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Observations of large‐amplitude, narrowband whistlers at stream interaction regions
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| Zeitschriftentitel: | Journal of Geophysical Research: Space Physics |
|---|---|
| Personen und Körperschaften: | , , , , , , , |
| In: | Journal of Geophysical Research: Space Physics, 115, 2010, A8 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Geophysical Union (AGU)
|
| Schlagwörter: |
| author_facet |
Breneman, A. Cattell, C. Schreiner, S. Kersten, K. Wilson, L. B. Kellogg, P. Goetz, K. Jian, L. K. Breneman, A. Cattell, C. Schreiner, S. Kersten, K. Wilson, L. B. Kellogg, P. Goetz, K. Jian, L. K. |
|---|---|
| author |
Breneman, A. Cattell, C. Schreiner, S. Kersten, K. Wilson, L. B. Kellogg, P. Goetz, K. Jian, L. K. |
| spellingShingle |
Breneman, A. Cattell, C. Schreiner, S. Kersten, K. Wilson, L. B. Kellogg, P. Goetz, K. Jian, L. K. Journal of Geophysical Research: Space Physics Observations of large‐amplitude, narrowband whistlers at stream interaction regions Paleontology Space and Planetary Science Earth and Planetary Sciences (miscellaneous) Atmospheric Science Earth-Surface Processes Geochemistry and Petrology Soil Science Water Science and Technology Ecology Aquatic Science Forestry Oceanography Geophysics |
| author_sort |
breneman, a. |
| spelling |
Breneman, A. Cattell, C. Schreiner, S. Kersten, K. Wilson, L. B. Kellogg, P. Goetz, K. Jian, L. K. 0148-0227 American Geophysical Union (AGU) Paleontology Space and Planetary Science Earth and Planetary Sciences (miscellaneous) Atmospheric Science Earth-Surface Processes Geochemistry and Petrology Soil Science Water Science and Technology Ecology Aquatic Science Forestry Oceanography Geophysics http://dx.doi.org/10.1029/2009ja014920 <jats:p>We present the first solar wind observations of large‐amplitude, narrowband waveforms in the frequency range 10–100 Hz, consistent with the whistler mode. These whistlers are only observable in high time resolution electric field waveform data provided by the Time Domain Sampler (TDS) instrument on STEREO. Amplitudes range from a few to >40 mV/m peak‐to‐peak, one to three orders of magnitude larger than any previous observations of whistler mode waves in the solar wind. The whistlers are obliquely propagating with a large electrostatic component and are right‐hand elliptically polarized in the spacecraft frame. The whistlers occur in groups that are strongly correlated with stream interaction regions (SIRs). The groups persist from a few seconds to minutes and are observed at 88% of SIRs and 17% of shocks from available data. A more detailed look shows that the whistler groups are observed near sudden disturbances of the solar wind magnetic field and plasma. We suggest that, owing to the oblique and narrowband nature of these waves, an electron or ion beam instability may be responsible for their creation. Test particle simulations show that the waves can interact strongly with halo (>60 eV) electrons. Test electrons were scattered by tens of degrees and energized/deenergized by up to 50% in a few tens of milliseconds. Thus these whistlers may play an important role in the dynamics of solar wind electrons within SIRs and near some shocks.</jats:p> Observations of large‐amplitude, narrowband whistlers at stream interaction regions Journal of Geophysical Research: Space Physics |
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10.1029/2009ja014920 |
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Geographie Chemie und Pharmazie Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft Biologie Allgemeine Naturwissenschaft Physik Technik Geologie und Paläontologie |
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Observations of large‐amplitude, narrowband whistlers at stream interaction regions |
| title_unstemmed |
Observations of large‐amplitude, narrowband whistlers at stream interaction regions |
| title_full |
Observations of large‐amplitude, narrowband whistlers at stream interaction regions |
| title_fullStr |
Observations of large‐amplitude, narrowband whistlers at stream interaction regions |
| title_full_unstemmed |
Observations of large‐amplitude, narrowband whistlers at stream interaction regions |
| title_short |
Observations of large‐amplitude, narrowband whistlers at stream interaction regions |
| title_sort |
observations of large‐amplitude, narrowband whistlers at stream interaction regions |
| topic |
Paleontology Space and Planetary Science Earth and Planetary Sciences (miscellaneous) Atmospheric Science Earth-Surface Processes Geochemistry and Petrology Soil Science Water Science and Technology Ecology Aquatic Science Forestry Oceanography Geophysics |
| url |
http://dx.doi.org/10.1029/2009ja014920 |
| publishDate |
2010 |
| physical |
|
| description |
<jats:p>We present the first solar wind observations of large‐amplitude, narrowband waveforms in the frequency range 10–100 Hz, consistent with the whistler mode. These whistlers are only observable in high time resolution electric field waveform data provided by the Time Domain Sampler (TDS) instrument on STEREO. Amplitudes range from a few to >40 mV/m peak‐to‐peak, one to three orders of magnitude larger than any previous observations of whistler mode waves in the solar wind. The whistlers are obliquely propagating with a large electrostatic component and are right‐hand elliptically polarized in the spacecraft frame. The whistlers occur in groups that are strongly correlated with stream interaction regions (SIRs). The groups persist from a few seconds to minutes and are observed at 88% of SIRs and 17% of shocks from available data. A more detailed look shows that the whistler groups are observed near sudden disturbances of the solar wind magnetic field and plasma. We suggest that, owing to the oblique and narrowband nature of these waves, an electron or ion beam instability may be responsible for their creation. Test particle simulations show that the waves can interact strongly with halo (>60 eV) electrons. Test electrons were scattered by tens of degrees and energized/deenergized by up to 50% in a few tens of milliseconds. Thus these whistlers may play an important role in the dynamics of solar wind electrons within SIRs and near some shocks.</jats:p> |
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| author | Breneman, A., Cattell, C., Schreiner, S., Kersten, K., Wilson, L. B., Kellogg, P., Goetz, K., Jian, L. K. |
| author_facet | Breneman, A., Cattell, C., Schreiner, S., Kersten, K., Wilson, L. B., Kellogg, P., Goetz, K., Jian, L. K., Breneman, A., Cattell, C., Schreiner, S., Kersten, K., Wilson, L. B., Kellogg, P., Goetz, K., Jian, L. K. |
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| description | <jats:p>We present the first solar wind observations of large‐amplitude, narrowband waveforms in the frequency range 10–100 Hz, consistent with the whistler mode. These whistlers are only observable in high time resolution electric field waveform data provided by the Time Domain Sampler (TDS) instrument on STEREO. Amplitudes range from a few to >40 mV/m peak‐to‐peak, one to three orders of magnitude larger than any previous observations of whistler mode waves in the solar wind. The whistlers are obliquely propagating with a large electrostatic component and are right‐hand elliptically polarized in the spacecraft frame. The whistlers occur in groups that are strongly correlated with stream interaction regions (SIRs). The groups persist from a few seconds to minutes and are observed at 88% of SIRs and 17% of shocks from available data. A more detailed look shows that the whistler groups are observed near sudden disturbances of the solar wind magnetic field and plasma. We suggest that, owing to the oblique and narrowband nature of these waves, an electron or ion beam instability may be responsible for their creation. Test particle simulations show that the waves can interact strongly with halo (>60 eV) electrons. Test electrons were scattered by tens of degrees and energized/deenergized by up to 50% in a few tens of milliseconds. Thus these whistlers may play an important role in the dynamics of solar wind electrons within SIRs and near some shocks.</jats:p> |
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| imprint_str_mv | American Geophysical Union (AGU), 2010 |
| institution | DE-Brt1, DE-Zwi2, DE-D161, DE-Gla1, DE-Zi4, DE-15, DE-Rs1, DE-Pl11, DE-105, DE-14, DE-Ch1, DE-L229, DE-D275, DE-Bn3 |
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| language | English |
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| physical | |
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| spelling | Breneman, A. Cattell, C. Schreiner, S. Kersten, K. Wilson, L. B. Kellogg, P. Goetz, K. Jian, L. K. 0148-0227 American Geophysical Union (AGU) Paleontology Space and Planetary Science Earth and Planetary Sciences (miscellaneous) Atmospheric Science Earth-Surface Processes Geochemistry and Petrology Soil Science Water Science and Technology Ecology Aquatic Science Forestry Oceanography Geophysics http://dx.doi.org/10.1029/2009ja014920 <jats:p>We present the first solar wind observations of large‐amplitude, narrowband waveforms in the frequency range 10–100 Hz, consistent with the whistler mode. These whistlers are only observable in high time resolution electric field waveform data provided by the Time Domain Sampler (TDS) instrument on STEREO. Amplitudes range from a few to >40 mV/m peak‐to‐peak, one to three orders of magnitude larger than any previous observations of whistler mode waves in the solar wind. The whistlers are obliquely propagating with a large electrostatic component and are right‐hand elliptically polarized in the spacecraft frame. The whistlers occur in groups that are strongly correlated with stream interaction regions (SIRs). The groups persist from a few seconds to minutes and are observed at 88% of SIRs and 17% of shocks from available data. A more detailed look shows that the whistler groups are observed near sudden disturbances of the solar wind magnetic field and plasma. We suggest that, owing to the oblique and narrowband nature of these waves, an electron or ion beam instability may be responsible for their creation. Test particle simulations show that the waves can interact strongly with halo (>60 eV) electrons. Test electrons were scattered by tens of degrees and energized/deenergized by up to 50% in a few tens of milliseconds. Thus these whistlers may play an important role in the dynamics of solar wind electrons within SIRs and near some shocks.</jats:p> Observations of large‐amplitude, narrowband whistlers at stream interaction regions Journal of Geophysical Research: Space Physics |
| spellingShingle | Breneman, A., Cattell, C., Schreiner, S., Kersten, K., Wilson, L. B., Kellogg, P., Goetz, K., Jian, L. K., Journal of Geophysical Research: Space Physics, Observations of large‐amplitude, narrowband whistlers at stream interaction regions, Paleontology, Space and Planetary Science, Earth and Planetary Sciences (miscellaneous), Atmospheric Science, Earth-Surface Processes, Geochemistry and Petrology, Soil Science, Water Science and Technology, Ecology, Aquatic Science, Forestry, Oceanography, Geophysics |
| title | Observations of large‐amplitude, narrowband whistlers at stream interaction regions |
| title_full | Observations of large‐amplitude, narrowband whistlers at stream interaction regions |
| title_fullStr | Observations of large‐amplitude, narrowband whistlers at stream interaction regions |
| title_full_unstemmed | Observations of large‐amplitude, narrowband whistlers at stream interaction regions |
| title_short | Observations of large‐amplitude, narrowband whistlers at stream interaction regions |
| title_sort | observations of large‐amplitude, narrowband whistlers at stream interaction regions |
| title_unstemmed | Observations of large‐amplitude, narrowband whistlers at stream interaction regions |
| topic | Paleontology, Space and Planetary Science, Earth and Planetary Sciences (miscellaneous), Atmospheric Science, Earth-Surface Processes, Geochemistry and Petrology, Soil Science, Water Science and Technology, Ecology, Aquatic Science, Forestry, Oceanography, Geophysics |
| url | http://dx.doi.org/10.1029/2009ja014920 |