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Title: Relativistic electron response to the combined magnetospheric impact of a coronal mass ejection overlapping with a high-speed stream: Van Allen Probes observations

During early November 2013, the magnetosphere experienced concurrent driving by a coronal mass ejection (CME) during an ongoing high-speed stream (HSS) event. The relativistic electron response to these two kinds of drivers, i.e., HSS and CME, is typically different, with the former often leading to a slower buildup of electrons at larger radial distances, while the latter energizing electrons rapidly with flux enhancements occurring closer to the Earth. In this paper, we present a detailed analysis of the relativistic electron response including radial profiles of phase space density as observed by both Magnetic Electron and Ion Sensor (MagEIS) and Relativistic Electron Proton Telescope instruments on the Van Allen Probes mission. Data from the MagEIS instrument establish the behavior of lower energy (<1 MeV) electrons which span both intermediary and seed populations during electron energization. Measurements characterizing the plasma waves and magnetospheric electric and magnetic fields during this period are obtained by the Electric and Magnetic Field Instrument Suite and Integrated Science instrument on board Van Allen Probes, Search Coil Magnetometer and Flux Gate Magnetometer instruments on board Time History of Events and Macroscale Interactions during Substorms, and the low-altitude Polar-orbiting Operational Environmental Satellites. These observations suggest that during this timemore » period, both radial transport and local in situ processes are involved in the energization of electrons. Finally, the energization attributable to radial diffusion is most clearly evident for the lower energy (<1 MeV) electrons, while the effects of in situ energization by interaction of chorus waves are prominent in the higher-energy electrons.« less
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [1] ;  [6] ;  [7] ; ORCiD logo [2] ;  [2] ;  [2] ;  [1] ;  [5] ; ORCiD logo [3] ;  [8] ;  [9]
  1. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  2. Univ. of Colorado, Boulder, CO (United States). Lab. for Atmospheric and Space Physics
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Univ. of California, Los Angeles, CA (United States). Dept. of Atmospheric and Oceanic Sciences
  5. Aerospace Corporation, Los Angeles, CA (United States)
  6. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Univ. of Maryland, College Park, MD (United States). Dept. of Astronomy. Center for Research and Exploration in Space Science & Technology (CRESST)
  7. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); The Catholic Univ. of America, Washington, DC (United States). Physics Dept.
  8. Univ. of New Hampshire, Durham, NH (United States). Inst. for Study of Earth, Oceans, and Space
  9. Univ. of Iowa, Iowa City, IA (United States). Dept. of Physics and Astronomy
Publication Date:
Report Number(s):
LA-UR-15-28237
Journal ID: ISSN 2169-9380
Grant/Contract Number:
AC52-06NA25396; NAS5-01072; 967399; 1001057397:01; 13-041; NNX11AD75G; NNX11AR64G; NNX13AI61G; NNX15AF61G; AGS 1405054
Type:
Accepted Manuscript
Journal Name:
Journal of Geophysical Research. Space Physics
Additional Journal Information:
Journal Volume: 120; Journal Issue: 9; Journal ID: ISSN 2169-9380
Publisher:
American Geophysical Union
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Univ. of California, Los Angeles, CA (United States); Univ. of Colorado, Boulder, CO (United States); Aerospace Corporation, Los Angeles, CA (United States)
Sponsoring Org:
USDOE; National Aeronautic and Space Administration (NASA); National Science Foundation (NSF)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; relativistic electrons; IP shock; CME; HSS
OSTI Identifier:
1467364

Kanekal, S. G., Baker, D. N., Henderson, M. G., Li, W., Fennell, J. F., Zheng, Y., Richardson, I. G., Jones, A., Ali, A. F., Elkington, S. R., Jaynes, A., Li, X., Blake, J. B., Reeves, G. D., Spence, H. E., and Kletzing, C. A.. Relativistic electron response to the combined magnetospheric impact of a coronal mass ejection overlapping with a high-speed stream: Van Allen Probes observations. United States: N. p., Web. doi:10.1002/2015JA021395.
Kanekal, S. G., Baker, D. N., Henderson, M. G., Li, W., Fennell, J. F., Zheng, Y., Richardson, I. G., Jones, A., Ali, A. F., Elkington, S. R., Jaynes, A., Li, X., Blake, J. B., Reeves, G. D., Spence, H. E., & Kletzing, C. A.. Relativistic electron response to the combined magnetospheric impact of a coronal mass ejection overlapping with a high-speed stream: Van Allen Probes observations. United States. doi:10.1002/2015JA021395.
Kanekal, S. G., Baker, D. N., Henderson, M. G., Li, W., Fennell, J. F., Zheng, Y., Richardson, I. G., Jones, A., Ali, A. F., Elkington, S. R., Jaynes, A., Li, X., Blake, J. B., Reeves, G. D., Spence, H. E., and Kletzing, C. A.. 2015. "Relativistic electron response to the combined magnetospheric impact of a coronal mass ejection overlapping with a high-speed stream: Van Allen Probes observations". United States. doi:10.1002/2015JA021395. https://www.osti.gov/servlets/purl/1467364.
@article{osti_1467364,
title = {Relativistic electron response to the combined magnetospheric impact of a coronal mass ejection overlapping with a high-speed stream: Van Allen Probes observations},
author = {Kanekal, S. G. and Baker, D. N. and Henderson, M. G. and Li, W. and Fennell, J. F. and Zheng, Y. and Richardson, I. G. and Jones, A. and Ali, A. F. and Elkington, S. R. and Jaynes, A. and Li, X. and Blake, J. B. and Reeves, G. D. and Spence, H. E. and Kletzing, C. A.},
abstractNote = {During early November 2013, the magnetosphere experienced concurrent driving by a coronal mass ejection (CME) during an ongoing high-speed stream (HSS) event. The relativistic electron response to these two kinds of drivers, i.e., HSS and CME, is typically different, with the former often leading to a slower buildup of electrons at larger radial distances, while the latter energizing electrons rapidly with flux enhancements occurring closer to the Earth. In this paper, we present a detailed analysis of the relativistic electron response including radial profiles of phase space density as observed by both Magnetic Electron and Ion Sensor (MagEIS) and Relativistic Electron Proton Telescope instruments on the Van Allen Probes mission. Data from the MagEIS instrument establish the behavior of lower energy (<1 MeV) electrons which span both intermediary and seed populations during electron energization. Measurements characterizing the plasma waves and magnetospheric electric and magnetic fields during this period are obtained by the Electric and Magnetic Field Instrument Suite and Integrated Science instrument on board Van Allen Probes, Search Coil Magnetometer and Flux Gate Magnetometer instruments on board Time History of Events and Macroscale Interactions during Substorms, and the low-altitude Polar-orbiting Operational Environmental Satellites. These observations suggest that during this time period, both radial transport and local in situ processes are involved in the energization of electrons. Finally, the energization attributable to radial diffusion is most clearly evident for the lower energy (<1 MeV) electrons, while the effects of in situ energization by interaction of chorus waves are prominent in the higher-energy electrons.},
doi = {10.1002/2015JA021395},
journal = {Journal of Geophysical Research. Space Physics},
number = 9,
volume = 120,
place = {United States},
year = {2015},
month = {9}
}