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Akiyama, S.; Alfaro, R.; Alvarez, C.; Angeles Camacho, J. R.; Arteaga-Velázquez, J. C.; Arunbabu, K. P.; Avila Rojas, D.; Solares, H. A. Ayala; Belmont-Moreno, E.; Caballero-Mora, K. S.; Capistrán, T.; Carramiñana, A.; Casanova, S.; Colin-Farias, P.; Cotti, U.; Cotzomi, J.; De la Fuente, E.; de León, C.; Hernandez, R. Diaz; Espinoza, C.; Fraija, N.; Galván-Gámez, A.; Garcia, D.; García-González, J. A.; Garfias, F.; González, M. M.; Goodman, J. A.; Harding, J. P.; Hona, B.; Huang, D.; Hueyotl-Zahuantitla, F.; Hüntemeyer, P.; Iriarte, A.; Joshi, V.; Kieda, D.; Kunde, G. J.; Lara, A.; Vargas, H. León; Luis-Raya, G.; Malone, K.; Martínez-Castro, J.; Matthews, J. A.; Miranda-Romagnoli, P.; Moreno, E.; Nayerhoda, A.; Nellen, L.; Newbold, M.; Niembro, T.; Nieves-Chinchilla, T.; Noriega-Papaqui, R.; Pérez-Pérez, E. G.; Preisser, L.; Rho, C. D.; Ryan, J.; Salazar, H.; Salesa Greus, F.; Sandoval, A.; Springer, R. W.; Torres, I.; Ureña-Mena, F.; Villaseñor, L.; Zepeda, A.
The Astrophysical journal, 12/2020, Letnik: 905, Številka: 1Journal Article
We report the ground-level detection of a Galactic cosmic-ray (GCR) flux enhancement lasting ∼17 hr and associated with the passage of a magnetic flux rope (MFR) over the Earth. The MFR was associated with a slow coronal mass ejection (CME) caused by the eruption of a filament on 2016 October 9. Due to the quiet conditions during the eruption and the lack of interactions during the interplanetary CME transport to the Earth, the associated MFR preserved its configuration and reached the Earth with a strong magnetic field, low density, and a very low turbulence level compared to local background, thus generating the ideal conditions to redirect and guide GCRs (in the ∼8-60 GV rigidity range) along the magnetic field of the MFR. An important negative BZ component inside the MFR caused large disturbances in the geomagnetic field and a relatively strong geomagnetic storm. However, these disturbances are not the main factors behind the GCR enhancement. Instead, we found that the major factor was the alignment between the MFR axis and the asymptotic direction of the observer.
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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