Interplanetary Magnetic Flux Rope Observed at Ground Level by HAWC
Por:
Akiyama, S., Alfaro, R., Alvarez, C., Angeles Camacho, J. R., Arteaga-Velazquez, J. C., Arunbabu, K. P., Avila Rojas, D., Solares, H. A. Ayala, Belmont-Moreno, E., Caballero-Mora, K. S., Capistran, T., Carraminana, A., Casanova, S., Colin-Farias, P., Cotti, U., Cotzomi, J., De la Fuente, E., de Leon, C., Hernandez, R. Diaz, Espinoza, C., Fraija, N., Galvan-Gamez, A., Garcia, D., Garcia-Gonzalez, J. A., Garfias, F., Gonzalez, M. M., Goodman, J. A., Harding, J. P., Hona, B., Huang, D., Hueyotl-Zahuantitla, F., Huntemeyer, P., Iriarte, A., Joshi, V., Kieda, D., Kunde, G. J., Lara, A., Vargas, H. Leon, Luis-Raya, G., Malone, K., Martinez-Castro, J., Matthews, J. A., Miranda-Romagnoli, P., Moreno, E., Nayerhoda, A., Nellen, L., Newbold, M., Niembro, T., Nieves-Chinchilla, T., Noriega-Papaqui, R., Perez-Perez, E. G., Preisser, L., Rho, C. D., Ryan, J., Salazar, H., Salesa Greus, F., Sandoval, A., Springer, R. W., Torres, I., Urena-Mena, F., Villasenor, L., Zepeda, A.
Publicada:
1 dic 2020
Resumen:
We report the ground-level detection of a Galactic cosmic-ray (GCR) flux
enhancement lasting similar to 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 similar to 8-60 GV
rigidity range) along the magnetic field of the MFR. An important
negative B-Z 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.
Filiaciones:
Akiyama, S.:
Catholic Univ Amer, Washington, DC USA
Alfaro, R.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico
Alvarez, C.:
Univ Autonoma Chiapas, Tuxtla Gutierrez, Chiapas, Mexico
Angeles Camacho, J. R.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico
Arteaga-Velazquez, J. C.:
Univ Michoacana, Morelia, Michoacan, Mexico
Arunbabu, K. P.:
Univ Nacl Autonoma Mexico, Inst Geofis, Mexico City, DF, Mexico
Avila Rojas, D.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico
Solares, H. A. Ayala:
Penn State Univ, Dept Phys, 104 Davey Lab, University Pk, PA 16802 USA
Belmont-Moreno, E.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico
Caballero-Mora, K. S.:
Univ Autonoma Chiapas, Tuxtla Gutierrez, Chiapas, Mexico
Capistran, T.:
Inst Nacl Astrofis Opt & Electr, Puebla, Mexico
Carraminana, A.:
Inst Nacl Astrofis Opt & Electr, Puebla, Mexico
Casanova, S.:
Polish Acad Sci, Inst Nucl Phys, IFJ PAN, PL-31342 Krakow, Poland
Colin-Farias, P.:
Univ Nacl Autonoma Mexico, Posgrado Ciencias Tierra, Mexico City, DF, Mexico
Cotti, U.:
Univ Michoacana, Morelia, Michoacan, Mexico
Cotzomi, J.:
Benemerita Univ Autonoma Puebla, Fac Ciencias Fis Matemat, Puebla, Mexico
De la Fuente, E.:
Univ Guadalajara, Ctr Univ Ciencias Exactas & Ingn, Dept Fis, Guadalajara, Jalisco, Mexico
de Leon, C.:
Univ Michoacana, Morelia, Michoacan, Mexico
Hernandez, R. Diaz:
Inst Nacl Astrofis Opt & Electr, Puebla, Mexico
Espinoza, C.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico
Fraija, N.:
Univ Nacl Autonoma Mexico, Inst Astron, Mexico City, DF, Mexico
Galvan-Gamez, A.:
Univ Nacl Autonoma Mexico, Inst Astron, Mexico City, DF, Mexico
Garcia, D.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico
Garcia-Gonzalez, J. A.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico
Garfias, F.:
Univ Nacl Autonoma Mexico, Inst Astron, Mexico City, DF, Mexico
Gonzalez, M. M.:
Univ Nacl Autonoma Mexico, Inst Astron, Mexico City, DF, Mexico
Goodman, J. A.:
Univ Maryland, Dept Phys, College Pk, MD 20742 USA
Harding, J. P.:
Los Alamos Natl Lab, Phys Div, Los Alamos, NM USA
Hona, B.:
Michigan Technol Univ, Dept Phys, Houghton, MI 49931 USA
Huang, D.:
Michigan Technol Univ, Dept Phys, Houghton, MI 49931 USA
Hueyotl-Zahuantitla, F.:
Univ Autonoma Chiapas, Tuxtla Gutierrez, Chiapas, Mexico
Huntemeyer, P.:
Michigan Technol Univ, Dept Phys, Houghton, MI 49931 USA
Iriarte, A.:
Univ Nacl Autonoma Mexico, Inst Astron, Mexico City, DF, Mexico
Joshi, V.:
Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erlangen, Germany
Kieda, D.:
Univ Utah, Dept Phys & Astron, Salt Lake City, UT USA
Kunde, G. J.:
Los Alamos Natl Lab, Phys Div, Los Alamos, NM USA
Lara, A.:
Univ Nacl Autonoma Mexico, Inst Geofis, Mexico City, DF, Mexico
Vargas, H. Leon:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico
Luis-Raya, G.:
Univ Politecn Pachuca, Pachuca, Hidalgo, Mexico
Malone, K.:
Los Alamos Natl Lab, Phys Div, Los Alamos, NM USA
Martinez-Castro, J.:
Inst Politecn Nacl, Ctr Invest Computac, Mexico City, DF, Mexico
Miranda-Romagnoli, P.:
Univ Autonoma Estado Hidalgo, Pachuca, Hidalgo, Mexico
Moreno, E.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico
Benemerita Univ Autonoma Puebla, Fac Ciencias Fis Matemat, Puebla, Mexico
Nayerhoda, A.:
Polish Acad Sci, Inst Nucl Phys, IFJ PAN, PL-31342 Krakow, Poland
Nellen, L.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico
Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City, DF, Mexico
Newbold, M.:
Univ Utah, Dept Phys & Astron, Salt Lake City, UT USA
Niembro, T.:
Smithsonian Astrophys Observ, Cambridge, MA USA
Nieves-Chinchilla, T.:
NASA GSFC, Heliosphys Sci Div, Washington, DC USA
Noriega-Papaqui, R.:
Univ Autonoma Estado Hidalgo, Pachuca, Hidalgo, Mexico
Perez-Perez, E. G.:
Univ Politecn Pachuca, Pachuca, Hidalgo, Mexico
Preisser, L.:
Univ Nacl Autonoma Mexico, Inst Geofis, Mexico City, DF, Mexico
Rho, C. D.:
Univ Seoul, Seoul, South Korea
Ryan, J.:
Univ New Hampshire, Durham, NH 03824 USA
Salazar, H.:
Benemerita Univ Autonoma Puebla, Fac Ciencias Fis Matemat, Puebla, Mexico
Salesa Greus, F.:
Polish Acad Sci, Inst Nucl Phys, IFJ PAN, PL-31342 Krakow, Poland
Sandoval, A.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico
Springer, R. W.:
Univ Utah, Dept Phys & Astron, Salt Lake City, UT USA
Villasenor, L.:
Benemerita Univ Autonoma Puebla, Fac Ciencias Fis Matemat, Puebla, Mexico
Zepeda, A.:
Inst Politecn Nacl, Ctr Invest & Estudios Avanzados, Dept Fis, Mexico City, DF, Mexico
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