high-statistics, precision measurements of the detailed time and energy dependence of the...
AbstractA measurement of the cosmic ray positron fraction e+/(e++e−) in the energy range of 1–30 GeV...
Precision measurements of cosmic ray positrons are presented up to 1 TeV based on 1.9 million positr...
Precision results on cosmic-ray electrons are presented in the energy range from 0.5 GeV to 1.4 TeV ...
A precision measurement by AMS of the positron fraction in primary cosmic rays in the energy range f...
A precision measurement by AMS of the positron fraction in primary cosmic rays in the energy range f...
A precision measurement by AMS of the positron fraction in primary cosmic rays in the energy range f...
A precision measurement by the Alpha Magnetic Spectrometer on the International Space Station of the...
A precision measurement by the Alpha Magnetic Spectrometer on the International Space Station of the...
We present high-statistics, precision measurements of the detailed time and energy dependence of the...
AbstractA measurement of the cosmic ray positron fraction e+/(e++e−) in the energy range of 1–30 GeV...
Precision measurements of cosmic ray positrons are presented up to 1 TeV based on 1.9 million positr...
Precision results on cosmic-ray electrons are presented in the energy range from 0.5 GeV to 1.4 TeV ...
A precision measurement by AMS of the positron fraction in primary cosmic rays in the energy range f...
A precision measurement by AMS of the positron fraction in primary cosmic rays in the energy range f...
A precision measurement by AMS of the positron fraction in primary cosmic rays in the energy range f...
A precision measurement by the Alpha Magnetic Spectrometer on the International Space Station of the...
A precision measurement by the Alpha Magnetic Spectrometer on the International Space Station of the...
We present high-statistics, precision measurements of the detailed time and energy dependence of the...
AbstractA measurement of the cosmic ray positron fraction e+/(e++e−) in the energy range of 1–30 GeV...