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Time Dependence of ...
Time Dependence of the Flux of Helium Nuclei in Cosmic Rays Measured by the PAMELA Experiment between 2006 July and 2009 December
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- Marcelli, N. (författare)
- Univ Roma Tor Vergata, Dept Phys, I-00133 Rome, Italy.;INFN, Sez Rome Tor Vergata, I-00133 Rome, Italy.
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- Munini, R. (författare)
- INFN, Sez Trieste, I-34149 Trieste, Italy.;IFPU, I-34014 Trieste, Italy.
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- Carlson, Per (författare)
- KTH,Partikel- och astropartikelfysik,Albanova VinnExcellence Center for Protein Technology, ProNova,Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden.
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- Pearce, Mark, 1970- (författare)
- KTH,Partikel- och astropartikelfysik,Albanova VinnExcellence Center for Protein Technology, ProNova,Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden.
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- Zampa, N. (författare)
- INFN, Sez Trieste, I-34149 Trieste, Italy.
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Univ Roma Tor Vergata, Dept Phys, I-00133 Rome, Italy;INFN, Sez Rome Tor Vergata, I-00133 Rome, Italy. INFN, Sez Trieste, I-34149 Trieste, Italy.;IFPU, I-34014 Trieste, Italy. (creator_code:org_t)
- 2020-04-24
- 2020
- Engelska.
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Ingår i: Astrophysical Journal. - : IOP PUBLISHING LTD. - 0004-637X .- 1538-4357. ; 893:2
- Relaterad länk:
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https://iopscience.i...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Ämnesord
Stäng
- Precise time-dependent measurements of the Z = 2 component in the cosmic radiation provide crucial information about the propagation of charged particles through the heliosphere. The PAMELA experiment, with its long flight duration (2006 June 15-2016 January 23) and the low energy threshold (80 MeV/n) is an ideal detector for cosmic-ray solar modulation studies. In this paper, the helium nuclei spectra measured by the PAMELA instrument from 2006 July to 2009 December over a Carrington rotation time basis are presented. A state-of-the-art three-dimensional model for cosmic-ray propagation inside the heliosphere was used to interpret the time-dependent measured fluxes. Proton-to-helium flux ratio time profiles at various rigidities are also presented in order to study any features that could result from the different masses and local interstellar spectra shapes.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- Cosmic ray detectors
- Galactic cosmic rays
- Heliosphere
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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