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- Adriani, O. (author)
Pamela's measurements of magnetospheric effects on high-energy solar particles
- Article/chapterEnglish2015
Publisher, publication year, extent ...
- 2015
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:kth-163445
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-163445URI
- https://doi.org/10.1088/2041-8205/801/1/L3DOI
Supplementary language notes
- Language:English
- Summary in:English
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- SwePubSwePub
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Notes
- QC 20150408
- The nature of particle acceleration at the Sun, whether through flare reconnection processes or through shocks driven by coronal mass ejections, is still under scrutiny despite decades of research. The measured properties of solar energetic particles (SEPs) have long been modeled in different particle-acceleration scenarios. The challenge has been to disentangle the effects of transport from those of acceleration. The Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics (PAMELA) instrument enables unique observations of SEPs including the composition and angular distribution of the particles about the magnetic field, i.e., pitch angle distribution, over a broad energy range (>80 MeV)-bridging a critical gap between space-based and ground-based measurements. We present high-energy SEP data from PAMELA acquired during the 2012 May 17 SEP event. These data exhibit differential anisotropies and thus transport features over the instrument rigidity range. SEP protons exhibit two distinct pitch angle distributions: a low-energy population that extends to 90 degrees and a population that is beamed at high energies (>1 GeV), consistent with neutron monitor measurements. To explain a low-energy SEP population that exhibits significant scattering or redistribution accompanied by a high-energy population that reaches the Earth relatively unaffected by dispersive transport effects, we postulate that the scattering or redistribution takes place locally. We believe that these are the first comprehensive measurements of the effects of solar energetic particle transport in the Earth's magnetosheath.
Subject headings and genre
- NATURVETENSKAP Fysik Astronomi, astrofysik och kosmologi hsv//swe
- NATURAL SCIENCES Physical Sciences Astronomy, Astrophysics and Cosmology hsv//eng
- Earth
- Sun: coronal mass ejections (CMEs)
- Sun: flares
- Sun: heliosphere
- Sun: particle emission
Added entries (persons, corporate bodies, meetings, titles ...)
- Barbarino, G. C. (author)
- Bazilevskaya, G. A. (author)
- Bellotti, R. (author)
- Boezio, M. (author)
- Bogomolov, E. A. (author)
- Bongi, M. (author)
- Bonvicini, V. (author)
- Bottai, S. (author)
- Bravar, U. (author)
- Bruno, A. (author)
- Cafagna, F. (author)
- Campana, D. (author)
- Carbone, R. (author)
- Carlson, PerKTH,Partikel- och astropartikelfysik(Swepub:kth)u1ua4u32 (author)
- Casolino, M. (author)
- Castellini, G. (author)
- Christian, E. R. (author)
- De Donato, C. (author)
- de Nolfo, G. A. (author)
- De Santis, C. (author)
- De Simone, N. (author)
- Di Felice, V. (author)
- Formato, V. (author)
- Galper, A. M. (author)
- Karelin, A. V. (author)
- Koldashov, S. V. (author)
- Koldobskiy, S. (author)
- Krutkov, S. Y. (author)
- Kvashnin, A. N. (author)
- Lee, M. (author)
- Leonov, A. (author)
- Malakhov, V. (author)
- Marcelli, L. (author)
- Martucci, M. (author)
- Mayorov, A. G. (author)
- Menn, W. (author)
- Merge, M. (author)
- Mikhailov, V. V. (author)
- Mocchiutti, E. (author)
- Monaco, A. (author)
- Mori, N. (author)
- Munini, R. (author)
- Osteria, G. (author)
- Palma, F. (author)
- Panico, B. (author)
- Papini, P. (author)
- Pearce, MarkKTH,Partikel- och astropartikelfysik(Swepub:kth)u17jptna (author)
- Picozza, P. (author)
- Ricci, M. (author)
- Ricciarini, S. B. (author)
- Ryan, J. M. (author)
- Sarkar, R. (author)
- Scotti, V. (author)
- Simon, M. (author)
- Sparvoli, R. (author)
- Spillantini, P. (author)
- Stochaj, S. (author)
- Stozhkov, Y. I. (author)
- Thakur, N. (author)
- Vacchi, A. (author)
- Vannuccini, E. (author)
- Vasilyev, G. I. (author)
- Voronov, S. A. (author)
- Yurkin, Y. T. (author)
- Zampa, G. (author)
- Zampa, N. (author)
- KTHPartikel- och astropartikelfysik (creator_code:org_t)
Related titles
- In:Astrophysical Journal Letters801:12041-82052041-8213
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- Bellotti, R.
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- Bongi, M.
- Bonvicini, V.
- Bottai, S.
- Bravar, U.
- Bruno, A.
- Cafagna, F.
- Campana, D.
- Carbone, R.
- Carlson, Per
- Casolino, M.
- Castellini, G.
- Christian, E. R.
- De Donato, C.
- de Nolfo, G. A.
- De Santis, C.
- De Simone, N.
- Di Felice, V.
- Formato, V.
- Galper, A. M.
- Karelin, A. V.
- Koldashov, S. V.
- Koldobskiy, S.
- Krutkov, S. Y.
- Kvashnin, A. N.
- Lee, M.
- Leonov, A.
- Malakhov, V.
- Marcelli, L.
- Martucci, M.
- Mayorov, A. G.
- Menn, W.
- Merge, M.
- Mikhailov, V. V.
- Mocchiutti, E.
- Monaco, A.
- Mori, N.
- Munini, R.
- Osteria, G.
- Palma, F.
- Panico, B.
- Papini, P.
- Pearce, Mark
- Picozza, P.
- Ricci, M.
- Ricciarini, S. B ...
- Ryan, J. M.
- Sarkar, R.
- Scotti, V.
- Simon, M.
- Sparvoli, R.
- Spillantini, P.
- Stochaj, S.
- Stozhkov, Y. I.
- Thakur, N.
- Vacchi, A.
- Vannuccini, E.
- Vasilyev, G. I.
- Voronov, S. A.
- Yurkin, Y. T.
- Zampa, G.
- Zampa, N.
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