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PAMELA's measurements of geomagnetic cutoff variations during the 14 December 2006 storm
- Source :
- Space weather (Online) 14 (2016): 210–220. doi:10.1002/2016SW001364, info:cnr-pdr/source/autori:Adriani, O.; Barbarino, G. C.; Bazilevskaya, G. A.; Bellotti, R.; Boezio, M.; Bogomolov, E. A.; Bongi, M.; Bonvicini, V.; Bottai, S.; Bruno, A.; Cafagna, F.; Campana, D.; Carlson, P.; Casolino, M.; Castellini, G.; De Donato, C.; de Nolfo, G. A.; De Santis, C.; De Simone, N.; Di Felice, V.; Galper, A. M.; Karelin, A. V.; Koldashov, S. V.; Koldobskiy, S.; Krutkov, S. Y.; Kvashnin, A. N.; 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, M.; Picozza, P.; Ricci, M.; Ricciarini, S. B.; Sarkar, R.; Scotti, V.; Simon, M.; Sparvoli, R.; Spillantini, P.; Stozhkov, Y. I.; Vacchi, A.; Vannuccini, E.; Vasilyev, G. I.; Voronov, S. A.; Yurkin, Y. T.; Zampa, G.; Zampa, N./titolo:PAMELA's measurements of geomagnetic cutoff variations during the 14 December 2006 storm/doi:10.1002%2F2016SW001364/rivista:Space weather (Online)/anno:2016/pagina_da:210/pagina_a:220/intervallo_pagine:210–220/volume:14
- Publication Year :
- 2016
-
Abstract
- Data from the Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics (PAMELA) satellite experiment were used to measure the geomagnetic cutoff for high-energy (>80 MeV) protons during the 14 December 2006 geomagnetic storm. The variations of the cutoff latitude as a function of rigidity were studied on relatively short timescales, corresponding to spacecraft orbital periods (94 min). Estimated cutoff values were compared with those obtained by means of a trajectory tracing approach based on a dynamical empirical modeling of the Earth's magnetosphere. We found significant variations in the cutoff latitude, with a maximum suppression of about 7 deg at lowest rigidities during the main phase of the storm. The observed reduction in the geomagnetic shielding and its temporal evolution were related to the changes in the magnetospheric configuration, investigating the role of interplanetary magnetic field, solar wind and geomagnetic parameters. PAMELA's results represent the first direct measurement of geomagnetic cutoffs for protons with kinetic energies in the sub-GeV and GeV region.<br />26 pages, 6 figures and 1 table. Accepted for publication in Space Weather
- Subjects :
- Geomagnetic Cutoff
Atmospheric Science
010504 meteorology & atmospheric sciences
Astrophysics::High Energy Astrophysical Phenomena
Magnetosphere
FOS: Physical sciences
Astrophysics
01 natural sciences
Physics::Geophysics
High Energy Physics - Experiment
High Energy Physics - Experiment (hep-ex)
Physics - Space Physics
0103 physical sciences
Interplanetary magnetic field
Solar Energetic Particles
010303 astronomy & astrophysics
0105 earth and related environmental sciences
Physics
Geomagnetic storm
Earth and Planetary Astrophysics (astro-ph.EP)
Ionospheric dynamo region
Geomagnetic secular variation
Solar energetic particles
Settore FIS/04
Geophysics
Magnetic Storms
Space Physics (physics.space-ph)
Solar wind
Earth's magnetic field
Physics::Space Physics
Astrophysics - Earth and Planetary Astrophysics
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Space weather (Online) 14 (2016): 210–220. doi:10.1002/2016SW001364, info:cnr-pdr/source/autori:Adriani, O.; Barbarino, G. C.; Bazilevskaya, G. A.; Bellotti, R.; Boezio, M.; Bogomolov, E. A.; Bongi, M.; Bonvicini, V.; Bottai, S.; Bruno, A.; Cafagna, F.; Campana, D.; Carlson, P.; Casolino, M.; Castellini, G.; De Donato, C.; de Nolfo, G. A.; De Santis, C.; De Simone, N.; Di Felice, V.; Galper, A. M.; Karelin, A. V.; Koldashov, S. V.; Koldobskiy, S.; Krutkov, S. Y.; Kvashnin, A. N.; 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, M.; Picozza, P.; Ricci, M.; Ricciarini, S. B.; Sarkar, R.; Scotti, V.; Simon, M.; Sparvoli, R.; Spillantini, P.; Stozhkov, Y. I.; Vacchi, A.; Vannuccini, E.; Vasilyev, G. I.; Voronov, S. A.; Yurkin, Y. T.; Zampa, G.; Zampa, N./titolo:PAMELA's measurements of geomagnetic cutoff variations during the 14 December 2006 storm/doi:10.1002%2F2016SW001364/rivista:Space weather (Online)/anno:2016/pagina_da:210/pagina_a:220/intervallo_pagine:210–220/volume:14
- Accession number :
- edsair.doi.dedup.....a4ac60e5e2caf41d9be8a49083dce5b1