Relativistic electron microbursts and variations in trapped MeV electron fluxes during the 8-9 October 2012 storm: SAMPEX and Van Allen Probes observations
Abstract
It has been suggested that whistler mode chorus is responsible for both acceleration of MeV electrons and relativistic electron microbursts through resonant wave-particle interactions. Relativistic electron microbursts have been considered as an important loss mechanism of radiation belt electrons. Here in this paper we report on the observations of relativistic electron microbursts and flux variations of trapped MeV electrons during the 8–9 October 2012 storm, using the SAMPEX and Van Allen Probes satellites. Observations by the satellites show that relativistic electron microbursts correlate well with the rapid enhancement of trapped MeV electron fluxes by chorus wave-particle interactions, indicating that acceleration by chorus is much more efficient than losses by microbursts during the storm. It is also revealed that the strong chorus wave activity without relativistic electron microbursts does not lead to significant flux variations of relativistic electrons. Thus, effective acceleration of relativistic electrons is caused by chorus that can cause relativistic electron microbursts.
- Authors:
-
[3];
- Nagoya Univ. (Japan). Inst. for Space-Earth Environmental Research
- Aerospace Corporation, El Segundo, CA (United States). Space Sciences Dept.
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Univ. of Iowa, Iowa City, IA (United States). Dept. of Physics and Astronomy
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- Japan Society for the Promotion of Science (JSPS); International Space Science Institute (ISSI); National Aeronautics and Space Administration (NASA)
- OSTI Identifier:
- 1402605
- Report Number(s):
- LA-UR-16-20487
Journal ID: ISSN 0094-8276; TRN: US1702877
- Grant/Contract Number:
- AC52-06NA25396; G2602; 25302006; 14J09407; 15H05747; 15H05815
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Geophysical Research Letters
- Additional Journal Information:
- Journal Volume: 43; Journal Issue: 7; Journal ID: ISSN 0094-8276
- Publisher:
- American Geophysical Union
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Heliospheric and Magnetospheric Physics; relativistic electron microbursts; whistler mode chorus; relativistic electrons; radiation belts; SAMPEX; Van Allen Probes
Citation Formats
Kurita, Satoshi, Miyoshi, Yoshizumi, Blake, J. Bernard, Reeves, Geoffery D., and Kletzing, Craig A. Relativistic electron microbursts and variations in trapped MeV electron fluxes during the 8-9 October 2012 storm: SAMPEX and Van Allen Probes observations. United States: N. p., 2016.
Web. doi:10.1002/2016GL068260.
Kurita, Satoshi, Miyoshi, Yoshizumi, Blake, J. Bernard, Reeves, Geoffery D., & Kletzing, Craig A. Relativistic electron microbursts and variations in trapped MeV electron fluxes during the 8-9 October 2012 storm: SAMPEX and Van Allen Probes observations. United States. https://doi.org/10.1002/2016GL068260
Kurita, Satoshi, Miyoshi, Yoshizumi, Blake, J. Bernard, Reeves, Geoffery D., and Kletzing, Craig A. Sun .
"Relativistic electron microbursts and variations in trapped MeV electron fluxes during the 8-9 October 2012 storm: SAMPEX and Van Allen Probes observations". United States. https://doi.org/10.1002/2016GL068260. https://www.osti.gov/servlets/purl/1402605.
@article{osti_1402605,
title = {Relativistic electron microbursts and variations in trapped MeV electron fluxes during the 8-9 October 2012 storm: SAMPEX and Van Allen Probes observations},
author = {Kurita, Satoshi and Miyoshi, Yoshizumi and Blake, J. Bernard and Reeves, Geoffery D. and Kletzing, Craig A.},
abstractNote = {It has been suggested that whistler mode chorus is responsible for both acceleration of MeV electrons and relativistic electron microbursts through resonant wave-particle interactions. Relativistic electron microbursts have been considered as an important loss mechanism of radiation belt electrons. Here in this paper we report on the observations of relativistic electron microbursts and flux variations of trapped MeV electrons during the 8–9 October 2012 storm, using the SAMPEX and Van Allen Probes satellites. Observations by the satellites show that relativistic electron microbursts correlate well with the rapid enhancement of trapped MeV electron fluxes by chorus wave-particle interactions, indicating that acceleration by chorus is much more efficient than losses by microbursts during the storm. It is also revealed that the strong chorus wave activity without relativistic electron microbursts does not lead to significant flux variations of relativistic electrons. Thus, effective acceleration of relativistic electrons is caused by chorus that can cause relativistic electron microbursts.},
doi = {10.1002/2016GL068260},
journal = {Geophysical Research Letters},
number = 7,
volume = 43,
place = {United States},
year = {Sun Mar 06 00:00:00 EST 2016},
month = {Sun Mar 06 00:00:00 EST 2016}
}
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Works referencing / citing this record:
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