Van Allen Probes observations of prompt MeV radiation belt electron acceleration in nonlinear interactions with VLF chorus
Prompt recovery of MeV (millions of electron Volts) electron populations in the poststorm core of the outer terrestrial radiation belt involves local acceleration of a seed population of energetic electrons in interactions with VLF chorus waves. Electron interactions during the generation of VLF ris...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
American Geophysical Union (AGU)
2017
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| Online Access: | http://hdl.handle.net/1721.1/110600 |
| _version_ | 1811070567735885824 |
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| author | Omura, Y. Baker, D. N. Kletzing, C. A. Claudepierre, S. G. Foster, John C Erickson, Philip J |
| author2 | Haystack Observatory |
| author_facet | Haystack Observatory Omura, Y. Baker, D. N. Kletzing, C. A. Claudepierre, S. G. Foster, John C Erickson, Philip J |
| author_sort | Omura, Y. |
| collection | MIT |
| description | Prompt recovery of MeV (millions of electron Volts) electron populations in the poststorm core of the outer terrestrial radiation belt involves local acceleration of a seed population of energetic electrons in interactions with VLF chorus waves. Electron interactions during the generation of VLF rising tones are strongly nonlinear, such that a fraction of the relativistic electrons at resonant energies are trapped by waves, leading to significant nonadiabatic energy exchange. Through detailed examination of VLF chorus and electron fluxes observed by Van Allen Probes, we investigate the efficiency of nonlinear processes for acceleration of electrons to MeV energies. We find through subpacket analysis of chorus waveforms that electrons with initial energy of hundreds of keV to 3 MeV can be accelerated by 50 keV–200 keV in resonant interactions with a single VLF rising tone on a time scale of 10–100 ms. |
| first_indexed | 2024-09-23T08:38:06Z |
| format | Article |
| id | mit-1721.1/110600 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:38:06Z |
| publishDate | 2017 |
| publisher | American Geophysical Union (AGU) |
| record_format | dspace |
| spelling | mit-1721.1/1106002022-09-23T13:28:30Z Van Allen Probes observations of prompt MeV radiation belt electron acceleration in nonlinear interactions with VLF chorus Omura, Y. Baker, D. N. Kletzing, C. A. Claudepierre, S. G. Foster, John C Erickson, Philip J Haystack Observatory Foster, John C. Foster, John C Erickson, Philip J Prompt recovery of MeV (millions of electron Volts) electron populations in the poststorm core of the outer terrestrial radiation belt involves local acceleration of a seed population of energetic electrons in interactions with VLF chorus waves. Electron interactions during the generation of VLF rising tones are strongly nonlinear, such that a fraction of the relativistic electrons at resonant energies are trapped by waves, leading to significant nonadiabatic energy exchange. Through detailed examination of VLF chorus and electron fluxes observed by Van Allen Probes, we investigate the efficiency of nonlinear processes for acceleration of electrons to MeV energies. We find through subpacket analysis of chorus waveforms that electrons with initial energy of hundreds of keV to 3 MeV can be accelerated by 50 keV–200 keV in resonant interactions with a single VLF rising tone on a time scale of 10–100 ms. University of Minnesota. Van Allen Probes sub-award MEXT/JSPS KAKENHI (Grant Numbers JP26287120) MEXT/JSPS KAKENHI (Grant Numbers JP15H05815) National Science Foundation (U.S.) (Prime contract NAS5-01072 for JHU/APL contract 967399) 2017-07-10T18:13:20Z 2017-07-10T18:13:20Z 2017-01 Article http://purl.org/eprint/type/JournalArticle 21699380 http://hdl.handle.net/1721.1/110600 Foster, J. C., P. J. Erickson, Y. Omura, D. N. Baker, C. A. Kletzing, and S. G. Claudepierre. “Van Allen Probes Observations of Prompt MeV Radiation Belt Electron Acceleration in Nonlinear Interactions with VLF Chorus.” Journal of Geophysical Research: Space Physics 122, no. 1 (January 2017): 324–339. en_US http://dx.doi.org/10.1002/2016JA023429 Journal of Geophysical Research: Space Physics Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Geophysical Union (AGU) Foster |
| spellingShingle | Omura, Y. Baker, D. N. Kletzing, C. A. Claudepierre, S. G. Foster, John C Erickson, Philip J Van Allen Probes observations of prompt MeV radiation belt electron acceleration in nonlinear interactions with VLF chorus |
| title | Van Allen Probes observations of prompt MeV radiation belt electron acceleration in nonlinear interactions with VLF chorus |
| title_full | Van Allen Probes observations of prompt MeV radiation belt electron acceleration in nonlinear interactions with VLF chorus |
| title_fullStr | Van Allen Probes observations of prompt MeV radiation belt electron acceleration in nonlinear interactions with VLF chorus |
| title_full_unstemmed | Van Allen Probes observations of prompt MeV radiation belt electron acceleration in nonlinear interactions with VLF chorus |
| title_short | Van Allen Probes observations of prompt MeV radiation belt electron acceleration in nonlinear interactions with VLF chorus |
| title_sort | van allen probes observations of prompt mev radiation belt electron acceleration in nonlinear interactions with vlf chorus |
| url | http://hdl.handle.net/1721.1/110600 |
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