MEASUREMENT OF BORON AND CARBON FLUXES IN COSMIC RAYS WITH THE PAMELA EXPERIMENT

MEASUREMENT OF BORON AND CARBON FLUXES IN COSMIC RAYS WITH THE PAMELA EXPERIMENT

The propagation of cosmic rays inside our galaxy plays a fundamental role in shaping their injection spectra into those observed at Earth. One of the best tools to investigate this issue is the ratio of fluxes for secondary and primary species. The boron-to-carbon (B/C) ratio, in particular, is a se...

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Veröffentlicht in:The Astrophysical journal 2014-08, Vol.791 (2), p.1-11
Hauptverfasser: ADRIANI, O, Barbarino, G C, BAZILEVSKAYA, G A, Bellotti, R, BOEZIO, M, Bogomolov, E A, BONGI, M, Bonvicini, V, Bottai, S, Bruno, A
Format: Artikel
Sprache:eng
Schlagworte:
astroparticle physics
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
BORON
CARBON
CONCENTRATION RATIO
COSMIC RADIATION
COSMIC RAY PROPAGATION
Cosmic rays
Earth
Fluxes
GALAXIES
GALAXY NUCLEI
GEV RANGE
INJECTION
KINETIC ENERGY
Nuclei
SPACE
SPECTRA
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Zusammenfassung:The propagation of cosmic rays inside our galaxy plays a fundamental role in shaping their injection spectra into those observed at Earth. One of the best tools to investigate this issue is the ratio of fluxes for secondary and primary species. The boron-to-carbon (B/C) ratio, in particular, is a sensitive probe to investigate propagation mechanisms. This paper presents new measurements of the absolute fluxes of boron and carbon nuclei as well as the B/C ratio from the PAMELA space experiment. The results span the range 0.44-129 GeV/n in kinetic energy for data taken in the period 2006 July to 2008 March.
ISSN:1538-4357
0004-637X
1538-4357
DOI:10.1088/0004-637X/791/2/93